diff --git a/bcc-0.25.0-Fix-a-llvm-signed-division-error-for-compactsnoop-to.patch b/bcc-0.25.0-Fix-a-llvm-signed-division-error-for-compactsnoop-to.patch new file mode 100644 index 0000000..4de2868 --- /dev/null +++ b/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 +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 +--- + 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 + diff --git a/bcc-0.25.0-Revert-tools-Fix-bindsnoop-for-kernel-v5.6.patch b/bcc-0.25.0-Revert-tools-Fix-bindsnoop-for-kernel-v5.6.patch new file mode 100644 index 0000000..517e550 --- /dev/null +++ b/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 +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 + diff --git a/bcc-0.25.0-tools-compactsnoop.py-Fix-raw_tracepoint-Invalid-arg.patch b/bcc-0.25.0-tools-compactsnoop.py-Fix-raw_tracepoint-Invalid-arg.patch new file mode 100644 index 0000000..c442033 --- /dev/null +++ b/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 +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 + 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 +--- + 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 + diff --git a/bcc.spec b/bcc.spec index 95de8a3..fbd600f 100644 --- a/bcc.spec +++ b/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 - 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