INFO: task syz-executor219:5068 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor219 state:D stack:20816 pid:5068 ppid:5067 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
io_schedule+0x83/0x100 kernel/sched/core.c:8811
bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbb/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1c3/0x240 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:69 [inline]
lock_buffer include/linux/buffer_head.h:397 [inline]
__sync_dirty_buffer+0x107/0x330 fs/buffer.c:2732
__ext4_handle_dirty_metadata+0x29a/0x810 fs/ext4/ext4_jbd2.c:387
ext4_convert_inline_data_nolock+0x6e5/0x820 fs/ext4/inline.c:1255
ext4_convert_inline_data+0x4c8/0x610 fs/ext4/inline.c:2066
ext4_fallocate+0x149/0x1ca0 fs/ext4/extents.c:4701
vfs_fallocate+0x515/0x670 fs/open.c:323
ksys_fallocate fs/open.c:346 [inline]
__do_sys_fallocate fs/open.c:354 [inline]
__se_sys_fallocate fs/open.c:352 [inline]
__x64_sys_fallocate+0xb9/0x100 fs/open.c:352
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4e3cccc209
RSP: 002b:00007fff80867bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4e3cccc209
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007f4e3cd3aec0 R09: 00007f4e3cd3aec0
R10: 00000000001000f4 R11: 0000000000000246 R12: 00007fff80867c00
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326e90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327690 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326cc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4744:
#0: ffff888149efb098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
3 locks held by syz-executor219/5068:
#0: ffff88802b59a460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2935 [inline]
#0: ffff88802b59a460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x489/0x670 fs/open.c:322
#1: ffff888076e7ac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888076e7ac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x141/0x1ca0 fs/ext4/extents.c:4700
#2: ffff888076e7a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888076e7a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3a4/0x610 fs/ext4/inline.c:2064
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 75 Comm: kworker/u4:4 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x33/0x60 kernel/kcov.c:207
Code: 40 98 03 00 65 8b 15 c4 bc 77 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 6c 15 00 00 00 74 2c 8b 91 48 15 00 00 <83> fa 02 75 21 48 8b 91 50 15 00 00 48 8b 32 48 8d 7e 01 8b 89 4c
RSP: 0018:ffffc900015e7818 EFLAGS: 00000246
RAX: ffffffff813e284a RBX: 0000000001e0a2a5 RCX: ffff888018cc0000
RDX: 0000000000000000 RSI: 0000000001e0a2a5 RDI: 000000001fffffff
RBP: ffffc900015e79f0 R08: ffffffff813e283c R09: ffffed100250cc0d
R10: ffffed100250cc0d R11: 1ffff1100250cc0c R12: 1ffff920002bcf14
R13: dffffc0000000000 R14: 0000000001e0a2a5 R15: ffffffff81e0a2a5
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056235d7db268 CR3: 000000000d08e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__phys_addr+0x10a/0x160 arch/x86/mm/physaddr.c:23
__text_poke+0x100/0x900 arch/x86/kernel/alternative.c:1566
text_poke arch/x86/kernel/alternative.c:1671 [inline]
text_poke_bp_batch+0x64c/0x850 arch/x86/kernel/alternative.c:2027
text_poke_flush arch/x86/kernel/alternative.c:2131 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:2138
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xc8/0x1b0 kernel/jump_label.c:235
static_key_disable+0x16/0x20 kernel/jump_label.c:243
toggle_allocation_gate+0x1a8/0x240 mm/kfence/core.c:804
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308