INFO: task syz.9.1061:13597 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.1061      state:D stack:28760 pid:13597 tgid:13595 ppid:13407  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x6ba/0x920
 down_read+0x9c/0x330
 super_lock+0x2d6/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x538/0x9a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa35479ce59
RSP: 002b:00007fa3556ac028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fa354a15fa0 RCX: 00007fa35479ce59
RDX: 000000003a736e6f RSI: 0000200000000040 RDI: ffffffff80000900
RBP: 00007fa354832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa354a16038 R14: 00007fa354a15fa0 R15: 00007ffed19b56c8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 19082 Comm: syz.5.1636 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:debug_check_no_obj_freed+0x166/0x450
Code: 0f 84 39 02 00 00 4d 89 fd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 08 4c 89 ff e8 fd f6 70 fd 49 8b 1f <4d> 8d 67 18 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0000:ffffc900046bf6d8 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff88810e1d5a48 RCX: 1ffffffff34d2cc5
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900046bf640
RBP: ffff88810be7d350 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520008d7ec8 R12: 0000000000000075
R13: 1ffff11022b317c7 R14: 0000000000000000 R15: ffff88811598be38
FS:  00007f3df607f6c0(0000) GS:ffff88818dc2d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555857daa68 CR3: 00000001b9138000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __free_frozen_pages+0x5cd/0xd10
 xlog_write_log_records+0x34f/0x3c0
 xlog_clear_stale_blocks+0x1d9/0x3c0
 xlog_find_tail+0x675/0x880
 xlog_recover+0x4b/0x3d0
 xfs_log_mount+0x253/0x3e0
 xfs_mountfs+0xedf/0x2380
 xfs_fs_fill_super+0x115a/0x15a0
 get_tree_bdev_flags+0x430/0x4f0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x319/0xdc0
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3df519e0ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3df607ee58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f3df607eee0 RCX: 00007f3df519e0ca
RDX: 0000200000009600 RSI: 0000200000000100 RDI: 00007f3df607eea0
RBP: 0000200000009600 R08: 00007f3df607eee0 R09: 0000000000200802
R10: 0000000000200802 R11: 0000000000000246 R12: 0000200000000100
R13: 00007f3df607eea0 R14: 0000000000009606 R15: 0000200000000180
 </TASK>
