INFO: task syz.0.14867:11126 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.14867     state:D stack:26808 pid:11126 tgid:11125 ppid:32647  task_flags:0x400140 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 __fuse_simple_request+0x121f/0x1c60
 fuse_flush+0x66a/0x8a0
 filp_flush+0xbd/0x190
 filp_close+0x1d/0x40
 __se_sys_close_range+0x372/0x670
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff9c59acb9
RSP: 002b:00007eff9d3aa028 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007eff9c815fa0 RCX: 00007eff9c59acb9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007eff9c608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007eff9c816038 R14: 00007eff9c815fa0 R15: 00007fffea1e05a8
 </TASK>
INFO: task syz.0.14867:11131 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.14867     state:D stack:27488 pid:11131 tgid:11125 ppid:32647  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 __fuse_simple_request+0x121f/0x1c60
 fuse_do_ioctl+0x11fd/0x1fc0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff9c59acb9
RSP: 002b:00007eff9d389028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007eff9c816090 RCX: 00007eff9c59acb9
RDX: 0000000000000000 RSI: 0000000000004b70 RDI: 0000000000000006
RBP: 00007eff9c608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007eff9c816128 R14: 00007eff9c816090 R15: 00007fffea1e05a8
 </TASK>

Showing all locks held in the system:
2 locks held by ksoftirqd/0/15:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5662:
 #0: ffff88817147f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000357b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
1 lock held by syz.6.5917/21906:
 #0: ffff88816e1fb100 (&acct->lock#3){+.+.}-{4:4}, at: acct_pin_kill+0x2f/0x140
2 locks held by syz.7.16853/15719:
9 locks held by syz-executor/16614:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 21906 Comm: syz.6.5917 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:unwind_get_return_address+0x56/0x90
Code: 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 74 08 48 89 df e8 cb 6c b5 00 48 8b 3b e8 83 11 19 00 85 c0 74 14 43 80 3c 37 00 <74> 08 48 89 df e8 b0 6c b5 00 48 8b 03 eb 02 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc900073f6c68 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffc900073f6cd0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8dd3bb1a RDI: ffffffff8242a348
RBP: ffffc900073f6d10 R08: ffffc900073f78f0 R09: 0000000000000000
R10: ffffc900073f6cd8 R11: fffff52000e7ed9d R12: ffff88816ce88000
R13: 1ffff1102d9d10ba R14: dffffc0000000000 R15: 1ffff92000e7ed9a
FS:  00000000fff88a7b(0000) GS:ffff88818e321000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559f4a4e0950 CR3: 000000017538a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 arch_stack_walk+0xfb/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __reset_page_owner+0x71/0x1f0
 free_unref_folios+0xda7/0x14d0
 folios_put_refs+0x58a/0x680
 shmem_undo_range+0x52c/0x1660
 shmem_evict_inode+0x240/0x9e0
 evict+0x61e/0xb10
 __dentry_kill+0x209/0x660
 shrink_kill+0xa9/0x2c0
 shrink_dentry_list+0x2e0/0x5e0
 shrink_dcache_tree+0xcf/0x310
 do_one_tree+0x28/0xe0
 shrink_dcache_for_umount+0xa0/0x170
 generic_shutdown_super+0x67/0x2c0
 kill_anon_super+0x3b/0x70
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 do_exit+0x69b/0x2310
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 00fb:0x294e66b3c7c44cb4
Code: Unable to access opcode bytes at 0x294e66b3c7c44c8a.
RSP: 08b7:0000000000000000 EFLAGS: 00000312 ORIG_RAX: ce3d5c200518e753
RAX: 6d02b596a6d6b2c6 RBX: 46b00e13ac8c17fa RCX: 1d6d567492f1521e
RDX: eb30e365dd53f3a0 RSI: c553273f825e1cf7 RDI: b331ef28487276fd
RBP: 9c8c87e20081ee76 R08: cf9d780a350b4549 R09: c7e58b697db8ef3d
R10: d68d02d45a22dc24 R11: 19b4d49ef33da9ed R12: 39cb75b6fa6cb3d1
R13: a8d7b5dbf29d588f R14: 9b8908dcbb4f02b4 R15: 107b9d1451766018
 </TASK>
