Rebuild bcc with llvm 16 and misc fixes

Fix compactsnoop
Fix Bindsnoop
Fix nfsslower

Resolves: rhbz#2042238
Resolves: rhbz#2155200
Resolves: rhbz#2155163
Resolves: rhbz#2192949

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>

bcc-0.25.0-Fix-a-llvm-signed-division-error-for-compactsnoop-to.patch

@@ -0,0 +1,42 @@
+From 0d563f713780eb274ebf995660917482452c127e Mon Sep 17 00:00:00 2001
+From: Yonghong Song <yhs@fb.com>
+Date: Fri, 26 Aug 2022 16:34:24 -0700
+Subject: [PATCH 1/2] Fix a llvm signed division error for compactsnoop tool
+
+Fix issue #4182.
+llvm doesn't support signed division and an assertion error
+will happen when the IR contains sdiv. The reason is
+due to code
+  zone - zone_pgdat->node_zones
+where zone and zone_pgdat->node_zones are pointers to
+struct zone (with size 1664). So effectively the above
+is equivalent to
+  ((void *)zone - (void *)zone_pgdat->node_zones)/sizeof(struct zone)
+which is converted to sdiv insn.
+llvm11 seems okay and I didn't investigate why. But llvm14 and
+latest llvm16 failed with compiler fatal error.
+
+To fix the issue let us replace the above '(void *)' as
+'(u64)' and then the udiv will be used for the division.
+
+Signed-off-by: Yonghong Song <yhs@fb.com>
+---
+ tools/compactsnoop.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tools/compactsnoop.py b/tools/compactsnoop.py
+index 9daaf485..bf3c9b4b 100755
+--- a/tools/compactsnoop.py
++++ b/tools/compactsnoop.py
+@@ -124,7 +124,7 @@ static inline int zone_idx_(struct zone *zone)
+ {
+     struct pglist_data *zone_pgdat = NULL;
+     bpf_probe_read_kernel(&zone_pgdat, sizeof(zone_pgdat), &zone->zone_pgdat);
+-    return zone - zone_pgdat->node_zones;
++    return ((u64)zone - (u64)zone_pgdat->node_zones)/sizeof(struct zone);
+ }
+ 
+ #ifdef EXTNEDED_FIELDS
+-- 
+2.39.2
+

bcc-0.25.0-Revert-tools-Fix-bindsnoop-for-kernel-v5.6.patch

@@ -0,0 +1,43 @@
+From 73b15c15bdf3327c86de524ded528c6c6061ff3d Mon Sep 17 00:00:00 2001
+From: Jerome Marchand <jmarchan@redhat.com>
+Date: Wed, 3 May 2023 16:16:52 +0200
+Subject: [PATCH] Revert "tools: Fix bindsnoop for kernel v5.6"
+
+This reverts commit f96fed0a3b9682ce52a35a02f72880395582d855.
+---
+ tools/bindsnoop.py | 10 +++-------
+ 1 file changed, 3 insertions(+), 7 deletions(-)
+
+diff --git a/tools/bindsnoop.py b/tools/bindsnoop.py
+index 07503352..ac3a8aa0 100755
+--- a/tools/bindsnoop.py
++++ b/tools/bindsnoop.py
+@@ -27,7 +27,7 @@
+ # 14-Feb-2020   Pavel Dubovitsky   Created this.
+ 
+ from __future__ import print_function, absolute_import, unicode_literals
+-from bcc import BPF
++from bcc import BPF, DEBUG_SOURCE
+ from bcc.containers import filter_by_containers
+ from bcc.utils import printb
+ import argparse
+@@ -243,14 +243,10 @@ static int bindsnoop_return(struct pt_regs *ctx, short ipver)
+     opts.fields.reuseport = bitfield >> 4 & 0x01;
+ 
+     // workaround for reading the sk_protocol bitfield (from tcpaccept.py):
+-    u16 protocol;
++    u8 protocol;
+     int gso_max_segs_offset = offsetof(struct sock, sk_gso_max_segs);
+     int sk_lingertime_offset = offsetof(struct sock, sk_lingertime);
+-
+-    // Since kernel v5.6 sk_protocol has its own u16 field
+-    if (sk_lingertime_offset - gso_max_segs_offset == 2)
+-        protocol = skp->sk_protocol;
+-    else if (sk_lingertime_offset - gso_max_segs_offset == 4)
++    if (sk_lingertime_offset - gso_max_segs_offset == 4)
+         // 4.10+ with little endian
+ #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+         protocol = *(u8 *)((u64)&skp->sk_gso_max_segs - 3);
+-- 
+2.40.1
+

bcc-0.25.0-tools-compactsnoop.py-Fix-raw_tracepoint-Invalid-arg.patch

@@ -0,0 +1,71 @@
+From 2fd4457e52d56825e12a4037630aea3f82241a02 Mon Sep 17 00:00:00 2001
+From: Rong Tao <rongtao@cestc.cn>
+Date: Fri, 10 Feb 2023 23:28:55 +0800
+Subject: [PATCH 2/2] tools/compactsnoop.py: Fix raw_tracepoint Invalid
+ argument error
+
+kernel commit abd4349ff9b8("mm: compaction: cleanup the compaction trace
+events") change the arguments of 'mm_compaction_begin' from (start_pfn,
+migrate_pfn, free_pfn, end_pfn, sync) to (cc, start_pfn, end_pfn, sync),
+and change the arguments of 'mm_compaction_end' from (start_pfn,
+migrate_pfn, free_pfn, end_pfn, sync, ret) to (cc, start_pfn, end_pfn,
+sync, ret).
+
+Replacing RAW_TRACEPOINT_PROBE with TRACEPOINT_PROBE solves this problem
+and guarantees compatibility.
+
+    $ sudo ./compactsnoop.py
+    bpf_attach_raw_tracepoint (mm_compaction_begin): Invalid argument
+    Traceback (most recent call last):
+    File "/home/sdb/Git/bcc/tools/./compactsnoop.py", line 292, in <module>
+    b = BPF(text=bpf_text)
+        ^^^^^^^^^^^^^^^^^^
+    File "/usr/lib/python3.11/site-packages/bcc/__init__.py", line 483, in __init__
+    self._trace_autoload()
+    File "/usr/lib/python3.11/site-packages/bcc/__init__.py", line 1462, in _trace_autoload
+    self.attach_raw_tracepoint(tp=tp, fn_name=fn.name)
+    File "/usr/lib/python3.11/site-packages/bcc/__init__.py", line 1055, in attach_raw_tracepoint
+    raise Exception("Failed to attach BPF to raw tracepoint")
+    Exception: Failed to attach BPF to raw tracepoint
+
+Signed-off-by: Rong Tao <rongtao@cestc.cn>
+---
+ tools/compactsnoop.py | 13 ++++---------
+ 1 file changed, 4 insertions(+), 9 deletions(-)
+
+diff --git a/tools/compactsnoop.py b/tools/compactsnoop.py
+index bf3c9b4b..e9baa9b4 100755
+--- a/tools/compactsnoop.py
++++ b/tools/compactsnoop.py
+@@ -237,11 +237,9 @@ RAW_TRACEPOINT_PROBE(mm_compaction_suitable)
+     return 0;
+ }
+ 
+-RAW_TRACEPOINT_PROBE(mm_compaction_begin)
++TRACEPOINT_PROBE(compaction, mm_compaction_begin)
+ {
+-    // TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
+-    //          unsigned long free_pfn, unsigned long zone_end, bool sync)
+-    bool sync = (bool)ctx->args[4];
++    bool sync = args->sync;
+ 
+     u64 id = bpf_get_current_pid_tgid();
+     struct val_t *valp = start.lookup(&id);
+@@ -255,12 +253,9 @@ RAW_TRACEPOINT_PROBE(mm_compaction_begin)
+     return 0;
+ }
+ 
+-RAW_TRACEPOINT_PROBE(mm_compaction_end)
++TRACEPOINT_PROBE(compaction, mm_compaction_end)
+ {
+-    // TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
+-    //          unsigned long free_pfn, unsigned long zone_end, bool sync,
+-    //          int status)
+-    submit_event(ctx, ctx->args[5]);
++    submit_event(args, args->status);
+     return 0;
+ }
+ """
+-- 
+2.39.2
+

bcc.spec

@@ -9,7 +9,7 @@
 
 Name:           bcc
 Version:        0.25.0
-Release:        2.0.2%{?dist}
+Release:        3%{?dist}
 Summary:        BPF Compiler Collection (BCC)
 License:        ASL 2.0
 URL:            https://github.com/iovisor/bcc
@@ -21,6 +21,10 @@ Patch3:         %{name}-%{version}-Fix-bpf_pseudo_fd-type-conversion-error.patch
 Patch4:         %{name}-%{version}-Fix-clang-15-int-to-pointer-conversion-errors.patch
 Patch5:         %{name}-%{version}-Revert-tools-tcpaccept-Fix-support-for-v5.6-kernels.patch
 Patch6:         %{name}-%{version}-Fix-get_kprobe_functions.patch
+Patch7:         %{name}-%{version}-Fix-a-llvm-signed-division-error-for-compactsnoop-to.patch
+Patch8:         %{name}-%{version}-tools-compactsnoop.py-Fix-raw_tracepoint-Invalid-arg.patch
+Patch9:         %{name}-%{version}-Revert-tools-Fix-bindsnoop-for-kernel-v5.6.patch
+Patch10:        %{name}-%{version}-tools-nfsslower.py-Fix-uninitialized-struct-pad-erro.patch
 
 # Arches will be included as upstream support is added and dependencies are
 # satisfied in the respective arches
@@ -218,6 +222,12 @@ done
 
 
 %changelog
+* Mon May 15 2023 Jerome Marchand <jmarchan@redhat.com> - 0.25.0-3
+- Rebuild with llvm 16 (RHBZ#2192949)
+- Fix compactsnoop (RHBZ#2042238)
+- Fix bindsnoop (RHBZ#2155200)
+- Fix nfsslower (RHBZ#2155163)
+
 * Fri Mar 03 2023 bstinson@redhat.com - 0.25.0-2.0.2
 - One final rebuild in CentOS Stream only