INFO: task syz-executor233:5085 blocked for more than 143 seconds.
      Not tainted 6.2.0-next-20230223-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor233 state:D stack:26008 pid:5085  ppid:5084   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5304 [inline]
 __schedule+0x24b4/0x5ac0 kernel/sched/core.c:6622
 schedule+0xde/0x1a0 kernel/sched/core.c:6698
 io_schedule+0xbe/0x130 kernel/sched/core.c:8884
 bit_wait_io+0x16/0xe0 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0x11f/0x1a0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0xd9/0x110 kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:70 [inline]
 lock_buffer include/linux/buffer_head.h:400 [inline]
 __sync_dirty_buffer+0x30e/0x380 fs/buffer.c:2780
 __ext4_handle_dirty_metadata+0x2b7/0x8e0 fs/ext4/ext4_jbd2.c:387
 ext4_handle_dirty_dirblock+0x371/0x470 fs/ext4/namei.c:438
 ext4_finish_convert_inline_dir fs/ext4/inline.c:1181 [inline]
 ext4_convert_inline_data_nolock+0xac1/0xf10 fs/ext4/inline.c:1258
 ext4_try_add_inline_entry+0x473/0x8d0 fs/ext4/inline.c:1331
 ext4_add_entry+0x80d/0xe30 fs/ext4/namei.c:2385
 ext4_mkdir+0x42e/0xb20 fs/ext4/namei.c:3007
 vfs_mkdir+0x242/0x460 fs/namei.c:4038
 do_mkdirat+0x28d/0x310 fs/namei.c:4061
 __do_sys_mkdirat fs/namei.c:4076 [inline]
 __se_sys_mkdirat fs/namei.c:4074 [inline]
 __x64_sys_mkdirat+0x119/0x170 fs/namei.c:4074
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fefcf1fa249
RSP: 002b:00007fff4001b058 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fefcf1fa249
RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fefcf268ec0 R09: 00007fefcf268ec0
R10: 00007fefcf268ec0 R11: 0000000000000246 R12: 00007fff4001b080
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8c796bf0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c7968f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffffffff8c797740 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6495
2 locks held by getty/4762:
 #0: ffff888027e84098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by syz-executor233/5085:
 #0: ffff888021446460 (sb_writers#4){.+.+}-{0:0}, at: filename_create+0xf1/0x4a0 fs/namei.c:3801
 #1: ffff888077602218 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
 #1: ffff888077602218 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1aa/0x4a0 fs/namei.c:3808
 #2: ffff888077601ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #2: ffff888077601ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0x10c/0x8d0 fs/ext4/inline.c:1289

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-next-20230223-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x316/0x3e0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x3a7/0x460 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xe94/0x11e0 kernel/hung_task.c:379
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.2.0-next-20230223-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 96 aa 97 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 dd 12 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc900001079c8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000107a80 RCX: ffffffff8a0c109b
RDX: ffff8880167c3a80 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000f R14: dffffc0000000000 R15: 1ffff92000020f4a
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bcf93c7680 CR3: 000000000c571000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 insn_get_sib+0x59/0x330 arch/x86/lib/insn.c:420
 insn_get_displacement+0x34a/0x6c0 arch/x86/lib/insn.c:464
 insn_get_immediate arch/x86/lib/insn.c:632 [inline]
 insn_get_length arch/x86/lib/insn.c:707 [inline]
 insn_decode+0x35f/0x3b0 arch/x86/lib/insn.c:747
 text_poke_loc_init+0xbc/0x4d0 arch/x86/kernel/alternative.c:2074
 arch_jump_label_transform_queue+0x98/0x100 arch/x86/kernel/jump_label.c:138
 __jump_label_update+0x12e/0x410 kernel/jump_label.c:475
 jump_label_update+0x32f/0x410 kernel/jump_label.c:829
 static_key_disable_cpuslocked+0x156/0x1b0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate mm/kfence/core.c:804 [inline]
 toggle_allocation_gate+0x143/0x230 mm/kfence/core.c:791
 process_one_work+0x9bf/0x1820 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.406 msecs