INFO: task syz.5.265:7497 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.265       state:D stack:25256 pid:7497  tgid:7496  ppid:7348   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 sync_bdevs+0x1ac/0x340
 ksys_sync+0xb9/0x150
 __ia32_sys_sync+0xe/0x20
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6b3d58ebe9
RSP: 002b:00007f6b3e4be038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f6b3d7b5fa0 RCX: 00007f6b3d58ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6b3d7b5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6b3d7b6038 R14: 00007f6b3d7b5fa0 R15: 00007ffdaab5f098
 </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: 10173 Comm: syz.7.782 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:psi_account_irqtime+0x82/0x750
Code: 49 89 fe 48 89 df 49 89 f7 49 89 d5 e8 07 84 87 00 4c 89 ea 4c 89 f7 4c 89 fe eb bc f3 0f 1e fa 48 89 54 24 10 48 89 7c 24 18 <48> 89 74 24 08 48 c7 c0 a0 ee a6 92 48 c1 e8 03 42 0f b6 04 20 84
RSP: 0018:ffffc9000303f698 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801b71b980 RSI: ffff88801f75b980 RDI: ffff88804b039f80
RBP: ffffc9000303f918 R08: ffff88801f75b987 R09: 1ffff11003eeb730
R10: dffffc0000000000 R11: ffffed1003eeb731 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff88801f75bdc0
FS:  00007fc02dfb86c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000007000 CR3: 0000000131378000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __schedule+0x8f9/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 snd_rawmidi_write+0x3a8/0xbd0
 vfs_writev+0x4b6/0x960
 do_writev+0x14d/0x2d0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc02d18ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc02dfb8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fc02d3b5fa0 RCX: 00007fc02d18ebe9
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000007
RBP: 00007fc02d211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc02d3b6038 R14: 00007fc02d3b5fa0 R15: 00007fff4ba03f88
 </TASK>
