RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 RBP: 00000000006dbc30 R08: 0000000000000002 R09: 0000000000003934 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c R13: 00007f9d13c33d90 R14: 0000000000000004 R15: 000000000000002d ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12322 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: 12322 Comm: syz-executor117 Not tainted 4.19.66 #40 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 7a e3 54 fe 48 c7 c7 40 e4 80 87 e8 e2 4a 3f fe <0f> 0b e9 02 de ff ff 48 8b bd 28 ff ff ff e8 5b 76 8b fe eb cd 48 RSP: 0018:ffff8880967a7b08 EFLAGS: 00010286 RAX: 0000000000000024 RBX: 00000000fffffff4 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8155d916 RDI: ffffed1012cf4f53 RBP: ffff8880967a7c18 R08: 0000000000000024 R09: ffffed1015d05079 R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff8880a47f8940 R13: ffff8880a47f89d0 R14: ffff8880967a7bf0 R15: ffff8880a47f8944 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: 0033:0x4467f9 Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 7b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9d13c33d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 00000000004467f9 RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 RBP: 00000000006dbc30 R08: 0000000000000002 R09: 0000000000003934 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c R13: 00007f9d13c33d90 R14: 0000000000000004 R15: 000000000000002d Kernel Offset: disabled Rebooting in 86400 seconds..