bpf: fix possible file descriptor leaks in verifier

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The resolve_pseudo_ldimm64() function might have leaked file
descriptors when BPF_MAP_TYPE_ARENA was used in a program (some
error paths missed a corresponding fdput). Add missing fdputs.

v2:
  remove unrelated changes from the fix

Fixes: 6082b6c328 ("bpf: Recognize addr_space_cast instruction in the verifier.")
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Link: https://lore.kernel.org/r/20240329071106.67968-1-aspsk@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Anton Protopopov 2024-03-29 07:11:06 +00:00 • committed by Alexei Starovoitov

parent 62248b22d0

commit 6dae957c8e

1 changed files with 3 additions and 0 deletions

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kernel/bpf/verifier.c

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