loop0: p1 loop1: p1 loop_reread_partitions: partition scan of loop3 () failed (rc=-16) Unknown ioctl 19276 WARNING: CPU: 0 PID: 23611 at fs/block_dev.c:1788 __blkdev_put+0x688/0x830 fs/block_dev.c:1788 kobject: 'loop2' (000000005de1cfdf): kobject_uevent_env Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 23611 Comm: syz-executor1 Not tainted 4.19.0-rc6+ #270 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+0x1c4/0x2b4 lib/dump_stack.c:113 kobject: 'loop2' (000000005de1cfdf): fill_kobj_path: path = '/devices/virtual/block/loop2' panic+0x238/0x4e7 kernel/panic.c:184 __warn.cold.8+0x163/0x1ba kernel/panic.c:536 report_bug+0x254/0x2d0 lib/bug.c:186 kobject: 'loop5' (000000002c42f3e9): kobject_uevent_env fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 kobject: 'loop5' (000000002c42f3e9): fill_kobj_path: path = '/devices/virtual/block/loop5' invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993 RIP: 0010:__blkdev_put+0x688/0x830 fs/block_dev.c:1788 Code: ff ff ff ba 01 00 00 00 4c 89 e7 e8 92 f9 ff ff e9 79 fd ff ff 48 c7 85 50 ff ff ff 08 00 00 00 e9 7f fb ff ff e8 28 63 9e ff <0f> 0b e9 0e fb ff ff e8 1c 63 9e ff 48 8b bd 48 ff ff ff 48 c7 83 RSP: 0018:ffff880186a1fa38 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff8801d4bb9380 RCX: ffffc90003e6e000 RDX: 000000000001407c RSI: ffffffff81e07268 RDI: 0000000000000005 kobject: 'loop1' (00000000d5a9ae3e): kobject_uevent_env RBP: ffff880186a1fb30 R08: ffff880129c66200 R09: ffffed003a977273 R10: ffff880186a1fa28 R11: ffff8801d4bb939f R12: ffff8801d4bb9384 R13: 0000000000000001 R14: ffff8801d239b640 R15: ffffffff81e07950 kobject: 'loop1' (00000000d5a9ae3e): fill_kobj_path: path = '/devices/virtual/block/loop1' blkdev_put+0x98/0x540 fs/block_dev.c:1858 blkdev_close+0x8b/0xb0 fs/block_dev.c:1865 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411051 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fa675d8ca10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fa675d8d6d4 RCX: 0000000000411051 RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000c R10: 0000000000000064 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000004 R14: 0000000000000005 R15: 0000000000000001 Kernel Offset: disabled Rebooting in 86400 seconds..