diff mbox series

[2/6] fs/ntfs3: Additional check in ni_clear()

Message ID 20241001090104.15313-3-almaz.alexandrovich@paragon-software.com (mailing list archive)
State New
Headers show
Series Syzbot bugfixes and refactoring | expand

Commit Message

Konstantin Komarov Oct. 1, 2024, 9:01 a.m. UTC 
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>
---
 fs/ntfs3/frecord.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 7d4e54161291..41c7ffad2790 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -102,7 +102,9 @@  void ni_clear(struct ntfs_inode *ni)
 {
 	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);
 
 	al_destroy(ni);