INFO: task syz.8.884:9388 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.884       state:D stack:23240 pid:9388  tgid:9387  ppid:9196   task_flags:0x400140 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 lock_metapage+0x1f3/0x400
 __get_metapage+0x497/0xde0
 xtSplitPage+0x284/0x21a0
 xtSplitUp+0x31b/0x1f40
 xtInsert+0x415/0xe30
 extAlloc+0xa9a/0xfb0
 jfs_get_block+0x346/0xab0
 __blockdev_direct_IO+0x16ff/0x3490
 jfs_direct_IO+0x119/0x220
 generic_file_direct_write+0x1db/0x3e0
 __generic_file_write_iter+0x11d/0x230
 generic_file_write_iter+0x117/0x550
 iter_file_splice_write+0x975/0x10e0
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x5a8/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f150db8f749
RSP: 002b:00007f150eaf8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f150dde5fa0 RCX: 00007f150db8f749
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f150dc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f150dde6038 R14: 00007f150dde5fa0 R15: 00007ffc09a8d548
 </TASK>

Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
 #0: ffffffff8df43178 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730
4 locks held by kworker/u8:1/13:
4 locks held by kworker/u9:1/32:
 #0: ffff888163edf948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90000a77ba0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888118aea0e0 (&type->s_umount_key#74){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
 #3: ffff8881171f2f90 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530
1 lock held by khungtaskd/34:
 #0: ffffffff8df3d6e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:4/3412:
 #0: ffff888100089948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900226dfba0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f2cbd48 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
2 locks held by dhcpcd/5558:
 #0: ffff8881111386e8 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: netlink_dump+0xbd/0xe90
 #1: ffffffff8f2cbd48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200
2 locks held by getty/5641:
 #0: ffff8881130a40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000357b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
4 locks held by syz.8.884/9388:
 #0: ffff8881aa054420 (sb_writers#21){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff88811dd47358 (&sb->s_type->i_mutex_key#36){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550
 #2: ffff88811dd46f18 (&jfs_ip->rdwrlock#3){++++}-{4:4}, at: jfs_get_block+0x141/0xab0
 #3: ffff88811dd46fa8 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: extAlloc+0x13c/0xfb0
4 locks held by syz.1.1545/12054:
 #0: ffff888118aea420 (sb_writers#21){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff8881171f3340 (&sb->s_type->i_mutex_key#36){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550
 #2: ffff8881171f2f00 (&jfs_ip->rdwrlock#3){++++}-{4:4}, at: jfs_get_block+0x141/0xab0
 #3: ffff8881171f2f90 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: extAlloc+0x13c/0xfb0
2 locks held by syz.5.2138/14146:
 #0: ffff888118aea0e0 (&type->s_umount_key#74){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
 #1: ffff88816cc02820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x19f/0xa10
1 lock held by syz-executor/14680:
 #0: ffffffff8f2cbd48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8e9/0x1c80
2 locks held by syz.6.2194/14718:

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

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+0xf60/0xfa0
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 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: 14718 Comm: syz.6.2194 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:kasan_check_range+0x1d8/0x2c0
Code: 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 ce b5 23 09 cc 45 84 ff 75 63 41 f7 c7 00 ff 00
RSP: 0018:ffffc900089ef818 EFLAGS: 00000256
RAX: 0000000000000001 RBX: ffff8881132eb3c0 RCX: ffffffff819dfa2d
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881132eb3c0
RBP: ffffc900089ef9d0 R08: ffff8881132eb3c3 R09: 1ffff1102265d678
R10: dffffc0000000000 R11: ffffed102265d679 R12: dffffc0000000000
R13: ffffea0000801300 R14: ffffed102265d679 R15: 1ffff1102265d678
FS:  00007fb1744476c0(0000) GS:ffff88818eb3b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb16a1ff000 CR3: 0000000118cbe000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 do_raw_spin_unlock+0x4d/0x240
 _raw_spin_unlock+0x1e/0x50
 shmem_alloc_and_add_folio+0xc8e/0xf40
 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/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb17358e1ff
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:00007fb174446df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007fb17358e1ff
RDX: 0000000001000000 RSI: 00007fb169200000 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000005108
R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000005
R13: 00007fb174446ef0 R14: 00007fb174446eb0 R15: 00007fb169200000
 </TASK>
