INFO: task syz-executor182:5079 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00315-gdc772f8237f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor182 state:D stack:12912 pid:5079  tgid:5079  ppid:5076   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:135
 closure_sync include/linux/closure.h:194 [inline]
 __bch2_write+0x54a5/0x5c40 fs/bcachefs/io_write.c:1495
 bch2_write+0x947/0x1670 fs/bcachefs/io_write.c:1623
 closure_queue include/linux/closure.h:269 [inline]
 closure_call include/linux/closure.h:402 [inline]
 bch2_dio_write_loop fs/bcachefs/fs-io-direct.c:531 [inline]
 bch2_direct_write+0x1a52/0x3050 fs/bcachefs/fs-io-direct.c:654
 bch2_write_iter+0x206/0x2840 fs/bcachefs/fs-io-buffered.c:1135
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa72/0xc90 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 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: 0033:0x7fd7e7920e39
RSP: 002b:00007ffd2b7caa58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd7e7920e39
RDX: 00000000175d9003 RSI: 0000000020000200 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000555500000000 R09: 0000555500000000
R10: 0000555500000000 R11: 0000000000000246 R12: 00000000000f4240
R13: 00007ffd2b7cacc8 R14: 0000000000000001 R15: 00007ffd2b7caa90
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4827:
 #0: ffff88802ac1c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by syz-executor182/5079:
 #0: ffff8880242f0420 (sb_writers#9){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
 #0: ffff8880242f0420 (sb_writers#9){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
 #1: ffff88807a6f08b8 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff88807a6f08b8 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: bch2_direct_write+0x243/0x3050 fs/bcachefs/fs-io-direct.c:598

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

NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00315-gdc772f8237f9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.10.0-rc2-syzkaller-00315-gdc772f8237f9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:kasan_report+0x15e/0x180 mm/kasan/report.c:608
Code: 89 df e8 05 f7 ff ff 48 89 df e8 ed f7 ff ff 40 0f b6 d5 48 8d 7c 24 08 4c 89 e6 e8 3c fd ff ff b0 01 4c 89 2c 24 ff 34 24 9d <48> 83 c4 70 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 31 c0 eb
RSP: 0018:ffffc90000ab7620 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffff88801b2cbc00 RCX: ffffffff813523e5
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 00002aaaaaaab0e2
RBP: 0000000000000000 R08: 00002aaaaaaab0e3 R09: fffff52000156f42
R10: dffffc0000000000 R11: fffff52000156f42 R12: 0000000000000001
R13: 0000000000000082 R14: ffffc90000ab7a10 R15: 00002aaaaaaab0e2
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005599a7c1d680 CR3: 0000000015078000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106
 text_poke_memcpy+0x25/0x30 arch/x86/kernel/alternative.c:1830
 __text_poke+0x786/0xd30 arch/x86/kernel/alternative.c:1907
 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_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 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: 1.245 msecs