RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00000000000003f7 R14: 00000000004c6b07 R15: 00007ff647a0f6d4
------------[ cut here ]------------
WARNING: CPU: 1 PID: 18057 at block/genhd.c:827 __device_add_disk+0xf3e/0x11a0 block/genhd.c:827
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 18057 Comm: syz-executor.4 Not tainted 5.7.0-syzkaller #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+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:105 [inline]
 fixup_bug arch/x86/kernel/traps.c:100 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:197
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:__device_add_disk+0xf3e/0x11a0 block/genhd.c:827
Code: f2 ff ff e8 84 92 e9 fd 0f 0b e9 ec f8 ff ff 48 89 7c 24 10 e8 73 92 e9 fd 0f 0b 48 8b 7c 24 10 e9 3b f5 ff ff e8 62 92 e9 fd <0f> 0b e9 75 fe ff ff e8 a6 91 ba fd 48 8b 7c 24 18 e8 ac a7 28 fe
RSP: 0018:ffffc900175d7cd8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90011fb5000
RDX: 0000000000040000 RSI: ffffffff838a3c5e RDI: 0000000000000005
RBP: ffff888086353000 R08: ffff888063546180 R09: ffffed1015ce7194
R10: ffff88804d3fa7c9 R11: ffffed1015ce7193 R12: 1ffff92002ebafa4
R13: ffff888086353638 R14: ffff8880863530a0 R15: ffff88804d3fa000
 add_disk include/linux/genhd.h:296 [inline]
 loop_add+0x616/0x8b0 drivers/block/loop.c:2168
 loop_control_ioctl drivers/block/loop.c:2269 [inline]
 loop_control_ioctl+0x153/0x340 drivers/block/loop.c:2251
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:771
 __do_sys_ioctl fs/ioctl.c:780 [inline]
 __se_sys_ioctl fs/ioctl.c:778 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:778
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45ca69
Code: 0d 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff647a0ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e8e80 RCX: 000000000045ca69
RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00000000000003f7 R14: 00000000004c6b07 R15: 00007ff647a0f6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..