INFO: task syz.7.877:13001 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.877       state:D stack:16936 pid:13001 tgid:13000 ppid:12471  task_flags:0x440140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 __bch2_two_state_lock+0x1ea/0x370
 bch2_readahead+0x94f/0x1100
 read_pages+0x17a/0x580
 page_cache_ra_order+0x8ca/0xd40
 filemap_get_pages+0xb22/0x1ea0
 filemap_splice_read+0x581/0xc60
 splice_direct_to_actor+0x4a9/0xcc0
 do_splice_direct+0x181/0x270
 vfs_copy_file_range+0xabc/0x1310
 __se_sys_copy_file_range+0x2fb/0x470
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3676f8ec29
RSP: 002b:00007f3677e31038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f36771d5fa0 RCX: 00007f3676f8ec29
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f3677011e41 R08: fffffbffa003e458 R09: 0700000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f36771d6038 R14: 00007f36771d5fa0 R15: 00007fffc7176e28
 </TASK>
INFO: task syz.7.877:13028 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.877       state:D stack:25480 pid:13028 tgid:13000 ppid:12471  task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 invalidate_inode_pages2_range+0x557/0xa80
 bch2_write_invalidate_inode_pages_range+0xc5/0x110
 bch2_direct_write+0x2a62/0x2ce0
 bch2_write_iter+0x18f/0x2b90
 do_iter_readv_writev+0x61c/0x8b0
 vfs_writev+0x31a/0x960
 do_writev+0x14d/0x2d0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3676f8ec29
RSP: 002b:00007f3677e10038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f36771d6090 RCX: 00007f3676f8ec29
RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000008
RBP: 00007f3677011e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f36771d6128 R14: 00007f36771d6090 R15: 00007fffc7176e28
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13a0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:4/3556:
 #0: ffff88801b33e148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900201ffbc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888120af00e0 (&type->s_umount_key#59){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
2 locks held by getty/5674:
 #0: ffff8880239030a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz.5.428/8898:
 #0: ffff888120af0428 (sb_writers#14){.+.+}-{0:0}, at: vfs_write+0x211/0xb30
1 lock held by syz.7.877/13001:
 #0: ffff88811a89d670 (mapping.invalidate_lock#13){.+.+}-{4:4}, at: page_cache_ra_order+0x318/0xd40
2 locks held by syz.7.877/13028:
 #0: ffff888107fa74f8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320
 #1: ffff888047c06428 (sb_writers#14){.+.+}-{0:0}, at: vfs_writev+0x288/0x960
1 lock held by syz.5.1152/16078:
 #0: ffff888120af00e0 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x25c/0x3b0
2 locks held by syz.1.1250/16811:
3 locks held by syz.0.1248/16818:
2 locks held by rm/16828:

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

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+0x439/0x7d0
 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: 5953 Comm: udevd 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:deref_stack_reg+0x1ae/0x230
Code: d8 0f 97 c1 4c 39 f0 0f 96 c0 20 c8 3c 01 75 30 4c 89 c7 49 89 f7 e8 11 08 00 00 49 89 c6 48 8b 5c 24 18 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 33 43 b0 00 4c 89 33 b0 01 eb 02
RSP: 0018:ffffc900046df100 EFLAGS: 00000a06
RAX: 1ffff920008dbe4d RBX: ffffc900046df268 RCX: 0000000000000001
RDX: ffffc900046df268 RSI: dffffc0000000000 RDI: ffffc900046dfd60
RBP: 1ffff920008dbe45 R08: ffffc900046dfd60 R09: 0000000000000000
R10: ffffc900046df278 R11: fffff520008dbe51 R12: 1ffff920008dbe46
R13: 1ffff920008dbe47 R14: 0000000000000003 R15: dffffc0000000000
FS:  00007f792e9c2c80(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5911701440 CR3: 000000010db4e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 unwind_next_frame+0x17c4/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __reset_page_owner+0x71/0x1f0
 free_unref_folios+0xdbd/0x1520
 folios_put_refs+0x559/0x640
 shmem_undo_range+0x49e/0x14b0
 shmem_evict_inode+0x272/0xa70
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 __fput+0x68e/0xa70
 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: 0033:0x7f792e5170a8
Code: 48 8b 05 83 9d 0d 00 64 c7 00 16 00 00 00 83 c8 ff 48 83 c4 20 5b c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 5b 48 8b 15 51 9d 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff35efc878 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007f792e9c2ae0 RCX: 00007f792e5170a8
RDX: 000055c7a5a7a6cf RSI: 00007fff35efc078 RDI: 0000000000000008
RBP: 000055c2f987e780 R08: 0000000000000006 R09: 4063afdf657add90
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000002
R13: 000055c2f991a650 R14: 0000000000000008 R15: 000055c2f985e910
 </TASK>
