INFO: task kworker/u4:1:11302 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1 state:D stack:22200 pid:11302 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_timeout+0xac/0x300 kernel/time/timer.c:2143
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x2aa/0x350 kernel/rcu/srcutree.c:1283
fsnotify_mark_destroy_workfn+0x142/0x340 fs/notify/mark.c:898
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d523910 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d524110 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
3 locks held by kworker/0:1/14:
#0: ffff88814a530938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90000137d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16e0 net/ipv6/addrconf.c:4083
1 lock held by khungtaskd/28:
#0: ffffffff8d523740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4733:
#0: ffff88802caf2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
3 locks held by kworker/1:6/5156:
3 locks held by kworker/1:15/5516:
#0: ffff88814a530938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90003e1fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16e0 net/ipv6/addrconf.c:4083
2 locks held by kworker/u4:1/11302:
#0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90004f6fd00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
2 locks held by kworker/u4:4/11308:
#0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90008247d00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
1 lock held by syz-executor.4/1838:
#0: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#0: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46f/0x890 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.5/1868:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
2 locks held by syz-executor.3/1866:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
#1: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#1: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a6/0x890 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.0/1867:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.1/1886:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.4/1891:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.5/1897:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
1 lock held by dhcpcd/1900:
#0: ffff88808be52130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88808be52130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/1901:
#0: ffff88807c348130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88807c348130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/1902:
#0: ffff8880a60de130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff8880a60de130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/1903:
#0: ffff8880b55dc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff8880b55dc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/1904:
#0: ffff88809e814130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88809e814130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/1905:
#0: ffff88804576c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88804576c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
1 lock held by syz-executor.1/1907:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.4/1911:
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e664088 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
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: 5156 Comm: kworker/1:6 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events ipvlan_process_multicast
RIP: 0010:__in6_dev_get include/net/addrconf.h:315 [inline]
RIP: 0010:ip6_ignore_linkdown+0x29/0x110 include/net/addrconf.h:406
Code: 00 55 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 aa 09 07 f8 48 81 c3 40 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 ed bb 5d f8 48 8b 1b e8 65 e0 32 ff 84 c0 74 07
RSP: 0018:ffffc900001e0208 EFLAGS: 00000246
RAX: 1ffff110147bc868 RBX: ffff8880a3de4340 RCX: ffff88801ee53a80
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8880a3de4000
RBP: ffff8880a8dfc0a8 R08: ffffffff8986b48d R09: ffffc900001e0530
R10: ffffc900001e0520 R11: 1ffff9200003c06c R12: ffff8880a8dfc0bf
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00f4aeff0 CR3: 000000000d28e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
find_match+0x94/0xa00 net/ipv6/route.c:741
__find_rr_leaf+0x278/0x8e0 net/ipv6/route.c:829
find_rr_leaf net/ipv6/route.c:850 [inline]
rt6_select net/ipv6/route.c:894 [inline]
fib6_table_lookup+0x370/0xcd0 net/ipv6/route.c:2182
ip6_pol_route+0x1f3/0x1920 net/ipv6/route.c:2218
pol_lookup_func include/net/ip6_fib.h:582 [inline]
fib6_rule_lookup+0x264/0x600 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2287 [inline]
ip6_route_input+0x8ba/0xdd0 net/ipv6/route.c:2583
ip6_rcv_finish+0x13c/0x230 net/ipv6/ip6_input.c:77
__netif_receive_skb_one_core net/core/dev.c:5482 [inline]
__netif_receive_skb+0x1c5/0x500 net/core/dev.c:5596
process_backlog+0x568/0x920 net/core/dev.c:5924
__napi_poll+0xbe/0x4b0 net/core/dev.c:6485
napi_poll net/core/dev.c:6552 [inline]
net_rx_action+0x76c/0x1100 net/core/dev.c:6663
__do_softirq+0x277/0x75b kernel/softirq.c:571
do_softirq+0x161/0x240 kernel/softirq.c:472
__local_bh_enable_ip+0x1b0/0x1f0 kernel/softirq.c:396
ipvlan_process_multicast+0xa87/0xfd0 drivers/net/ipvlan/ipvlan_core.c:279
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308