INFO: task syz-executor.5:2011 blocked for more than 143 seconds.
Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24880 pid:2011 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
unregister_netdevice_notifier+0x22/0x180 net/core/dev.c:1759
devlink_free+0x2cb/0x460 net/devlink/core.c:269
nsim_drv_remove+0x158/0x1d0 drivers/net/netdevsim/dev.c:1687
device_remove+0xc8/0x170 drivers/base/dd.c:540
__device_release_driver drivers/base/dd.c:1240 [inline]
device_release_driver_internal+0x443/0x610 drivers/base/dd.c:1263
bus_remove_device+0x22c/0x420 drivers/base/bus.c:574
device_del+0x48a/0xb80 drivers/base/core.c:3775
device_unregister+0x1e/0xc0 drivers/base/core.c:3805
nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
del_device_store+0x34e/0x4a0 drivers/net/netdevsim/bus.c:219
bus_attr_store+0x76/0xa0 drivers/base/bus.c:170
sysfs_kf_write+0x114/0x170 fs/sysfs/file.c:136
kernfs_fop_write_iter+0x3f1/0x600 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x9ed/0xe10 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5e8b43deef
RSP: 002b:00007ffd7ef265b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5e8b43deef
RDX: 0000000000000001 RSI: 00007ffd7ef26600 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007ffd7ef26550
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f5e8b4e78b6
R13: 00007ffd7ef26600 R14: 0000000000000000 R15: 00007ffd7ef26cd0
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by syslogd/4418:
#0: ffff8880b983c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:547 [inline]
#0: ffff8880b983c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x90/0x120 kernel/sched/core.c:532
#1: ffff88807e953830 (&mm->cid_lock){....}-{2:2}, at: mm_cid_put kernel/sched/sched.h:3270 [inline]
#1: ffff88807e953830 (&mm->cid_lock){....}-{2:2}, at: mm_cid_put kernel/sched/sched.h:3265 [inline]
#1: ffff88807e953830 (&mm->cid_lock){....}-{2:2}, at: switch_mm_cid kernel/sched/sched.h:3298 [inline]
#1: ffff88807e953830 (&mm->cid_lock){....}-{2:2}, at: prepare_task_switch kernel/sched/core.c:5117 [inline]
#1: ffff88807e953830 (&mm->cid_lock){....}-{2:2}, at: context_switch kernel/sched/core.c:5258 [inline]
#1: ffff88807e953830 (&mm->cid_lock){....}-{2:2}, at: __schedule+0x26a3/0x5770 kernel/sched/core.c:6625
2 locks held by getty/4746:
#0: ffff888027ab9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/0:1/975:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90024a3fda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
5 locks held by kworker/u4:7/25894:
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900256dfda8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
#2: ffffffff8e0e28d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:575
#3: ffff88803fc293e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x14f/0x400 drivers/net/wireguard/device.c:249
#4: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#4: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:989
2 locks held by kworker/u4:41/421:
6 locks held by syz-executor.5/2011:
#0: ffff88802c66a460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff8880a9370488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8881470793a8 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e1968 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
#4: ffff888067eda0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
#4: ffff888067eda0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1063 [inline]
#4: ffff888067eda0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1260
#5: ffffffff8e0e28d0 (pernet_ops_rwsem){++++}-{3:3}, at: unregister_netdevice_notifier+0x22/0x180 net/core/dev.c:1759
1 lock held by syz-executor.5/2338:
#0: ffffffff8e0e28d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11819 Comm: kworker/u4:25 Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: phy8 ieee80211_iface_work
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:985 [inline]
RIP: 0010:debug_check_no_obj_freed+0x1dc/0x420 lib/debugobjects.c:1027
Code: 02 00 00 48 89 45 08 4d 89 30 4c 89 c7 4d 89 68 08 e8 68 ce ff ff 48 85 ed 74 2c 49 89 e8 4c 89 c0 48 c1 e8 03 42 80 3c 38 00 <0f> 84 2e ff ff ff 4c 89 c7 4c 89 44 24 38 e8 e1 9f bf fd 4c 8b 44
RSP: 0018:ffffc900239cf948 EFLAGS: 00000046
RAX: 1ffff11012b9dfc0 RBX: ffff88809b4b8800 RCX: ffffffff816516d4
RDX: 1ffffffff23fe15d RSI: 0000000000000004 RDI: ffff888096645440
RBP: ffff888095cefe00 R08: ffff888095cefe00 R09: ffff888088fa7148
R10: fffff52004739f17 R11: 0000000000000000 R12: 0000000000000009
R13: dead000000000122 R14: dead000000000100 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006a1ffd0 CR3: 000000000c571000 CR4: 0000000000350ef0
Call Trace:
slab_free_hook mm/slub.c:1756 [inline]
slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1807
slab_free mm/slub.c:3787 [inline]
__kmem_cache_free+0xaf/0x2d0 mm/slub.c:3800
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1b18/0x3030 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1637
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308