INFO: task syz.8.5073:17598 blocked for more than 153 seconds.
Not tainted 6.14.0-rc3-syzkaller-00060-g6537cfb395f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.5073 state:D stack:24080 pid:17598 tgid:17597 ppid:17259 task_flags:0x400140 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
__do_sys_io_uring_enter io_uring/io_uring.c:3369 [inline]
__se_sys_io_uring_enter+0x2bd/0x3390 io_uring/io_uring.c:3305
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f46a678cde9
RSP: 002b:00007f46a76ce038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f46a69a5fa0 RCX: 00007f46a678cde9
RDX: 000000000000f163 RSI: 0000000000103519 RDI: 0000000000000005
RBP: 00007f46a680e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000028 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f46a69a5fa0 R15: 00007f46a6acfa28
</TASK>
Showing all locks held in the system:
1 lock held by kthreadd/2:
2 locks held by kworker/0:0/8:
3 locks held by kworker/0:1/9:
1 lock held by khungtaskd/30:
#0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
1 lock held by khugepaged/37:
2 locks held by kworker/1:1/51:
4 locks held by kworker/1:2/2149:
#0: ffff88801b081d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801b081d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3317
#1: ffffc900057e7c60 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc900057e7c60 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3317
#2: ffffffff8fed4d08 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x99/0xfb0 net/wireless/reg.c:2480
#3: ffff88801fbc0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6061 [inline]
#3: ffff88801fbc0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2468 [inline]
#3: ffff88801fbc0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x164/0xfb0 net/wireless/reg.c:2483
3 locks held by kworker/R-ipv6_/3170:
#0: ffff888030aca948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff888030aca948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3317
#1: ffffc9000c85fbe0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000c85fbe0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3317
#2: ffffffff8fed4d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:129 [inline]
#2: ffffffff8fed4d08 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x10e/0x16a0 net/ipv6/addrconf.c:4190
2 locks held by syslogd/5190:
2 locks held by udevd/5208:
2 locks held by getty/5590:
#0: ffff888031c850a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/5820:
2 locks held by kworker/1:3/5885:
2 locks held by kworker/1:4/5886:
4 locks held by kworker/1:5/5889:
#0: ffff88805215cd48 ((wq_completion)wg-kex-wg0#148){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88805215cd48 ((wq_completion)wg-kex-wg0#148){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3317
#1: ffffc9000442fc60 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((typeof(*((worker))) *)(( unsigned long)((worker)))); (typeof((typeof(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000442fc60 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((typeof(*((worker))) *)(( unsigned long)((worker)))); (typeof((typeof(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3317
#2: ffff88806aa85308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x158/0xd40 drivers/net/wireguard/noise.c:598
#3: ffff8880611eebb8 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x6fd/0xd40 drivers/net/wireguard/noise.c:632
2 locks held by kworker/1:6/5902:
2 locks held by kworker/1:8/8405:
2 locks held by kworker/0:4/22101:
2 locks held by kworker/1:7/28479:
3 locks held by kworker/u8:15/28730:
4 locks held by kworker/u8:17/28732:
3 locks held by kworker/u8:1/3156:
3 locks held by kworker/u8:5/3870:
4 locks held by kworker/u8:6/3871:
3 locks held by kworker/u8:13/3878:
3 locks held by kworker/u8:14/3879:
3 locks held by udevd/13803:
3 locks held by kworker/u8:0/13878:
3 locks held by kworker/u8:2/13879:
3 locks held by kworker/u8:3/13880:
3 locks held by kworker/u8:4/13881:
2 locks held by kworker/u8:7/13882:
3 locks held by kworker/u8:9/13884:
4 locks held by kworker/u8:18/13887:
3 locks held by kworker/u8:20/13909:
3 locks held by kworker/u8:21/13910:
3 locks held by kworker/1:0/14159:
2 locks held by syz-executor/16911:
1 lock held by syz-executor/16939:
1 lock held by syz-executor/17431:
#0: ffffffff8fed4d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:129 [inline]
#0: ffffffff8fed4d08 (rtnl_mutex){+.+.}-{4:4}, at: inet6_rtm_newaddr+0x7bf/0xf10 net/ipv6/addrconf.c:5023
6 locks held by syz.0.5070/17583:
5 locks held by dhcpcd-run-hook/17595:
1 lock held by syz.8.5073/17598:
#0: ffff888078e1e0a8 (&ctx->uring_lock){+.+.}-{4:4}, at: __do_sys_io_uring_enter io_uring/io_uring.c:3369 [inline]
#0: ffff888078e1e0a8 (&ctx->uring_lock){+.+.}-{4:4}, at: __se_sys_io_uring_enter+0x2bd/0x3390 io_uring/io_uring.c:3305
2 locks held by syz.8.5073/17599:
3 locks held by kworker/u8:22/17602:
3 locks held by syz-executor/17603:
3 locks held by kworker/1:11/17605:
#0: ffff88801b080d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801b080d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3317
#1: ffffc90000bd7c60 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90000bd7c60 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3317
#2: ffffffff8fed4d08 (rtnl_mutex){+.+.}-{4:4}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
4 locks held by kworker/u8:23/17606:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc3-syzkaller-00060-g6537cfb395f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13887 Comm: kworker/u8:18 Not tainted 6.14.0-rc3-syzkaller-00060-g6537cfb395f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:lock_is_held_type+0x148/0x190 kernel/locking/lockdep.c:5928
Code: 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 42 89 d8 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 0f 0b 90 48 c7 c7
RSP: 0018:ffffc90000007028 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000080000101
RDX: ffff888020f0da00 RSI: ffffffff8c2ab6a0 RDI: ffffffff8c80ed80
RBP: 0000000000000003 R08: ffffffff8aa5faac R09: ffffc90000007310
R10: ffffc90000007300 R11: fffff52000000e2e R12: 0000000000000246
R13: ffff888020f0da00 R14: 00000000ffffffff R15: ffffffff8eb38f60
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0ec5fff74 CR3: 0000000063b2c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
__find_rr_leaf+0x395/0x8e0 net/ipv6/route.c:800
find_rr_leaf net/ipv6/route.c:856 [inline]
rt6_select net/ipv6/route.c:900 [inline]
fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2195
ip6_pol_route+0x273/0x15d0 net/ipv6/route.c:2231
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x58c/0x790 net/ipv6/fib6_rules.c:119
ip6_route_input_lookup net/ipv6/route.c:2300 [inline]
ip6_route_input+0x859/0xd90 net/ipv6/route.c:2596
ip6_rcv_finish+0x140/0x3d0 net/ipv6/ip6_input.c:77
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5828 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5941
process_backlog+0x662/0x15b0 net/core/dev.c:6289
__napi_poll+0xcb/0x490 net/core/dev.c:7106
napi_poll net/core/dev.c:7175 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7297
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
do_softirq+0x11b/0x1e0 kernel/softirq.c:462
</IRQ>
<TASK>
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
spin_unlock_bh include/linux/spinlock.h:396 [inline]
cfg80211_inform_single_bss_data+0x162d/0x1ee0 net/wireless/scan.c:2383
cfg80211_inform_bss_data+0x3c3/0x5820 net/wireless/scan.c:3222
cfg80211_inform_bss_frame_data+0x3bb/0x720 net/wireless/scan.c:3317
ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1102 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1581 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1993/0x2e00 net/mac80211/ibss.c:1608
ieee80211_iface_process_skb net/mac80211/iface.c:1611 [inline]
ieee80211_iface_work+0x8dc/0xf90 net/mac80211/iface.c:1665
cfg80211_wiphy_work+0x2f0/0x490 net/wireless/core.c:435
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>