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| author | Toke Høiland-Jørgensen <toke@redhat.com> | 2021-09-01 14:48:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-18 21:16:22 +0300 |
| commit | 9fc04208643f8ccedf1195e41f9c26ca9621bb90 (patch) | |
| tree | 5bdbba1e2c35e648c96bc1df81957e00f36dd98d /security | |
| parent | 11080de0a75cba7e00c1060d60ea484615d7a3d3 (diff) | |
| download | linux-9fc04208643f8ccedf1195e41f9c26ca9621bb90.tar.xz | |
libbpf: Don't crash on object files with no symbol tables
[ Upstream commit 03e601f48b2da6fb44d0f7b86957a8f6bacfb347 ]
If libbpf encounters an ELF file that has been stripped of its symbol
table, it will crash in bpf_object__add_programs() when trying to
dereference the obj->efile.symbols pointer.
Fix this by erroring out of bpf_object__elf_collect() if it is not able
able to find the symbol table.
v2:
- Move check into bpf_object__elf_collect() and add nice error message
Fixes: 6245947c1b3c ("libbpf: Allow gaps in BPF program sections to support overriden weak functions")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210901114812.204720-1-toke@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions