INFO: task syz.5.2325:17950 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.2325      state:D stack:29064 pid:17950 tgid:17935 ppid:17680  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
 filename_create+0x1f8/0x3c0
 do_mkdirat+0xa0/0x590
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd77838ebe9
RSP: 002b:00007fd779186038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fd7785b6090 RCX: 00007fd77838ebe9
RDX: 000000000000003a RSI: 00002000000021c0 RDI: ffffffffffffff9c
RBP: 00007fd778411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd7785b6128 R14: 00007fd7785b6090 R15: 00007ffc8d849138
 </TASK>
INFO: task syz.5.2325:17959 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.2325      state:D stack:29064 pid:17959 tgid:17935 ppid:17680  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
 filename_create+0x1f8/0x3c0
 do_mkdirat+0xa0/0x590
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd77838d457
RSP: 002b:00007fd779164e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fd779164ef0 RCX: 00007fd77838d457
RDX: 00000000000001ff RSI: 0000200000000080 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000080
R13: 00007fd779164eb0 R14: 0000000000000000 R15: 0000000000000000
 </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: 22605 Comm: syz.7.2976 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:sha256_blocks_generic+0x9c2/0x1b70
Code: 00 00 44 89 e8 c1 c0 1a 44 89 e9 c1 c1 15 31 c1 44 89 e8 c1 c0 07 31 c8 45 89 df 41 31 f7 45 21 ef 41 31 f7 41 01 d7 41 01 c7 <44> 03 bb 20 22 e3 8b 44 03 bc 1c a0 01 00 00 4c 89 8c 24 70 01 00
RSP: 0018:ffffc9000333eb40 EFLAGS: 00000202
RAX: 000000001ca96f40 RBX: 00000000000000c0 RCX: 000000003475ccd2
RDX: 000000001a86020e RSI: 00000000c88b6200 RDI: 0000000000080000
RBP: ffffc9000333ee78 R08: dffffc0000000000 R09: 1ffffffff17c645c
R10: 000000001a86020e R11: 00000000e3afad64 R12: 00000000dd53c7ce
R13: 000000002451b947 R14: 000000005cfbf01e R15: 000000001fbb5c92
FS:  00007f9c66cd26c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f253bbbd000 CR3: 0000000038a24000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __sha256_update+0xf7/0x150
 crypto_sha256_update+0x27/0x40
 ima_calc_file_hash+0x8a0/0x16f0
 ima_collect_measurement+0x428/0x8e0
 process_measurement+0x1121/0x1a40
 ima_file_check+0xd7/0x120
 security_file_post_open+0xbb/0x290
 path_openat+0x2f26/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c65d8ebe9
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:00007f9c66cd2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9c65fb5fa0 RCX: 00007f9c65d8ebe9
RDX: 0000000000000042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f9c65e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9c65fb6038 R14: 00007f9c65fb5fa0 R15: 00007ffe2a88adf8
 </TASK>
