block nbd5: Connection timed out
print_req_error: I/O error, dev nbd5, sector 0
block nbd5: Connection timed out
ldm_validate_partition_table(): Disk read failed.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 18552 at include/linux/blk-cgroup.h:354 blkg_lookup include/linux/blk-cgroup.h:291 [inline]
WARNING: CPU: 1 PID: 18552 at include/linux/blk-cgroup.h:354 blk_get_rl include/linux/blk-cgroup.h:432 [inline]
WARNING: CPU: 1 PID: 18552 at include/linux/blk-cgroup.h:354 blk_mq_bio_to_request+0x3b9/0x4f0 block/blk-mq.c:1621
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 18552 Comm: syz-executor.5 Not tainted 4.17.0-rc4+ #1
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+0x109/0x15a lib/dump_stack.c:113
 panic+0x1c6/0x36b kernel/panic.c:184
 __warn.cold.8+0x120/0x168 kernel/panic.c:536
 report_bug+0x1a4/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1df/0x330 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:blkg_get include/linux/blk-cgroup.h:354 [inline]
RIP: 0010:blk_get_rl include/linux/blk-cgroup.h:436 [inline]
RIP: 0010:blk_mq_bio_to_request+0x3b9/0x4f0 block/blk-mq.c:1621
RSP: 0018:ffff8800a59aecb8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8800a4081a40 RCX: ffffffff82d86cb7
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff880099ff4d00
RBP: ffff8800a59aece0 R08: ffffed00133fe9a1 R09: ffffed00133fe9a0
R10: ffffed00133fe9a0 R11: ffff880099ff4d03 R12: ffff880099ff4c00
R13: ffff880099ff4d00 R14: ffff8800a40184c0 R15: 0000000000000000
 blk_mq_make_request+0x518/0x2060 block/blk-mq.c:1852
 generic_make_request+0x50d/0xc20 block/blk-core.c:2447
 submit_bio+0x9f/0x400 block/blk-core.c:2555
 submit_bh_wbc+0x4d1/0x700 fs/buffer.c:3076
 submit_bh fs/buffer.c:3082 [inline]
 block_read_full_page+0x7b2/0xc30 fs/buffer.c:2287
 blkdev_readpage+0x13/0x20 fs/block_dev.c:571
 do_read_cache_page+0x5c6/0xf80 mm/filemap.c:2805
 read_cache_page+0x4b/0x80 mm/filemap.c:2893
 read_mapping_page include/linux/pagemap.h:402 [inline]
 read_dev_sector+0xc0/0x2e0 block/partition-generic.c:657
 read_part_sector block/partitions/check.h:38 [inline]
 adfspart_check_EESOX+0x10d/0x8f0 block/partitions/acorn.c:522
 check_partition+0x2ff/0x5c5 block/partitions/check.c:167
 rescan_partitions+0x199/0x860 block/partition-generic.c:521
 __blkdev_get+0x8e0/0x1190 fs/block_dev.c:1504
 blkdev_get+0x26b/0x880 fs/block_dev.c:1611
 blkdev_open+0x19f/0x200 fs/block_dev.c:1769
 do_dentry_open+0x5c5/0xe50 fs/open.c:784
 vfs_open+0xfc/0x240 fs/open.c:906
 do_last fs/namei.c:3365 [inline]
 path_openat+0xc02/0x3830 fs/namei.c:3501
 do_filp_open+0x177/0x250 fs/namei.c:3535
 do_sys_open+0x1dd/0x360 fs/open.c:1093
 __do_sys_open fs/open.c:1111 [inline]
 __se_sys_open fs/open.c:1106 [inline]
 __x64_sys_open+0x79/0xb0 fs/open.c:1106
 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413711
RSP: 002b:00007fb345f907a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413711
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fb345f90850
RBP: 000000000075bf20 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fb345f916d4
R13: 00000000004c8c9e R14: 00000000004dfb40 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..