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| author | Andrii Nakryiko <andrii@kernel.org> | 2023-10-16 20:28:40 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-10-17 11:43:20 +0200 |
| commit | 137df1189d128a6b5dee2f653e054b40ef36b94c (patch) | |
| tree | 63414cb538d83336a18287774f062f2f0df1eb2e /net/core | |
| parent | Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf... (diff) | |
| download | linux-137df1189d128a6b5dee2f653e054b40ef36b94c.tar.xz linux-137df1189d128a6b5dee2f653e054b40ef36b94c.zip | |
libbpf: Don't assume SHT_GNU_verdef presence for SHT_GNU_versym section
Fix too eager assumption that SHT_GNU_verdef ELF section is going to be
present whenever binary has SHT_GNU_versym section. It seems like either
SHT_GNU_verdef or SHT_GNU_verneed can be used, so failing on missing
SHT_GNU_verdef actually breaks use cases in production.
One specific reported issue, which was used to manually test this fix,
was trying to attach to `readline` function in BASH binary.
Fixes: bb7fa09399b9 ("libbpf: Support symbol versioning for uprobe")
Reported-by: Liam Wisehart <liamwisehart@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Manu Bretelle <chantr4@gmail.com>
Reviewed-by: Fangrui Song <maskray@google.com>
Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Link: https://lore.kernel.org/bpf/20231016182840.4033346-1-andrii@kernel.org
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions