ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

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write_mft_record_nolock() maps the MFT record folio with
kmap_local_folio(), but the pre_write_mst_fixup() and
bio_add_folio() failure paths jump to the error label without
unmapping it. kmap_local mappings are stack-ordered per task, so
leaking one corrupts the nesting for any outer mapping.

Unmap the folio on those error paths too.

Fixes: 115380f9a2 ("ntfs: update mft operations")
Signed-off-by: Baolin Liu <liubaolin@kylinos.cn>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

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Baolin Liu 2026-08-21 13:32:36 +08:00 • committed by Namjae Jeon

parent ba1b61ddaa

commit cf06dcd572

1 changed files with 3 additions and 1 deletions

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fs/ntfs/mft.c

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