f2fs: fix to do sanity check in is_alive()

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In fuzzed image, SSA table may indicate that a data block belongs to
invalid node, which node ID is out-of-range (0, 1, 2 or max_nid), in
order to avoid migrating inconsistent data in such corrupted image,
let's do sanity check anyway before data block migration.

Cc: stable@vger.kernel.org
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Chao Yu 2021-12-06 22:44:21 +08:00 • committed by Jaegeuk Kim

parent f6db43076d

commit 77900c45ee

1 changed files with 3 additions and 0 deletions

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fs/f2fs/gc.c

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