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import bpftrace-0.16.0-2.el9

This commit is contained in:
CentOS Sources 2023-05-09 05:21:49 +00:00 committed by Stepan Oksanichenko
parent dabd328a75
commit d149053495
15 changed files with 667 additions and 1605 deletions
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3
.bpftrace.metadata
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@ -1 +1,2 @@
ddc4abda22761b58fc7fc49623e60ca7e3ae26ff SOURCES/bpftrace-0.13.1.tar.gz
90dc7733b42f9eca714d2d87a4577c9b0a232293 SOURCES/bpftrace-0.16.0.tar.gz
974ee680e1eb103c415832d69742e194b661da5c SOURCES/cereal-1.3.2.tar.gz

3
.gitignore vendored
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@ -1 +1,2 @@
SOURCES/bpftrace-0.13.1.tar.gz
SOURCES/bpftrace-0.16.0.tar.gz
SOURCES/cereal-1.3.2.tar.gz

834
SOURCES/bpftrace-0.13.1-Fix-LLVM-13-warnings.patch
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@ -1,834 +0,0 @@
From 291cb44a513049e94b8de80f58fa7f08d3491aea Mon Sep 17 00:00:00 2001
From: Viktor Malik <viktor.malik@gmail.com>
Date: Mon, 10 Jan 2022 16:41:05 +0100
Subject: [PATCH 8/8] Fix LLVM 13 warnings
Since LLVM 13, CreateGEP and CreateLoad require explicit types.
---
src/ast/codegen_llvm.cpp | 265 ++++++++++++++++++++++++---------------
src/ast/irbuilderbpf.cpp | 56 +++++----
2 files changed, 200 insertions(+), 121 deletions(-)
diff --git a/src/ast/codegen_llvm.cpp b/src/ast/codegen_llvm.cpp
index d30327a2..0bd23276 100644
--- a/src/ast/codegen_llvm.cpp
+++ b/src/ast/codegen_llvm.cpp
@@ -224,9 +224,10 @@ void CodegenLLVM::visit(Builtin &builtin)
// LLVM optimization is possible to transform `(uint64*)ctx` into
// `(uint8*)ctx`, but sometimes this causes invalid context access.
// Mark every context acess to supporess any LLVM optimization.
- expr_ = b_.CreateLoad(b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(offset)),
- builtin.ident);
+ expr_ = b_.CreateLoad(
+ b_.getInt64Ty(),
+ b_.CreateGEP(b_.getInt64Ty(), ctx, b_.getInt64(offset)),
+ builtin.ident);
// LLVM 7.0 <= does not have CreateLoad(*Ty, *Ptr, isVolatile, Name),
// so call setVolatile() manually
dyn_cast<LoadInst>(expr_)->setVolatile(true);
@@ -249,16 +250,17 @@ void CodegenLLVM::visit(Builtin &builtin)
int arg_num = atoi(builtin.ident.substr(4).c_str());
Value *ctx = b_.CreatePointerCast(ctx_, b_.getInt64Ty()->getPointerTo());
- Value *sp = b_.CreateLoad(b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(sp_offset)),
- "reg_sp");
+ Value *sp = b_.CreateLoad(
+ b_.getInt64Ty(),
+ b_.CreateGEP(b_.getInt64Ty(), ctx, b_.getInt64(sp_offset)),
+ "reg_sp");
dyn_cast<LoadInst>(sp)->setVolatile(true);
AllocaInst *dst = b_.CreateAllocaBPF(builtin.type, builtin.ident);
Value *src = b_.CreateAdd(sp,
b_.getInt64((arg_num + arch::arg_stack_offset()) *
sizeof(uintptr_t)));
b_.CreateProbeRead(ctx_, dst, 8, src, builtin.type.GetAS(), builtin.loc);
- expr_ = b_.CreateLoad(dst);
+ expr_ = b_.CreateLoad(b_.GetType(builtin.type), dst);
b_.CreateLifetimeEnd(dst);
}
else if (builtin.ident == "probe")
@@ -526,8 +528,12 @@ void CodegenLLVM::visit(Call &call)
b_.CREATE_MEMSET(buf, b_.getInt8(0), bpftrace_.strlen_, 1);
auto arg0 = call.vargs->front();
auto scoped_del = accept(call.vargs->front());
- b_.CreateProbeReadStr(
- ctx_, buf, b_.CreateLoad(strlen), expr_, arg0->type.GetAS(), call.loc);
+ b_.CreateProbeReadStr(ctx_,
+ buf,
+ b_.CreateLoad(b_.getInt64Ty(), strlen),
+ expr_,
+ arg0->type.GetAS(),
+ call.loc);
b_.CreateLifetimeEnd(strlen);
expr_ = buf;
@@ -569,12 +575,14 @@ void CodegenLLVM::visit(Call &call)
false);
AllocaInst *buf = b_.CreateAllocaBPF(buf_struct, "buffer");
- Value *buf_len_offset = b_.CreateGEP(buf,
+ Value *buf_len_offset = b_.CreateGEP(buf_struct,
+ buf,
{ b_.getInt32(0), b_.getInt32(0) });
length = b_.CreateIntCast(length, buf_struct->getElementType(0), false);
b_.CreateStore(length, buf_len_offset);
- Value *buf_data_offset = b_.CreateGEP(buf,
+ Value *buf_data_offset = b_.CreateGEP(buf_struct,
+ buf,
{ b_.getInt32(0), b_.getInt32(1) });
b_.CREATE_MEMSET(buf_data_offset,
b_.GetIntSameSize(0, elements.at(0)),
@@ -664,14 +672,14 @@ void CodegenLLVM::visit(Call &call)
b_.SetInsertPoint(notzero);
b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::join)), perfdata);
b_.CreateStore(b_.getInt64(join_id_),
- b_.CreateGEP(perfdata, b_.getInt64(8)));
+ b_.CreateGEP(b_.getInt8Ty(), perfdata, b_.getInt64(8)));
join_id_++;
AllocaInst *arr = b_.CreateAllocaBPF(b_.getInt64Ty(), call.func + "_r0");
b_.CreateProbeRead(ctx_, arr, 8, expr_, addrspace, call.loc);
b_.CreateProbeReadStr(ctx_,
b_.CreateAdd(perfdata, b_.getInt64(8 + 8)),
bpftrace_.join_argsize_,
- b_.CreateLoad(arr),
+ b_.CreateLoad(b_.getInt64Ty(), arr),
addrspace,
call.loc);
@@ -679,14 +687,18 @@ void CodegenLLVM::visit(Call &call)
{
// argi
b_.CreateStore(b_.CreateAdd(expr_, b_.getInt64(8 * i)), first);
- b_.CreateProbeRead(
- ctx_, second, 8, b_.CreateLoad(first), addrspace, call.loc);
+ b_.CreateProbeRead(ctx_,
+ second,
+ 8,
+ b_.CreateLoad(b_.getInt64Ty(), first),
+ addrspace,
+ call.loc);
b_.CreateProbeReadStr(
ctx_,
b_.CreateAdd(perfdata,
b_.getInt64(8 + 8 + i * bpftrace_.join_argsize_)),
bpftrace_.join_argsize_,
- b_.CreateLoad(second),
+ b_.CreateLoad(b_.getInt64Ty(), second),
addrspace,
call.loc);
}
@@ -729,7 +741,9 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(inet_struct, "inet");
- Value *af_offset = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) });
+ Value *af_offset = b_.CreateGEP(inet_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(0) });
Value *af_type;
auto inet = call.vargs->at(0);
@@ -752,7 +766,9 @@ void CodegenLLVM::visit(Call &call)
}
b_.CreateStore(af_type, af_offset);
- Value *inet_offset = b_.CreateGEP(buf, {b_.getInt32(0), b_.getInt32(1)});
+ Value *inet_offset = b_.CreateGEP(inet_struct,
+ buf,
+ { b_.getInt32(0), b_.getInt32(1) });
b_.CREATE_MEMSET(inet_offset, b_.getInt8(0), 16, 1);
auto scoped_del = accept(inet);
@@ -785,9 +801,10 @@ void CodegenLLVM::visit(Call &call)
}
Value *ctx = b_.CreatePointerCast(ctx_, b_.getInt64Ty()->getPointerTo());
- expr_ = b_.CreateLoad(b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(offset)),
- call.func + "_" + reg_name);
+ expr_ = b_.CreateLoad(
+ b_.getInt64Ty(),
+ b_.CreateGEP(b_.getInt64Ty(), ctx, b_.getInt64(offset)),
+ call.func + "_" + reg_name);
dyn_cast<LoadInst>(expr_)->setVolatile(true);
}
else if (call.func == "printf")
@@ -812,8 +829,10 @@ void CodegenLLVM::visit(Call &call)
auto scoped_del = accept(&arg);
// and store it to data area
- Value *offset = b_.CreateGEP(
- data, { b_.getInt64(0), b_.getInt64((i - 1) * ptr_size) });
+ Value *offset = b_.CreateGEP(b_.GetType(data_type),
+ data,
+ { b_.getInt64(0),
+ b_.getInt64((i - 1) * ptr_size) });
b_.CreateStore(expr_, offset);
// keep the expression alive, so it's still there
@@ -901,7 +920,9 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(event_struct,
call.func + "_" + map.ident);
- auto aa_ptr = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) });
+ auto aa_ptr = b_.CreateGEP(event_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(0) });
if (call.func == "clear")
b_.CreateStore(b_.GetIntSameSize(asyncactionint(AsyncAction::clear),
elements.at(0)),
@@ -912,7 +933,9 @@ void CodegenLLVM::visit(Call &call)
aa_ptr);
auto id = bpftrace_.maps[map.ident].value()->id;
- auto *ident_ptr = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) });
+ auto *ident_ptr = b_.CreateGEP(event_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(1) });
b_.CreateStore(b_.GetIntSameSize(id, elements.at(1)), ident_ptr);
b_.CreatePerfEventOutput(ctx_, buf, getStructSize(event_struct));
@@ -928,12 +951,13 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(time_struct, call.func + "_t");
- b_.CreateStore(b_.GetIntSameSize(asyncactionint(AsyncAction::time),
- elements.at(0)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.GetIntSameSize(asyncactionint(AsyncAction::time), elements.at(0)),
+ b_.CreateGEP(time_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
- b_.CreateStore(b_.GetIntSameSize(time_id_, elements.at(1)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ b_.GetIntSameSize(time_id_, elements.at(1)),
+ b_.CreateGEP(time_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
time_id_++;
b_.CreatePerfEventOutput(ctx_, buf, getStructSize(time_struct));
@@ -948,13 +972,15 @@ void CodegenLLVM::visit(Call &call)
true);
AllocaInst *buf = b_.CreateAllocaBPF(strftime_struct, call.func + "_args");
- b_.CreateStore(b_.GetIntSameSize(strftime_id_, elements.at(0)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.GetIntSameSize(strftime_id_, elements.at(0)),
+ b_.CreateGEP(strftime_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
strftime_id_++;
Expression *arg = call.vargs->at(1);
auto scoped_del = accept(arg);
- b_.CreateStore(expr_,
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ expr_,
+ b_.CreateGEP(strftime_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
expr_ = buf;
}
else if (call.func == "kstack" || call.func == "ustack")
@@ -1068,11 +1094,12 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(unwatch_struct, "unwatch");
size_t struct_size = datalayout().getTypeAllocSize(unwatch_struct);
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::watchpoint_detach)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::watchpoint_detach)),
+ b_.CreateGEP(unwatch_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
b_.CreateStore(
b_.CreateIntCast(expr_, b_.getInt64Ty(), false /* unsigned */),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateGEP(unwatch_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
b_.CreatePerfEventOutput(ctx_, buf, struct_size);
b_.CreateLifetimeEnd(buf);
expr_ = nullptr;
@@ -1102,7 +1129,8 @@ void CodegenLLVM::visit(Variable &var)
}
else
{
- expr_ = b_.CreateLoad(variables_[var.ident]);
+ auto *var_alloca = variables_[var.ident];
+ expr_ = b_.CreateLoad(var_alloca->getType()->getElementType(), var_alloca);
}
}
@@ -1379,13 +1407,15 @@ void CodegenLLVM::visit(Unop &unop)
if (unop.is_post_op)
expr_ = oldval;
else
- expr_ = b_.CreateLoad(newval);
+ expr_ = b_.CreateLoad(b_.GetType(map.type), newval);
b_.CreateLifetimeEnd(newval);
}
else if (unop.expr->is_variable)
{
Variable &var = static_cast<Variable&>(*unop.expr);
- Value *oldval = b_.CreateLoad(variables_[var.ident]);
+ Value *oldval = b_.CreateLoad(
+ variables_[var.ident]->getType()->getElementType(),
+ variables_[var.ident]);
Value *newval;
if (is_increment)
newval = b_.CreateAdd(oldval, b_.getInt64(1));
@@ -1411,9 +1441,10 @@ void CodegenLLVM::visit(Unop &unop)
: type.GetSize();
auto as = type.GetAS();
- AllocaInst *dst = b_.CreateAllocaBPF(SizedType(type.type, size), "deref");
+ auto dst_type = SizedType(type.type, size);
+ AllocaInst *dst = b_.CreateAllocaBPF(dst_type, "deref");
b_.CreateProbeRead(ctx_, dst, size, expr_, as, unop.loc);
- expr_ = b_.CreateIntCast(b_.CreateLoad(dst),
+ expr_ = b_.CreateIntCast(b_.CreateLoad(b_.GetType(dst_type), dst),
b_.getInt64Ty(),
type.IsSigned());
b_.CreateLifetimeEnd(dst);
@@ -1434,7 +1465,7 @@ void CodegenLLVM::visit(Unop &unop)
int size = unop.type.IsIntegerTy() ? et->GetIntBitWidth() / 8 : 8;
AllocaInst *dst = b_.CreateAllocaBPF(*et, "deref");
b_.CreateProbeRead(ctx_, dst, size, expr_, type.GetAS(), unop.loc);
- expr_ = b_.CreateIntCast(b_.CreateLoad(dst),
+ expr_ = b_.CreateIntCast(b_.CreateLoad(b_.GetType(*et), dst),
b_.getInt64Ty(),
unop.type.IsSigned());
b_.CreateLifetimeEnd(dst);
@@ -1492,7 +1523,7 @@ void CodegenLLVM::visit(Ternary &ternary)
b_.CreateBr(done);
b_.SetInsertPoint(done);
- expr_ = b_.CreateLoad(result);
+ expr_ = b_.CreateLoad(b_.GetType(ternary.type), result);
}
else if (ternary.type.IsStringTy())
{
@@ -1549,7 +1580,8 @@ void CodegenLLVM::visit(FieldAccess &acc)
}
else if (type.IsTupleTy())
{
- Value *src = b_.CreateGEP(expr_,
+ Value *src = b_.CreateGEP(b_.GetType(type),
+ expr_,
{ b_.getInt32(0), b_.getInt32(acc.index) });
SizedType &elem_type = type.GetFields()[acc.index].type;
@@ -1596,10 +1628,12 @@ void CodegenLLVM::visit(FieldAccess &acc)
if (field.is_bitfield)
{
Value *raw;
+ auto field_type = b_.GetType(field.type);
if (type.IsCtxAccess())
- raw = b_.CreateLoad(
- b_.CreateIntToPtr(src, b_.GetType(field.type)->getPointerTo()),
- true);
+ raw = b_.CreateLoad(field_type,
+ b_.CreateIntToPtr(src,
+ field_type->getPointerTo()),
+ true);
else
{
AllocaInst *dst = b_.CreateAllocaBPF(field.type,
@@ -1610,7 +1644,7 @@ void CodegenLLVM::visit(FieldAccess &acc)
b_.CREATE_MEMSET(dst, b_.getInt8(0), field.type.GetSize(), 1);
b_.CreateProbeRead(
ctx_, dst, field.bitfield.read_bytes, src, type.GetAS(), acc.loc);
- raw = b_.CreateLoad(dst);
+ raw = b_.CreateLoad(field_type, dst);
b_.CreateLifetimeEnd(dst);
}
size_t rshiftbits;
@@ -1638,7 +1672,8 @@ void CodegenLLVM::visit(FieldAccess &acc)
// offset which we add to the start of the tracepoint struct.
expr_ = b_.CreateLoad(
b_.getInt32Ty(),
- b_.CreateGEP(b_.CreatePointerCast(ctx_,
+ b_.CreateGEP(b_.getInt32Ty(),
+ b_.CreatePointerCast(ctx_,
b_.getInt32Ty()->getPointerTo()),
b_.getInt64(field.offset / 4)));
expr_ = b_.CreateIntCast(expr_, b_.getInt64Ty(), false);
@@ -1757,7 +1792,9 @@ void CodegenLLVM::visit(Tuple &tuple)
Expression *elem = tuple.elems->at(i);
auto scoped_del = accept(elem);
- Value *dst = b_.CreateGEP(buf, { b_.getInt32(0), b_.getInt32(i) });
+ Value *dst = b_.CreateGEP(tuple_ty,
+ buf,
+ { b_.getInt32(0), b_.getInt32(i) });
if (onStack(elem->type))
b_.CREATE_MEMCPY(dst, expr_, elem->type.GetSize(), 1);
@@ -2357,6 +2394,7 @@ std::tuple<Value *, CodegenLLVM::ScopedExprDeleter> CodegenLLVM::getMapKey(
size += expr->type.GetSize();
}
key = b_.CreateAllocaBPF(size, map.ident + "_key");
+ auto *key_type = ArrayType::get(b_.getInt8Ty(), size);
int offset = 0;
// Construct a map key in the stack
@@ -2364,7 +2402,8 @@ std::tuple<Value *, CodegenLLVM::ScopedExprDeleter> CodegenLLVM::getMapKey(
{
auto scoped_del = accept(expr);
Value *offset_val = b_.CreateGEP(
- key, { b_.getInt64(0), b_.getInt64(offset) });
+ key_type, key,
+ { b_.getInt64(0), b_.getInt64(offset) });
if (onStack(expr->type))
b_.CREATE_MEMCPY(offset_val, expr_, expr->type.GetSize(), 1);
@@ -2417,18 +2456,19 @@ AllocaInst *CodegenLLVM::getHistMapKey(Map &map, Value *log2)
size += expr->type.GetSize();
}
key = b_.CreateAllocaBPF(size, map.ident + "_key");
+ auto *key_type = ArrayType::get(b_.getInt8Ty(), size);
int offset = 0;
for (Expression *expr : *map.vargs) {
auto scoped_del = accept(expr);
- Value *offset_val = b_.CreateGEP(key, {b_.getInt64(0), b_.getInt64(offset)});
+ Value *offset_val = b_.CreateGEP(key_type, key, {b_.getInt64(0), b_.getInt64(offset)});
if (shouldBeOnStackAlready(expr->type))
b_.CREATE_MEMCPY(offset_val, expr_, expr->type.GetSize(), 1);
else
b_.CreateStore(expr_, offset_val);
offset += expr->type.GetSize();
}
- Value *offset_val = b_.CreateGEP(key, {b_.getInt64(0), b_.getInt64(offset)});
+ Value *offset_val = b_.CreateGEP(key_type, key, {b_.getInt64(0), b_.getInt64(offset)});
b_.CreateStore(log2, offset_val);
}
else
@@ -2475,7 +2515,7 @@ Value *CodegenLLVM::createLogicalAnd(Binop &binop)
b_.CreateBr(merge_block);
b_.SetInsertPoint(merge_block);
- return b_.CreateLoad(result);
+ return b_.CreateLoad(b_.getInt64Ty(), result);
}
Value *CodegenLLVM::createLogicalOr(Binop &binop)
@@ -2514,7 +2554,7 @@ Value *CodegenLLVM::createLogicalOr(Binop &binop)
b_.CreateBr(merge_block);
b_.SetInsertPoint(merge_block);
- return b_.CreateLoad(result);
+ return b_.CreateLoad(b_.getInt64Ty(), result);
}
Function *CodegenLLVM::createLog2Function()
@@ -2558,34 +2598,37 @@ Function *CodegenLLVM::createLog2Function()
// test for less than zero
BasicBlock *is_less_than_zero = BasicBlock::Create(module_->getContext(), "hist.is_less_than_zero", log2_func);
BasicBlock *is_not_less_than_zero = BasicBlock::Create(module_->getContext(), "hist.is_not_less_than_zero", log2_func);
- b_.CreateCondBr(b_.CreateICmpSLT(b_.CreateLoad(n_alloc), b_.getInt64(0)),
+ b_.CreateCondBr(b_.CreateICmpSLT(b_.CreateLoad(b_.getInt64Ty(), n_alloc),
+ b_.getInt64(0)),
is_less_than_zero,
is_not_less_than_zero);
b_.SetInsertPoint(is_less_than_zero);
- createRet(b_.CreateLoad(result));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result));
b_.SetInsertPoint(is_not_less_than_zero);
// test for equal to zero
BasicBlock *is_zero = BasicBlock::Create(module_->getContext(), "hist.is_zero", log2_func);
BasicBlock *is_not_zero = BasicBlock::Create(module_->getContext(), "hist.is_not_zero", log2_func);
- b_.CreateCondBr(b_.CreateICmpEQ(b_.CreateLoad(n_alloc), b_.getInt64(0)),
+ b_.CreateCondBr(b_.CreateICmpEQ(b_.CreateLoad(b_.getInt64Ty(), n_alloc),
+ b_.getInt64(0)),
is_zero,
is_not_zero);
b_.SetInsertPoint(is_zero);
b_.CreateStore(b_.getInt64(1), result);
- createRet(b_.CreateLoad(result));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result));
b_.SetInsertPoint(is_not_zero);
// power-of-2 index, offset by +2
b_.CreateStore(b_.getInt64(2), result);
for (int i = 4; i >= 0; i--)
{
- Value *n = b_.CreateLoad(n_alloc);
+ Value *n = b_.CreateLoad(b_.getInt64Ty(), n_alloc);
Value *shift = b_.CreateShl(b_.CreateIntCast(b_.CreateICmpSGE(b_.CreateIntCast(n, b_.getInt64Ty(), false), b_.getInt64(1 << (1<<i))), b_.getInt64Ty(), false), i);
b_.CreateStore(b_.CreateLShr(n, shift), n_alloc);
- b_.CreateStore(b_.CreateAdd(b_.CreateLoad(result), shift), result);
+ b_.CreateStore(b_.CreateAdd(b_.CreateLoad(b_.getInt64Ty(), result), shift),
+ result);
}
- createRet(b_.CreateLoad(result));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result));
b_.restoreIP(ip);
return module_->getFunction("log2");
}
@@ -2635,8 +2678,8 @@ Function *CodegenLLVM::createLinearFunction()
// algorithm
{
- Value *min = b_.CreateLoad(min_alloc);
- Value *val = b_.CreateLoad(value_alloc);
+ Value *min = b_.CreateLoad(b_.getInt64Ty(), min_alloc);
+ Value *val = b_.CreateLoad(b_.getInt64Ty(), value_alloc);
cmp = b_.CreateICmpSLT(val, min);
}
BasicBlock *lt_min = BasicBlock::Create(module_->getContext(), "lhist.lt_min", linear_func);
@@ -2648,8 +2691,8 @@ Function *CodegenLLVM::createLinearFunction()
b_.SetInsertPoint(ge_min);
{
- Value *max = b_.CreateLoad(max_alloc);
- Value *val = b_.CreateLoad(value_alloc);
+ Value *max = b_.CreateLoad(b_.getInt64Ty(), max_alloc);
+ Value *val = b_.CreateLoad(b_.getInt64Ty(), value_alloc);
cmp = b_.CreateICmpSGT(val, max);
}
BasicBlock *le_max = BasicBlock::Create(module_->getContext(), "lhist.le_max", linear_func);
@@ -2658,22 +2701,22 @@ Function *CodegenLLVM::createLinearFunction()
b_.SetInsertPoint(gt_max);
{
- Value *step = b_.CreateLoad(step_alloc);
- Value *min = b_.CreateLoad(min_alloc);
- Value *max = b_.CreateLoad(max_alloc);
+ Value *step = b_.CreateLoad(b_.getInt64Ty(), step_alloc);
+ Value *min = b_.CreateLoad(b_.getInt64Ty(), min_alloc);
+ Value *max = b_.CreateLoad(b_.getInt64Ty(), max_alloc);
Value *div = b_.CreateUDiv(b_.CreateSub(max, min), step);
b_.CreateStore(b_.CreateAdd(div, b_.getInt64(1)), result_alloc);
- createRet(b_.CreateLoad(result_alloc));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result_alloc));
}
b_.SetInsertPoint(le_max);
{
- Value *step = b_.CreateLoad(step_alloc);
- Value *min = b_.CreateLoad(min_alloc);
- Value *val = b_.CreateLoad(value_alloc);
+ Value *step = b_.CreateLoad(b_.getInt64Ty(), step_alloc);
+ Value *min = b_.CreateLoad(b_.getInt64Ty(), min_alloc);
+ Value *val = b_.CreateLoad(b_.getInt64Ty(), value_alloc);
Value *div3 = b_.CreateUDiv(b_.CreateSub(val, min), step);
b_.CreateStore(b_.CreateAdd(div3, b_.getInt64(1)), result_alloc);
- createRet(b_.CreateLoad(result_alloc));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result_alloc));
}
b_.restoreIP(ip);
@@ -2711,14 +2754,18 @@ void CodegenLLVM::createFormatStringCall(Call &call, int &id, CallArgs &call_arg
// as the struct is not packed we need to memset it.
b_.CREATE_MEMSET(fmt_args, b_.getInt8(0), struct_size, 1);
- Value *id_offset = b_.CreateGEP(fmt_args, {b_.getInt32(0), b_.getInt32(0)});
+ Value *id_offset = b_.CreateGEP(fmt_struct,
+ fmt_args,
+ { b_.getInt32(0), b_.getInt32(0) });
b_.CreateStore(b_.getInt64(id + asyncactionint(async_action)), id_offset);
for (size_t i=1; i<call.vargs->size(); i++)
{
Expression &arg = *call.vargs->at(i);
auto scoped_del = accept(&arg);
- Value *offset = b_.CreateGEP(fmt_args, {b_.getInt32(0), b_.getInt32(i)});
+ Value *offset = b_.CreateGEP(fmt_struct,
+ fmt_args,
+ { b_.getInt32(0), b_.getInt32(i) });
if (needMemcpy(arg.type))
b_.CREATE_MEMCPY(offset, expr_, arg.type.GetSize(), 1);
else if (arg.type.IsIntegerTy() && arg.type.GetSize() < 8)
@@ -2758,10 +2805,12 @@ void CodegenLLVM::generateWatchpointSetupProbe(
// Pull out function argument
Value *ctx = func->arg_begin();
int offset = arch::arg_offset(arg_num);
- Value *addr = b_.CreateLoad(
- b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(offset * sizeof(uintptr_t))),
- "arg" + std::to_string(arg_num));
+ Value *arg = b_.CreateGEP(b_.getInt8Ty(),
+ ctx,
+ b_.getInt64(offset * sizeof(uintptr_t)));
+ Value *addr = b_.CreateLoad(b_.getInt64Ty(),
+ arg,
+ "arg" + std::to_string(arg_num));
// Tell userspace to setup the real watchpoint
auto elements = AsyncEvent::Watchpoint().asLLVMType(b_);
@@ -2772,12 +2821,16 @@ void CodegenLLVM::generateWatchpointSetupProbe(
size_t struct_size = datalayout().getTypeAllocSize(watchpoint_struct);
// Fill in perf event struct
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::watchpoint_attach)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
- b_.CreateStore(b_.getInt64(watchpoint_id_),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::watchpoint_attach)),
+ b_.CreateGEP(watchpoint_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(watchpoint_id_),
+ b_.CreateGEP(watchpoint_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
watchpoint_id_++;
- b_.CreateStore(addr, b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(2) }));
+ b_.CreateStore(
+ addr,
+ b_.CreateGEP(watchpoint_struct, buf, { b_.getInt64(0), b_.getInt32(2) }));
b_.CreatePerfEventOutput(ctx, buf, struct_size);
b_.CreateLifetimeEnd(buf);
@@ -2796,11 +2849,14 @@ void CodegenLLVM::createPrintMapCall(Call &call)
call.func + "_" + map.ident);
// store asyncactionid:
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::print)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::print)),
+ b_.CreateGEP(print_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
auto id = bpftrace_.maps[map.ident].value()->id;
- auto *ident_ptr = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) });
+ auto *ident_ptr = b_.CreateGEP(print_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(1) });
b_.CreateStore(b_.GetIntSameSize(id, elements.at(1)), ident_ptr);
// top, div
@@ -2812,14 +2868,16 @@ void CodegenLLVM::createPrintMapCall(Call &call)
auto scoped_del = accept(call.vargs->at(arg_idx));
b_.CreateStore(b_.CreateIntCast(expr_, elements.at(arg_idx), false),
- b_.CreateGEP(buf,
+ b_.CreateGEP(print_struct,
+ buf,
{ b_.getInt64(0), b_.getInt32(arg_idx + 1) }));
}
for (; arg_idx < 3; arg_idx++)
{
b_.CreateStore(b_.GetIntSameSize(0, elements.at(arg_idx)),
- b_.CreateGEP(buf,
+ b_.CreateGEP(print_struct,
+ buf,
{ b_.getInt64(0), b_.getInt32(arg_idx + 1) }));
}
@@ -2844,15 +2902,19 @@ void CodegenLLVM::createPrintNonMapCall(Call &call, int &id)
size_t struct_size = datalayout().getTypeAllocSize(print_struct);
// Store asyncactionid:
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::print_non_map)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::print_non_map)),
+ b_.CreateGEP(print_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
// Store print id
- b_.CreateStore(b_.getInt64(id),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ b_.getInt64(id),
+ b_.CreateGEP(print_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
// Store content
- Value *content_offset = b_.CreateGEP(buf, { b_.getInt32(0), b_.getInt32(2) });
+ Value *content_offset = b_.CreateGEP(print_struct,
+ buf,
+ { b_.getInt32(0), b_.getInt32(2) });
b_.CREATE_MEMSET(content_offset, b_.getInt8(0), arg.type.GetSize(), 1);
if (needMemcpy(arg.type))
{
@@ -3023,7 +3085,9 @@ void CodegenLLVM::readDatastructElemFromStack(Value *src_data,
src_data = b_.CreateIntToPtr(src_data,
b_.GetType(data_type)->getPointerTo());
- Value *src = b_.CreateGEP(src_data, { b_.getInt32(0), index });
+ Value *src = b_.CreateGEP(b_.GetType(data_type),
+ src_data,
+ { b_.getInt32(0), index });
// It may happen that the result pointer type is not correct, in such case
// do a typecast
@@ -3034,7 +3098,7 @@ void CodegenLLVM::readDatastructElemFromStack(Value *src_data,
if (elem_type.IsIntegerTy() || elem_type.IsPtrTy())
{
// Load the correct type from src
- expr_ = b_.CreateLoad(src, true);
+ expr_ = b_.CreateLoad(b_.GetType(elem_type), src, true);
}
else
{
@@ -3101,7 +3165,8 @@ void CodegenLLVM::probereadDatastructElem(Value *src_data,
// Read data onto stack
if (data_type.IsCtxAccess())
{
- expr_ = b_.CreateLoad(b_.CreateIntToPtr(src, dst_type->getPointerTo()),
+ expr_ = b_.CreateLoad(dst_type,
+ b_.CreateIntToPtr(src, dst_type->getPointerTo()),
true);
expr_ = b_.CreateIntCast(expr_, b_.getInt64Ty(), elem_type.IsSigned());
@@ -3132,7 +3197,7 @@ void CodegenLLVM::probereadDatastructElem(Value *src_data,
AllocaInst *dst = b_.CreateAllocaBPF(elem_type, temp_name);
b_.CreateProbeRead(
ctx_, dst, elem_type.GetSize(), src, data_type.GetAS(), loc);
- expr_ = b_.CreateIntCast(b_.CreateLoad(dst),
+ expr_ = b_.CreateIntCast(b_.CreateLoad(b_.GetType(elem_type), dst),
b_.getInt64Ty(),
elem_type.IsSigned());
b_.CreateLifetimeEnd(dst);
diff --git a/src/ast/irbuilderbpf.cpp b/src/ast/irbuilderbpf.cpp
index ab1464d3..59771e91 100644
--- a/src/ast/irbuilderbpf.cpp
+++ b/src/ast/irbuilderbpf.cpp
@@ -94,8 +94,8 @@ AllocaInst *IRBuilderBPF::CreateUSym(llvm::Value *val)
Value *pid = CreateLShr(CreateGetPidTgid(), 32);
// The extra 0 here ensures the type of addr_offset will be int64
- Value *addr_offset = CreateGEP(buf, { getInt64(0), getInt32(0) });
- Value *pid_offset = CreateGEP(buf, { getInt64(0), getInt32(1) });
+ Value *addr_offset = CreateGEP(usym_t, buf, { getInt64(0), getInt32(0) });
+ Value *pid_offset = CreateGEP(usym_t, buf, { getInt64(0), getInt32(1) });
CreateStore(val, addr_offset);
CreateStore(pid, pid_offset);
@@ -401,7 +401,8 @@ Value *IRBuilderBPF::CreateMapLookupElem(Value *ctx,
if (needMemcpy(type))
return value;
- Value *ret = CreateLoad(value);
+ // value is a pointer to i64
+ Value *ret = CreateLoad(getInt64Ty(), value);
CreateLifetimeEnd(value);
return ret;
}
@@ -621,7 +622,10 @@ Value *IRBuilderBPF::CreateUSDTReadArgument(Value *ctx,
// bpftrace's args are internally represented as 64 bit integers. However,
// the underlying argument (of the target program) may be less than 64
// bits. So we must be careful to zero out unused bits.
- Value* reg = CreateGEP(ctx, getInt64(offset * sizeof(uintptr_t)), "load_register");
+ Value *reg = CreateGEP(getInt8Ty(),
+ ctx,
+ getInt64(offset * sizeof(uintptr_t)),
+ "load_register");
AllocaInst *dst = CreateAllocaBPF(builtin.type, builtin.ident);
Value *index_offset = nullptr;
if (argument->valid & BCC_USDT_ARGUMENT_INDEX_REGISTER_NAME)
@@ -632,7 +636,8 @@ Value *IRBuilderBPF::CreateUSDTReadArgument(Value *ctx,
LOG(FATAL) << "offset for register " << argument->index_register_name
<< " not known";
}
- index_offset = CreateGEP(ctx,
+ index_offset = CreateGEP(getInt8Ty(),
+ ctx,
getInt64(ioffset * sizeof(uintptr_t)),
"load_register");
index_offset = CreateLoad(getInt64Ty(), index_offset);
@@ -754,7 +759,7 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx __attribute__((unused)),
"strcmp.loop",
parent);
- auto *ptr = CreateGEP(val, { getInt32(0), getInt32(i) });
+ auto *ptr = CreateGEP(valp->getElementType(), val, { getInt32(0), getInt32(i) });
Value *l = CreateLoad(getInt8Ty(), ptr);
Value *r = getInt8(c_str[i]);
Value *cmp = CreateICmpNE(l, r, "strcmp.cmp");
@@ -767,7 +772,8 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx __attribute__((unused)),
CreateBr(str_ne);
SetInsertPoint(str_ne);
- Value *result = CreateLoad(store);
+ // store is a pointer to bool (i1 *)
+ Value *result = CreateLoad(getInt1Ty(), store);
CreateLifetimeEnd(store);
result = CreateIntCast(result, getInt64Ty(), false);
return result;
@@ -817,9 +823,11 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx,
}
*/
+ auto *val1p = dyn_cast<PointerType>(val1->getType());
+ auto *val2p = dyn_cast<PointerType>(val2->getType());
#ifndef NDEBUG
- PointerType *val1p = cast<PointerType>(val1->getType());
- PointerType *val2p = cast<PointerType>(val2->getType());
+ assert(val1p);
+ assert(val2p);
assert(val1p->getElementType()->isArrayTy() &&
val1p->getElementType()->getArrayElementType() == getInt8Ty());
@@ -852,11 +860,11 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx,
"strcmp.loop_null_cmp",
parent);
- auto *ptr1 = CreateGEP(val1, { getInt32(0), getInt32(i) });
+ auto *ptr1 = CreateGEP(val1p->getElementType(), val1, { getInt32(0), getInt32(i) });
CreateProbeRead(ctx, val_l, 1, ptr1, as1, loc);
Value *l = CreateLoad(getInt8Ty(), val_l);
- auto *ptr2 = CreateGEP(val2, { getInt32(0), getInt32(i) });
+ auto *ptr2 = CreateGEP(val2p->getElementType(), val2, { getInt32(0), getInt32(i) });
CreateProbeRead(ctx, val_r, 1, ptr2, as2, loc);
Value *r = CreateLoad(getInt8Ty(), val_r);
@@ -878,7 +886,8 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx,
CreateBr(str_ne);
SetInsertPoint(str_ne);
- Value *result = CreateLoad(store);
+ // store is a pointer to bool (i1 *)
+ Value *result = CreateLoad(getInt1Ty(), store);
CreateLifetimeEnd(store);
CreateLifetimeEnd(val_l);
CreateLifetimeEnd(val_r);
@@ -1107,7 +1116,7 @@ Value *IRBuilderBPF::CreatKFuncArg(Value *ctx,
{
ctx = CreatePointerCast(ctx, getInt64Ty()->getPointerTo());
Value *expr = CreateLoad(getInt64Ty(),
- CreateGEP(ctx, getInt64(type.kfarg_idx)),
+ CreateGEP(getInt64Ty(), ctx, getInt64(type.kfarg_idx)),
name);
// LLVM 7.0 <= does not have CreateLoad(*Ty, *Ptr, isVolatile, Name),
@@ -1161,12 +1170,15 @@ void IRBuilderBPF::CreateHelperError(Value *ctx,
elements,
true);
AllocaInst *buf = CreateAllocaBPF(helper_error_struct, "helper_error_t");
- CreateStore(GetIntSameSize(asyncactionint(AsyncAction::helper_error),
- elements.at(0)),
- CreateGEP(buf, { getInt64(0), getInt32(0) }));
- CreateStore(GetIntSameSize(error_id, elements.at(1)),
- CreateGEP(buf, { getInt64(0), getInt32(1) }));
- CreateStore(return_value, CreateGEP(buf, { getInt64(0), getInt32(2) }));
+ CreateStore(
+ GetIntSameSize(asyncactionint(AsyncAction::helper_error), elements.at(0)),
+ CreateGEP(helper_error_struct, buf, { getInt64(0), getInt32(0) }));
+ CreateStore(
+ GetIntSameSize(error_id, elements.at(1)),
+ CreateGEP(helper_error_struct, buf, { getInt64(0), getInt32(1) }));
+ CreateStore(
+ return_value,
+ CreateGEP(helper_error_struct, buf, { getInt64(0), getInt32(2) }));
auto &layout = module_.getDataLayout();
auto struct_size = layout.getTypeAllocSize(helper_error_struct);
@@ -1256,11 +1268,13 @@ void IRBuilderBPF::CreateSeqPrintf(Value *ctx,
ctx = CreatePointerCast(ctx, getInt8Ty()->getPointerTo());
Value *meta = CreateLoad(getInt64Ty()->getPointerTo(),
- CreateGEP(ctx, getInt64(0)),
+ CreateGEP(getInt8Ty(), ctx, getInt64(0)),
"meta");
dyn_cast<LoadInst>(meta)->setVolatile(true);
- Value *seq = CreateLoad(getInt64Ty(), CreateGEP(meta, getInt64(0)), "seq");
+ Value *seq = CreateLoad(getInt64Ty(),
+ CreateGEP(getInt64Ty(), meta, getInt64(0)),
+ "seq");
CallInst *call = createCall(seq_printf_func,
{ seq, fmt, fmt_size, data, data_len },
--
2.35.3

42
SOURCES/bpftrace-0.13.1-Fix-compile-under-llvm14-trunk.patch
View File

@ -1,42 +0,0 @@
From aee721b9b5ed72c287b302df20ea0fffc3cd72bd Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Thu, 21 Oct 2021 14:43:38 -0700
Subject: [PATCH 7/7] Fix compile under llvm14 (trunk)
---
CMakeLists.txt | 2 +-
src/bpforc.h | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3beeb027..3cfae6cb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -159,7 +159,7 @@ else()
find_package(LLVM REQUIRED)
endif()
- if((${LLVM_VERSION_MAJOR} VERSION_LESS 6) OR (${LLVM_VERSION_MAJOR} VERSION_GREATER 12))
+ if((${LLVM_VERSION_MAJOR} VERSION_LESS 6) OR (${LLVM_VERSION_MAJOR} VERSION_GREATER 14))
message(SEND_ERROR "Unsupported LLVM version found: ${LLVM_INCLUDE_DIRS}")
message(SEND_ERROR "Specify an LLVM major version using LLVM_REQUESTED_VERSION=<major version>")
endif()
diff --git a/src/bpforc.h b/src/bpforc.h
index cc6a1c97..a0e5c9b8 100644
--- a/src/bpforc.h
+++ b/src/bpforc.h
@@ -14,7 +14,11 @@
#include <llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h>
#include <llvm/ExecutionEngine/SectionMemoryManager.h>
#include <llvm/Support/Error.h>
+#if LLVM_VERSION_MAJOR < 14
#include <llvm/Support/TargetRegistry.h>
+#else
+#include <llvm/MC/TargetRegistry.h>
+#endif
#include <llvm/Target/TargetMachine.h>
#ifdef LLVM_ORC_V2
--
2.35.3

39
SOURCES/bpftrace-0.13.1-Fix-libbtf-0.6.0-build.patch
View File

@ -1,39 +0,0 @@
From d26accaba6f911cf82be7e9791bf6440213c5627 Mon Sep 17 00:00:00 2001
From: Jerome Marchand <jmarchan@redhat.com>
Date: Wed, 23 Mar 2022 09:47:25 +0100
Subject: [PATCH 4/6] Fix libbtf 0.6.0 build
Libbtf 0.6.0 introduced a new version of btf_dump__new(). The new
version is btf_dump__new_v0_6_0() while the old version was renamed
btf_dump__new_deprecated(). btf_dump__new() is now overloaded,
unfortunately the macro doesn't work on cpp, at least with LLVM 12.
Let's call btf_dump__new_deprecated() explicitely when it's defined.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
---
src/btf.cpp | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/btf.cpp b/src/btf.cpp
index a5a5e2c0..fccf0a00 100644
--- a/src/btf.cpp
+++ b/src/btf.cpp
@@ -24,6 +24,15 @@
#pragma GCC diagnostic pop
#include <bpf/libbpf.h>
+/*
+ * Since libbtf 0.6, btf_dump__new() has been overloaded and now can design
+ * either btf_dump__new_v0_6_0() or btf_dump__new_deprecated(), which is the
+ * same as btf_dump__new() for libbtf < 0.6, and the one we still use.
+ */
+#if LIBBPF_MAJOR_VERSION == 0 && LIBBPF_MINOR_VERSION >= 6
+#define btf_dump__new(a1, a2, a3, a4) btf_dump__new_deprecated(a1, a2, a3, a4)
+#endif
+
#include "bpftrace.h"
namespace bpftrace {
--
2.35.3

28
SOURCES/bpftrace-0.13.1-Fix-mdflush.patch
View File

@ -1,28 +0,0 @@
From 0585b27f6070c0d4016ae9b0d6e1a28261f2e2d2 Mon Sep 17 00:00:00 2001
From: Jerome Marchand <jmarchan@redhat.com>
Date: Fri, 15 Oct 2021 14:26:28 +0200
Subject: [PATCH 2/6] Fix mdflush
Since kernel commit 309dca309fc ("block: store a block_device pointer
in struct bio") struct bio points again to a block_device and not to a
gendisk directly.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
---
tools/mdflush.bt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/mdflush.bt b/tools/mdflush.bt
index e767b81d..541abba1 100755
--- a/tools/mdflush.bt
+++ b/tools/mdflush.bt
@@ -26,5 +26,5 @@ kprobe:md_flush_request
{
time("%H:%M:%S ");
printf("%-6d %-16s %s\n", pid, comm,
- ((struct bio *)arg1)->bi_disk->disk_name);
+ ((struct bio *)arg1)->bi_bdev->bd_disk->disk_name);
}
--
2.35.3

58
SOURCES/bpftrace-0.13.1-RHEL-9-fixes.patch
View File

@ -1,58 +0,0 @@
From 4d7c2c148f7fb788d74e6cd3b6d65c07a815b0c1 Mon Sep 17 00:00:00 2001
From: Jerome Marchand <jmarchan@redhat.com>
Date: Tue, 11 Jun 2019 16:41:59 +0200
Subject: [PATCH 1/6] RHEL 9 fixes
Fixes the following RHEL 8 specific issues:
- library path in gethostlatency and threadsnoop
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
---
tools/gethostlatency.bt | 12 ++++++------
tools/threadsnoop.bt | 2 +-
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/tools/gethostlatency.bt b/tools/gethostlatency.bt
index 9f4ec31e..dd389c6f 100755
--- a/tools/gethostlatency.bt
+++ b/tools/gethostlatency.bt
@@ -26,17 +26,17 @@ BEGIN
"HOST");
}
-uprobe:/lib/x86_64-linux-gnu/libc.so.6:getaddrinfo,
-uprobe:/lib/x86_64-linux-gnu/libc.so.6:gethostbyname,
-uprobe:/lib/x86_64-linux-gnu/libc.so.6:gethostbyname2
+uprobe:/lib64/libc.so.6:getaddrinfo,
+uprobe:/lib64/libc.so.6:gethostbyname,
+uprobe:/lib64/libc.so.6:gethostbyname2
{
@start[tid] = nsecs;
@name[tid] = arg0;
}
-uretprobe:/lib/x86_64-linux-gnu/libc.so.6:getaddrinfo,
-uretprobe:/lib/x86_64-linux-gnu/libc.so.6:gethostbyname,
-uretprobe:/lib/x86_64-linux-gnu/libc.so.6:gethostbyname2
+uretprobe:/lib64/libc.so.6:getaddrinfo,
+uretprobe:/lib64/libc.so.6:gethostbyname,
+uretprobe:/lib64/libc.so.6:gethostbyname2
/@start[tid]/
{
$latms = (nsecs - @start[tid]) / 1e6;
diff --git a/tools/threadsnoop.bt b/tools/threadsnoop.bt
index 3824bc6d..ab52bc48 100755
--- a/tools/threadsnoop.bt
+++ b/tools/threadsnoop.bt
@@ -18,7 +18,7 @@ BEGIN
printf("%-10s %-6s %-16s %s\n", "TIME(ms)", "PID", "COMM", "FUNC");
}
-uprobe:/lib/x86_64-linux-gnu/libpthread.so.0:pthread_create
+uprobe:/usr/lib64/libpthread.so.0:pthread_create
{
printf("%-10u %-6d %-16s %s\n", elapsed / 1e6, pid, comm,
usym(arg2));
--
2.35.3

78
SOURCES/bpftrace-0.13.1-Update-bio-tools-to-work-on-kernel-5.16.patch
View File

@ -1,78 +0,0 @@
From ff22437ef4310a2ab37d732bdd1496a926315691 Mon Sep 17 00:00:00 2001
From: Viktor Malik <viktor.malik@gmail.com>
Date: Mon, 17 Jan 2022 11:15:26 +0100
Subject: [PATCH 5/6] Update bio* tools to work on kernel 5.16+
Kernel 5.16 contains commit:
https://github.com/torvalds/linux/commit/be6bfe36db1795babe9d92178a47b2e02193cb0f
which renamed some of the functions that the bio* tools attach to.
---
tools/biolatency.bt | 6 ++++--
tools/biosnoop.bt | 6 ++++--
tools/biostacks.bt | 3 ++-
3 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/tools/biolatency.bt b/tools/biolatency.bt
index 4ea910b4..d5af1f29 100755
--- a/tools/biolatency.bt
+++ b/tools/biolatency.bt
@@ -16,12 +16,14 @@ BEGIN
printf("Tracing block device I/O... Hit Ctrl-C to end.\n");
}
-kprobe:blk_account_io_start
+kprobe:blk_account_io_start,
+kprobe:__blk_account_io_start
{
@start[arg0] = nsecs;
}
-kprobe:blk_account_io_done
+kprobe:blk_account_io_done,
+kprobe:__blk_account_io_done
/@start[arg0]/
{
@usecs = hist((nsecs - @start[arg0]) / 1000);
diff --git a/tools/biosnoop.bt b/tools/biosnoop.bt
index 38ffeb52..aa88f4ba 100755
--- a/tools/biosnoop.bt
+++ b/tools/biosnoop.bt
@@ -16,7 +16,8 @@ BEGIN
printf("%-12s %-7s %-16s %-6s %7s\n", "TIME(ms)", "DISK", "COMM", "PID", "LAT(ms)");
}
-kprobe:blk_account_io_start
+kprobe:blk_account_io_start,
+kprobe:__blk_account_io_start
{
@start[arg0] = nsecs;
@iopid[arg0] = pid;
@@ -24,7 +25,8 @@ kprobe:blk_account_io_start
@disk[arg0] = ((struct request *)arg0)->rq_disk->disk_name;
}
-kprobe:blk_account_io_done
+kprobe:blk_account_io_done,
+kprobe:__blk_account_io_done
/@start[arg0] != 0 && @iopid[arg0] != 0 && @iocomm[arg0] != ""/
{
diff --git a/tools/biostacks.bt b/tools/biostacks.bt
index 58201cdf..1bc9f819 100755
--- a/tools/biostacks.bt
+++ b/tools/biostacks.bt
@@ -18,7 +18,8 @@ BEGIN
printf("Tracing block I/O with init stacks. Hit Ctrl-C to end.\n");
}
-kprobe:blk_account_io_start
+kprobe:blk_account_io_start,
+kprobe:__blk_account_io_start
{
@reqstack[arg0] = kstack;
@reqts[arg0] = nsecs;
--
2.35.3

98
SOURCES/bpftrace-0.13.1-biosnoop.bt-handle-Linux-5.17-block-layer-update.patch
View File

@ -1,98 +0,0 @@
From bcb8903067ce7a45b67ad0d5cabf83154b56d5ab Mon Sep 17 00:00:00 2001
From: Viktor Malik <viktor.malik@gmail.com>
Date: Mon, 9 May 2022 07:58:46 +0200
Subject: [PATCH 10/10] biosnoop.bt: handle Linux 5.17 block layer update
The kernel upstream commit:
https://github.com/torvalds/linux/commit/f3fa33acca9f0058157214800f68b10d8e71ab7a
has removed the `rq_disk` field from `struct request`. Instead,
`->q->disk` should be used, so this is reflected in biosnoop.bt.
The old version of the tool (suitable for kernel <= 5.16) is backed up
in tools/old and used in the CI.
---
tools/biosnoop.bt | 2 +-
tools/old/biosnoop.bt | 56 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 57 insertions(+), 1 deletion(-)
create mode 100755 tools/old/biosnoop.bt
diff --git a/tools/biosnoop.bt b/tools/biosnoop.bt
index 33ad75de..c00ef428 100755
--- a/tools/biosnoop.bt
+++ b/tools/biosnoop.bt
@@ -25,7 +25,7 @@ kprobe:__blk_account_io_start
@start[arg0] = nsecs;
@iopid[arg0] = pid;
@iocomm[arg0] = comm;
- @disk[arg0] = ((struct request *)arg0)->rq_disk->disk_name;
+ @disk[arg0] = ((struct request *)arg0)->q->disk->disk_name;
}
kprobe:blk_account_io_done,
diff --git a/tools/old/biosnoop.bt b/tools/old/biosnoop.bt
new file mode 100755
index 00000000..1a99643a
--- /dev/null
+++ b/tools/old/biosnoop.bt
@@ -0,0 +1,56 @@
+#!/usr/bin/env bpftrace
+/*
+ * biosnoop.bt Block I/O tracing tool, showing per I/O latency.
+ * For Linux, uses bpftrace, eBPF.
+ *
+ * TODO: switch to block tracepoints. Add offset and size columns.
+ *
+ * This is a bpftrace version of the bcc tool of the same name.
+ *
+ * For Linux <= 5.16.
+ *
+ * 15-Nov-2017 Brendan Gregg Created this.
+ */
+
+#ifndef BPFTRACE_HAVE_BTF
+#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
+#endif
+
+BEGIN
+{
+ printf("%-12s %-7s %-16s %-6s %7s\n", "TIME(ms)", "DISK", "COMM", "PID", "LAT(ms)");
+}
+
+kprobe:blk_account_io_start,
+kprobe:__blk_account_io_start
+{
+ @start[arg0] = nsecs;
+ @iopid[arg0] = pid;
+ @iocomm[arg0] = comm;
+ @disk[arg0] = ((struct request *)arg0)->rq_disk->disk_name;
+}
+
+kprobe:blk_account_io_done,
+kprobe:__blk_account_io_done
+/@start[arg0] != 0 && @iopid[arg0] != 0 && @iocomm[arg0] != ""/
+
+{
+ $now = nsecs;
+ printf("%-12u %-7s %-16s %-6d %7d\n",
+ elapsed / 1e6, @disk[arg0], @iocomm[arg0], @iopid[arg0],
+ ($now - @start[arg0]) / 1e6);
+
+ delete(@start[arg0]);
+ delete(@iopid[arg0]);
+ delete(@iocomm[arg0]);
+ delete(@disk[arg0]);
+}
+
+END
+{
+ clear(@start);
+ clear(@iopid);
+ clear(@iocomm);
+ clear(@disk);
+}
--
2.35.3

129
SOURCES/bpftrace-0.13.1-orc-Fix-build-with-clang-13.patch
View File

@ -1,129 +0,0 @@
From f562f8fae4bdb8ac51fc815b725bfaada2371b31 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Sat, 4 Sep 2021 17:28:17 -0700
Subject: [PATCH 3/6] orc: Fix build with clang >= 13
Fixes errors like
src/ast/bpforc/bpforcv2.cpp:3:9: error: constructor for 'bpftrace::BpfOrc' must explicitly initialize the member 'ES' which does not have a default constructor
BpfOrc::BpfOrc(TargetMachine *TM, DataLayout DL)
^
Fixes https://github.com/iovisor/bpftrace/issues/1963
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
src/bpforc.h | 23 ++++++++++++++++++++++-
src/bpforcv2.cpp | 23 +++++++++++++++--------
2 files changed, 37 insertions(+), 9 deletions(-)
diff --git a/src/bpforc.h b/src/bpforc.h
index c333a651..cc6a1c97 100644
--- a/src/bpforc.h
+++ b/src/bpforc.h
@@ -20,6 +20,9 @@
#ifdef LLVM_ORC_V2
#include <llvm/ExecutionEngine/Orc/Core.h>
#include <llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h>
+#if LLVM_VERSION_MAJOR >= 13
+#include <llvm/ExecutionEngine/Orc/ExecutorProcessControl.h>
+#endif
#endif
#include <optional>
@@ -71,8 +74,12 @@ class BpfOrc
std::unique_ptr<TargetMachine> TM;
DataLayout DL;
#if LLVM_VERSION_MAJOR >= 7
+#ifdef LLVM_ORC_V2
+ std::unique_ptr<ExecutionSession> ES;
+#else // LLVM_ORC_V1
ExecutionSession ES;
#endif
+#endif
#if LLVM_VERSION_MAJOR >= 7 && LLVM_VERSION_MAJOR < 12
std::shared_ptr<SymbolResolver> Resolver;
#endif
@@ -97,7 +104,21 @@ class BpfOrc
#endif
public:
+#if LLVM_VERSION_MAJOR >= 13
+ ~BpfOrc()
+ {
+ if (auto Err = ES->endSession())
+ ES->reportError(std::move(Err));
+ }
+#endif
+#ifdef LLVM_ORC_V2
+ BpfOrc(TargetMachine *TM,
+ DataLayout DL,
+ std::unique_ptr<ExecutionSession> ES);
+#else
BpfOrc(TargetMachine *TM, DataLayout DL);
+#endif
+
void compile(std::unique_ptr<Module> M);
/* Helper for creating a orc object, responsible for creating internal objects
@@ -130,7 +151,7 @@ class BpfOrc
#ifdef LLVM_ORC_V2
Expected<JITEvaluatedSymbol> lookup(StringRef Name)
{
- return ES.lookup({ &MainJD }, Mangle(Name.str()));
+ return ES->lookup({ &MainJD }, Mangle(Name.str()));
}
#endif
};
diff --git a/src/bpforcv2.cpp b/src/bpforcv2.cpp
index 9876625b..3e6684e4 100644
--- a/src/bpforcv2.cpp
+++ b/src/bpforcv2.cpp
@@ -1,21 +1,23 @@
// Included by bpforc.cpp
-BpfOrc::BpfOrc(TargetMachine *TM, DataLayout DL)
+BpfOrc::BpfOrc(TargetMachine *TM,
+ DataLayout DL,
+ std::unique_ptr<ExecutionSession> ES)
: TM(std::move(TM)),
DL(std::move(DL)),
- ObjectLayer(ES,
+ ES(std::move(ES)),
+ ObjectLayer(*(this->ES),
[this]() {
return std::make_unique<MemoryManager>(sections_);
}),
- CompileLayer(ES,
+ CompileLayer(*this->ES,
ObjectLayer,
std::make_unique<SimpleCompiler>(*this->TM)),
- Mangle(ES, this->DL),
+ Mangle(*this->ES, this->DL),
CTX(std::make_unique<LLVMContext>()),
- MainJD(cantFail(ES.createJITDylib("<main>")))
+ MainJD(cantFail(this->ES->createJITDylib("<main>")))
{
}
-
LLVMContext &BpfOrc::getContext()
{
return *CTX.getContext();
@@ -34,8 +36,13 @@ std::unique_ptr<BpfOrc> BpfOrc::Create()
// return unique_ptrs
auto DL = cantFail(JTMB.getDefaultDataLayoutForTarget());
auto TM = cantFail(JTMB.createTargetMachine());
-
- return std::make_unique<BpfOrc>(TM.release(), std::move(DL));
+#if LLVM_VERSION_MAJOR >= 13
+ auto EPC = SelfExecutorProcessControl::Create();
+ auto ES = std::make_unique<ExecutionSession>(std::move(*EPC));
+#else
+ auto ES = std::make_unique<ExecutionSession>();
+#endif
+ return std::make_unique<BpfOrc>(TM.release(), std::move(DL), std::move(ES));
}
void BpfOrc::compile(std::unique_ptr<Module> M)
--
2.35.3

285
SOURCES/bpftrace-0.13.1-tools-Make-tools-rely-on-BTF-instead-of-header-files.patch
View File

@ -1,285 +0,0 @@
From 9c9ac55573ac33abbbbad256eda08dafba18bf9f Mon Sep 17 00:00:00 2001
From: Jerome Marchand <jmarchan@redhat.com>
Date: Thu, 29 Apr 2021 12:03:28 +0200
Subject: [PATCH 9/9] tools: Make tools rely on BTF instead of header files.
Many distribution already ship BTF and this is more robust that
parsing header files.
Fixes #1820
---
docs/reference_guide.md | 3 ++-
src/clang_parser.cpp | 4 ++++
tools/biosnoop.bt | 5 ++++-
tools/dcsnoop.bt | 2 ++
tools/mdflush.bt | 2 ++
tools/naptime.bt | 2 ++
tools/oomkill.bt | 2 ++
tools/runqlen.bt | 6 ++++--
tools/tcpaccept.bt | 4 ++++
tools/tcpconnect.bt | 4 ++++
tools/tcpdrop.bt | 4 ++++
tools/tcplife.bt | 4 ++++
tools/tcpretrans.bt | 4 ++++
tools/tcpsynbl.bt | 2 ++
14 files changed, 44 insertions(+), 4 deletions(-)
diff --git a/docs/reference_guide.md b/docs/reference_guide.md
index 69a8ed22..11a685de 100644
--- a/docs/reference_guide.md
+++ b/docs/reference_guide.md
@@ -3455,7 +3455,8 @@ Attaching 1 probe...
# BTF Support
If kernel has BTF, kernel types are automatically available and there is no need to include additional headers
-to use them.
+to use them. To allow users to detect this situation in scripts, the preprocessor macro `BPFTRACE_HAVE_BTF`
+is defined if BTF is detected. See tools/ for examples of its usage.
Requirements for using BTF:
diff --git a/src/clang_parser.cpp b/src/clang_parser.cpp
index 20269a71..7fb39949 100644
--- a/src/clang_parser.cpp
+++ b/src/clang_parser.cpp
@@ -747,6 +747,9 @@ bool ClangParser::parse(ast::Program *program, BPFtrace &bpftrace, std::vector<s
// Since we're omitting <linux/types.h> there's no reason to
// add the wokarounds for it
args.push_back("-D__CLANG_WORKAROUNDS_H");
+ // Let script know we have BTF -- this is useful for prewritten tools to
+ // conditionally include headers if BTF isn't available.
+ args.push_back("-DBPFTRACE_HAVE_BTF");
if (handler.parse_file("definitions.h", input, args, input_files, false) &&
handler.has_redefinition_error())
@@ -779,6 +782,7 @@ bool ClangParser::parse(ast::Program *program, BPFtrace &bpftrace, std::vector<s
// taken from BTF. We cannot use BTF in such a case.
args.pop_back();
args.pop_back();
+ args.pop_back();
input_files.back() = get_empty_btf_generated_header();
}
diff --git a/tools/biosnoop.bt b/tools/biosnoop.bt
index aa88f4ba..33ad75de 100755
--- a/tools/biosnoop.bt
+++ b/tools/biosnoop.bt
@@ -1,5 +1,4 @@
#!/usr/bin/env bpftrace
-#include <linux/blkdev.h>
/*
* biosnoop.bt Block I/O tracing tool, showing per I/O latency.
* For Linux, uses bpftrace, eBPF.
@@ -11,6 +10,10 @@
* 15-Nov-2017 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
+#include <linux/blkdev.h>
+#endif
+
BEGIN
{
printf("%-12s %-7s %-16s %-6s %7s\n", "TIME(ms)", "DISK", "COMM", "PID", "LAT(ms)");
diff --git a/tools/dcsnoop.bt b/tools/dcsnoop.bt
index 183f0fb5..e85ab1aa 100755
--- a/tools/dcsnoop.bt
+++ b/tools/dcsnoop.bt
@@ -15,6 +15,7 @@
* 08-Sep-2018 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/fs.h>
#include <linux/sched.h>
@@ -24,6 +25,7 @@ struct nameidata {
struct qstr last;
// [...]
};
+#endif
BEGIN
{
diff --git a/tools/mdflush.bt b/tools/mdflush.bt
index 541abba1..1db547f6 100755
--- a/tools/mdflush.bt
+++ b/tools/mdflush.bt
@@ -13,8 +13,10 @@
* 08-Sep-2018 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/genhd.h>
#include <linux/bio.h>
+#endif
BEGIN
{
diff --git a/tools/naptime.bt b/tools/naptime.bt
index eb96b677..a84652a3 100755
--- a/tools/naptime.bt
+++ b/tools/naptime.bt
@@ -13,8 +13,10 @@
* 16-Feb-2019 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/time.h>
#include <linux/sched.h>
+#endif
BEGIN
{
diff --git a/tools/oomkill.bt b/tools/oomkill.bt
index 6126682d..1c9b16a3 100755
--- a/tools/oomkill.bt
+++ b/tools/oomkill.bt
@@ -20,7 +20,9 @@
* 07-Sep-2018 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/oom.h>
+#endif
BEGIN
{
diff --git a/tools/runqlen.bt b/tools/runqlen.bt
index 02d82d74..1be42adc 100755
--- a/tools/runqlen.bt
+++ b/tools/runqlen.bt
@@ -11,17 +11,19 @@
* 07-Oct-2018 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/sched.h>
// Until BTF is available, we'll need to declare some of this struct manually,
// since it isn't available to be #included. This will need maintenance to match
// your kernel version. It is from kernel/sched/sched.h:
-struct cfs_rq_partial {
+struct cfs_rq {
struct load_weight load;
unsigned long runnable_weight;
unsigned int nr_running;
unsigned int h_nr_running;
};
+#endif
BEGIN
{
@@ -31,7 +33,7 @@ BEGIN
profile:hz:99
{
$task = (struct task_struct *)curtask;
- $my_q = (struct cfs_rq_partial *)$task->se.cfs_rq;
+ $my_q = (struct cfs_rq *)$task->se.cfs_rq;
$len = $my_q->nr_running;
$len = $len > 0 ? $len - 1 : 0; // subtract currently running task
@runqlen = lhist($len, 0, 100, 1);
diff --git a/tools/tcpaccept.bt b/tools/tcpaccept.bt
index b40a041b..2f4dfe1f 100755
--- a/tools/tcpaccept.bt
+++ b/tools/tcpaccept.bt
@@ -16,8 +16,12 @@
* 23-Nov-2018 Dale Hamel created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/socket.h>
#include <net/sock.h>
+#else
+#include <sys/socket.h>
+#endif
BEGIN
{
diff --git a/tools/tcpconnect.bt b/tools/tcpconnect.bt
index 4ae30d65..05c3ca0e 100755
--- a/tools/tcpconnect.bt
+++ b/tools/tcpconnect.bt
@@ -19,8 +19,12 @@
* 23-Nov-2018 Dale Hamel created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/socket.h>
#include <net/sock.h>
+#else
+#include <sys/socket.h>
+#endif
BEGIN
{
diff --git a/tools/tcpdrop.bt b/tools/tcpdrop.bt
index 79a86b08..2de3e507 100755
--- a/tools/tcpdrop.bt
+++ b/tools/tcpdrop.bt
@@ -17,8 +17,12 @@
* 23-Nov-2018 Dale Hamel created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/socket.h>
#include <net/sock.h>
+#else
+#include <sys/socket.h>
+#endif
BEGIN
{
diff --git a/tools/tcplife.bt b/tools/tcplife.bt
index 9c0d8814..a9a054bf 100755
--- a/tools/tcplife.bt
+++ b/tools/tcplife.bt
@@ -13,10 +13,14 @@
* 17-Apr-2019 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <net/tcp_states.h>
#include <net/sock.h>
#include <linux/socket.h>
#include <linux/tcp.h>
+#else
+#include <sys/socket.h>
+#endif
BEGIN
{
diff --git a/tools/tcpretrans.bt b/tools/tcpretrans.bt
index 8b9500c0..777d78fa 100755
--- a/tools/tcpretrans.bt
+++ b/tools/tcpretrans.bt
@@ -17,8 +17,12 @@
* 23-Nov-2018 Dale Hamel created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <linux/socket.h>
#include <net/sock.h>
+#else
+#include <sys/socket.h>
+#endif
BEGIN
{
diff --git a/tools/tcpsynbl.bt b/tools/tcpsynbl.bt
index 4b3c99c3..0570f29c 100755
--- a/tools/tcpsynbl.bt
+++ b/tools/tcpsynbl.bt
@@ -13,7 +13,9 @@
* 19-Apr-2019 Brendan Gregg Created this.
*/
+#ifndef BPFTRACE_HAVE_BTF
#include <net/sock.h>
+#endif
BEGIN
{
--
2.35.3

457
SOURCES/bpftrace-0.16.0-IR-builder-get-rid-of-getPointerElementType-calls.patch Normal file
View File

@ -0,0 +1,457 @@
From 7afe3ced2b91d940a8d72755043ac2468687f1ee Mon Sep 17 00:00:00 2001
From: Viktor Malik <viktor.malik@gmail.com>
Date: Mon, 10 Oct 2022 14:26:38 +0200
Subject: [PATCH] IR builder: get rid of getPointerElementType calls
Usage of Value::getPointerElementType is deprecated and will be dropped
in LLVM 16 [1].
There are several places where we use this method:
- function (value) calls - the called function type is usually
available, so just pass it to createCall, the only exception is
CreateProbeReadStr which must have been refactored
- getting the type of alloca instruction - there is a dedicated
AllocaInst::getAllocatedType method that can be used instead
- strncmp - pass sizes of the strings to CreateStrncmp to be able to get
the correct string type (which is array of uint8)
[1] https://llvm.org/docs/OpaquePointers.html
---
src/ast/irbuilderbpf.cpp | 143 ++++++++++++--------------------
src/ast/irbuilderbpf.h | 23 +++--
src/ast/passes/codegen_llvm.cpp | 30 +++++--
3 files changed, 86 insertions(+), 110 deletions(-)
diff --git a/src/ast/irbuilderbpf.cpp b/src/ast/irbuilderbpf.cpp
index d49883f7..4036b2df 100644
--- a/src/ast/irbuilderbpf.cpp
+++ b/src/ast/irbuilderbpf.cpp
@@ -288,17 +288,16 @@ CallInst *IRBuilderBPF::CreateHelperCall(libbpf::bpf_func_id func_id,
Constant *helper_func = ConstantExpr::getCast(Instruction::IntToPtr,
getInt64(func_id),
helper_ptr_type);
- return createCall(helper_func, args, Name);
+ return createCall(helper_type, helper_func, args, Name);
}
-CallInst *IRBuilderBPF::createCall(Value *callee,
+CallInst *IRBuilderBPF::createCall(FunctionType *callee_type,
+ Value *callee,
ArrayRef<Value *> args,
const Twine &Name)
{
#if LLVM_VERSION_MAJOR >= 11
- auto *calleePtrType = cast<PointerType>(callee->getType());
- auto *calleeType = cast<FunctionType>(calleePtrType->getPointerElementType());
- return CreateCall(calleeType, callee, args, Name);
+ return CreateCall(callee_type, callee, args, Name);
#else
return CreateCall(callee, args, Name);
#endif
@@ -307,7 +306,7 @@ CallInst *IRBuilderBPF::createCall(Value *callee,
CallInst *IRBuilderBPF::CreateBpfPseudoCallId(int mapid)
{
Function *pseudo_func = module_.getFunction("llvm.bpf.pseudo");
- return createCall(pseudo_func,
+ return CreateCall(pseudo_func,
{ getInt64(BPF_PSEUDO_MAP_FD), getInt64(mapid) },
"pseudo");
}
@@ -346,7 +345,8 @@ CallInst *IRBuilderBPF::createMapLookup(int mapid, Value *key)
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_map_lookup_elem),
lookup_func_ptr_type);
- return createCall(lookup_func, { map_ptr, key }, "lookup_elem");
+ return createCall(
+ lookup_func_type, lookup_func, { map_ptr, key }, "lookup_elem");
}
CallInst *IRBuilderBPF::CreateGetJoinMap(Value *ctx, const location &loc)
@@ -397,8 +397,7 @@ Value *IRBuilderBPF::CreateMapLookupElem(Value *ctx,
CREATE_MEMCPY(value, call, type.GetSize(), 1);
else
{
- assert(value->getType()->isPointerTy() &&
- (value->getType()->getPointerElementType() == getInt64Ty()));
+ assert(value->getAllocatedType() == getInt64Ty());
// createMapLookup returns an u8*
auto *cast = CreatePointerCast(call, value->getType(), "cast");
CreateStore(CreateLoad(getInt64Ty(), cast), value);
@@ -448,7 +447,8 @@ void IRBuilderBPF::CreateMapUpdateElem(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_map_update_elem),
update_func_ptr_type);
- CallInst *call = createCall(update_func,
+ CallInst *call = createCall(update_func_type,
+ update_func,
{ map_ptr, key, val, flags },
"update_elem");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_map_update_elem, loc);
@@ -472,7 +472,8 @@ void IRBuilderBPF::CreateMapDeleteElem(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_map_delete_elem),
delete_func_ptr_type);
- CallInst *call = createCall(delete_func, { map_ptr, key }, "delete_elem");
+ CallInst *call = createCall(
+ delete_func_type, delete_func, { map_ptr, key }, "delete_elem");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_map_delete_elem, loc);
}
@@ -508,72 +509,53 @@ void IRBuilderBPF::CreateProbeRead(Value *ctx,
Constant *proberead_func = ConstantExpr::getCast(Instruction::IntToPtr,
getInt64(read_fn),
proberead_func_ptr_type);
- CallInst *call = createCall(proberead_func,
+ CallInst *call = createCall(proberead_func_type,
+ proberead_func,
{ dst, size, src },
probeReadHelperName(read_fn));
CreateHelperErrorCond(ctx, call, read_fn, loc);
}
-Constant *IRBuilderBPF::createProbeReadStrFn(llvm::Type *dst,
- llvm::Type *src,
- AddrSpace as)
-{
- assert(src && (src->isIntegerTy() || src->isPointerTy()));
- // int bpf_probe_read_str(void *dst, int size, const void *unsafe_ptr)
- FunctionType *probereadstr_func_type = FunctionType::get(
- getInt64Ty(), { dst, getInt32Ty(), src }, false);
- PointerType *probereadstr_func_ptr_type = PointerType::get(
- probereadstr_func_type, 0);
- return ConstantExpr::getCast(Instruction::IntToPtr,
- getInt64(selectProbeReadHelper(as, true)),
- probereadstr_func_ptr_type);
-}
-
CallInst *IRBuilderBPF::CreateProbeReadStr(Value *ctx,
- AllocaInst *dst,
+ Value *dst,
size_t size,
Value *src,
AddrSpace as,
const location &loc)
{
- assert(ctx && ctx->getType() == getInt8PtrTy());
return CreateProbeReadStr(ctx, dst, getInt32(size), src, as, loc);
}
CallInst *IRBuilderBPF::CreateProbeReadStr(Value *ctx,
Value *dst,
- size_t size,
- Value *src,
- AddrSpace as,
- const location &loc)
-{
- assert(ctx && ctx->getType() == getInt8PtrTy());
- Constant *fn = createProbeReadStrFn(dst->getType(), src->getType(), as);
- auto read_fn = selectProbeReadHelper(as, true);
- CallInst *call = createCall(fn,
- { dst, getInt32(size), src },
- probeReadHelperName(read_fn));
- CreateHelperErrorCond(ctx, call, read_fn, loc);
- return call;
-}
-
-CallInst *IRBuilderBPF::CreateProbeReadStr(Value *ctx,
- AllocaInst *dst,
llvm::Value *size,
Value *src,
AddrSpace as,
const location &loc)
{
assert(ctx && ctx->getType() == getInt8PtrTy());
- assert(dst && dst->getAllocatedType()->isArrayTy() &&
- dst->getAllocatedType()->getArrayElementType() == getInt8Ty());
assert(size && size->getType()->isIntegerTy());
+ if (auto *dst_alloca = dyn_cast<AllocaInst>(dst))
+ {
+ assert(dst_alloca->getAllocatedType()->isArrayTy() &&
+ dst_alloca->getAllocatedType()->getArrayElementType() ==
+ getInt8Ty());
+ }
- auto *size_i32 = CreateIntCast(size, getInt32Ty(), false);
+ auto *size_i32 = size;
+ if (size_i32->getType()->getScalarSizeInBits() != 32)
+ size_i32 = CreateIntCast(size_i32, getInt32Ty(), false);
- Constant *fn = createProbeReadStrFn(dst->getType(), src->getType(), as);
auto read_fn = selectProbeReadHelper(as, true);
- CallInst *call = createCall(fn,
+ // int bpf_probe_read_str(void *dst, int size, const void *unsafe_ptr)
+ FunctionType *probereadstr_func_type = FunctionType::get(
+ getInt64Ty(), { dst->getType(), getInt32Ty(), src->getType() }, false);
+ PointerType *probereadstr_func_ptr_type = PointerType::get(
+ probereadstr_func_type, 0);
+ Constant *probereadstr_callee = ConstantExpr::getCast(
+ Instruction::IntToPtr, getInt64(read_fn), probereadstr_func_ptr_type);
+ CallInst *call = createCall(probereadstr_func_type,
+ probereadstr_callee,
{ dst, size_i32, src },
probeReadHelperName(read_fn));
CreateHelperErrorCond(ctx, call, read_fn, loc);
@@ -732,8 +714,10 @@ Value *IRBuilderBPF::CreateUSDTReadArgument(Value *ctx,
return result;
}
-Value *IRBuilderBPF::CreateStrncmp(Value *val1,
- Value *val2,
+Value *IRBuilderBPF::CreateStrncmp(Value *str1,
+ uint64_t str1_size,
+ Value *str2,
+ uint64_t str2_size,
uint64_t n,
bool inverse)
{
@@ -762,40 +746,21 @@ Value *IRBuilderBPF::CreateStrncmp(Value *val1,
// Check if the compared strings are literals.
// If so, we can avoid storing the literal in memory.
std::optional<std::string> literal1;
- if (auto constString1 = dyn_cast<ConstantDataArray>(val1))
+ if (auto constString1 = dyn_cast<ConstantDataArray>(str1))
literal1 = constString1->getAsString();
- else if (isa<ConstantAggregateZero>(val1))
+ else if (isa<ConstantAggregateZero>(str1))
literal1 = "";
else
literal1 = std::nullopt;
std::optional<std::string> literal2;
- if (auto constString2 = dyn_cast<ConstantDataArray>(val2))
+ if (auto constString2 = dyn_cast<ConstantDataArray>(str2))
literal2 = constString2->getAsString();
- else if (isa<ConstantAggregateZero>(val2))
+ else if (isa<ConstantAggregateZero>(str2))
literal2 = "";
else
literal2 = std::nullopt;
- auto *val1p = dyn_cast<PointerType>(val1->getType());
- auto *val2p = dyn_cast<PointerType>(val2->getType());
-#ifndef NDEBUG
- if (!literal1)
- {
- assert(val1p);
- assert(val1p->getPointerElementType()->isArrayTy() &&
- val1p->getPointerElementType()->getArrayElementType() ==
- getInt8Ty());
- }
- if (!literal2)
- {
- assert(val2p);
- assert(val2p->getPointerElementType()->isArrayTy() &&
- val2p->getPointerElementType()->getArrayElementType() ==
- getInt8Ty());
- }
-#endif
-
Function *parent = GetInsertBlock()->getParent();
AllocaInst *store = CreateAllocaBPF(getInt1Ty(), "strcmp.result");
BasicBlock *str_ne = BasicBlock::Create(module_.getContext(),
@@ -822,8 +787,8 @@ Value *IRBuilderBPF::CreateStrncmp(Value *val1,
l = getInt8(literal1->c_str()[i]);
else
{
- auto *ptr_l = CreateGEP(val1p->getPointerElementType(),
- val1,
+ auto *ptr_l = CreateGEP(ArrayType::get(getInt8Ty(), str1_size),
+ str1,
{ getInt32(0), getInt32(i) });
l = CreateLoad(getInt8Ty(), ptr_l);
}
@@ -833,8 +798,8 @@ Value *IRBuilderBPF::CreateStrncmp(Value *val1,
r = getInt8(literal2->c_str()[i]);
else
{
- auto *ptr_r = CreateGEP(val2p->getPointerElementType(),
- val2,
+ auto *ptr_r = CreateGEP(ArrayType::get(getInt8Ty(), str2_size),
+ str2,
{ getInt32(0), getInt32(i) });
r = CreateLoad(getInt8Ty(), ptr_r);
}
@@ -994,11 +959,9 @@ void IRBuilderBPF::CreateGetCurrentComm(Value *ctx,
size_t size,
const location &loc)
{
- assert(buf->getType()->getPointerElementType()->isArrayTy() &&
- buf->getType()->getPointerElementType()->getArrayNumElements() >=
- size &&
- buf->getType()->getPointerElementType()->getArrayElementType() ==
- getInt8Ty());
+ assert(buf->getAllocatedType()->isArrayTy() &&
+ buf->getAllocatedType()->getArrayNumElements() >= size &&
+ buf->getAllocatedType()->getArrayElementType() == getInt8Ty());
// long bpf_get_current_comm(char *buf, int size_of_buf)
// Return: 0 on success or negative error
@@ -1077,7 +1040,7 @@ void IRBuilderBPF::CreateSignal(Value *ctx, Value *sig, const location &loc)
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_send_signal),
signal_func_ptr_type);
- CallInst *call = createCall(signal_func, { sig }, "signal");
+ CallInst *call = createCall(signal_func_type, signal_func, { sig }, "signal");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_send_signal, loc);
}
@@ -1091,7 +1054,7 @@ void IRBuilderBPF::CreateOverrideReturn(Value *ctx, Value *rc)
Constant *override_func = ConstantExpr::getCast(Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_override_return),
override_func_ptr_type);
- createCall(override_func, { ctx, rc }, "override");
+ createCall(override_func_type, override_func, { ctx, rc }, "override");
}
CallInst *IRBuilderBPF::CreateSkbOutput(Value *skb,
@@ -1126,7 +1089,8 @@ CallInst *IRBuilderBPF::CreateSkbOutput(Value *skb,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_skb_output),
skb_output_func_ptr_type);
- CallInst *call = createCall(skb_output_func,
+ CallInst *call = createCall(skb_output_func_type,
+ skb_output_func,
{ skb, map_ptr, flags, data, size_val },
"skb_output");
return call;
@@ -1320,7 +1284,8 @@ void IRBuilderBPF::CreateSeqPrintf(Value *ctx,
CreateGEP(getInt64Ty(), meta, getInt64(0)),
"seq");
- CallInst *call = createCall(seq_printf_func,
+ CallInst *call = createCall(seq_printf_func_type,
+ seq_printf_func,
{ seq, fmt, fmt_size, data, data_len },
"seq_printf");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_seq_printf, loc);
diff --git a/src/ast/irbuilderbpf.h b/src/ast/irbuilderbpf.h
index e124911b..c9ffb545 100644
--- a/src/ast/irbuilderbpf.h
+++ b/src/ast/irbuilderbpf.h
@@ -90,17 +90,11 @@ public:
AddrSpace as,
const location &loc);
CallInst *CreateProbeReadStr(Value *ctx,
- AllocaInst *dst,
+ Value *dst,
llvm::Value *size,
Value *src,
AddrSpace as,
const location &loc);
- CallInst *CreateProbeReadStr(Value *ctx,
- AllocaInst *dst,
- size_t size,
- Value *src,
- AddrSpace as,
- const location &loc);
CallInst *CreateProbeReadStr(Value *ctx,
Value *dst,
size_t size,
@@ -115,7 +109,12 @@ public:
pid_t pid,
AddrSpace as,
const location &loc);
- Value *CreateStrncmp(Value *val1, Value *val2, uint64_t n, bool inverse);
+ Value *CreateStrncmp(Value *str1,
+ uint64_t str1_size,
+ Value *str2,
+ uint64_t str2_size,
+ uint64_t n,
+ bool inverse);
CallInst *CreateGetNs(bool boot_time, const location &loc);
CallInst *CreateGetPidTgid(const location &loc);
CallInst *CreateGetCurrentCgroupId(const location &loc);
@@ -131,7 +130,10 @@ public:
ArrayRef<Value *> args,
const Twine &Name,
const location *loc = nullptr);
- CallInst *createCall(Value *callee, ArrayRef<Value *> args, const Twine &Name);
+ CallInst *createCall(FunctionType *callee_type,
+ Value *callee,
+ ArrayRef<Value *> args,
+ const Twine &Name);
void CreateGetCurrentComm(Value *ctx, AllocaInst *buf, size_t size, const location& loc);
void CreatePerfEventOutput(Value *ctx,
Value *data,
@@ -185,9 +187,6 @@ private:
AddrSpace as,
const location &loc);
CallInst *createMapLookup(int mapid, Value *key);
- Constant *createProbeReadStrFn(llvm::Type *dst,
- llvm::Type *src,
- AddrSpace as);
libbpf::bpf_func_id selectProbeReadHelper(AddrSpace as, bool str);
std::map<std::string, StructType *> structs_;
diff --git a/src/ast/passes/codegen_llvm.cpp b/src/ast/passes/codegen_llvm.cpp
index a818ca0b..2b888087 100644
--- a/src/ast/passes/codegen_llvm.cpp
+++ b/src/ast/passes/codegen_llvm.cpp
@@ -1133,8 +1133,12 @@ void CodegenLLVM::visit(Call &call)
auto left_string = getString(left_arg);
auto right_string = getString(right_arg);
- expr_ = b_.CreateStrncmp(
- left_string.first, right_string.first, size, false);
+ expr_ = b_.CreateStrncmp(left_string.first,
+ left_string.second,
+ right_string.first,
+ right_string.second,
+ size,
+ false);
}
else if (call.func == "override")
{
@@ -1269,8 +1273,7 @@ void CodegenLLVM::visit(Variable &var)
else
{
auto *var_alloca = variables_[var.ident];
- expr_ = b_.CreateLoad(var_alloca->getType()->getPointerElementType(),
- var_alloca);
+ expr_ = b_.CreateLoad(var_alloca->getAllocatedType(), var_alloca);
}
}
@@ -1310,7 +1313,12 @@ void CodegenLLVM::binop_string(Binop &binop)
auto right_string = getString(binop.right);
size_t len = std::min(left_string.second, right_string.second);
- expr_ = b_.CreateStrncmp(left_string.first, right_string.first, len, inverse);
+ expr_ = b_.CreateStrncmp(left_string.first,
+ left_string.second,
+ right_string.first,
+ right_string.second,
+ len,
+ inverse);
}
void CodegenLLVM::binop_buf(Binop &binop)
@@ -1334,7 +1342,12 @@ void CodegenLLVM::binop_buf(Binop &binop)
size_t len = std::min(binop.left->type.GetSize(),
binop.right->type.GetSize());
- expr_ = b_.CreateStrncmp(left_string, right_string, len, inverse);
+ expr_ = b_.CreateStrncmp(left_string,
+ binop.left->type.GetSize(),
+ right_string,
+ binop.right->type.GetSize(),
+ len,
+ inverse);
}
void CodegenLLVM::binop_int(Binop &binop)
@@ -3528,9 +3541,8 @@ void CodegenLLVM::createIncDec(Unop &unop)
else if (unop.expr->is_variable)
{
Variable &var = static_cast<Variable &>(*unop.expr);
- Value *oldval = b_.CreateLoad(
- variables_[var.ident]->getType()->getPointerElementType(),
- variables_[var.ident]);
+ Value *oldval = b_.CreateLoad(variables_[var.ident]->getAllocatedType(),
+ variables_[var.ident]);
Value *newval;
if (is_increment)
newval = b_.CreateAdd(oldval, b_.GetIntSameSize(step, oldval));
--
2.38.1

0
SOURCES/bpftrace-0.13.1-RHEL-aarch64-fixes-statsnoop-and-opensnoop.patch → SOURCES/bpftrace-0.16.0-RHEL-aarch64-fixes-statsnoop-and-opensnoop.patch
View File

174
SOURCES/bpftrace-0.16.0-tcpdrop-Fix-ERROR-Error-attaching-probe-kprobe-tcp_d.patch Normal file
View File

@ -0,0 +1,174 @@
From 652562eef0d53649cf29c256bc20abdffdd195ab Mon Sep 17 00:00:00 2001
From: Rong Tao <rongtao@cestc.cn>
Date: Sat, 1 Oct 2022 16:15:27 +0800
Subject: [PATCH 1/2] tcpdrop: Fix: ERROR: Error attaching probe:
'kprobe:tcp_drop'
kernel commit 8fbf195798b5('tcp_drop() is no longer needed.') remove
the kprobe:tcp_drop, bcc commit 16eab39171eb('Add
tracepoint:skb:kfree_skb if no tcp_drop() kprobe.') already fix this
problem.
CI old kernel is too old and not support the 'reason' field, move the
old tools/tcpdrop.bt into tools/old/tcpdrop.bt and set the CI to use
it.
Since 5.17 support trace_kfree_skb(skb, ..., reason) 'reason' field.
Since 5.19 remove tcp_drop() function.
ERROR log:
$ sudo ./tcpdrop.bt
./tcpdrop.bt:49-51: WARNING: tcp_drop is not traceable (either non-existing, inlined, or marked as "notrace"); attaching to it will likely fail
Attaching 3 probes...
cannot attach kprobe, probe entry may not exist
ERROR: Error attaching probe: 'kprobe:tcp_drop'
Link: https://github.com/iovisor/bpftrace/pull/2379
Signed-off-by: Rong Tao <rongtao@cestc.cn>
---
tools/old/tcpdrop.bt | 85 ++++++++++++++++++++++++++++++++++++++++++++
tools/tcpdrop.bt | 22 ++++++------
2 files changed, 97 insertions(+), 10 deletions(-)
create mode 100755 tools/old/tcpdrop.bt
diff --git a/tools/old/tcpdrop.bt b/tools/old/tcpdrop.bt
new file mode 100755
index 00000000..685a5f6a
--- /dev/null
+++ b/tools/old/tcpdrop.bt
@@ -0,0 +1,85 @@
+#!/usr/bin/env bpftrace
+/*
+ * tcpdrop.bt Trace TCP kernel-dropped packets/segments.
+ * For Linux, uses bpftrace and eBPF.
+ *
+ * USAGE: tcpdrop.bt
+ *
+ * This is a bpftrace version of the bcc tool of the same name.
+ * It is limited to ipv4 addresses, and cannot show tcp flags.
+ *
+ * This provides information such as packet details, socket state, and kernel
+ * stack trace for packets/segments that were dropped via tcp_drop().
+
+ * WARNING: this script attaches to the tcp_drop kprobe which is likely inlined
+ * on newer kernels and not replaced by anything else, therefore
+ * the script will stop working
+ *
+ * For Linux <= 5.18.
+ *
+ * Copyright (c) 2018 Dale Hamel.
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ *
+ * 23-Nov-2018 Dale Hamel created this.
+ */
+
+#ifndef BPFTRACE_HAVE_BTF
+#include <linux/socket.h>
+#include <net/sock.h>
+#else
+#include <sys/socket.h>
+#endif
+
+BEGIN
+{
+ printf("Tracing tcp drops. Hit Ctrl-C to end.\n");
+ printf("%-8s %-8s %-16s %-21s %-21s %-8s\n", "TIME", "PID", "COMM", "SADDR:SPORT", "DADDR:DPORT", "STATE");
+
+ // See https://github.com/torvalds/linux/blob/master/include/net/tcp_states.h
+ @tcp_states[1] = "ESTABLISHED";
+ @tcp_states[2] = "SYN_SENT";
+ @tcp_states[3] = "SYN_RECV";
+ @tcp_states[4] = "FIN_WAIT1";
+ @tcp_states[5] = "FIN_WAIT2";
+ @tcp_states[6] = "TIME_WAIT";
+ @tcp_states[7] = "CLOSE";
+ @tcp_states[8] = "CLOSE_WAIT";
+ @tcp_states[9] = "LAST_ACK";
+ @tcp_states[10] = "LISTEN";
+ @tcp_states[11] = "CLOSING";
+ @tcp_states[12] = "NEW_SYN_RECV";
+}
+
+kprobe:tcp_drop
+{
+ $sk = ((struct sock *) arg0);
+ $inet_family = $sk->__sk_common.skc_family;
+
+ if ($inet_family == AF_INET || $inet_family == AF_INET6) {
+ if ($inet_family == AF_INET) {
+ $daddr = ntop($sk->__sk_common.skc_daddr);
+ $saddr = ntop($sk->__sk_common.skc_rcv_saddr);
+ } else {
+ $daddr = ntop($sk->__sk_common.skc_v6_daddr.in6_u.u6_addr8);
+ $saddr = ntop($sk->__sk_common.skc_v6_rcv_saddr.in6_u.u6_addr8);
+ }
+ $lport = $sk->__sk_common.skc_num;
+ $dport = $sk->__sk_common.skc_dport;
+
+ // Destination port is big endian, it must be flipped
+ $dport = bswap($dport);
+
+ $state = $sk->__sk_common.skc_state;
+ $statestr = @tcp_states[$state];
+
+ time("%H:%M:%S ");
+ printf("%-8d %-16s ", pid, comm);
+ printf("%39s:%-6d %39s:%-6d %-10s\n", $saddr, $lport, $daddr, $dport, $statestr);
+ printf("%s\n", kstack);
+ }
+}
+
+END
+{
+ clear(@tcp_states);
+}
diff --git a/tools/tcpdrop.bt b/tools/tcpdrop.bt
index 3450a533..bb31107f 100755
--- a/tools/tcpdrop.bt
+++ b/tools/tcpdrop.bt
@@ -9,16 +9,15 @@
* It is limited to ipv4 addresses, and cannot show tcp flags.
*
* This provides information such as packet details, socket state, and kernel
- * stack trace for packets/segments that were dropped via tcp_drop().
-
- * WARNING: this script attaches to the tcp_drop kprobe which is likely inlined
- * on newer kernels and not replaced by anything else, therefore
- * the script will stop working
-
+ * stack trace for packets/segments that were dropped via kfree_skb.
+ *
+ * For Linux 5.17+ (see tools/old for script for lower versions).
+ *
* Copyright (c) 2018 Dale Hamel.
* Licensed under the Apache License, Version 2.0 (the "License")
-
+ *
* 23-Nov-2018 Dale Hamel created this.
+ * 01-Oct-2022 Rong Tao use tracepoint:skb:kfree_skb
*/
#ifndef BPFTRACE_HAVE_BTF
@@ -48,12 +47,15 @@ BEGIN
@tcp_states[12] = "NEW_SYN_RECV";
}
-kprobe:tcp_drop
+tracepoint:skb:kfree_skb
{
- $sk = ((struct sock *) arg0);
+ $reason = args->reason;
+ $skb = (struct sk_buff *)args->skbaddr;
+ $sk = ((struct sock *) $skb->sk);
$inet_family = $sk->__sk_common.skc_family;
- if ($inet_family == AF_INET || $inet_family == AF_INET6) {
+ if ($reason > SKB_DROP_REASON_NOT_SPECIFIED &&
+ ($inet_family == AF_INET || $inet_family == AF_INET6)) {
if ($inet_family == AF_INET) {
$daddr = ntop($sk->__sk_common.skc_daddr);
$saddr = ntop($sk->__sk_common.skc_rcv_saddr);
--
2.38.1

44
SPECS/bpftrace.spec
View File

@ -1,20 +1,20 @@
Name: bpftrace
Version: 0.13.1
Release: 1%{?dist}
Version: 0.16.0
Release: 2%{?dist}
Summary: High-level tracing language for Linux eBPF
License: ASL 2.0
%define cereal_version 1.3.2
URL: https://github.com/iovisor/bpftrace
Source0: %{url}/archive/v%{version}/%{name}-%{version}.tar.gz
Patch0: %{name}-%{version}-RHEL-9-fixes.patch
Patch1: %{name}-%{version}-Fix-mdflush.patch
Patch2: %{name}-%{version}-orc-Fix-build-with-clang-13.patch
Patch3: %{name}-%{version}-Update-bio-tools-to-work-on-kernel-5.16.patch
Patch4: %{name}-%{version}-tools-Make-tools-rely-on-BTF-instead-of-header-files.patch
Patch5: %{name}-%{version}-Fix-libbtf-0.6.0-build.patch
Patch6: %{name}-%{version}-Fix-compile-under-llvm14-trunk.patch
Patch7: %{name}-%{version}-Fix-LLVM-13-warnings.patch
Patch8: %{name}-%{version}-biosnoop.bt-handle-Linux-5.17-block-layer-update.patch
# Cereal is a header-only serialization library which is not packaged into
# RHEL9, so we download it manually. This is ok to do as it is only necessary
# for build.
Source1: https://github.com/USCiLab/cereal/archive/v%{cereal_version}/cereal-%{cereal_version}.tar.gz
Patch0: %{name}-%{version}-IR-builder-get-rid-of-getPointerElementType-calls.patch
Patch1: %{name}-%{version}-tcpdrop-Fix-ERROR-Error-attaching-probe-kprobe-tcp_d.patch
Patch10: %{name}-%{version}-RHEL-aarch64-fixes-statsnoop-and-opensnoop.patch
@ -47,7 +47,7 @@ and predecessor tracers such as DTrace and SystemTap
%prep
%autosetup -N
%autosetup -N -a 1
%autopatch -p1 -M 9
%ifarch aarch64
@ -55,6 +55,9 @@ and predecessor tracers such as DTrace and SystemTap
%endif
%build
# Set CPATH so that CMake finds the cereal headers
CPATH=$PWD/cereal-%{cereal_version}/include:$CPATH
export CPATH
%cmake . \
-DCMAKE_BUILD_TYPE=RelWithDebInfo \
-DBUILD_TESTING:BOOL=OFF \
@ -84,11 +87,28 @@ find %{buildroot}%{_datadir}/%{name}/tools -type f -exec \
%dir %{_datadir}/%{name}/tools
%dir %{_datadir}/%{name}/tools/doc
%{_bindir}/%{name}
%{_bindir}/%{name}-aotrt
%{_mandir}/man8/*
%attr(0755,-,-) %{_datadir}/%{name}/tools/*.bt
%{_datadir}/%{name}/tools/doc/*.txt
# Do not include old versions of tools, they do not work on RHEL 9
%exclude %{_datadir}/%{name}/tools/old
%changelog
* Tue Jan 03 2023 Viktor Malik <vmalik@redhat.com> - 0.16.0-2
- Fix missing kprobe attachpoints for bio* tools (s390x, ppc64le)
- Rebuild for libbpf 1.0.0
- Resolves: rhbz#2157829
- Related: rhbz#2157592
* Fri Dec 16 2022 Viktor Malik <vmalik@redhat.com> - 0.16.0-1
- Rebase on bpftrace 0.16.0 (rhbz#2121920)
- Rebuild for LLVM 15 (rhbz#2118995)
- Download the cereal library (not packaged into RHEL9)
- Fixed several tools (rhbz#1975148, rhbz#2088577, rhbz#2128208, rhbz#2073675,
rhbz#2073770)
- Resolve conflicts between bpftrace and bcc manpages (rhbz#2075076)
* Mon May 16 2022 Jerome Marchand <jmarchan@redhat.com> - 0.13.1-1
- Rebase to bpftrace 0.13.1
- Rebuild for LLVM14