RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4386cbf6d4 R13: 00000000004c2f47 R14: 00000000004d6648 R15: 0000000000000009 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 32054 at block/genhd.c:732 __device_add_disk.cold+0x11/0x19e block/genhd.c:732 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 32054 Comm: syz-executor.0 Not tainted 5.3.0-rc5+ #139 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+0x2dc/0x755 kernel/panic.c:219 __warn.cold+0x20/0x4c kernel/panic.c:576 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:__device_add_disk.cold+0x11/0x19e block/genhd.c:732 Code: 41 bc f0 ff ff ff e8 ff c7 2c fe 48 8b 7d d0 e8 52 ed 7c fe e9 ba 7a ff ff e8 18 27 43 fe 48 c7 c7 40 c5 c4 87 e8 e0 c7 2c fe <0f> 0b e9 7b de ff ff e8 00 27 43 fe 48 c7 c7 40 c5 c4 87 e8 c8 c7 RSP: 0018:ffff88805ac37af8 EFLAGS: 00010286 RAX: 0000000000000024 RBX: 00000000fffffff4 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815c2526 RDI: ffffed100b586f51 RBP: ffff88805ac37c10 R08: 0000000000000024 R09: ffffed1015d060d1 R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff88805153e5c0 R13: ffff88805153e650 R14: ffff88805ac37be8 R15: ffff88805153e5c4 device_add_disk+0x2b/0x40 block/genhd.c:754 add_disk include/linux/genhd.h:429 [inline] loop_add+0x635/0x8d0 drivers/block/loop.c:2050 loop_control_ioctl drivers/block/loop.c:2151 [inline] loop_control_ioctl+0x165/0x360 drivers/block/loop.c:2133 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xdb6/0x13e0 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+0xfd/0x6a0 arch/x86/entry/common.c:296 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:00007f4386cbec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4386cbec90 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4386cbf6d4 R13: 00000000004c2f47 R14: 00000000004d6648 R15: 0000000000000009 Kernel Offset: disabled Rebooting in 86400 seconds..