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WARNING: lock held when returning to user space!
4.18.0+ #199 Not tainted
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syz-executor4/28549 is leaving the kernel with locks still held!
1 lock held by syz-executor4/28549:
 #0: 0000000049c6eb82 (&fi->mutex){+.+.}, at: fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:363