WARNING: CPU: 1 PID: 14568 at kernel/locking/lockdep.c:698 arch_local_save_flags arch/x86/include/asm/paravirt.h:783 [inline]
WARNING: CPU: 1 PID: 14568 at kernel/locking/lockdep.c:698 arch_local_save_flags arch/x86/include/asm/paravirt.h:781 [inline]
WARNING: CPU: 1 PID: 14568 at kernel/locking/lockdep.c:698 look_up_lock_class kernel/locking/lockdep.c:689 [inline]
WARNING: CPU: 1 PID: 14568 at kernel/locking/lockdep.c:698 register_lock_class+0xfeb/0x1cf0 kernel/locking/lockdep.c:748
Kernel panic - not syncing: panic_on_warn set ...

kobject: 'loop5' (000000004e2d52cd): kobject_uevent_env
CPU: 1 PID: 14568 Comm: syz-executor.1 Not tainted 4.19.60 #33
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
kobject: 'loop5' (000000004e2d52cd): fill_kobj_path: path = '/devices/virtual/block/loop5'
 panic+0x263/0x507 kernel/panic.c:185
 __warn.cold+0x20/0x4a kernel/panic.c:540
kobject: 'loop5' (000000004e2d52cd): kobject_uevent_env
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
kobject: 'loop5' (000000004e2d52cd): fill_kobj_path: path = '/devices/virtual/block/loop5'
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1035
RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:698 [inline]
RIP: 0010:register_lock_class+0xfeb/0x1cf0 kernel/locking/lockdep.c:748
Code: 60 48 89 da 4d 8b 75 c0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 fe 05 00 00 4c 89 33 e9 1b f3 ff ff 0f 0b <0f> 0b e9 0d f2 ff ff 44 89 e0 4c 8b 85 48 ff ff ff 83 c0 01 4c 8b
kobject: 'loop5' (000000004e2d52cd): kobject_uevent_env
RSP: 0018:ffff888082a2f550 EFLAGS: 00010083
RAX: dffffc0000000000 RBX: ffff8880855071a0 RCX: 0000000000000000
RDX: 1ffff11010aa0e37 RSI: 0000000000000000 RDI: ffff8880855071b8
RBP: ffff888082a2f620 R08: 1ffff11010545eb3 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff89eec870
R13: 0000000000000000 R14: ffffffff87dd29c0 R15: dffffc0000000000
kobject: 'loop5' (000000004e2d52cd): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __lock_acquire+0x154/0x48f0 kernel/locking/lockdep.c:3299
kobject: 'loop5' (000000004e2d52cd): kobject_uevent_env
kobject: 'loop5' (000000004e2d52cd): fill_kobj_path: path = '/devices/virtual/block/loop5'
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
kobject: 'loop5' (000000004e2d52cd): kobject_uevent_env
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x33/0x50 kernel/locking/spinlock.c:168
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 lock_sock_nested+0x41/0x120 net/core/sock.c:2833
 lock_sock include/net/sock.h:1501 [inline]
 do_ipv6_setsockopt.isra.0+0x273/0x3eb0 net/ipv6/ipv6_sockglue.c:167
kobject: 'loop5' (000000004e2d52cd): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (000000005cfbfc7f): kobject_uevent_env
kobject: 'loop0' (000000005cfbfc7f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (000000004e2d52cd): kobject_uevent_env
kobject: 'loop5' (000000004e2d52cd): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (000000005cfbfc7f): kobject_uevent_env
kobject: 'loop0' (000000005cfbfc7f): fill_kobj_path: path = '/devices/virtual/block/loop0'
 ipv6_setsockopt+0xf6/0x170 net/ipv6/ipv6_sockglue.c:933
 udpv6_setsockopt+0x68/0xb0 net/ipv6/udp.c:1492
 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3041
 __sys_setsockopt+0x17a/0x280 net/socket.c:1901
kobject: 'loop4' (00000000198c32a5): kobject_uevent_env
 __do_sys_setsockopt net/socket.c:1912 [inline]
 __se_sys_setsockopt net/socket.c:1909 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
kobject: 'loop4' (00000000198c32a5): fill_kobj_path: path = '/devices/virtual/block/loop4'
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f80c1378c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829
RDX: 0000000000000023 RSI: 0000000000000029 RDI: 0000000000000006
kobject: 'loop2' (0000000028a5eabb): kobject_uevent_env
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f80c13796d4
R13: 00000000004ced30 R14: 00000000004dd678 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..