INFO: task syz.1.29:6170 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.29        state:D stack:17448 pid:6170  tgid:6169  ppid:5849   task_flags:0x440140 flags:0x00004004
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+0x43c/0x1ea0
 filemap_splice_read+0x581/0xc60
 splice_direct_to_actor+0x4a9/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feed4d8ebe9
RSP: 002b:00007feed5b90038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007feed4fb5fa0 RCX: 00007feed4d8ebe9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000009
RBP: 00007feed4e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000e3aa6ea R11: 0000000000000246 R12: 0000000000000000
R13: 00007feed4fb6038 R14: 00007feed4fb5fa0 R15: 00007fff41d6e138
 </TASK>
INFO: task syz.1.29:6197 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.29        state:D stack:18136 pid:6197  tgid:6169  ppid:5849   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 truncate_inode_pages_range+0xa77/0xda0
 bchfs_fallocate+0x2f4/0x680
 bch2_fallocate_dispatch+0x28a/0x410
 vfs_fallocate+0x669/0x7e0
 file_ioctl+0x611/0x780
 do_vfs_ioctl+0xb33/0x1430
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feed4d8ebe9
RSP: 002b:00007feed5b6f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007feed4fb6090 RCX: 00007feed4d8ebe9
RDX: 0000200000000180 RSI: 0000000040305839 RDI: 000000000000000a
RBP: 00007feed4e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feed4fb6128 R14: 00007feed4fb6090 R15: 00007fff41d6e138
 </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: ffff888109c890a0 (&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.1.29/6170:
 #0: ffff8881131e19b0 (mapping.invalidate_lock#6){.+.+}-{4:4}, at: page_cache_ra_order+0x318/0xd40
2 locks held by syz.1.29/6197:
 #0: ffff88810e798428 (sb_writers#13){.+.+}-{0:0}, at: vfs_fallocate+0x5f0/0x7e0
 #1: ffff8881131e1810 (&sb->s_type->i_mutex_key#21){++++}-{4:4}, at: bch2_fallocate_dispatch+0x10e/0x410
3 locks held by syz.3.457/9596:
2 locks held by syz.8.459/9599:
3 locks held by syz.7.455/9601:

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

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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9599 Comm: syz.8.459 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:__lock_acquire+0x50c/0xd20
Code: 49 83 c7 28 41 89 c4 48 39 cb 0f 8d d6 00 00 00 48 83 fb 31 0f 83 92 00 00 00 41 8b 07 25 ff 1f 00 00 48 0f a3 05 24 b0 0a 12 <73> 10 48 69 c0 c8 00 00 00 48 8d 88 10 13 49 93 eb 40 83 3d 8b 3f
RSP: 0018:ffffc9000323f2c8 EFLAGS: 00000003
RAX: 0000000000000037 RBX: 0000000000000002 RCX: 0000000000000003
RDX: 0000000000000003 RSI: 0000000000000004 RDI: ffff8880220db980
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff822e5f1a
R10: dffffc0000000000 R11: ffffed1025d759e9 R12: 0000000000000003
R13: 0000000000000001 R14: ffff8880220dc4e8 R15: ffff8880220dc4e0
FS:  00007f4ee63146c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffaf49ff000 CR3: 000000003dcfe000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x120/0x360
 pfn_valid+0xd6/0x490
 page_table_check_clear+0x21/0x700
 unmap_page_range+0x340f/0x4370
 unmap_vmas+0x399/0x580
 vms_clear_ptes+0x35c/0x540
 vms_complete_munmap_vmas+0x206/0x8a0
 do_vmi_align_munmap+0x358/0x420
 do_vmi_munmap+0x253/0x2e0
 __vm_munmap+0x23b/0x3d0
 __x64_sys_munmap+0x60/0x70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4ee558ec77
Code: 00 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4ee6313e18 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f4ee558ec77
RDX: 0000000000000000 RSI: 0000000008400000 RDI: 00007f4edb200000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000061f7
R10: 000000000000076e R11: 0000000000000246 R12: 0000000000000005
R13: 00007f4ee6313ef0 R14: 00007f4ee6313eb0 R15: 00007f4edb200000
 </TASK>
