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import CS systemtap-5.3-3.el9

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eabdullin 2025-09-15 12:52:21 +00:00
parent 7495b4b165
commit cee91c4e47
6 changed files with 715 additions and 242 deletions
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2
.gitignore vendored
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SOURCES/systemtap-5.2.tar.gz SOURCES/systemtap-5.3.tar.gz

2
.systemtap.metadata
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c4a891e0732378f7ff6131e59aa6e173282a6adb SOURCES/systemtap-5.2.tar.gz 5a3cbaf151ef6d8621ba24fefc1c2304a041d377 SOURCES/systemtap-5.3.tar.gz

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SOURCES/PR32302.patch
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@ -1,223 +0,0 @@
commit 8b87bd584dcadb3713eaf6d0c9b540b4f54124bf
gpg: Signature made Mon 11 Nov 2024 11:48:03 AM EST
gpg: using RSA key D8F2E95271BA794E222FBEE0DB83606EC7DAAB26
gpg: Can't check signature: No public key
Author: Martin Cermak <mcermak@redhat.com>
Date: Mon Nov 11 17:41:53 2024 +0100
PR32302: Emit forward decls within tracepoint_derived_probe_group() too
Forward decls added in commit 069def0ae9184 need to actually be
emitted in 2 locations, roughtly corresponding to where
tracepoint_extra_decls() is used.
It would be ideal to put them directly to tracepoint_extra_decls()
but that gives significantly less recognized tracepoints.
The plan is toreview this again though and try to merge the
tracepoint_forward_decls() body into tracepoint_extra_decls()
if possible.
diff --git a/tapsets.cxx b/tapsets.cxx
index b4ad7e14e..06540cafc 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -11729,6 +11729,89 @@ static bool header_exists(systemtap_session& s, const string& header)
return false;
}
+static vector<string> tracepoint_forward_decls ()
+{
+ vector<string> retval;
+ // Kernel 6.12
+ retval.push_back("enum cachefiles_content;");
+ retval.push_back("enum extent_type;");
+ retval.push_back("struct bch_fs;");
+ retval.push_back("struct bch_move_stats;");
+ retval.push_back("struct bpos;");
+ retval.push_back("struct btree_bkey_cached_common;");
+ retval.push_back("struct btree_insert_entry;");
+ retval.push_back("struct btree_path;");
+ retval.push_back("struct btree_trans;");
+ retval.push_back("struct cachefiles_msg;");
+ retval.push_back("struct cachefiles_open;");
+ retval.push_back("struct cachefiles_read;");
+ retval.push_back("struct cachefiles_volume;");
+ retval.push_back("struct clk_rate_request;");
+ retval.push_back("struct compact_control;");
+ retval.push_back("struct fsi_device;");
+ retval.push_back("struct fsi_msg;");
+ retval.push_back("struct fsi_slave;");
+ retval.push_back("struct fuse_req;");
+ retval.push_back("struct get_locks_fail;");
+ retval.push_back("struct gss_cred;");
+ retval.push_back("struct handshake_req;");
+ retval.push_back("struct i2c_client;");
+ retval.push_back("struct ib_mad_agent_private;");
+ retval.push_back("struct ib_mad_qp_info;");
+ retval.push_back("struct ib_mad_send_wr_private;");
+ retval.push_back("struct ib_smp;");
+ retval.push_back("struct iomap;");
+ retval.push_back("struct iomap_iter;");
+ retval.push_back("struct mctp_sk_key;");
+ retval.push_back("struct mptcp_ext;");
+ retval.push_back("struct mptcp_subflow_context;");
+ retval.push_back("struct nbd_request;");
+ retval.push_back("struct netfs_io_request;");
+ retval.push_back("struct netfs_io_stream;");
+ retval.push_back("struct netfs_io_subrequest;");
+ retval.push_back("struct nfs42_clone_args;");
+ retval.push_back("struct nfs42_copy_args;");
+ retval.push_back("struct nfs42_copy_notify_args;");
+ retval.push_back("struct nfs42_copy_notify_res;");
+ retval.push_back("struct nfs42_copy_res;");
+ retval.push_back("struct nfs42_falloc_args;");
+ retval.push_back("struct nfs42_offload_status_args;");
+ retval.push_back("struct nfs42_seek_args;");
+ retval.push_back("struct nfs42_seek_res;");
+ retval.push_back("struct nfs_direct_req;");
+ retval.push_back("struct nfs_page;");
+ retval.push_back("struct opa_smp;");
+ retval.push_back("struct p9_fid;");
+ retval.push_back("struct pwc_device;");
+ retval.push_back("struct request;");
+ retval.push_back("struct rpc_auth;");
+ retval.push_back("struct rpc_gss_wire_cred;");
+ retval.push_back("struct rpcrdma_ep;");
+ retval.push_back("struct rpcrdma_mr;");
+ retval.push_back("struct rpcrdma_notification;");
+ retval.push_back("struct rpcrdma_rep;");
+ retval.push_back("struct rpcrdma_req;");
+ retval.push_back("struct rpcrdma_xprt;");
+ retval.push_back("struct rpc_rqst;");
+ retval.push_back("struct rpc_task;");
+ retval.push_back("struct selinux_audit_data;");
+ retval.push_back("struct spi_device;");
+ retval.push_back("struct svc_rdma_chunk;");
+ retval.push_back("struct svc_rdma_recv_ctxt;");
+ retval.push_back("struct svc_rdma_segment;");
+ retval.push_back("struct svc_rdma_send_ctxt;");
+ retval.push_back("struct svc_rqst;");
+ retval.push_back("struct svcxprt_rdma;");
+ retval.push_back("struct tmigr_cpu;");
+ retval.push_back("struct tmigr_group;");
+ retval.push_back("struct virtio_gpu_ctrl_hdr;");
+ retval.push_back("struct virtqueue;");
+ retval.push_back("struct somenonexistentstruct_123;");
+ retval.push_back("union ifs_sbaf;");
+ retval.push_back("union ifs_sbaf_status;");
+ retval.push_back("union tmigr_state;");
+ return retval;
+}
static vector<string> tracepoint_extra_decls (systemtap_session& s,
const string& header,
@@ -12187,6 +12270,8 @@ tracepoint_derived_probe_group::emit_module_decls (systemtap_session& s)
s.op->newline();
+
+
// We create a MODULE_aux_N.c file for each tracepoint header, to allow them
// to be separately compiled. That's because kernel tracepoint headers sometimes
// conflict. PR13155.
@@ -12207,6 +12292,11 @@ tracepoint_derived_probe_group::emit_module_decls (systemtap_session& s)
tpop = s.op_create_auxiliary();
per_header_aux[header] = tpop;
+ // add needed forward decls/#includes
+ static vector<string> forward_decls = tracepoint_forward_decls();
+ for (unsigned z=0; z<forward_decls.size(); z++)
+ tpop->newline()<< forward_decls[z] << "\n";
+
// PR9993: Add extra headers to work around undeclared types in individual
// include/trace/foo.h files
const vector<string>& extra_decls = tracepoint_extra_decls (s, header,
@@ -12773,83 +12863,10 @@ tracepoint_builder::get_tracequery_modules(systemtap_session& s,
osrc << "#ifdef CONFIG_TRACEPOINTS" << endl;
osrc << "#include <linux/tracepoint.h>" << endl;
- osrc << "enum cachefiles_content;" << endl;
- osrc << "enum extent_type;" << endl;
- osrc << "struct bch_fs;" << endl;
- osrc << "struct bch_move_stats;" << endl;
- osrc << "struct bpos;" << endl;
- osrc << "struct btree_bkey_cached_common;" << endl;
- osrc << "struct btree_insert_entry;" << endl;
- osrc << "struct btree_path;" << endl;
- osrc << "struct btree_trans;" << endl;
- osrc << "struct cachefiles_msg;" << endl;
- osrc << "struct cachefiles_open;" << endl;
- osrc << "struct cachefiles_read;" << endl;
- osrc << "struct cachefiles_volume;" << endl;
- osrc << "struct clk_rate_request;" << endl;
- osrc << "struct compact_control;" << endl;
- osrc << "struct fsi_device;" << endl;
- osrc << "struct fsi_msg;" << endl;
- osrc << "struct fsi_slave;" << endl;
- osrc << "struct fuse_req;" << endl;
- osrc << "struct get_locks_fail;" << endl;
- osrc << "struct gss_cred;" << endl;
- osrc << "struct handshake_req;" << endl;
- osrc << "struct i2c_client;" << endl;
- osrc << "struct ib_mad_agent_private;" << endl;
- osrc << "struct ib_mad_qp_info;" << endl;
- osrc << "struct ib_mad_send_wr_private;" << endl;
- osrc << "struct ib_smp;" << endl;
- osrc << "struct iomap;" << endl;
- osrc << "struct iomap_iter;" << endl;
- osrc << "struct mctp_sk_key;" << endl;
- osrc << "struct mptcp_ext;" << endl;
- osrc << "struct mptcp_subflow_context;" << endl;
- osrc << "struct nbd_request;" << endl;
- osrc << "struct netfs_io_request;" << endl;
- osrc << "struct netfs_io_stream;" << endl;
- osrc << "struct netfs_io_subrequest;" << endl;
- osrc << "struct nfs42_clone_args;" << endl;
- osrc << "struct nfs42_copy_args;" << endl;
- osrc << "struct nfs42_copy_notify_args;" << endl;
- osrc << "struct nfs42_copy_notify_res;" << endl;
- osrc << "struct nfs42_copy_res;" << endl;
- osrc << "struct nfs42_falloc_args;" << endl;
- osrc << "struct nfs42_offload_status_args;" << endl;
- osrc << "struct nfs42_seek_args;" << endl;
- osrc << "struct nfs42_seek_res;" << endl;
- osrc << "struct nfs_direct_req;" << endl;
- osrc << "struct nfs_page;" << endl;
- osrc << "struct opa_smp;" << endl;
- osrc << "struct p9_fid;" << endl;
- osrc << "struct pwc_device;" << endl;
- osrc << "struct request;" << endl;
- osrc << "struct rpc_auth;" << endl;
- osrc << "struct rpc_gss_wire_cred;" << endl;
- osrc << "struct rpcrdma_ep;" << endl;
- osrc << "struct rpcrdma_mr;" << endl;
- osrc << "struct rpcrdma_notification;" << endl;
- osrc << "struct rpcrdma_rep;" << endl;
- osrc << "struct rpcrdma_req;" << endl;
- osrc << "struct rpcrdma_xprt;" << endl;
- osrc << "struct rpc_rqst;" << endl;
- osrc << "struct rpc_task;" << endl;
- osrc << "struct selinux_audit_data;" << endl;
- osrc << "struct spi_device;" << endl;
- osrc << "struct svc_rdma_chunk;" << endl;
- osrc << "struct svc_rdma_recv_ctxt;" << endl;
- osrc << "struct svc_rdma_segment;" << endl;
- osrc << "struct svc_rdma_send_ctxt;" << endl;
- osrc << "struct svc_rqst;" << endl;
- osrc << "struct svcxprt_rdma;" << endl;
- osrc << "struct tmigr_cpu;" << endl;
- osrc << "struct tmigr_group;" << endl;
- osrc << "struct virtio_gpu_ctrl_hdr;" << endl;
- osrc << "struct virtqueue;" << endl;
- osrc << "struct somenonexistentstruct_123;" << endl;
- osrc << "union ifs_sbaf;" << endl;
- osrc << "union ifs_sbaf_status;" << endl;
- osrc << "union tmigr_state;" << endl;
+ // add needed forward decls/#includes
+ static vector<string> forward_decls = tracepoint_forward_decls();
+ for (unsigned z=0; z<forward_decls.size(); z++)
+ osrc << forward_decls[z] << "\n";
// BPF raw tracepoint macros for creating the multiple fields
// of the data struct that describes the raw tracepoint.

604
SOURCES/systemtap-defined.patch Normal file
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@ -0,0 +1,604 @@
commit 4eb1b10d893b8020315df7dd5215a087ebd39372
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Mon May 19 16:51:42 2025 -0400
PR32964 part 1: improve diagnostics of @defined resolution
The @defined construct is special in that it is attempted to be
resolved to literal 1/0 fairly early during semantic analysis pass-2,
so that it can guard $context variable references. But this early
processing is not that systematic: not all script level constructs
properly nest with it. Those cases that don't happen to match end
up resolved to 0 as a fallback in late during pass-2, due to PR18079.
This patch adds verbosity diagnostics for some of these cases, and a
warning message for the fallback resolution path. This triggers
for the test case associated with this bugzilla report.
diff --git a/dwflpp.cxx b/dwflpp.cxx
index 1105272f2..62ae15837 100644
--- a/dwflpp.cxx
+++ b/dwflpp.cxx
@@ -4427,8 +4427,9 @@ dwflpp::literal_stmt_for_pointer (location_context &ctx,
Dwarf_Die *die_mem)
{
if (sess.verbose>2)
- clog << _F("literal_stmt_for_pointer: finding value for %s (%s)\n",
- dwarf_type_name(start_typedie).c_str(), (dwarf_diename(cu) ?: "<unknown>"));
+ clog << _("literal_stmt_for_pointer: finding value for ") << *e->tok
+ << _F(" type %s (%s)\n",
+ dwarf_type_name(start_typedie).c_str(), (dwarf_diename(cu) ?: "<unknown>"));
assert(ctx.pointer != NULL);
location *tail = ctx.translate_argument (ctx.pointer);
diff --git a/elaborate.cxx b/elaborate.cxx
index 865fe6555..023b4c08f 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -1894,7 +1894,7 @@ semantic_pass_symbols (systemtap_session& s)
assert_no_interrupts();
stapfile* dome = s.files[i];
- // Pass 1: add globals and functions to systemtap-session primart list,
+ // Pass 1: add globals and functions to systemtap-session primary list,
// so the find_* functions find them
//
// NB: tapset global/function definitions may duplicate or conflict
@@ -2796,6 +2796,8 @@ symresolution_info::visit_symbol (symbol* e)
vardecl* d = find_var (e->name, 0, e->tok);
if (d)
{
+ if (session.verbose > 4)
+ clog << "resolved variable " << *e->tok << " to " << *d->tok << endl;
e->referent = d;
e->name = d->name;
}
@@ -2814,6 +2816,8 @@ symresolution_info::visit_symbol (symbol* e)
// must be probe-condition expression
throw SEMANTIC_ERROR (_("probe condition must not reference undeclared global"), e->tok);
e->referent = v;
+ if (session.verbose > 4)
+ clog << "resolved variable " << *e->tok << " to new local" << endl;
}
}
@@ -5112,6 +5116,7 @@ const_folder::visit_defined_op (defined_op* e)
// Don't be greedy... we'll only collapse one at a time so type
// resolution can have another go at it.
relaxed_p = false;
+ session.print_warning (_F("Collapsing unresolved @define to %ld", value), e->tok);
literal_number* n = new literal_number (value);
n->tok = e->tok;
n->visit (this);
diff --git a/tapsets.cxx b/tapsets.cxx
index d25c85043..01fec29e3 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -3118,9 +3118,22 @@ var_expanding_visitor::visit_defined_op (defined_op* e)
target_symbol* tsym = dynamic_cast<target_symbol*> (e->operand);
if (tsym && tsym->saved_conversion_error) // failing
- resolved = false;
+ {
+ if (sess.verbose>3)
+ {
+ for (const semantic_error *c = tsym->saved_conversion_error;
+ c != 0;
+ c = c->get_chain()) {
+ clog << _("variable location problem [man error::dwarf]: ") << c->what() << endl;
+ }
+ }
+ resolved = false;
+ }
else if (e->operand == old_operand) // unresolved but not marked failing
{
+ if (sess.verbose>3)
+ clog << _("@defined unresolved due to un-rewritten operand ") << *e << endl;
+
// There are some visitors that won't touch certain target_symbols,
// e.g. dwarf_var_expanding_visitor won't resolve @cast. We should
// leave it for now so some other visitor can have a chance.
@@ -3132,6 +3145,8 @@ var_expanding_visitor::visit_defined_op (defined_op* e)
resolved = true;
} catch (const semantic_error& e) {
// some uncooperative value like @perf("NO_SUCH_VALUE")
+ if (sess.verbose > 3)
+ clog << sess.build_error_msg (e);
resolved = false;
}
defined_ops.pop ();
commit b36c59692966c6207bf6f69b2f6f91079f7b89ab
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Mon May 19 22:30:29 2025 -0400
PR32964 part 2: document new @defined() warning
... in [man stapprobes], though [man stap] is where autocast variable
processing is documented in the "TYPECASTING" section.
diff --git a/elaborate.cxx b/elaborate.cxx
index 023b4c08f..c09e3ddca 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -5116,7 +5116,7 @@ const_folder::visit_defined_op (defined_op* e)
// Don't be greedy... we'll only collapse one at a time so type
// resolution can have another go at it.
relaxed_p = false;
- session.print_warning (_F("Collapsing unresolved @define to %ld", value), e->tok);
+ session.print_warning (_F("Collapsing unresolved @define to %ld [stapprobes]", value), e->tok);
literal_number* n = new literal_number (value);
n->tok = e->tok;
n->visit (this);
diff --git a/man/stapprobes.3stap b/man/stapprobes.3stap
index 1f980567b..d395e3578 100644
--- a/man/stapprobes.3stap
+++ b/man/stapprobes.3stap
@@ -700,6 +700,11 @@ for use in conditionals such as
.SAMPLE
@defined($foo\->bar) ? $foo\->bar : 0
.ESAMPLE
+Use full $context variables or @cast() expressions in @define parameters
+for unambiguous processing. The TYPECAST script-level variable
+facility is incompletely supported. Simplify the parameters by reducing
+nesting or indirection, if encountering "Collapsing unresolved @define to ..."
+warnings.
.TP
@probewrite($VAR)
see the PROBES section of \fIstap\fR(1).
commit e4786671a999d47003ea62525ed829c1784c03ea
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Thu May 22 17:14:53 2025 -0400
PR32964 part 3: include autocast processing in initial_typeres_pass
This type resolution pass is done early, but previously purposefully
ommitted opportunistic autocast expansion. With it done there, once
(in the usual relaxation loop), more autocast-based @defined /
@choose_defined constructs will be processed in the way a user
may expect.
diff --git a/elaborate.cxx b/elaborate.cxx
index c09e3ddca..b03f0aced 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -2602,7 +2602,7 @@ semantic_pass (systemtap_session& s)
if (rc == 0) rc = semantic_pass_symbols (s);
if (rc == 0) monitor_mode_write (s);
if (rc == 0) rc = semantic_pass_conditions (s);
- if (rc == 0) rc = semantic_pass_optimize1 (s);
+ if (rc == 0) rc = semantic_pass_optimize1 (s); // includes const_fold and last ditch @defined() processing
if (rc == 0) rc = semantic_pass_types (s);
if (rc == 0) rc = gen_dfa_table(s);
if (rc == 0) add_global_var_display (s);
@@ -6045,7 +6045,7 @@ struct initial_typeresolution_info : public typeresolution_info
static int initial_typeres_pass(systemtap_session& s)
{
// minimal type resolution based off of semantic_pass_types(), without
- // checking for complete type resolutions or autocast expanding
+ // checking for complete type resolutions, PR32964 but including autocast expanding
initial_typeresolution_info ti(s);
ti.assert_resolvability = false;
@@ -6067,6 +6067,30 @@ static int initial_typeres_pass(systemtap_session& s)
ti.current_function = fd;
ti.t = pe_unknown;
fd->body->visit (& ti);
+
+ // Check and run the autocast expanding visitor.
+ if (ti.num_available_autocasts > 0)
+ {
+ autocast_expanding_visitor aev (s, ti);
+ aev.replace (fd->body);
+
+ // PR18079, rerun the const-folder / dead-block-remover
+ // if autocast evaluation enabled a @defined()
+ if (! aev.relaxed())
+ {
+ bool relaxed_p = true;
+ const_folder cf (s, relaxed_p);
+ cf.replace (fd->body);
+ if (! s.unoptimized)
+ {
+ dead_control_remover dc (s, relaxed_p);
+ fd->body->visit (&dc);
+ }
+ (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
+ }
+
+ ti.num_available_autocasts = 0;
+ }
}
for (unsigned j=0; j<s.probes.size(); j++)
@@ -6079,6 +6103,24 @@ static int initial_typeres_pass(systemtap_session& s)
ti.t = pe_unknown;
pn->body->visit (& ti);
+ // Check and run the autocast expanding visitor.
+ if (ti.num_available_autocasts > 0)
+ {
+ autocast_expanding_visitor aev (s, ti);
+ var_expand_const_fold_loop (s, pn->body, aev);
+ // PR18079, rerun the const-folder / dead-block-remover
+ // if autocast evaluation enabled a @defined()
+ if (! s.unoptimized)
+ {
+ bool relaxed_p;
+ dead_control_remover dc (s, relaxed_p);
+ pn->body->visit (&dc);
+ (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
+ }
+
+ ti.num_available_autocasts = 0;
+ }
+
probe_point* pp = pn->sole_location();
if (pp->condition)
{
@@ -6147,30 +6189,8 @@ semantic_pass_types (systemtap_session& s)
// ti.unresolved (fd->tok);
for (unsigned i=0; i < fd->locals.size(); ++i)
ti.check_local (fd->locals[i]);
-
- // Check and run the autocast expanding visitor.
- if (ti.num_available_autocasts > 0)
- {
- autocast_expanding_visitor aev (s, ti);
- aev.replace (fd->body);
-
- // PR18079, rerun the const-folder / dead-block-remover
- // if autocast evaluation enabled a @defined()
- if (! aev.relaxed())
- {
- bool relaxed_p = true;
- const_folder cf (s, relaxed_p);
- cf.replace (fd->body);
- if (! s.unoptimized)
- {
- dead_control_remover dc (s, relaxed_p);
- fd->body->visit (&dc);
- }
- (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
- }
- ti.num_available_autocasts = 0;
- }
+ // PR32964: autocast resolution is now done early in initial_typeres_pass
}
catch (const semantic_error& e)
{
@@ -6191,24 +6211,8 @@ semantic_pass_types (systemtap_session& s)
pn->body->visit (& ti);
for (unsigned i=0; i < pn->locals.size(); ++i)
ti.check_local (pn->locals[i]);
-
- // Check and run the autocast expanding visitor.
- if (ti.num_available_autocasts > 0)
- {
- autocast_expanding_visitor aev (s, ti);
- var_expand_const_fold_loop (s, pn->body, aev);
- // PR18079, rerun the const-folder / dead-block-remover
- // if autocast evaluation enabled a @defined()
- if (! s.unoptimized)
- {
- bool relaxed_p;
- dead_control_remover dc (s, relaxed_p);
- pn->body->visit (&dc);
- (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
- }
- ti.num_available_autocasts = 0;
- }
+ // PR32964: autocast resolution is now done early in initial_typeres_pass
probe_point* pp = pn->sole_location();
if (pp->condition)
commit 3122ff592bdfcf553afa6683724e90c359f3c5c9
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Fri May 30 17:50:10 2025 -0400
PR32964 part 4: let autocast pass propagate vardecl/symbol type_details
The initial_typeres_pass now communicates relaxed status,
and its autocast_expanding_visitor now passes vardecl type_details
to the symbols. This way, the existing const_folder etc. visitors
can deduce enough type info for @defined(an_autocast_var->foo->bar)
constructs, and early enough, that @defined() works as intended.
New testsuite/semok/definedautocast.stp tests a simple case.
diff --git a/elaborate.cxx b/elaborate.cxx
index b03f0aced..7a1609f1b 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -5163,7 +5163,7 @@ const_folder::visit_target_symbol (target_symbol* e)
}
}
-static int initial_typeres_pass(systemtap_session& s);
+static int initial_typeres_pass(systemtap_session& s, bool& relaxed_p);
static int semantic_pass_const_fold (systemtap_session& s, bool& relaxed_p)
{
// attempt an initial type resolution pass to see if there are any type
@@ -5171,7 +5171,7 @@ static int semantic_pass_const_fold (systemtap_session& s, bool& relaxed_p)
// with a const.
// return if the initial type resolution pass reported errors (type mismatches)
- int rc = initial_typeres_pass(s);
+ int rc = initial_typeres_pass(s, relaxed_p);
if (rc)
{
relaxed_p = true;
@@ -5994,6 +5994,25 @@ struct autocast_expanding_visitor: public var_expanding_visitor
}
}
+ void visit_symbol (symbol* e) // propagate referent exp_type
+ {
+ // PR32964: mimic typeresolution_info::resolve_details, for case
+ // where the symbol (autocast_op operand) is within a @defined().
+
+ if (e->referent && e->referent->type_details && !e->type_details)
+ {
+ const exp_type_ptr &src = e->referent->type_details;
+ exp_type_ptr &dest = e->type_details;
+ dest = src;
+ ti.num_newly_resolved++;
+ relaxed_p = false;
+ if (sess.verbose > 4)
+ clog << "resolved early type details " << *dest << " to " << *e->tok << endl;
+ }
+ var_expanding_visitor::visit_symbol (e);
+ }
+
+
void visit_autocast_op (autocast_op* e)
{
const bool lvalue = is_active_lvalue (e);
@@ -6004,7 +6023,7 @@ struct autocast_expanding_visitor: public var_expanding_visitor
if (fc)
{
ti.num_newly_resolved++;
-
+ relaxed_p = false;
resolve_functioncall (fc);
// NB: at this stage, the functioncall object has one
// argument too few if we're in lvalue context. It will
@@ -6042,7 +6061,7 @@ struct initial_typeresolution_info : public typeresolution_info
void visit_cast_op (cast_op*) {}
};
-static int initial_typeres_pass(systemtap_session& s)
+static int initial_typeres_pass(systemtap_session& s, bool& relaxed_p)
{
// minimal type resolution based off of semantic_pass_types(), without
// checking for complete type resolutions, PR32964 but including autocast expanding
@@ -6069,7 +6088,7 @@ static int initial_typeres_pass(systemtap_session& s)
fd->body->visit (& ti);
// Check and run the autocast expanding visitor.
- if (ti.num_available_autocasts > 0)
+ if (true || ti.num_available_autocasts > 0)
{
autocast_expanding_visitor aev (s, ti);
aev.replace (fd->body);
@@ -6078,7 +6097,7 @@ static int initial_typeres_pass(systemtap_session& s)
// if autocast evaluation enabled a @defined()
if (! aev.relaxed())
{
- bool relaxed_p = true;
+ // bool relaxed_p = true;
const_folder cf (s, relaxed_p);
cf.replace (fd->body);
if (! s.unoptimized)
@@ -6086,7 +6105,7 @@ static int initial_typeres_pass(systemtap_session& s)
dead_control_remover dc (s, relaxed_p);
fd->body->visit (&dc);
}
- (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
+ // (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
}
ti.num_available_autocasts = 0;
@@ -6104,7 +6123,7 @@ static int initial_typeres_pass(systemtap_session& s)
pn->body->visit (& ti);
// Check and run the autocast expanding visitor.
- if (ti.num_available_autocasts > 0)
+ if (true || ti.num_available_autocasts > 0)
{
autocast_expanding_visitor aev (s, ti);
var_expand_const_fold_loop (s, pn->body, aev);
@@ -6112,10 +6131,10 @@ static int initial_typeres_pass(systemtap_session& s)
// if autocast evaluation enabled a @defined()
if (! s.unoptimized)
{
- bool relaxed_p;
+ // bool relaxed_p;
dead_control_remover dc (s, relaxed_p);
pn->body->visit (&dc);
- (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
+ // (void) relaxed_p; // we judge success later by num_still_unresolved, not this flag
}
ti.num_available_autocasts = 0;
diff --git a/testsuite/semok/definedautocast.stp b/testsuite/semok/definedautocast.stp
new file mode 100755
index 000000000..b28be6118
--- /dev/null
+++ b/testsuite/semok/definedautocast.stp
@@ -0,0 +1,6 @@
+#! stap -Wp2
+
+probe kernel.function("do_exit") {
+ x = & @cast(0, "struct block_device")
+ println(@defined(x->__bd_flags->counter))
+}
commit 778ba67e356dc1820acc8ecdaa2c4b608c2eb184
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Fri May 30 22:10:36 2025 -0400
PR32964 part 5: tweak type inference propagation
Because some type inference is now performed earlier than before,
coupled with early const-folding (so dead code elimination), tests
like semko/binexpr_infer_type.stp started passing with immediately
prior code. That's because constructs like (foo*0) got quietly
replaced by 0, even if foo was typed pe_string. This patch
compensates for this change in behaviour by:
- typeresolution_info::resolve_2types now propagates types
more aggressively & recursively in its three-way inference,
so that the unknown x string x long case is detected in one
incoming invocation of the function, instead of being
deferred to some unknown later relaxation-iteration round.
- typeresolution_info::mismatch reporting errors, independent
of "assert_resolvability". That flag was most likely meant
for detection & rejection of pe_unknown types at the end of
all the optimization stuff, not for ignoring outright known
conflicts.
diff --git a/elaborate.cxx b/elaborate.cxx
index 7a1609f1b..d93a83eca 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -6683,21 +6683,21 @@ void resolve_2types (Referrer* referrer, Referent* referent,
// propagate from upstream
re_type = t;
r->resolved (re_tok, re_type);
- // catch re_type/te_type mismatch later
+ resolve_2types (referrer, referent, r, t, accept_unknown);
}
else if (re_type == pe_unknown && te_type != pe_unknown)
{
// propagate from referent
re_type = te_type;
r->resolved (re_tok, re_type);
- // catch re_type/t mismatch later
+ resolve_2types (referrer, referent, r, t, accept_unknown);
}
else if (re_type != pe_unknown && te_type == pe_unknown)
{
// propagate to referent
te_type = re_type;
r->resolved (re_tok, re_type, referent);
- // catch re_type/t mismatch later
+ resolve_2types (referrer, referent, r, t, accept_unknown);
}
else if (! accept_unknown)
r->unresolved (re_tok);
@@ -7636,14 +7636,14 @@ typeresolution_info::mismatch (const binary_expression* e)
{
num_still_unresolved ++;
- if (assert_resolvability && mismatch_complexity <= 1)
+ if (mismatch_complexity <= 1)
{
stringstream msg;
msg << _F("type mismatch: left and right sides don't agree (%s vs %s)",
lex_cast(e->left->type).c_str(), lex_cast(e->right->type).c_str());
session.print_error (SEMANTIC_ERROR (msg.str(), e->tok));
}
- else if (!assert_resolvability)
+ else
mismatch_complexity = max(1, mismatch_complexity);
}
@@ -7656,7 +7656,7 @@ typeresolution_info::mismatch (const token* tok, exp_type t1, exp_type t2)
{
num_still_unresolved ++;
- if (assert_resolvability && mismatch_complexity <= 2)
+ if (mismatch_complexity <= 2)
{
stringstream msg;
msg << _F("type mismatch: expected %s", lex_cast(t1).c_str());
@@ -7664,7 +7664,7 @@ typeresolution_info::mismatch (const token* tok, exp_type t1, exp_type t2)
msg << _F(" but found %s", lex_cast(t2).c_str());
session.print_error (SEMANTIC_ERROR (msg.str(), tok));
}
- else if (!assert_resolvability)
+ else
mismatch_complexity = max(2, mismatch_complexity);
}
@@ -7679,7 +7679,7 @@ typeresolution_info::mismatch (const token *tok, exp_type type,
{
num_still_unresolved ++;
- if (assert_resolvability && mismatch_complexity <= 3)
+ if (mismatch_complexity <= 3)
{
assert(decl != NULL);
@@ -7737,7 +7737,7 @@ typeresolution_info::mismatch (const token *tok, exp_type type,
err.set_chain(chain);
session.print_error (err);
}
- else if (!assert_resolvability)
+ else
mismatch_complexity = max(3, mismatch_complexity);
}
commit fd4322e38d1e6504341b67329e112ccc1af387b6
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Sat May 31 09:15:33 2025 -0400
PR32964 part 6: NEWS & old testcase
It turns out there was one old testcase that relied on type
non-checking upon elided variables. This test has been removed, and
the change mentioned in NEWS. Unfortunately, this is is hard to make
conditional on --compatible=XXXX, so hypothetical old (arguably buggy)
scripts may get hit.
diff --git a/NEWS b/NEWS
index 01b74a671..f1d78e8fa 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+* What's new in version 5.4
+
+- Type checking and autocast processing have been made more thorough,
+ so elided variables are checked more and @defined() tests may be
+ more complicated. Preexisting scripts that rely on elision for
+ bypassing type violations may now get caught. No --compatible
+ option exists to suppress this new behaviour.
+
* What's new in version 5.3, 2025-05-02
- Updated to support drastic linux 6.13 kbuild changes, numerous
diff --git a/testsuite/semok/pr30570.stp b/testsuite/semok/pr30570.stp
index b711b214c..dda7d027c 100755
--- a/testsuite/semok/pr30570.stp
+++ b/testsuite/semok/pr30570.stp
@@ -24,13 +24,16 @@ probe oneshot {
}
# error var and the try block are elided which means
-# it's not an issue to use e4 as a long here
-global e4 = 10
-probe oneshot {
- try { }
- catch (e4)
- { }
-}
+# it's not an issue to use e4 as a long here ...
+# except after PR32964, type checking is done more
+# systematically on even elided variables, so this
+# would be an error!
+# global e4 = 10
+# probe oneshot {
+# try { }
+# catch (e4)
+# { }
+# }
# e5 can be a global string
global e5 = "foo"

59
SOURCES/systemtap-dev_tapset.patch Normal file
View File

@ -0,0 +1,59 @@
commit ea6ec6da37f1d3ec9ab1c3b5808287676c9d3742
Author: William Cohen <wcohen@redhat.com>
Date: Mon Jun 2 11:15:44 2025 -0400
RHEL-90805: Fix dev.stp tapset to work with RHEL 9.7 kernel
RHEL 9.7 kernels have backported block dev support from Linux 6.14.
The test in the dev.stp tapset checked the kernel version to determine
where to get information and that test did not work in the case of
code backported to the older RHEL 9 Linux 5.14 kernel. The dev.stp
code has been reworked to search for the particular member field
holding the information instead.
diff --git a/tapset/linux/dev.stp b/tapset/linux/dev.stp
index f6b90c5d3..56b8e63c4 100644
--- a/tapset/linux/dev.stp
+++ b/tapset/linux/dev.stp
@@ -64,17 +64,19 @@ function disk_name:string(hd:long, partno:long)
return sprintf("%s%d", disk_name, partno)
}
-%( kernel_v >= "6.10" %?
%{
+#include <linux/blk_types.h>
#include <linux/blkdev.h>
%}
function bdev_partno(bdev:long)
%{ /* pure */ /* unprivileged */
+#ifdef BD_PARTNO
STAP_RETURN(bdev_partno((const struct block_device *) STAP_ARG_bdev));
+#else
+ STAP_RETURN(0);
+#endif
%}
-%:
-%)
function bdevname:string(bdev:long)
{
@@ -84,15 +86,13 @@ function bdevname:string(bdev:long)
hd = bdev->bd_disk
-%( kernel_v >= "6.10" %?
- partno = bdev_partno(bdev)
-%:
- if (@defined(@cast(bdev, "block_device", "kernel")->bd_partno))
+ if (@defined(&bdev->__bd_flags))
+ partno = bdev_partno(bdev)
+ else if (@defined(bdev->bd_partno))
partno = bdev->bd_partno
else if (bdev->bd_part)
partno = bdev->bd_part->partno
else
partno = MINOR(bdev->bd_dev) - hd->first_minor;
-%)
return disk_name(hd, partno)
}

65
SPECS/systemtap.spec
View File

@ -13,8 +13,8 @@
%endif %endif
%{!?with_rpm: %global with_rpm 1} %{!?with_rpm: %global with_rpm 1}
%{!?elfutils_version: %global elfutils_version 0.179} %{!?elfutils_version: %global elfutils_version 0.179}
%{!?with_boost: %global with_boost 0} %{!?with_boost: %global with_boost 1}
%ifarch %{ix86} x86_64 ppc ppc64 ppc64le aarch64 %ifarch x86_64 ppc ppc64 ppc64le aarch64
%{!?with_dyninst: %global with_dyninst 0%{?fedora} >= 18 || 0%{?rhel} >= 7} %{!?with_dyninst: %global with_dyninst 0%{?fedora} >= 18 || 0%{?rhel} >= 7}
%else %else
%{!?with_dyninst: %global with_dyninst 0} %{!?with_dyninst: %global with_dyninst 0}
@ -45,6 +45,10 @@
%{!?with_httpd: %global with_httpd 0} %{!?with_httpd: %global with_httpd 0}
%{!?with_specific_python: %global with_specific_python 0%{?fedora} >= 31} %{!?with_specific_python: %global with_specific_python 0%{?fedora} >= 31}
%{!?with_sysusers: %global with_sysusers 0%{?fedora} >= 32 || 0%{?rhel} >= 9} %{!?with_sysusers: %global with_sysusers 0%{?fedora} >= 32 || 0%{?rhel} >= 9}
# NB: can't turn this on by default on any distro version whose builder system
# may run kernels different than the distro version itself.
%{!?with_check: %global with_check 0}
# Virt is supported on these arches, even on el7, but it's not in core EL7 # Virt is supported on these arches, even on el7, but it's not in core EL7
%if 0%{?rhel} && 0%{?rhel} <= 7 %if 0%{?rhel} && 0%{?rhel} <= 7
@ -120,8 +124,8 @@ m stapdev stapdev
Name: systemtap Name: systemtap
# PRERELEASE # PRERELEASE
Version: 5.2 Version: 5.3
Release: 2%{?release_override}%{?dist} Release: 3%{?release_override}%{?dist}
# for version, see also configure.ac # for version, see also configure.ac
@ -133,7 +137,7 @@ Release: 2%{?release_override}%{?dist}
# systemtap-runtime /usr/bin/staprun, /usr/bin/stapsh, /usr/bin/stapdyn # systemtap-runtime /usr/bin/staprun, /usr/bin/stapsh, /usr/bin/stapdyn
# systemtap-client /usr/bin/stap, samples, docs, tapset(bonus), req:-runtime # systemtap-client /usr/bin/stap, samples, docs, tapset(bonus), req:-runtime
# systemtap-initscript /etc/init.d/systemtap, dracut module, req:systemtap # systemtap-initscript /etc/init.d/systemtap, dracut module, req:systemtap
# systemtap-sdt-devel /usr/include/sys/sdt.h AND /usr/bin/dtrace # systemtap-sdt-devel /usr/include/sys/sdt.h
# systemtap-sdt-dtrace /usr/bin/dtrace # systemtap-sdt-dtrace /usr/bin/dtrace
# systemtap-testsuite /usr/share/systemtap/testsuite*, req:systemtap, req:sdt-devel # systemtap-testsuite /usr/share/systemtap/testsuite*, req:systemtap, req:sdt-devel
# systemtap-runtime-java libHelperSDT.so, HelperSDT.jar, stapbm, req:-runtime # systemtap-runtime-java libHelperSDT.so, HelperSDT.jar, stapbm, req:-runtime
@ -158,7 +162,9 @@ Summary: Programmable system-wide instrumentation system
License: GPL-2.0-or-later License: GPL-2.0-or-later
URL: https://sourceware.org/systemtap/ URL: https://sourceware.org/systemtap/
Source: ftp://sourceware.org/pub/systemtap/releases/systemtap-%{version}.tar.gz Source: ftp://sourceware.org/pub/systemtap/releases/systemtap-%{version}.tar.gz
Patch0: PR32302.patch
Patch1: systemtap-defined.patch
Patch2: systemtap-dev_tapset.patch
# Build* # Build*
BuildRequires: make BuildRequires: make
@ -186,9 +192,7 @@ BuildRequires: pkgconfig(ncurses)
BuildRequires: systemd BuildRequires: systemd
%endif %endif
# Needed for libstd++ < 4.0, without <tr1/memory> # Needed for libstd++ < 4.0, without <tr1/memory>
%if %{with_boost}
BuildRequires: boost-devel BuildRequires: boost-devel
%endif
%if %{with_crash} %if %{with_crash}
BuildRequires: crash-devel zlib-devel BuildRequires: crash-devel zlib-devel
%endif %endif
@ -244,6 +248,12 @@ BuildRequires: libuuid-devel
%if %{with_sysusers} %if %{with_sysusers}
BuildRequires: systemd-rpm-macros BuildRequires: systemd-rpm-macros
%endif %endif
%if %{with_check}
BuildRequires: kernel-devel
# and some of the same Requires: as below
BuildRequires: dejagnu gcc make
%endif
# Install requirements # Install requirements
@ -382,12 +392,13 @@ boot-time probing if supported.
Summary: Static probe support header files Summary: Static probe support header files
License: GPL-2.0-or-later AND CC0-1.0 License: GPL-2.0-or-later AND CC0-1.0
URL: https://sourceware.org/systemtap/ URL: https://sourceware.org/systemtap/
# for RHEL buildability compatibility, pull in sdt-dtrace at all times
Requires: systemtap-sdt-dtrace = %{version}-%{release}
%description sdt-devel %description sdt-devel
This package includes the <sys/sdt.h> header file used for static This package includes the <sys/sdt.h> header file used for static
instrumentation compiled into userspace programs. instrumentation compiled into userspace programs.
%package sdt-dtrace %package sdt-dtrace
Summary: Static probe support dtrace tool Summary: Static probe support dtrace tool
License: GPL-2.0-or-later AND CC0-1.0 License: GPL-2.0-or-later AND CC0-1.0
@ -595,8 +606,7 @@ or within a container.
# ------------------------------------------------------------------------ # ------------------------------------------------------------------------
%prep %prep
%setup -q %autosetup -p1
%patch -P0 -p1
%build %build
@ -849,9 +859,18 @@ done
%py3_shebang_fix %{buildroot}%{python3_sitearch} %{buildroot}%{_bindir}/* %py3_shebang_fix %{buildroot}%{python3_sitearch} %{buildroot}%{_bindir}/*
%endif %endif
%check
%if %{with_check}
make check RUNTESTFLAGS=environment_sanity.exp
%endif
%pre runtime %pre runtime
%if %{with_sysusers} %if %{with_sysusers}
%if (0%{?fedora} && 0%{?fedora} < 42) || (0%{?rhel} && 0%{?rhel} < 11)
echo '%_systemtap_runtime_preinstall' | systemd-sysusers --replace=%{_sysusersdir}/systemtap-runtime.conf - echo '%_systemtap_runtime_preinstall' | systemd-sysusers --replace=%{_sysusersdir}/systemtap-runtime.conf -
exit 0
%endif
%else %else
getent group stapusr >/dev/null || groupadd -f -g 156 -r stapusr getent group stapusr >/dev/null || groupadd -f -g 156 -r stapusr
getent group stapsys >/dev/null || groupadd -f -g 157 -r stapsys getent group stapsys >/dev/null || groupadd -f -g 157 -r stapsys
@ -859,23 +878,29 @@ getent group stapdev >/dev/null || groupadd -f -g 158 -r stapdev
getent passwd stapunpriv >/dev/null || \ getent passwd stapunpriv >/dev/null || \
useradd -c "Systemtap Unprivileged User" -u 159 -g stapunpriv -d %{_localstatedir}/lib/stapunpriv -r -s /sbin/nologin stapunpriv 2>/dev/null || \ useradd -c "Systemtap Unprivileged User" -u 159 -g stapunpriv -d %{_localstatedir}/lib/stapunpriv -r -s /sbin/nologin stapunpriv 2>/dev/null || \
useradd -c "Systemtap Unprivileged User" -g stapunpriv -d %{_localstatedir}/lib/stapunpriv -r -s /sbin/nologin stapunpriv useradd -c "Systemtap Unprivileged User" -g stapunpriv -d %{_localstatedir}/lib/stapunpriv -r -s /sbin/nologin stapunpriv
%endif
exit 0 exit 0
%endif
%pre server %pre server
%if %{with_sysusers} %if %{with_sysusers}
%if (0%{?fedora} && 0%{?fedora} < 42) || (0%{?rhel} && 0%{?rhel} < 11)
echo '%_systemtap_server_preinstall' | systemd-sysusers --replace=%{_sysusersdir}/systemtap-server.conf - echo '%_systemtap_server_preinstall' | systemd-sysusers --replace=%{_sysusersdir}/systemtap-server.conf -
exit 0
%endif
%else %else
getent group stap-server >/dev/null || groupadd -f -g 155 -r stap-server getent group stap-server >/dev/null || groupadd -f -g 155 -r stap-server
getent passwd stap-server >/dev/null || \ getent passwd stap-server >/dev/null || \
useradd -c "Systemtap Compile Server" -u 155 -g stap-server -d %{_localstatedir}/lib/stap-server -r -s /sbin/nologin stap-server 2>/dev/null || \ useradd -c "Systemtap Compile Server" -u 155 -g stap-server -d %{_localstatedir}/lib/stap-server -r -s /sbin/nologin stap-server 2>/dev/null || \
useradd -c "Systemtap Compile Server" -g stap-server -d %{_localstatedir}/lib/stap-server -r -s /sbin/nologin stap-server useradd -c "Systemtap Compile Server" -g stap-server -d %{_localstatedir}/lib/stap-server -r -s /sbin/nologin stap-server
%endif
exit 0 exit 0
%endif
%pre testsuite %pre testsuite
%if %{with_sysusers} %if %{with_sysusers}
%if (0%{?fedora} && 0%{?fedora} < 42) || (0%{?rhel} && 0%{?rhel} < 11)
echo '%_systemtap_testsuite_preinstall' | systemd-sysusers --replace=%{_sysusersdir}/systemtap-testsuite.conf - echo '%_systemtap_testsuite_preinstall' | systemd-sysusers --replace=%{_sysusersdir}/systemtap-testsuite.conf -
exit 0
%endif
%else %else
getent passwd stapusr >/dev/null || \ getent passwd stapusr >/dev/null || \
useradd -c "Systemtap 'stapusr' User" -g stapusr -r -s /sbin/nologin stapusr useradd -c "Systemtap 'stapusr' User" -g stapusr -r -s /sbin/nologin stapusr
@ -883,8 +908,8 @@ getent passwd stapsys >/dev/null || \
useradd -c "Systemtap 'stapsys' User" -g stapsys -G stapusr -r -s /sbin/nologin stapsys useradd -c "Systemtap 'stapsys' User" -g stapsys -G stapusr -r -s /sbin/nologin stapsys
getent passwd stapdev >/dev/null || \ getent passwd stapdev >/dev/null || \
useradd -c "Systemtap 'stapdev' User" -g stapdev -G stapusr -r -s /sbin/nologin stapdev useradd -c "Systemtap 'stapdev' User" -g stapdev -G stapusr -r -s /sbin/nologin stapdev
%endif
exit 0 exit 0
%endif
%post server %post server
@ -1246,8 +1271,6 @@ exit 0
%doc README AUTHORS NEWS %doc README AUTHORS NEWS
%{!?_licensedir:%global license %%doc} %{!?_licensedir:%global license %%doc}
%license COPYING %license COPYING
%{_bindir}/dtrace
%{_mandir}/man1/dtrace.1*
%files sdt-dtrace %files sdt-dtrace
@ -1330,6 +1353,16 @@ exit 0
# PRERELEASE # PRERELEASE
%changelog %changelog
* Thu Jun 5 2025 William Cohen <wcohen@redhat.com> - 5.3-3
- RHEL-90805: Update dev.stp tapset to handle RHEL-9.7 kernels.
* Mon May 12 2025 Martin Cermak <mcermak@redhat.com> - 5.3-2
- RHEL-RHEL-89809: stap-server log owned by root
* Fri May 02 2025 Frank Ch. Eigler <fche@redhat.com> - 5.3-1
- Upstream release, see wiki page below for detailed notes.
https://sourceware.org/systemtap/wiki/SystemTapReleases
* Fri Nov 15 2024 Frank Ch. Eigler <fche@redhat.com> - 5.2-2 * Fri Nov 15 2024 Frank Ch. Eigler <fche@redhat.com> - 5.2-2
- RHEL-67586: supply /usr/bin/dtrace in sdt-devel subrpm too - RHEL-67586: supply /usr/bin/dtrace in sdt-devel subrpm too