INFO: task kworker/0:1:23588 blocked for more than 143 seconds.
Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:23456 pid:23588 tgid:23588 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5bd/0x9d0 kernel/locking/mutex.c:752
addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4686
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INFO: task kworker/0:0:22714 blocked for more than 143 seconds.
Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:25088 pid:22714 tgid:22714 ppid:2 flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5bd/0x9d0 kernel/locking/mutex.c:752
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INFO: task kworker/0:4:20669 blocked for more than 143 seconds.
Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:25440 pid:20669 tgid:20669 ppid:2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5bd/0x9d0 kernel/locking/mutex.c:752
linkwatch_event+0x51/0xc0 net/core/link_watch.c:281
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INFO: task syz-executor.0:3184 blocked for more than 143 seconds.
Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24912 pid:3184 tgid:3179 ppid:6868 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5bd/0x9d0 kernel/locking/mutex.c:752
cangw_pernet_exit_batch+0x15/0xa0 net/can/gw.c:1257
ops_exit_list+0x128/0x180 net/core/net_namespace.c:175
setup_net+0x654/0xa50 net/core/net_namespace.c:362
copy_net_ns+0x2f1/0x670 net/core/net_namespace.c:495
create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110
copy_namespaces+0x468/0x560 kernel/nsproxy.c:179
copy_process+0x3361/0x97b0 kernel/fork.c:2500
kernel_clone+0xfd/0x930 kernel/fork.c:2902
__do_sys_clone+0xba/0x100 kernel/fork.c:3045
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fb755a7dda9
RSP: 002b:00007fb756877078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fb755bac050 RCX: 00007fb755a7dda9
RDX: 0000000020001080 RSI: 0000000020001070 RDI: 0000000060080200
RBP: 00007fb755aca47a R08: 0000000020001100 R09: 0000000020001100
R10: 00000000200010c0 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb755bac050 R15: 00007ffca61c5658
INFO: task syz-executor.3:3256 blocked for more than 144 seconds.
Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25728 pid:3256 tgid:3256 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5bd/0x9d0 kernel/locking/mutex.c:752
ip_tunnel_init_net+0x225/0x5e0 net/ipv4/ip_tunnel.c:1090
ops_init+0xb9/0x650 net/core/net_namespace.c:136
setup_net+0x422/0xa50 net/core/net_namespace.c:339
copy_net_ns+0x2f1/0x670 net/core/net_namespace.c:495
create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228
ksys_unshare+0x41b/0x980 kernel/fork.c:3428
__do_sys_unshare kernel/fork.c:3499 [inline]
__se_sys_unshare kernel/fork.c:3497 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3497
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f16c267f507
RSP: 002b:00007fffa9633ed8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f16c267f507
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fffa9633fb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffa9634598
R13: 0000000000000003 R14: 00007f16c27ac9d8 R15: 000000000000000c
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/4816:
#0: ffff88802eef80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfca/0x1490 drivers/tty/n_tty.c:2201
2 locks held by kworker/1:8/9092:
#0: ffff888014c8e538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc9000470fd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
3 locks held by kworker/0:1/23588:
#0: ffff88802a97e538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc9000391fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4686
3 locks held by kworker/0:0/22714:
#0: ffff888014c8c938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc900048dfd80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
5 locks held by kworker/u4:3/9864:
#0: ffff888014c8f938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc9000382fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffffffff8f2cf810 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb20 net/core/net_namespace.c:580
#3: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x8f/0xb30 net/core/dev.c:11605
#4: ffffffff8d7b8a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#4: ffffffff8d7b8a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x6b5/0x800 kernel/rcu/tree_exp.h:995
3 locks held by kworker/1:2/20473:
#0: ffff88802a97e538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc90003a6fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4686
3 locks held by kworker/0:4/20669:
#0: ffff888014c8c938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc9000380fd80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:281
2 locks held by syz-executor.0/3184:
#0: ffffffff8f2cf810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x670 net/core/net_namespace.c:491
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: cangw_pernet_exit_batch+0x15/0xa0 net/can/gw.c:1257
2 locks held by syz-executor.3/3256:
#0: ffffffff8f2cf810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x670 net/core/net_namespace.c:491
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x225/0x5e0 net/ipv4/ip_tunnel.c:1090
2 locks held by syz-executor.1/3298:
#0: ffffffff8f2cf810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x670 net/core/net_namespace.c:491
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x240 net/smc/smc_pnet.c:878
1 lock held by syz-executor.0/3301:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
2 locks held by syz-executor.4/3318:
#0: ffffffff8f2cf810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x670 net/core/net_namespace.c:491
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x240 net/smc/smc_pnet.c:878
1 lock held by syz-executor.1/3402:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
1 lock held by syz-executor.4/3454:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
1 lock held by syz-executor.3/3482:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
2 locks held by syz-executor.2/3806:
#0: ffffffff8f3809f0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
#1: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb4/0xb10 net/wireless/nl80211.c:16461
1 lock held by syz-executor.0/3809:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
1 lock held by syz-executor.2/3813:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
1 lock held by syz-executor.1/3819:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
1 lock held by syz-executor.4/3822:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
1 lock held by syz-executor.3/3826:
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e4be8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6615
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4509 Comm: kworker/u4:0 Not tainted 6.8.0-rc6-syzkaller-00011-g45ec2f5f6ed3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_mcast_mla_update
RIP: 0010:batadv_mcast_mla_forw_flags_get net/batman-adv/multicast.c:253 [inline]
RIP: 0010:batadv_mcast_mla_flags_get net/batman-adv/multicast.c:290 [inline]
RIP: 0010:__batadv_mcast_mla_update net/batman-adv/multicast.c:910 [inline]
RIP: 0010:batadv_mcast_mla_update+0x506/0x3200 net/batman-adv/multicast.c:949
Code: 85 3c 29 00 00 4d 8b 6d 00 49 81 fd 60 77 9b 94 0f 84 00 01 00 00 e8 09 7d 01 f7 49 8d 7d 10 48 89 f8 48 c1 e8 03 0f b6 04 18 <84> c0 74 06 0f 8e 33 29 00 00 45 0f b6 75 10 bf 03 00 00 00 44 89
RSP: 0018:ffffc9000501fb50 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8a89d192
RDX: ffff888097630000 RSI: ffffffff8a89d167 RDI: ffff88802b087010
RBP: ffffed1006c18991 R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: ffffffff8a89d0bf R12: 0000000000000000
R13: ffff88802b087000 R14: 0000000000000000 R15: ffff8880360c5630
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005631bdf8dcc0 CR3: 000000000d57a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243