RAX: ffffffffffffffda RBX: 00007fc45d3b7c90 RCX: 0000000000457e39
RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000004
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc45d3b86d4
R13: 00000000004c10ef R14: 00000000004d2f38 R15: 0000000000000005
WARNING: CPU: 0 PID: 17801 at block/genhd.c:717 __device_add_disk+0xef6/0x1160 block/genhd.c:717
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 17801 Comm: syz-executor.0 Not tainted 5.0.0-rc5+ #63
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:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:__device_add_disk+0xef6/0x1160 block/genhd.c:717
Code: 80 2b 53 fe 0f 0b e9 98 fb ff ff 48 89 bd 18 ff ff ff e8 6d 2b 53 fe 0f 0b 48 8b bd 18 ff ff ff e9 bf f7 ff ff e8 5a 2b 53 fe <0f> 0b e9 80 fe ff ff e8 5e 75 26 fe 4c 89 e7 e8 46 27 8a fe e9 45
RSP: 0018:ffff888071177af8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888071177be8 RCX: ffffc90006271000
RDX: 0000000000040000 RSI: ffffffff831cafc6 RDI: 0000000000000005
RBP: ffff888071177c10 R08: ffff8880406ee100 R09: ffffed1015d05bd0
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: ffff88805cf2cd00
R13: ffff88805cf2cd90 R14: 00000000fffffff4 R15: 0000000000000000
 device_add_disk+0x2b/0x40 block/genhd.c:739
 add_disk include/linux/genhd.h:422 [inline]
 loop_add+0x635/0x8d0 drivers/block/loop.c:1999
 loop_control_ioctl drivers/block/loop.c:2100 [inline]
 loop_control_ioctl+0x165/0x360 drivers/block/loop.c:2082
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e39
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:00007fc45d3b7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc45d3b7c90 RCX: 0000000000457e39
RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000004
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc45d3b86d4
R13: 00000000004c10ef R14: 00000000004d2f38 R15: 0000000000000005
Kernel Offset: disabled
Rebooting in 86400 seconds..