RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401770
R13: 0000000000401800 R14: 0000000000000000 R15: 0000000000000000
WARNING: CPU: 0 PID: 354 at block/genhd.c:741 __device_add_disk+0xeb3/0x1250 block/genhd.c:741
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 354 Comm: syz-executor303 Not tainted 5.4.82-syzkaller-00042-gd7ec680881a1 #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+0x1dd/0x24e lib/dump_stack.c:118
 panic+0x285/0x750 kernel/panic.c:221
 __warn+0x1fd/0x200 kernel/panic.c:582
 report_bug+0x390/0x4d0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap arch/x86/kernel/traps.c:272 [inline]
 do_invalid_op+0x6e/0x110 arch/x86/kernel/traps.c:291
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1029
RIP: 0010:__device_add_disk+0xeb3/0x1250 block/genhd.c:741
Code: ff e8 21 41 48 ff 0f 0b e9 97 fa ff ff e8 15 41 48 ff 0f 0b e9 df f2 ff ff e8 09 41 48 ff 0f 0b e9 66 f8 ff ff e8 fd 40 48 ff <0f> 0b e9 11 f7 ff ff e8 f1 40 48 ff 43 80 3c 2e 00 0f 85 04 ff ff
RSP: 0018:ffff8881e8a3fa00 EFLAGS: 00010293
RAX: ffffffff821aa4f3 RBX: 00000000ffffffef RCX: ffff8881e9970000
RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000
RBP: ffff8881e8a3fb40 R08: ffffffff821a9bfe R09: 0000000000000003
R10: ffffed103d147e4d R11: 0000000000000004 R12: ffff8881e8907000
R13: dffffc0000000000 R14: ffff8881e8907070 R15: 0000000000700000
 add_disk include/linux/genhd.h:444 [inline]
 loop_add+0x561/0x720 drivers/block/loop.c:2168
 loop_control_ioctl+0x566/0x7c0 drivers/block/loop.c:2291
 do_vfs_ioctl+0x769/0x1720 fs/ioctl.c:47
 ksys_ioctl fs/ioctl.c:714 [inline]
 __do_sys_ioctl fs/ioctl.c:721 [inline]
 __se_sys_ioctl fs/ioctl.c:719 [inline]
 __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:719
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x43fec9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 bb 46 00 00 c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe9c5d05f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fec9
RDX: 0000000000200000 RSI: 0000000000004c80 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401770
R13: 0000000000401800 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..