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(parent: 5ca1ca0) | patch
bpf: Fix leak in LINK_UPDATE and enforce empty old_prog_fd
authorAndrii Nakryiko <andriin@fb.com>
Fri, 24 Apr 2020 05:20:44 +0000 (22:20 -0700)
committerAlexei Starovoitov <ast@kernel.org>
Sat, 25 Apr 2020 00:27:02 +0000 (17:27 -0700)
commit4adb7a4a151c65ac7e9c3a1aa462c84190d48385
tree776699a09bc08d7e2c68d409e67616827ad3a399tree | snapshot
parent5ca1ca01fae1e90f8d010eb1d83374f28dc11ee6commit | diff
bpf: Fix leak in LINK_UPDATE and enforce empty old_prog_fd

Fix bug of not putting bpf_link in LINK_UPDATE command.
Also enforce zeroed old_prog_fd if no BPF_F_REPLACE flag is specified.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200424052045.4002963-1-andriin@fb.com
kernel/bpf/syscall.c diff | blob | history
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