erofs: fix invalid algorithm for encoded extents

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The current algorithm sanity checks do not properly apply to new
encoded extents.

Unify the algorithm check with Z_EROFS_COMPRESSION(_RUNTIME)_MAX
and ensure consistency with sbi->available_compr_algs.

Reported-and-tested-by: syzbot+5a398eb460ddaa6f242f@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/r/68a8bd20.050a0220.37038e.005a.GAE@google.com
Fixes: 1d191b4ca5 ("erofs: implement encoded extent metadata")
Thanks-to: Edward Adam Davis <eadavis@qq.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

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This commit is contained in:

Gao Xiang 2025-08-24 23:11:57 +08:00

parent c17b750b3a

commit 131897c65e

1 changed files with 37 additions and 30 deletions

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fs/erofs/zmap.c

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