WARNING: CPU: 0 PID: 19256 at kernel/locking/lockdep.c:1024 lockdep_register_key+0x10d/0x490 kernel/locking/lockdep.c:1024 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 19256 Comm: syz-executor.3 Not tainted 5.0.0+ #14 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+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x45 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:lockdep_register_key+0x10d/0x490 kernel/locking/lockdep.c:1024 Code: 75 23 e9 e5 01 00 00 48 89 da 48 c1 ea 03 42 80 3c 3a 00 0f 85 b1 02 00 00 48 8b 1b 48 85 db 0f 84 c7 01 00 00 4c 39 e3 75 dd <0f> 0b 48 c7 c0 98 4a 5d 89 48 ba 00 00 00 00 00 fc ff df 48 89 c1 RSP: 0018:ffff888057d7f720 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88809164de58 RCX: 1ffffffff12ba953 RDX: 1ffffffff1464f57 RSI: 0000000000000000 RDI: ffff88805c0f6e7c RBP: ffff888057d7f750 R08: ffffffff8a327ab8 R09: ffffed100afafed9 R10: ffffed100afafed8 R11: 0000000000000003 R12: ffff88809164de58 R13: 000000000000028b R14: 0000000000000282 R15: dffffc0000000000 wq_init_lockdep kernel/workqueue.c:3444 [inline] alloc_workqueue+0x427/0xe70 kernel/workqueue.c:4263 ucma_open+0x76/0x290 drivers/infiniband/core/ucma.c:1725 misc_open+0x398/0x4c0 drivers/char/misc.c:141 chrdev_open+0x247/0x6b0 fs/char_dev.c:417 do_dentry_open+0x488/0x1160 fs/open.c:771 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3416 [inline] path_openat+0x10e9/0x46e0 fs/namei.c:3532 do_filp_open+0x1a1/0x280 fs/namei.c:3562 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6bb9c8dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457f29 RDX: 0000000000000002 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6bb9c8e6d4 R13: 00000000004c41a6 R14: 00000000004d7758 R15: 00000000ffffffff Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..