INFO: task kworker/0:20:10131 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:20 state:D stack:25640 pid:10131 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
addrconf_dad_work+0xd0/0x16b0 net/ipv6/addrconf.c:4088
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:21:10133 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:21 state:D stack:25128 pid:10133 ppid:2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
linkwatch_event+0xe/0x60 net/core/link_watch.c:277
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.0:10565 blocked for more than 144 seconds.
Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20712 pid:10565 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
wiphy_lock include/net/cfg80211.h:5773 [inline]
reg_process_self_managed_hints+0x8c/0x140 net/wireless/reg.c:3181
wiphy_register+0x2005/0x2ce0 net/wireless/core.c:983
ieee80211_register_hw+0x2bca/0x38b0 net/mac80211/main.c:1392
mac80211_hwsim_new_radio+0x2423/0x40d0 drivers/net/wireless/virtual/mac80211_hwsim.c:5303
hwsim_new_radio_nl+0xe50/0x21c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5983
genl_family_rcv_msg_doit net/netlink/genetlink.c:970 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline]
genl_rcv_msg+0xc85/0xf20 net/netlink/genetlink.c:1067
netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2549
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365
netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1914
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg net/socket.c:748 [inline]
__sys_sendto+0x484/0x640 net/socket.c:2134
__do_sys_sendto net/socket.c:2146 [inline]
__se_sys_sendto net/socket.c:2142 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2142
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2e4083e2ac
RSP: 002b:00007ffe9a748e20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f2e414d4620 RCX: 00007f2e4083e2ac
RDX: 0000000000000024 RSI: 00007f2e414d4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe9a748e74 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f2e414d4670 R14: 0000000000000003 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d326af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d326eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
4 locks held by kworker/1:0/22:
3 locks held by kworker/1:1/26:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90000a1fd20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75
1 lock held by khungtaskd/28:
#0: ffffffff8d326920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/1:3/4732:
2 locks held by getty/4748:
#0: ffff88802964d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1db0 drivers/tty/n_tty.c:2176
4 locks held by kworker/1:4/5078:
4 locks held by kworker/1:5/5079:
7 locks held by kworker/1:6/5080:
2 locks held by kworker/1:7/5104:
4 locks held by kworker/1:10/6727:
3 locks held by kworker/1:11/6734:
#0: ffff888028ba8d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc9000bc3fd20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4630
4 locks held by kworker/1:12/8776:
3 locks held by kworker/0:20/10131:
#0: ffff888028ba8d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90004c1fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16b0 net/ipv6/addrconf.c:4088
3 locks held by kworker/0:21/10133:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90004947d20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:277
1 lock held by syz-executor.0/10491:
#0: ffffffff8d32bfb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8d32bfb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
4 locks held by syz-executor.0/10565:
#0: ffffffff8e512d10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077
#1: ffffffff8e512bc8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8e512bc8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x126/0xf20 net/netlink/genetlink.c:1065
#2: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_register+0x1e38/0x2ce0 net/wireless/core.c:962
#3: ffff888080df8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5773 [inline]
#3: ffff888080df8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_process_self_managed_hints+0x8c/0x140 net/wireless/reg.c:3181
1 lock held by syz-executor.0/10587:
#0: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7d4/0xf50 net/core/rtnetlink.c:6421
1 lock held by syz-executor.0/10594:
#0: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e4b0d88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7d4/0xf50 net/core/rtnetlink.c:6421
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5078 Comm: kworker/1:4 Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events cfg80211_wiphy_work
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:206
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d 74 b5 0b 0d 48 89 de 5b e9 c3 d9 57 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 40 c3 77 7e 65 8b 15 41 c3 77 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc900001e0158 EFLAGS: 00000246
RAX: ffffffff8972e0d1 RBX: 0000000000000100 RCX: ffff888079c7d940
RDX: ffff888079c7d940 RSI: 0000000000000100 RDI: 0000000000000100
RBP: ffffc900001e02d8 R08: ffffffff8972e0c3 R09: ffffc900001e0410
R10: ffffc900001e0400 R11: fffff5200003c04e R12: ffff88803d68e000
R13: 0000000000000100 R14: ffffc900001e03e0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 000000000d130000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__find_rr_leaf+0x171/0x8e0 net/ipv6/route.c:797
find_rr_leaf net/ipv6/route.c:849 [inline]
rt6_select net/ipv6/route.c:893 [inline]
fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2181
ip6_pol_route+0x20f/0x13c0 net/ipv6/route.c:2217
pol_lookup_func include/net/ip6_fib.h:576 [inline]
fib6_rule_lookup+0x269/0x5d0 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2286 [inline]
ip6_route_input+0x833/0xda0 net/ipv6/route.c:2582
ip6_rcv_finish+0x144/0x240 net/ipv6/ip6_input.c:77
NF_HOOK+0x368/0x410 include/linux/netfilter.h:303
__netif_receive_skb_one_core net/core/dev.c:5452 [inline]
__netif_receive_skb+0x1ca/0x530 net/core/dev.c:5566
process_backlog+0x34b/0x710 net/core/dev.c:5894
__napi_poll+0xc7/0x470 net/core/dev.c:6460
napi_poll net/core/dev.c:6527 [inline]
net_rx_action+0x78b/0x1010 net/core/dev.c:6660
__do_softirq+0x2ab/0x908 kernel/softirq.c:553
do_softirq+0x11b/0x1e0 kernel/softirq.c:454
__local_bh_enable_ip+0x1b5/0x1f0 kernel/softirq.c:381
spin_unlock_bh include/linux/spinlock.h:395 [inline]
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2887 [inline]
cfg80211_inform_bss_frame_data+0xe8d/0x1870 net/wireless/scan.c:2912
ieee80211_bss_info_update+0x80c/0xb20 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x18e5/0x2ca0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0x7bd/0xcf0 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x21e/0x250 net/wireless/core.c:435
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308