0000000035703d9b: 00 00 00 00 00 00 0d 89 00 00 00 00 00 00 0d 8a  ................
000000006c4e9b24: 00 00 00 01 00 00 10 00 00 00 00 01 00 00 00 00  ................
000000006f1228c4: 00 00 03 5a b4 24 02 00 04 00 00 04 00 00 00 00  ...Z.$..........
00000000167108d4: 00 00 00 00 00 00 00 00 0c 09 0a 02 0c 00 00 00  ................
XFS (loop5): SB validate failed with error -117.
INFO: task syz-executor3:27893 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7-next-20181011+ #92
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D19680 27893   3036 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3480
 schedule+0xfe/0x460 kernel/sched/core.c:3524
 xlog_grant_head_wait+0x26b/0xf40 fs/xfs/xfs_log.c:263
 xlog_grant_head_check+0x4e7/0x560 fs/xfs/xfs_log.c:325
 xfs_log_reserve+0x3b1/0xd40 fs/xfs/xfs_log.c:454
 xfs_log_write_unmount_record+0x336/0xc30 fs/xfs/xfs_log.c:854
 xfs_log_unmount_write fs/xfs/xfs_log.c:953 [inline]
 xfs_log_quiesce+0x55c/0x660 fs/xfs/xfs_log.c:1020
 xfs_log_unmount+0x22/0xb0 fs/xfs/xfs_log.c:1034
 xfs_log_mount_cancel+0x44/0x60 fs/xfs/xfs_log.c:816
 xfs_mountfs+0x147f/0x1ef0 fs/xfs/xfs_mount.c:1064
 xfs_fs_fill_super+0xe60/0x1720 fs/xfs/xfs_super.c:1715
 mount_bdev+0x314/0x3e0 fs/super.c:1356
 xfs_fs_mount+0x3c/0x50 fs/xfs/xfs_super.c:1790
 legacy_get_tree+0x131/0x460 fs/fs_context.c:718
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1795
 do_new_mount fs/namespace.c:2648 [inline]
 do_mount+0x70c/0x1d90 fs/namespace.c:2974
 ksys_mount+0x12d/0x140 fs/namespace.c:3190
 __do_sys_mount fs/namespace.c:3204 [inline]
 __se_sys_mount fs/namespace.c:3201 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3201
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459f8a
Code: e9 0b 00 00 00 cc cc cc cc cc cc cc cc cc cc cc 8b 4c 24 20 48 83 f9 20 77 09 48 8d 05 ff 01 00 00 ff e0 48 83 f9 40 77 09 48 <8d> 05 70 02 00 00 ff e0 48 81 f9 80 00 00 00 77 09 48 8d 05 de 02
RSP: 002b:00007f37d713ba88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f37d713bb30 RCX: 0000000000459f8a
RDX: 00007f37d713bad0 RSI: 0000000020000040 RDI: 00007f37d713baf0
RBP: 0000000020000040 R08: 00007f37d713bb30 R09: 00007f37d713bad0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003
R13: 0000000000000000 R14: 00000000004d7e90 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc7-next-20181011+ #92
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+0x244/0x3ab lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0xb39/0x1050 kernel/hung_task.c:265
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57