------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 9140 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:203 [inline] WARNING: CPU: 0 PID: 9140 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:192 [inline] WARNING: CPU: 0 PID: 9140 at kernel/locking/lockdep.c:203 check_wait_context kernel/locking/lockdep.c:4688 [inline] WARNING: CPU: 0 PID: 9140 at kernel/locking/lockdep.c:203 __lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4965 Modules linked in: CPU: 0 PID: 9140 Comm: syz-executor.5 Not tainted 5.14.0-next-20210901-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hlock_class kernel/locking/lockdep.c:203 [inline] RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4688 [inline] RIP: 0010:__lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4965 Code: 08 84 d2 0f 85 f1 3d 00 00 8b 05 8f 90 13 0c 85 c0 0f 85 f4 fd ff ff 48 c7 c6 20 02 8c 89 48 c7 c7 e0 f5 8b 89 e8 19 f1 94 07 <0f> 0b 31 ed e9 b7 f0 ff ff e8 7e 73 79 02 85 c0 0f 84 12 fe ff ff RSP: 0018:ffffc90017ecf850 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff88803dc393c8 RCX: 0000000000000000 RDX: ffff88803a9ed580 RSI: ffffffff815dba38 RDI: fffff52002fd9efc RBP: 0000000000000e8c R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815d581e R11: 0000000000000000 R12: ffff88803a9edfa8 R13: ffff88803a9ed580 R14: 0000000000040000 R15: 0000000000040e8c FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055656e037180 CR3: 000000000b68e000 CR4: 00000000001506f0 Call Trace: lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:324 sock_orphan include/net/sock.h:1903 [inline] nr_release+0xc2/0x450 net/netrom/af_netrom.c:521 __sock_release+0xcd/0x280 net/socket.c:649 sock_close+0x18/0x20 net/socket.c:1314 __fput+0x288/0x9f0 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xbae/0x2a30 kernel/exit.c:825 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x47f/0x2160 kernel/signal.c:2868 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: Unable to access opcode bytes at RIP 0x4665cf. RSP: 002b:00007f4e629e7218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056bf88 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf88 RBP: 000000000056bf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf8c R13: 00007ffe98cdff6f R14: 00007f4e629e7300 R15: 0000000000022000