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fs/ntfs3: Additional check in ni_clear()

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[ Upstream commit d178944db36b3369b78a08ba520de109b89bf2a9 ]

Checking of NTFS_FLAGS_LOG_REPLAYING added to prevent access to
uninitialized bitmap during replay process.

Reported-by: syzbot+3bfd2cc059ab93efcdb4@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Konstantin Komarov 2024-09-09 15:39:10 +03:00 • committed by Greg Kroah-Hartman
parent 34e3220efd
commit 7a4ace681d
1 changed files with 3 additions and 1 deletions
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4
fs/ntfs3/frecord.c
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@ -102,7 +102,9 @@ void ni_clear(struct ntfs_inode *ni)
{ {
struct rb_node *node; struct rb_node *node;
if (!ni->vfs_inode.i_nlink && ni->mi.mrec && is_rec_inuse(ni->mi.mrec)) if (!ni->vfs_inode.i_nlink && ni->mi.mrec &&
is_rec_inuse(ni->mi.mrec) &&
!(ni->mi.sbi->flags & NTFS_FLAGS_LOG_REPLAYING))
ni_delete_all(ni); ni_delete_all(ni);
al_destroy(ni); al_destroy(ni);