INFO: task kworker/1:3:4541 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3 state:D stack:21488 pid:4541 tgid:4541 ppid:2 flags:0x00004000
Workqueue: events rfkill_sync_work
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
rfkill_sync_work+0x23/0x220 net/rfkill/core.c:1059
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
INFO: task kworker/1:4:5084 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D stack:23600 pid:5084 tgid:5084 ppid:2 flags:0x00004000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
INFO: task syz-executor.5:5706 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:19088 pid:5706 tgid:5706 ppid:1 flags:0x20004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
rfkill_fop_open+0x131/0x850 net/rfkill/core.c:1182
misc_open+0x313/0x390 drivers/char/misc.c:165
chrdev_open+0x5b0/0x630 fs/char_dev.c:414
do_dentry_open+0x907/0x15a0 fs/open.c:953
do_open fs/namei.c:3641 [inline]
path_openat+0x285f/0x3240 fs/namei.c:3798
do_filp_open+0x234/0x490 fs/namei.c:3825
do_sys_openat2+0x13e/0x1d0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_compat_sys_openat fs/open.c:1479 [inline]
__se_compat_sys_openat fs/open.c:1477 [inline]
__ia32_compat_sys_openat+0x23f/0x290 fs/open.c:1477
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xbd/0x120 arch/x86/entry/common.c:321
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346
entry_SYSENTER_compat_after_hwframe+0x7c/0x86
RIP: 0023:0xf72d3579
RSP: 002b:00000000ff9866a0 EFLAGS: 00000206 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f7389fae
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f7427ff4
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor.4:5755 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24600 pid:5755 tgid:5755 ppid:5433 flags:0x20004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x354/0x620 kernel/sched/completion.c:148
__flush_work+0x950/0xad0 kernel/workqueue.c:3410
__cancel_work_timer+0x51d/0x6b0 kernel/workqueue.c:3497
rfkill_unregister+0x96/0x230 net/rfkill/core.c:1143
nfc_unregister_device+0x96/0x2a0 net/nfc/core.c:1167
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168
__fput+0x429/0x8a0 fs/file_table.c:376
__do_sys_close fs/open.c:1554 [inline]
__se_sys_close fs/open.c:1539 [inline]
__ia32_sys_close+0x7e/0x110 fs/open.c:1539
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xbd/0x120 arch/x86/entry/common.c:321
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346
entry_SYSENTER_compat_after_hwframe+0x7c/0x86
RIP: 0023:0xf72d1579
RSP: 002b:00000000fff4bba0 EFLAGS: 00000206 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000577d6400
RDX: 0000000000000000 RSI: 00000000f7425ff4 RDI: 0000000000018ca3
RBP: 00000000f744f0c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor.4:5756 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23792 pid:5756 tgid:5755 ppid:5433 flags:0x20004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
device_lock include/linux/device.h:990 [inline]
nfc_dev_down net/nfc/core.c:143 [inline]
nfc_rfkill_set_block+0x50/0x310 net/nfc/core.c:179
rfkill_set_block+0x1f1/0x440 net/rfkill/core.c:346
rfkill_fop_write+0x5bb/0x790 net/rfkill/core.c:1305
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xbd/0x120 arch/x86/entry/common.c:321
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346
entry_SYSENTER_compat_after_hwframe+0x7c/0x86
RIP: 0023:0xf72d1579
RSP: 002b:00000000f66cb5ac EFLAGS: 00000206 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000080
RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:9/2466:
3 locks held by kworker/1:3/4541:
#0: ffff888014c8c938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c8c938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000302fd20 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000302fd20 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f6447c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_sync_work+0x23/0x220 net/rfkill/core.c:1059
2 locks held by getty/4823:
#0: ffff88802b4d70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:4/5084:
#0: ffff888014c8c938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c8c938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90003d7fd20 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90003d7fd20 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f6447c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182
1 lock held by syz-executor.2/5431:
#0: ffffffff8f6447c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149
3 locks held by kworker/0:8/5610:
2 locks held by syz-executor.5/5706:
#0: ffffffff8e8f6c88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129
#1: ffffffff8f6447c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0x131/0x850 net/rfkill/core.c:1182
1 lock held by syz-executor.4/5755:
#0: ffff888079560100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#0: ffff888079560100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x63/0x2a0 net/nfc/core.c:1165
2 locks held by syz-executor.4/5756:
#0: ffffffff8f6447c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1a9/0x790 net/rfkill/core.c:1297
#1: ffff888079560100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#1: ffff888079560100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline]
#1: ffff888079560100 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x50/0x310 net/nfc/core.c:179
1 lock held by syz-executor.2/6028:
#0: ffffffff8e8f6c88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129
1 lock held by syz-executor.5/6030:
#0: ffffffff8e8f6c88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129
1 lock held by syz-executor.2/6032:
#0: ffffffff8e8f6c88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129
1 lock held by syz-executor.5/6038:
#0: ffffffff8e8f6c88 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2466 Comm: kworker/u4:9 Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__preempt_count_add kernel/rcu/tree.c:696 [inline]
RIP: 0010:rcu_is_watching+0x8/0xb0 kernel/rcu/tree.c:699
Code: e9 2b ff ff ff e8 48 ab eb 09 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 <53> 65 ff 05 38 ed 88 7e e8 6b c9 eb 09 89 c3 83 f8 08 73 7a 49 bf
RSP: 0018:ffffc9000a557b10 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff888071fa8c80 RCX: ffff88802a493b80
RDX: ffff88802a493b80 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8b33bdf1 R09: 1ffffffff2591484
R10: dffffc0000000000 R11: fffffbfff2591485 R12: ffff888071fa8c80
R13: 1ffff1100e3f52f4 R14: ffff88806f5e9188 R15: ffffffff8b33c280
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7299a50 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:779 [inline]
batadv_nc_process_nc_paths+0x26a/0x3a0 net/batman-adv/network-coding.c:699
batadv_nc_worker+0x52c/0x610 net/batman-adv/network-coding.c:735
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242