From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ Upstream commit bfbe5b31caa74ab97f1784fe9ade5f45e0d3de91 ]
Reported-by: syzbot+e94d98936a0ed08bde43@syzkaller.appspotmail.com Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/fsntfs.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c index e32a678861ffe..4413f6da68e60 100644 --- a/fs/ntfs3/fsntfs.c +++ b/fs/ntfs3/fsntfs.c @@ -2451,10 +2451,12 @@ void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim) { CLST end, i; struct wnd_bitmap *wnd = &sbi->used.bitmap; + bool dirty = false;
down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS); if (!wnd_is_used(wnd, lcn, len)) { - ntfs_set_state(sbi, NTFS_DIRTY_ERROR); + /* mark volume as dirty out of wnd->rw_lock */ + dirty = true;
end = lcn + len; len = 0; @@ -2486,6 +2488,8 @@ void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim)
out: up_write(&wnd->rw_lock); + if (dirty) + ntfs_set_state(sbi, NTFS_DIRTY_ERROR); }
/*