INFO: task kworker/u4:0:11 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-next-20231026-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:0 state:D stack:23456 pid:11 tgid:11 ppid:2 flags:0x00004000
Workqueue: nfc2_nci_rx_wq nci_rx_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee5/0x59b0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe5/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x960/0x1330 kernel/locking/mutex.c:747
device_lock include/linux/device.h:992 [inline]
nfc_targets_found+0xe8/0x3d0 net/nfc/core.c:778
nci_rf_discover_ntf_packet net/nfc/nci/ntf.c:390 [inline]
nci_ntf_packet+0x1478/0x2ce0 net/nfc/nci/ntf.c:798
nci_rx_work+0x17f/0x320 net/nfc/nci/core.c:1522
process_one_work+0x8a2/0x15e0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b6/0x1280 kernel/workqueue.c:2784
kthread+0x337/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task kworker/0:4:5161 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-next-20231026-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:25632 pid:5161 tgid:5161 ppid:2 flags:0x00004000
Workqueue: events nfc_urelease_event_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee5/0x59b0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe5/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x960/0x1330 kernel/locking/mutex.c:747
nci_request net/nfc/nci/core.c:149 [inline]
nci_stop_poll+0xf9/0x1c0 net/nfc/nci/core.c:873
nfc_stop_poll+0x10e/0x270 net/nfc/core.c:259
nfc_urelease_event_work+0x1d9/0x310 net/nfc/netlink.c:1852
process_one_work+0x8a2/0x15e0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b6/0x1280 kernel/workqueue.c:2784
kthread+0x337/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task syz-executor.3:14996 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-next-20231026-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25552 pid:14996 tgid:14995 ppid:9016 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee5/0x59b0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe5/0x270 kernel/sched/core.c:6778
schedule_timeout+0x275/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3da/0x5f0 kernel/sched/completion.c:116
__flush_workqueue+0x3e0/0x1320 kernel/workqueue.c:3195
nci_close_device+0x14c/0x380 net/nfc/nci/core.c:579
nci_unregister_device+0x36/0x300 net/nfc/nci/core.c:1297
virtual_ncidev_close+0x51/0xa0 drivers/nfc/virtual_ncidev.c:163
__fput+0x270/0xbb0 fs/file_table.c:394
task_work_run+0x14c/0x240 kernel/task_work.c:180
get_signal+0x105a/0x2760 kernel/signal.c:2680
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11c/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
do_syscall_64+0x4b/0x110 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f564587cae9
RSP: 002b:00007f56466910c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffff2 RBX: 00007f564599bf80 RCX: 00007f564587cae9
RDX: 0000000000000064 RSI: 0000000020000840 RDI: 0000000000000003
RBP: 00007f56458c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f564599bf80 R15: 00007ffdeafdbf28
Showing all locks held in the system:
3 locks held by kworker/u4:0/11:
#0: ffff8880734dad38 ((wq_completion)nfc2_nci_rx_wq#2){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc90000107d80 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffff888045103100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff888045103100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0xe8/0x3d0 net/nfc/core.c:778
1 lock held by khungtaskd/29:
#0: ffffffff8cfacf60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfacf60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfacf60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
3 locks held by kworker/u4:4/60:
#0: ffff8880b993c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
#1: ffff8880b9928888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988
#2: ffff8880564e8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5870 [inline]
#2: ffff8880564e8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0x2b/0x330 net/wireless/core.c:422
2 locks held by getty/4825:
#0: ffff88802649b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc4/0x1490 drivers/tty/n_tty.c:2201
6 locks held by kworker/0:4/5161:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc90003d5fd80 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xbb/0x310 net/nfc/netlink.c:1843
#3: ffff888045103508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x173/0x310 net/nfc/netlink.c:1849
#4: ffff888045103100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#4: ffff888045103100 (&dev->mutex){....}-{3:3}, at: nfc_stop_poll+0x2d/0x270 net/nfc/core.c:247
#5: ffff888045100350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline]
#5: ffff888045100350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_stop_poll+0xf9/0x1c0 net/nfc/nci/core.c:873
3 locks held by kworker/0:8/5167:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc9000460fd80 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xbb/0x310 net/nfc/netlink.c:1843
2 locks held by kworker/1:13/5728:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffff8880b9928888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988
3 locks held by kworker/1:2/12581:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc9000584fd80 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xbb/0x310 net/nfc/netlink.c:1843
3 locks held by kworker/1:9/12585:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc90009c2fd80 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xbb/0x310 net/nfc/netlink.c:1843
1 lock held by syz-executor.3/14996:
#0: ffff888045100350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x6d/0x380 net/nfc/nci/core.c:561
3 locks held by kworker/0:2/15093:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc900053f7d80 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xbb/0x310 net/nfc/netlink.c:1843
3 locks held by kworker/0:3/15094:
#0: ffff888013070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x15e0 kernel/workqueue.c:2605
#1: ffffc90005407d80 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x7f4/0x15e0 kernel/workqueue.c:2606
#2: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xbb/0x310 net/nfc/netlink.c:1843
2 locks held by syz-executor.3/15101:
#0: ffffffff8dbaac88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x4c0 drivers/char/misc.c:129
#1: ffffffff8ef89868 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x32/0x3c0 net/nfc/core.c:1116
1 lock held by syz-executor.1/15118:
#0: ffffffff8dbaac88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x4c0 drivers/char/misc.c:129
1 lock held by syz-executor.3/15157:
#0: ffffffff8dbaac88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x4c0 drivers/char/misc.c:129
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc7-next-20231026-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf86/0x1210 kernel/hung_task.c:379
kthread+0x337/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2811 Comm: kworker/u4:13 Not tainted 6.6.0-rc7-next-20231026-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:llist_add_batch+0x7d/0x160 lib/llist.c:29
Code: f1 f1 c7 40 04 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 44 24 68 31 c0 e8 cf 3b 27 fd 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 c7 00 00 00 4c 8b 3b 4d 89 e6 48 ba 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000a68f868 EFLAGS: 00000246
RAX: 1ffff11017307b10 RBX: ffff8880b983d880 RCX: ffffffff817d4334
RDX: ffff888027059dc0 RSI: ffffffff8461c031 RDI: ffff8880b98441a0
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b98441a0
R13: 1ffff920014d1f0f R14: dffffc0000000000 R15: ffffffff817d4920
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006559000 CR3: 000000000cd77000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
llist_add include/linux/llist.h:248 [inline]
smp_call_function_many_cond+0xc0e/0x1560 kernel/smp.c:824
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2006 [inline]
text_poke_bp_batch+0x83a/0x960 arch/x86/kernel/alternative.c:2216
text_poke_flush arch/x86/kernel/alternative.c:2407 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2404 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2414
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32e/0x410 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:830 [inline]
toggle_allocation_gate+0xf4/0x250 mm/kfence/core.c:822
process_one_work+0x8a2/0x15e0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b6/0x1280 kernel/workqueue.c:2784
kthread+0x337/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242