INFO: task syz-executor.0:14663 blocked for more than 144 seconds.
Not tainted 6.10.0-rc4-syzkaller-00164-g66cc544fd75c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28640 pid:14663 tgid:14662 ppid:13760 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
__flush_work+0x5bd/0xc60 kernel/workqueue.c:4211
__cancel_work_sync+0x10c/0x130 kernel/workqueue.c:4331
uhid_dev_destroy drivers/hid/uhid.c:584 [inline]
uhid_char_write+0xc0b/0x10c0 drivers/hid/uhid.c:761
vfs_write+0x29a/0x1140 fs/read_write.c:588
ksys_write+0x1f8/0x260 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff0d9a7d0a9
RSP: 002b:00007ff0da7960c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff0d9bb3f80 RCX: 00007ff0d9a7d0a9
RDX: 0000000000000004 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007ff0d9aec074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff0d9bb3f80 R15: 00007ffd24699c88
Showing all locks held in the system:
7 locks held by kworker/0:1/9:
1 lock held by khungtaskd/30:
#0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:4/61:
2 locks held by getty/4843:
#0: ffff88802abc30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
2 locks held by syz-fuzzer/5082:
1 lock held by syz-executor.4/5107:
3 locks held by kworker/u8:11/6786:
3 locks held by kworker/1:0/10214:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc90003497d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffffffff8f7485a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
2 locks held by kworker/1:3/10460:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc90004007d80 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
1 lock held by syz-executor.1/14084:
1 lock held by syz-executor.3/14200:
1 lock held by syz-executor.0/14663:
#0: ffff88805d610068 (&uhid->devlock){+.+.}-{3:3}, at: uhid_char_write+0x71/0x10c0 drivers/hid/uhid.c:731
7 locks held by kworker/u8:13/14693:
#0: ffff8880162d3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc900035e7d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffffffff8f733310 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594
#3: ffff88807e21b0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff88807e21b0e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff88807e21b0e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x12d/0x2b0 net/devlink/core.c:506
#4: ffff88802eb84250 (&devlink->lock_key#21){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff88802eb84250 (&devlink->lock_key#21){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff88802eb84250 (&devlink->lock_key#21){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x137/0x2b0 net/devlink/core.c:506
#5: ffffffff8f7485a8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x6f/0x6a0 drivers/net/netdevsim/netdev.c:773
#6: ffffffff8dbbd0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
2 locks held by kworker/u8:15/14697:
#0: ffff8880b923ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:567 [inline]
#0: ffff8880b923ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:552
#1: ffff8880b9328a08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988
3 locks held by syz-executor.2/14978:
#0: ffff888024dd8d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:554
#1: ffff888024dd8078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x339/0x1100 net/bluetooth/hci_sync.c:5050
#2: ffffffff8f9aa668 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8f9aa668 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2584
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc4-syzkaller-00164-g66cc544fd75c #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+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 2817 Comm: kworker/u8:9 Not tainted 6.10.0-rc4-syzkaller-00164-g66cc544fd75c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:mark_usage kernel/locking/lockdep.c:4578 [inline]
RIP: 0010:__lock_acquire+0x90f/0x3b30 kernel/locking/lockdep.c:5091
Code: 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 de 2f 00 00 41 0f b6 46 22 a8 18 75 72 03 0f 85 86 09 00 00 48 8b 1c 24 ba 02 00 00 00 4c 89 f6 48 89
RSP: 0018:ffffc90009417770 EFLAGS: 00000046
RAX: 0000000000000004 RBX: ffff88802bab657a RCX: 0000000000000001
RDX: 0000000000000002 RSI: 0000000000000008 RDI: ffff88802bab6579
RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff284cc58
R10: ffffffff942662c7 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802bab6558 R15: 0000000000000080
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffb800e56c6 CR3: 000000000d97a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
debug_objects_fill_pool lib/debugobjects.c:614 [inline]
__debug_object_init+0xf2/0x480 lib/debugobjects.c:627
debug_timer_init kernel/time/timer.c:831 [inline]
debug_init kernel/time/timer.c:879 [inline]
init_timer_key+0x35/0x240 kernel/time/timer.c:923
batadv_iv_ogm_aggregate_new+0x3bb/0x4a0 net/batman-adv/bat_iv_ogm.c:584
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline]
batadv_iv_ogm_schedule_buff+0x99b/0x1500 net/batman-adv/bat_iv_ogm.c:833
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244