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WARNING: CPU: 0 PID: 11358 at block/genhd.c:709 __device_add_disk.cold+0x156/0x18d block/genhd.c:709
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 11358 Comm: syz-executor.5 Not tainted 4.19.75 #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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x263/0x507 kernel/panic.c:185
 __warn.cold+0x20/0x4a kernel/panic.c:540
 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
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:__device_add_disk.cold+0x156/0x18d block/genhd.c:709
Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 25 41 8b 9c 24 b8 05 00 00 e9 70 d2 ff ff e8 ba be 54 fe 48 c7 c7 c0 e6 80 87 e8 92 25 3f fe <0f> 0b e9 02 de ff ff 48 8b bd 28 ff ff ff e8 fb 51 8b fe eb cd 48
RSP: 0018:ffff8880a777fb08 EFLAGS: 00010286
RAX: 0000000000000024 RBX: 00000000fffffff4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155dbd6 RDI: ffffed1014eeff53
RBP: ffff8880a777fc18 R08: 0000000000000024 R09: ffffed1015d05079
protocol 88fb is buggy, dev hsr_slave_0
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff88809f508e40
R13: ffff88809f508ed0 R14: ffff8880a777fbf0 R15: ffff88809f508e44
protocol 88fb is buggy, dev hsr_slave_1
 device_add_disk+0x23/0x30 block/genhd.c:729
 add_disk include/linux/genhd.h:408 [inline]
 loop_add+0x650/0x8d0 drivers/block/loop.c:2014
 loop_control_ioctl drivers/block/loop.c:2115 [inline]
 loop_control_ioctl+0x165/0x360 drivers/block/loop.c:2097
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a29
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
kobject: 'kvm' (00000000c6d53b55): kobject_uevent_env
RSP: 002b:00007f7ffa8ffc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7ffa8ffc90 RCX: 0000000000459a29
RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000006
kobject: 'kvm' (00000000c6d53b55): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7ffa9006d4
R13: 00000000004c3153 R14: 00000000004d6a90 R15: 0000000000000007
Kernel Offset: disabled
Rebooting in 86400 seconds..