INFO: task syz.4.86:6492 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.86        state:D stack:22304 pid:6492  tgid:6491  ppid:6110   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 lock_metapage+0x1ff/0x400
 __get_metapage+0x49a/0xe20
 xtSplitPage+0x281/0x2150
 xtSplitUp+0x33c/0x1fc0
 xtInsert+0x452/0xf20
 extAlloc+0xad9/0x1020
 jfs_get_block+0x358/0xad0
 __blockdev_direct_IO+0x161d/0x34e0
 jfs_direct_IO+0x119/0x220
 generic_file_direct_write+0x1db/0x3e0
 __generic_file_write_iter+0x11d/0x230
 generic_file_write_iter+0x14a/0x680
 iter_file_splice_write+0x9a1/0x10f0
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x53a/0xc70
 do_splice_direct+0x195/0x290
 do_sendfile+0x535/0x7d0
 __se_sys_sendfile64+0x144/0x1a0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f798879cdd9
RSP: 002b:00007f7989607028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f7988a15fa0 RCX: 00007f798879cdd9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: 00007f7988832d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7988a16038 R14: 00007f7988a15fa0 R15: 00007ffe0c424e18
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_exp_gp_kthr/18:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cda0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:2/68:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc9000179fc40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffffffff8fdd0140 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
4 locks held by kworker/u10:3/150:
 #0: ffff88816269f940 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc90003247c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffff88810c1c20d8 (&type->s_umount_key#111){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
 #3: ffff8881aaca6300 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530
1 lock held by dhcpcd/5353:
 #0: ffffffff8fdd0140 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x32b/0x1b30
2 locks held by getty/5440:
 #0: ffff8881721a00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000346b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
5 locks held by kworker/u8:2/5443:
 #0: ffff8881012b5940 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc9000279fc40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffffffff8fdc1488 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x800
 #3: ffffffff8fdd0140 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0xe5/0xa00
 #4: ffffffff8e9630a8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
4 locks held by syz.4.86/6492:
 #0: ffff88810c1c2410 (sb_writers#27){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff8881aaca66a0 (&sb->s_type->i_mutex_key#39){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680
 #2: ffff8881aaca6278 (&jfs_ip->rdwrlock#2){++++}-{4:4}, at: jfs_get_block+0x153/0xad0
 #3: ffff8881aaca6300 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: extAlloc+0x130/0x1020
2 locks held by syz-executor/10747:
 #0: ffffffff8f540948 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8fdd0140 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x883/0x1bb0
3 locks held by syz.6.538/10781:

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

NMI backtrace for cpu 0
CPU: 0 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+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd3/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 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: 10781 Comm: syz.6.538 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:arch_stack_walk+0xfb/0x150
Code: 48 8d bd 78 ff ff ff 4c 89 e6 4c 89 fa e8 ad 8b 09 00 83 bd 78 ff ff ff 00 74 38 4c 8d bd 78 ff ff ff 4c 89 ff e8 15 60 09 00 <48> 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 2e e8 c1 9e 3d 0a 84 c0
RSP: 0018:ffffc9000806f1a8 EFLAGS: 00000246
RAX: ffffffff8223433a RBX: ffffc9000806f260 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8e21c1f4 RDI: ffffffff8223433a
RBP: ffffc9000806f230 R08: ffffc9000806f518 R09: 0000000000000000
R10: ffffc9000806f1f8 R11: fffff5200100de41 R12: ffff88816990d880
R13: 1ffff1102d321bce R14: ffffffff81b0da30 R15: ffffc9000806f1a8
FS:  00007ff1470ca6c0(0000) GS:ffff8882a9290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555584a7fa68 CR3: 000000010da74000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __set_page_owner+0x8d/0x4c0
 post_alloc_hook+0x1f9/0x250
 get_page_from_freelist+0x24ba/0x2540
 __alloc_frozen_pages_noprof+0x18d/0x380
 alloc_pages_mpol+0x235/0x490
 folio_alloc_mpol_noprof+0x39/0x160
 shmem_alloc_and_add_folio+0x442/0xf80
 shmem_get_folio_gfp+0x5a9/0x1670
 shmem_write_begin+0x16c/0x330
 generic_perform_write+0x2e2/0x8f0
 shmem_file_write_iter+0xf8/0x120
 vfs_write+0x61d/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff14615d60e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ff1470c9da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff1470ca6c0 RCX: 00007ff14615d60e
RDX: 0000000001000000 RSI: 00007ff13be00000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007
R13: 00007ff1470c9ee0 R14: 00007ff1470c9ea0 R15: 00007ff13be00000
 </TASK>
