INFO: task syz.0.15:3139 blocked for more than 143 seconds.
Not tainted 6.10.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.15 state:D stack:13800 pid:3139 tgid:3139 ppid:2727 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x6ec/0x14a0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6837
io_schedule+0x3f/0x60 kernel/sched/core.c:9043
folio_wait_bit_common+0x201/0x4b0 mm/filemap.c:1307
folio_lock include/linux/pagemap.h:1049 [inline]
remove_inode_single_folio fs/hugetlbfs/inode.c:603 [inline]
remove_inode_hugepages+0x1be/0x750 fs/hugetlbfs/inode.c:669
hugetlbfs_evict_inode+0x19/0x40 fs/hugetlbfs/inode.c:689
evict+0xd1/0x2a0 fs/inode.c:667
__dentry_kill+0xa2/0x1d0 fs/dcache.c:603
dput+0x75/0xe0 fs/dcache.c:845
__fput+0x1ad/0x2a0 fs/file_table.c:430
task_work_run+0x82/0xb0 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xb5/0x1c0 kernel/entry/common.c:218
do_syscall_64+0x9a/0x170 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f685f375bd9
RSP: 002b:00007ffe8b033f48 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000000e9a4 RCX: 00007f685f375bd9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: ffffffffffffffff R08: 0000000000000001 R09: 000000048b03427f
R10: 00007f685f200000 R11: 0000000000000246 R12: 00007f685f503f6c
R13: 0000000000000032 R14: 00007f685f505a60 R15: 00007f685f503f60
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff83775cd0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff83775cd0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff83775cd0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614
2 locks held by getty/1699:
#0: ffff88810430e0a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc900011fb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x243/0x910 drivers/tty/n_tty.c:2211
1 lock held by syz.0.15/3139:
#0: ffff8881016bc3c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.16/3553:
#0: ffff8881016bc218 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.17/3967:
#0: ffff8881016bc608 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.18/4381:
#0: ffff8881016bc2a8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.19/4795:
#0: ffff8881016bc218 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.20/5209:
#0: ffff8881016bc608 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.21/5623:
#0: ffff8881016bc7b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.22/6037:
#0: ffff8881016bc2a8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.23/6451:
#0: ffff8881016bc608 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.24/6865:
#0: ffff8881016bc458 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.25/7279:
#0: ffff8881016bc578 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.26/7693:
#0: ffff8881016bc2a8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.27/8107:
#0: ffff8881016bc728 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
1 lock held by syz.0.28/8521:
#0: ffff8881016bc4e8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x3e/0xe0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8e/0x140 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+0x5db/0x600 kernel/hung_task.c:379
kthread+0xea/0x100 kernel/kthread.c:389
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 945 Comm: kworker/u8:4 Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_preemption_disabled+0x49/0x120 lib/smp_processor_id.c:55
Code: 7d 65 8b 05 f1 76 98 7d a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 89 d8 48 83 c4 10 5b <41> 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24 00 00 00 00 9c 8f 04
RSP: 0018:ffffc90002667c88 EFLAGS: 00000082
RAX: 0000000000000001 RBX: ffff888104311c00 RCX: 0000000003644000
RDX: 0000000000000000 RSI: ffffffff8328086c RDI: ffffffff831ea26f
RBP: 0000000000001000 R08: 000000000000020e R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff810414a0 R12: 0000000000000004
R13: ffffffff8449c93b R14: ffffffff837aa680 R15: ffffffff812d87ff
FS: 0000000000000000(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555838bd4a8 CR3: 0000000003644000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hw_breakpoint_active arch/x86/include/asm/debugreg.h:115 [inline]
unuse_temporary_mm arch/x86/kernel/alternative.c:1821 [inline]
__text_poke+0x2f9/0x440 arch/x86/kernel/alternative.c:1925
text_poke arch/x86/kernel/alternative.c:1968 [inline]
text_poke_bp_batch+0x1e9/0x310 arch/x86/kernel/alternative.c:2301
text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2477
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked kernel/jump_label.c:205 [inline]
static_key_enable+0x40/0x60 kernel/jump_label.c:218
toggle_allocation_gate+0x3a/0x130 mm/kfence/core.c:833
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0x2ac/0x5c0 kernel/workqueue.c:3312
worker_thread+0x23e/0x300 kernel/workqueue.c:3393
kthread+0xea/0x100 kernel/kthread.c:389
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244