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| author | Andrii Nakryiko <andriin@fb.com> | 2020-03-09 23:27:55 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-03-10 03:56:48 +0100 |
| commit | 62039c30c19dcab96621e074aeeb90da7100def7 (patch) | |
| tree | 7eaf14dc8ca1e1c1751eb54448f63f7ad35bc002 /kernel/uid16.c | |
| parent | selftests: bpf: Add test for JMP32 JSET BPF_X with upper bits set (diff) | |
| download | linux-62039c30c19dcab96621e074aeeb90da7100def7.tar.xz linux-62039c30c19dcab96621e074aeeb90da7100def7.zip | |
bpf: Initialize storage pointers to NULL to prevent freeing garbage pointer
Local storage array isn't initialized, so if cgroup storage allocation fails
for BPF_CGROUP_STORAGE_SHARED, error handling code will attempt to free
uninitialized pointer for BPF_CGROUP_STORAGE_PERCPU storage type. Avoid this
by always initializing storage pointers to NULLs.
Fixes: 8bad74f9840f ("bpf: extend cgroup bpf core to allow multiple cgroup storage types")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200309222756.1018737-1-andriin@fb.com
Diffstat (limited to 'kernel/uid16.c')
0 files changed, 0 insertions, 0 deletions