INFO: task syz-executor:5855 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:19768 pid:5855  tgid:5855  ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 __filemap_get_folio+0x139/0xaf0
 truncate_inode_pages_range+0x3ed/0xda0
 evict+0x517/0x9c0
 evict_inodes+0x64c/0x6d0
 generic_shutdown_super+0x9a/0x2c0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8bd7d8ff17
RSP: 002b:00007ffff2604c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f8bd7e11c05 RCX: 00007f8bd7d8ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffff2604d30
RBP: 00007ffff2604d30 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffff2605dc0
R13: 00007f8bd7e11c05 R14: 0000000000017e2d R15: 00007ffff2605e00
 </TASK>
INFO: task syz-executor:5862 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:17768 pid:5862  tgid:5862  ppid:1      task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 __filemap_get_folio+0x139/0xaf0
 truncate_inode_pages_range+0x3ed/0xda0
 evict+0x517/0x9c0
 evict_inodes+0x64c/0x6d0
 generic_shutdown_super+0x9a/0x2c0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec8eb8ff17
RSP: 002b:00007ffdb0891268 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fec8ec11c05 RCX: 00007fec8eb8ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb0891320
RBP: 00007ffdb0891320 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdb08923b0
R13: 00007fec8ec11c05 R14: 0000000000016a78 R15: 00007ffdb08923f0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5677:
 #0: ffff8881090020a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/5855:
 #0: ffff88810a42a0e0 (&type->s_umount_key#98){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
1 lock held by syz-executor/5862:
 #0: ffff88803a1400e0 (&type->s_umount_key#98){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
1 lock held by syz.6.752/9496:
 #0: ffff88803a1400e0 (&type->s_umount_key#98){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
3 locks held by syz.4.765/9542:

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

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: 9542 Comm: syz.4.765 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:try_charge_memcg+0x589/0x1290
Code: 03 42 80 3c 20 00 74 05 e8 74 84 f7 ff 48 c7 43 28 00 00 00 00 48 89 df 48 8b 74 24 20 e8 0f cd 71 ff 48 8b 84 24 98 00 00 00 <42> 0f b6 04 20 84 c0 0f 85 18 02 00 00 83 3d b3 1d 78 0d 00 74 22
RSP: 0018:ffffc900037576a0 EFLAGS: 00000282
RAX: 1ffffffff1f4778c RBX: ffff88804b03b400 RCX: 01626b637a327500
RDX: 0000000000000002 RSI: ffffffff8dba6ce5 RDI: ffffffff8be33680
RBP: ffffc90003757818 R08: 0000000000000000 R09: ffffffff822b9b3a
R10: dffffc0000000000 R11: fffff94000232a21 R12: dffffc0000000000
R13: 0000000000000040 R14: ffff88801b6f2840 R15: ffff88810e720000
FS:  00007f51585676c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f51513ff000 CR3: 0000000049bd2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 charge_memcg+0x9f/0x180
 __mem_cgroup_charge+0x25/0x80
 shmem_alloc_and_add_folio+0x7c1/0xf60
 shmem_get_folio_gfp+0x59d/0x1660
 shmem_write_begin+0xf7/0x2b0
 generic_perform_write+0x2c5/0x900
 shmem_file_write_iter+0xf8/0x120
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f515778d69f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f5158566df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000004000000 RCX: 00007f515778d69f
RDX: 0000000004000000 RSI: 00007f514d400000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000105a5
R10: 000020000003f382 R11: 0000000000000293 R12: 0000000000000004
R13: 00007f5158566ef0 R14: 00007f5158566eb0 R15: 00007f514d400000
 </TASK>
