6.1-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ 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 --- fs/ntfs3/frecord.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c index e19510f977112..d41ddc06f2071 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);