------------[ cut here ]------------ WARNING: CPU: 0 PID: 27166 at kernel/locking/lockdep.c:853 look_up_lock_class kernel/locking/lockdep.c:853 [inline] WARNING: CPU: 0 PID: 27166 at kernel/locking/lockdep.c:853 register_lock_class+0x1f0/0x1630 kernel/locking/lockdep.c:1201 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 27166 Comm: syz-executor.3 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 panic+0x347/0x7c0 kernel/panic.c:231 __warn.cold+0x20/0x46 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:853 [inline] RIP: 0010:register_lock_class+0x1f0/0x1630 kernel/locking/lockdep.c:1201 Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 fd 0f 00 00 4d 3b 67 18 74 0b 49 81 3f 00 f5 ed 8b 74 02 <0f> 0b 85 ed 0f 84 b2 00 00 00 f6 44 24 04 01 0f 85 a7 00 00 00 83 RSP: 0018:ffffc9000736fa08 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 1ffff92000e6df48 RCX: ffffffff8c973160 RDX: 1ffff1100002107c RSI: 0000000000000000 RDI: ffff8880001083e0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1564d71 R11: 0000000000000000 R12: ffffffff88feb2e0 R13: ffffffff8d50cf60 R14: ffffffff8c62c520 R15: ffff8880001083c8 __lock_acquire+0xf9/0x5570 kernel/locking/lockdep.c:4305 lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:319 sock_orphan include/net/sock.h:1869 [inline] netlink_release+0x864/0x1cf0 net/netlink/af_netlink.c:742 __sock_release+0xcd/0x280 net/socket.c:596 sock_close+0x18/0x20 net/socket.c:1277 __fput+0x285/0x920 fs/file_table.c:281 task_work_run+0xdd/0x190 kernel/task_work.c:141 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:163 [inline] exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:190 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:265 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x416f01 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:000000000169fbe0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416f01 RDX: 0000000000000000 RSI: 000000000000068f RDI: 0000000000000003 RBP: 0000000000000001 R08: 00000000e63be68f R09: 00000000e63be693 R10: 000000000169fcd0 R11: 0000000000000293 R12: 000000000118d940 R13: 000000000118d940 R14: ffffffffffffffff R15: 000000000118cf4c Kernel Offset: disabled Rebooting in 86400 seconds..