INFO: task syz.1.113:6518 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.113       state:D stack:20080 pid:6518  tgid:6516  ppid:5844   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 __closure_sync+0x163/0x220
 bch2_set_nr_journal_buckets_loop+0x1338/0x1710
 bch2_dev_journal_alloc+0x175/0x2c0
 bch2_fs_journal_alloc+0x46d/0x4e0
 __bch2_run_recovery_passes+0x3bd/0x1060
 bch2_run_recovery_passes+0x184/0x210
 bch2_fs_recovery+0x2690/0x3a50
 bch2_fs_start+0xaaf/0xda0
 bch2_fs_get_tree+0xb39/0x1520
 vfs_get_tree+0x92/0x2b0
 do_new_mount+0x2a2/0x9e0
 __se_sys_mount+0x317/0x410
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc91699038a
RSP: 002b:00007fc91787ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc91787cef0 RCX: 00007fc91699038a
RDX: 00002000000058c0 RSI: 0000200000000000 RDI: 00007fc91787ceb0
RBP: 00002000000058c0 R08: 00007fc91787cef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007fc91787ceb0 R14: 0000000000005921 R15: 0000200000000240
 </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+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 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: 11406 Comm: syz-executor 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:unwind_next_frame+0x183c/0x2390
Code: 00 4d 8b 66 38 49 8d 7e 08 48 89 f8 48 c1 e8 03 80 3c 28 00 74 05 e8 63 3b b0 00 4d 8b 6e 08 4d 8d 7e 10 4c 89 f8 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 ff e8 46 3b b0 00 49 8b 07 4d 39 e5 0f 96
RSP: 0018:ffffc9000319f538 EFLAGS: 00000a06
RAX: 1ffff92000633ec3 RBX: ffffc9000319f601 RCX: 0000000000000000
RDX: ffffffff90377f96 RSI: 0000000000000000 RDI: ffffc9000319f610
RBP: dffffc0000000000 R08: ffffc9000319f667 R09: 0000000000000000
R10: ffffc9000319f658 R11: fffff52000633ecd R12: ffffc9000319fef0
R13: ffffc90003198000 R14: ffffc9000319f608 R15: ffffc9000319f618
FS:  0000555568183500(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f243a487e20 CR3: 000000010f33e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __reset_page_owner+0x71/0x1f0
 __free_frozen_pages+0xbc4/0xd30
 vfree+0x25a/0x400
 kcov_close+0x28/0x50
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f675e38e7eb
Code: Unable to access opcode bytes at 0x7f675e38e7c1.
RSP: 002b:00007fff247ab380 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffed RBX: 0000000000000005 RCX: 00007f675e38e7eb
RDX: 00007fff247ab3e0 RSI: 0000000000008933 RDI: 0000000000000005
RBP: 00007fff247ab3e0 R08: 0000000000000005 R09: 00007fff247ab412
R10: 00007fff247ab816 R11: 0000000000000246 R12: 00007fff247ab460
R13: 00007fff247ab550 R14: 00007f675f0e4620 R15: 00007fff247ab550
 </TASK>
