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* INFO: trying to register non-static key in clear_inode
@ 2020-05-18 18:23 syzbot
  0 siblings, 0 replies; only message in thread
From: syzbot @ 2020-05-18 18:23 UTC (permalink / raw)
  To: linux-fsdevel, linux-kernel, syzkaller-bugs, viro


syzbot found the following crash on:

HEAD commit:    5a9ffb95 Merge tag '5.7-rc5-smb3-fixes' of git://git.samba..
git tree:       upstream
console output:
kernel config:
dashboard link:
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 235 Comm: kworker/u4:5 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_tcp_accept_worker
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 assign_lock_key kernel/locking/lockdep.c:913 [inline]
 register_lock_class+0x1664/0x1760 kernel/locking/lockdep.c:1225
 __lock_acquire+0x104/0x4c50 kernel/locking/lockdep.c:4234
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0x5b/0x80 kernel/locking/spinlock.c:167
 spin_lock_irq include/linux/spinlock.h:378 [inline]
 clear_inode+0x1b/0x1e0 fs/inode.c:529
 evict+0x4ee/0x650 fs/inode.c:579
 iput_final fs/inode.c:1572 [inline]
 iput+0x536/0x8c0 fs/inode.c:1598
 __sock_release+0x20c/0x280 net/socket.c:617
 rds_tcp_accept_one+0x582/0xb70 net/rds/tcp_listen.c:251
 rds_tcp_accept_worker+0x50/0x80 net/rds/tcp.c:525
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351

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