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(parent: 6fdd671) | patch
bpf: Clear per_cpu pointers during bpf_prog_realloc
authorAlexei Starovoitov <ast@kernel.org>
Fri, 12 Feb 2021 03:35:00 +0000 (19:35 -0800)
committerAlexei Starovoitov <ast@kernel.org>
Fri, 12 Feb 2021 03:35:00 +0000 (19:35 -0800)
commit1336c662474edec3966c96c8de026f794d16b804
treed891b4d525f53a144fe35653153ba84127435b0ctree | snapshot
parent6fdd671baaf587cca17603485f9ef4bf7a1f9be1commit | diff
bpf: Clear per_cpu pointers during bpf_prog_realloc

bpf_prog_realloc copies contents of struct bpf_prog.
The pointers have to be cleared before freeing old struct.

Reported-by: Ilya Leoshkevich <iii@linux.ibm.com>
Fixes: 700d4796ef59 ("bpf: Optimize program stats")
Fixes: ca06f55b9002 ("bpf: Add per-program recursion prevention mechanism")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
kernel/bpf/core.c diff | blob | history
Domain: System / Kernel;