INFO: task syz-executor164:5098 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor164 state:D stack:13808 pid:5098  tgid:5098  ppid:5097   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 __closure_sync+0x259/0x2f0 lib/closure.c:146
 closure_sync include/linux/closure.h:195 [inline]
 bch2_extent_fallocate+0x1716/0x2030 fs/bcachefs/io_misc.c:129
 __bchfs_fallocate fs/bcachefs/fs-io.c:673 [inline]
 bchfs_fallocate fs/bcachefs/fs-io.c:736 [inline]
 bch2_fallocate_dispatch+0x1f9a/0x3810 fs/bcachefs/fs-io.c:783
 vfs_fallocate+0x564/0x6c0 fs/open.c:330
 do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886
 __do_sys_ioctl fs/ioctl.c:905 [inline]
 __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d8c177b19
RSP: 002b:00007ffec59f2248 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8d8c177b19
RDX: 0000000020000180 RSI: 0000000040305839 RDI: 0000000000000004
RBP: 00007f8d8c1fc5f0 R08: 0000555585dd34c0 R09: 0000555585dd34c0
R10: 00000000000119fe R11: 0000000000000246 R12: 00007ffec59f2270
R13: 00007ffec59f2498 R14: 431bde82d7b634db R15: 00007f8d8c1c003b
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4837:
 #0: ffff88802c8a00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by syz-executor164/5098:
 #0: ffff88807e618420 (sb_writers#9){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
 #0: ffff88807e618420 (sb_writers#9){.+.+}-{0:0}, at: vfs_fallocate+0x4d3/0x6c0 fs/open.c:329
 #1: ffff88807ca188b8 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff88807ca188b8 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: bch2_fallocate_dispatch+0x295/0x3810 fs/bcachefs/fs-io.c:774

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

NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2517 Comm: kworker/u8:9 Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:trace_tlb_flush+0x37/0x140 include/trace/events/tlb.h:38
Code: c1 7e 83 f8 08 73 42 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 28 69 ac 8f be 08 00 00 00 e8 51 44 b6 00 48 0f a3 1d 71 05 6a 0e <73> 12 e8 22 f0 39 00 84 c0 75 09 80 3d d1 6a 54 0e 00 74 11 5b 41
RSP: 0018:ffffc90009467618 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff814263af
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fac6928
RBP: ffffc90009467730 R08: ffffffff8fac692f R09: 1ffffffff1f58d25
R10: dffffc0000000000 R11: fffffbfff1f58d26 R12: 0000000000000000
R13: dffffc0000000001 R14: ffffffff8e42c540 R15: ffffffffffffffff
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557a08aaa008 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 switch_mm_irqs_off+0x7cb/0xae0
 unuse_temporary_mm arch/x86/kernel/alternative.c:1815 [inline]
 __text_poke+0x8f0/0xd30 arch/x86/kernel/alternative.c:1925
 text_poke arch/x86/kernel/alternative.c:1968 [inline]
 text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2357
 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xce/0x1c0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:831
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.264 msecs