INFO: task syz.5.2513:20582 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.2513      state:D stack:29064 pid:20582 tgid:20568 ppid:17574  task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x872/0xfe0
 down_write_nested+0x1b5/0x200
 do_unlinkat+0x1c7/0x560
 __x64_sys_unlinkat+0xd3/0xf0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb6a938ebe9
RSP: 002b:00007fb6a75d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007fb6a95b6090 RCX: 00007fb6a938ebe9
RDX: 0000000000000000 RSI: 0000200000000600 RDI: ffffffffffffff9c
RBP: 00007fb6a9411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb6a95b6128 R14: 00007fb6a95b6090 R15: 00007ffe97f3c268
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5285 Comm: klogd 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:kasan_check_range+0x1d8/0x2c0
Code: 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 8e 5d 59 09 cc 45 84 ff 75 63 41 f7 c7 00 ff 00
RSP: 0018:ffffc9000ac17d28 EFLAGS: 00000256
RAX: 1ffff110212d3301 RBX: 0000000000000010 RCX: ffffffff823b189d
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffff8881096998d0
RBP: 00000000000000ff R08: ffff8881096998df R09: 1ffff110212d331b
R10: dffffc0000000000 R11: ffffed10212d331c R12: ffff888109699bca
R13: 0000000000000004 R14: ffffed10212d331c R15: 1ffff110212d331a
FS:  00007f9eb05ec380(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e00686e950 CR3: 000000010efbc000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __asan_memset+0x22/0x50
 inode_init_always_gfp+0x99d/0xdc0
 alloc_inode+0x82/0x1b0
 __sock_create+0x12d/0x9f0
 __sys_socket+0xd7/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9eb074ebd7
Code: 73 01 c3 48 8b 0d 51 c2 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 21 c2 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd66aaa728 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 000000000000006f RCX: 00007f9eb074ebd7
RDX: 0000000000000000 RSI: 0000000000080002 RDI: 0000000000000001
RBP: 0000000000000002 R08: 0000000000000001 R09: 6c802922db3f4dd2
R10: 0000000000000008 R11: 0000000000000202 R12: 00007f9eb07dabc0
R13: 00007f9eb08dc212 R14: 00007ffd66aaa858 R15: 0000000000000000
 </TASK>
