jfs: Regular file corruption check

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[ Upstream commit 2d04df8116 ]

The reproducer builds a corrupted file on disk with a negative i_size value.
Add a check when opening this file to avoid subsequent operation failures.

Reported-by: syzbot+630f6d40b3ccabc8e96e@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=630f6d40b3ccabc8e96e
Tested-by: syzbot+630f6d40b3ccabc8e96e@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Edward Adam Davis 2025-06-04 14:48:43 +08:00 • committed by Greg Kroah-Hartman

parent b5b471820c

commit 9605cb2ea3

1 changed files with 3 additions and 0 deletions

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fs/jfs/file.c

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