INFO: task kworker/u8:4:61 blocked for more than 140 seconds.
Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4 state:D stack:22256 pid:61 tgid:61 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_connector_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
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
__synchronize_srcu+0x1bd/0x2a0 kernel/rcu/srcutree.c:1398
fsnotify_connector_destroy_workfn+0x4d/0xa0 fs/notify/mark.c:308
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf00 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
INFO: task kworker/u8:1:5445 blocked for more than 140 seconds.
Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:1 state:D stack:27040 pid:5445 tgid:5445 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
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
__synchronize_srcu+0x1bd/0x2a0 kernel/rcu/srcutree.c:1398
fsnotify_mark_destroy_workfn+0x113/0x360 fs/notify/mark.c:978
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf00 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
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90000107d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
1 lock held by khungtaskd/30:
#0: ffffffff8ddba6a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8ddba6a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8ddba6a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
5 locks held by kworker/u8:3/47:
#0: ffff88801bae3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90000b77d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fab4590 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
#3: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: cleanup_net+0x503/0xb40 net/core/net_namespace.c:616
#4: ffffffff8ddc5e38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
2 locks held by kworker/u8:4/61:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900015c7d80 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
4 locks held by kworker/0:2/941:
3 locks held by kworker/u8:10/4410:
#0: ffff88802fcb9148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000c2d7d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14d0 net/ipv6/addrconf.c:4196
1 lock held by dhcpcd/4887:
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x26e/0x1e20 net/ipv4/devinet.c:1097
2 locks held by getty/4979:
#0: ffff88803546a0a0 (&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+0xfba/0x1480 drivers/tty/n_tty.c:2211
6 locks held by kworker/0:1/5333:
2 locks held by kworker/0:3/5345:
6 locks held by kworker/0:5/5428:
3 locks held by kworker/1:4/5430:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900036ffd80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
2 locks held by kworker/u8:1/5445:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900036cfd80 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
1 lock held by udevd/5475:
1 lock held by syz-executor/5496:
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6643
1 lock held by syz-executor/5498:
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6643
1 lock held by syz-executor/5499:
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6643
1 lock held by syz-executor/5501:
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6643
1 lock held by syz-executor/5504:
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac9f28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6643
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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+0xf0c/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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 941 Comm: kworker/0:2 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:unwind_next_frame+0x11f8/0x23a0 arch/x86/kernel/unwind_orc.c:672
Code: ee 4c 89 ff e8 b9 c9 4e 00 49 39 ef 0f 83 b5 0a 00 00 e8 fb c7 4e 00 bf 01 00 00 00 e8 d1 ae 1e 00 31 ff 65 8b 1d d0 c7 c6 7e <89> de e8 21 ca 4e 00 85 db 0f 84 7f 0a 00 00 bb 01 00 00 00 e9 3b
RSP: 0018:ffffc90000006930 EFLAGS: 00000046
RAX: 0000000080010305 RBX: 0000000080010304 RCX: 0000000000000000
RDX: 0000000000010305 RSI: ffffffff813d10e5 RDI: 0000000000000000
RBP: ffffc90000007410 R08: 0000000000000006 R09: ffffc900000073a0
R10: ffffc90000007410 R11: 0000000000000000 R12: ffffc90000000000
R13: ffffc90000008000 R14: ffffc90000007418 R15: ffffc900000073a0
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37ae268111 CR3: 00000000315de000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2250 [inline]
slab_free mm/slub.c:4474 [inline]
kfree+0x12a/0x3b0 mm/slub.c:4595
dummy_timer+0x1750/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1981
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x33/0x560 kernel/locking/lockdep.c:5727
Code: 00 00 fc ff df 41 57 4d 89 cf 41 56 49 89 fe 41 55 41 89 d5 41 54 45 89 c4 55 53 48 81 ec b0 00 00 00 48 8d 5c 24 10 89 34 24 <48> c1 eb 03 89 4c 24 04 48 c7 44 24 10 b3 8a b5 41 48 01 d8 48 c7
RSP: 0018:ffffc90000007258 EFLAGS: 00000282
RAX: dffffc0000000000 RBX: ffffc90000007268 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ddba5e0
RBP: 0000000000000060 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8ddba5e0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:930 [inline]
pfn_valid include/linux/mmzone.h:2022 [inline]
__virt_addr_valid+0x1aa/0x590 arch/x86/mm/physaddr.c:65
kasan_addr_to_slab+0xd/0x80 mm/kasan/common.c:37
__kasan_record_aux_stack+0xe/0xd0 mm/kasan/generic.c:526
kvfree_call_rcu+0x74/0xbe0 kernel/rcu/tree.c:3815
cfg80211_update_known_bss+0x3c0/0x11e0 net/wireless/scan.c:1891
__cfg80211_bss_update+0x1aa/0x2440 net/wireless/scan.c:1938
cfg80211_inform_single_bss_data+0x7af/0x1de0 net/wireless/scan.c:2329
cfg80211_inform_bss_data+0x205/0x3ba0 net/wireless/scan.c:3184
cfg80211_inform_bss_frame_data+0x271/0x7a0 net/wireless/scan.c:3279
ieee80211_bss_info_update+0x311/0xab0 net/mac80211/scan.c:226
ieee80211_scan_rx+0x474/0xac0 net/mac80211/scan.c:340
__ieee80211_rx_handle_packet net/mac80211/rx.c:5225 [inline]
ieee80211_rx_list+0x1be3/0x2e90 net/mac80211/rx.c:5462
ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5485
ieee80211_rx include/net/mac80211.h:5138 [inline]
ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:439
tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:107 [inline]
RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
RIP: 0010:do_raw_spin_lock+0x13e/0x2c0 kernel/locking/spinlock_debug.c:116
Code: 28 00 00 00 00 e8 92 59 80 00 be 04 00 00 00 48 8d 7c 24 28 e8 83 59 80 00 8b 44 24 28 ba 01 00 00 00 89 44 24 04 f0 0f b1 13 <0f> 85 95 00 00 00 65 44 8b 35 70 95 99 7e 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90003e2fbd8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8ee5dfc0 RCX: ffffffff816a433d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90003e2fc00
RBP: 1ffff920007c5f7c R08: 0000000000000001 R09: fffff520007c5f80
R10: 0000000000000003 R11: 0000000000000000 R12: ffffffff8ee5dfc8
R13: ffffffff8ee5dfd0 R14: 0000007ef65e141e R15: 00000000000000bf
spin_lock include/linux/spinlock.h:351 [inline]
wg_ratelimiter_gc_entries+0xc6/0x520 drivers/net/wireguard/ratelimiter.c:63
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf00 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