INFO: task syz.8.501:9729 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.501       state:D stack:27584 pid:9729  tgid:9727  ppid:9586   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x899/0x1040
 down_write+0x1bc/0x200
 process_measurement+0x451/0x1c80
 ima_file_check+0xe1/0x130
 security_file_post_open+0xb3/0x260
 path_openat+0x2e4d/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f082379c799
RSP: 002b:00007f08219d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0823a16090 RCX: 00007f082379c799
RDX: 000000000010b102 RSI: 0000200000000180 RDI: ffffffffffffff9c
RBP: 00007f0823832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000008e R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0823a16128 R14: 00007f0823a16090 R15: 00007fffbbdfb0a8
 </TASK>
INFO: task syz.8.501:9730 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.501       state:D stack:27560 pid:9730  tgid:9727  ppid:9586   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x899/0x1040
 down_write+0x1bc/0x200
 process_measurement+0x451/0x1c80
 ima_file_check+0xe1/0x130
 security_file_post_open+0xb3/0x260
 path_openat+0x2e4d/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f082379c799
RSP: 002b:00007f08219b4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0823a16180 RCX: 00007f082379c799
RDX: 0000000000143841 RSI: 0000200000000200 RDI: ffffffffffffff9c
RBP: 00007f0823832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000114 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0823a16218 R14: 00007f0823a16180 R15: 00007fffbbdfb0a8
 </TASK>
INFO: task syz.8.501:9731 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.501       state:D stack:27264 pid:9731  tgid:9727  ppid:9586   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x899/0x1040
 down_write+0x1bc/0x200
 process_measurement+0x451/0x1c80
 ima_file_check+0xe1/0x130
 security_file_post_open+0xb3/0x260
 path_openat+0x2e4d/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f082379c799
RSP: 002b:00007f0821591028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0823a16270 RCX: 00007f082379c799
RDX: 0000000000000b40 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f0823832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000048 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0823a16308 R14: 00007f0823a16270 R15: 00007fffbbdfb0a8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e520 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:1/37:
 #0: ffff88812103ade0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
 #1: ffff888121024588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880
 #2: ffffffff8e75e520 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa5/0x23c0
2 locks held by getty/5636:
 #0: ffff88816f1bd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
3 locks held by syz.8.501/9728:
1 lock held by syz.8.501/9729:
 #0: ffff88811998db60 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: process_measurement+0x451/0x1c80
1 lock held by syz.8.501/9730:
 #0: ffff88811998db60 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: process_measurement+0x451/0x1c80
2 locks held by syz.8.501/9731:
 #0: ffff8881714dc420 (sb_writers#15){++++}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88811998db60 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: process_measurement+0x451/0x1c80
1 lock held by syz-executor/12959:
 #0: ffff88823c52c0e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xa9/0xe0

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 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/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 9728 Comm: syz.8.501 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:lock_acquire+0xab/0x2e0
Code: 84 c1 00 00 00 65 8b 05 13 bb 7a 11 85 c0 0f 85 b2 00 00 00 65 48 8b 05 5b 75 7a 11 83 b8 54 0b 00 00 00 0f 85 9d 00 00 00 9c <5b> fa 48 c7 c7 a5 05 f1 8d e8 f7 e2 0c 0a 65 ff 05 e0 ba 7a 11 45
RSP: 0000:ffffc90006d1f950 EFLAGS: 00000246
RAX: ffff8881143a8000 RBX: ffff88811998d900 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8bb02467 RDI: 1ffff11023331b2e
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1023331b21 R12: 0000000000000001
R13: ffff88811998d970 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f08219f66c0(0000) GS:ffff8882a9460000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ed0dff000 CR3: 0000000115bce000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 down_read+0x47/0x2e0
 attr_data_get_block+0xc5/0x310
 ntfs_compress_write+0x5a6/0x1c80
 ntfs_file_write_iter+0x514/0x990
 vfs_write+0x61d/0xb90
 __x64_sys_pwrite64+0x199/0x230
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f082379c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f08219f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f0823a15fa0 RCX: 00007f082379c799
RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000005
RBP: 00007f0823832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008000c61 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0823a16038 R14: 00007f0823a15fa0 R15: 00007fffbbdfb0a8
 </TASK>
