INFO: task syz-executor.4:16695 blocked for more than 143 seconds.
Not tainted 6.6.0-rc1-syzkaller-00156-gf2fa1c812c91 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26784 pid:16695 ppid:5093 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
rcu_barrier+0x48/0x6c0 kernel/rcu/tree.c:4001
netdev_run_todo+0x2f4/0x11d0 net/core/dev.c:10418
sit_exit_batch_net+0x4af/0x580 net/ipv6/sit.c:1888
ops_exit_list+0x125/0x170 net/core/net_namespace.c:175
setup_net+0x64d/0xa40 net/core/net_namespace.c:362
copy_net_ns+0x2fa/0x670 net/core/net_namespace.c:491
create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228
ksys_unshare+0x3da/0x930 kernel/fork.c:3435
__do_sys_unshare kernel/fork.c:3506 [inline]
__se_sys_unshare kernel/fork.c:3504 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3504
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f492ac7cae9
RSP: 002b:00007f492b9ce0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f492ad9bf80 RCX: 00007f492ac7cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000004c060000
RBP: 00007f492acc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f492ad9bf80 R15: 00007fffd799b468
INFO: task syz-executor.4:16805 blocked for more than 144 seconds.
Not tainted 6.6.0-rc1-syzkaller-00156-gf2fa1c812c91 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25168 pid:16805 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x27a/0x2c0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e2/0x5f0 kernel/sched/completion.c:116
rcu_barrier+0x323/0x6c0 kernel/rcu/tree.c:4069
netdev_run_todo+0x2f4/0x11d0 net/core/dev.c:10418
nsim_destroy+0xb3/0x190 drivers/net/netdevsim/netdev.c:418
__nsim_dev_port_del+0x189/0x240 drivers/net/netdevsim/dev.c:1425
nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1437 [inline]
nsim_dev_reload_destroy+0x172/0x560 drivers/net/netdevsim/dev.c:1658
nsim_drv_remove+0x52/0x1d0 drivers/net/netdevsim/dev.c:1673
device_remove+0xc8/0x170 drivers/base/dd.c:567
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22c/0x420 drivers/base/bus.c:574
device_del+0x39a/0xa50 drivers/base/core.c:3811
device_unregister+0x1d/0xc0 drivers/base/core.c:3852
nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
del_device_store+0x346/0x4b0 drivers/net/netdevsim/bus.c:219
bus_attr_store+0x76/0xa0 drivers/base/bus.c:170
sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:136
kernfs_fop_write_iter+0x3ff/0x610 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:1985 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x650/0xe40 fs/read_write.c:584
ksys_write+0x12f/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9d8d87b82f
RSP: 002b:00007ffe807e5cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f9d8d87b82f
RDX: 0000000000000001 RSI: 00007ffe807e5d10 RDI: 0000000000000005
RBP: 00007f9d8d8c8021 R08: 0000000000000000 R09: 00007ffe807e5b17
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffe807e5d10 R14: 00007f9d8e4c4620 R15: 0000000000000003
INFO: task syz-executor.4:16827 blocked for more than 145 seconds.
Not tainted 6.6.0-rc1-syzkaller-00156-gf2fa1c812c91 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25064 pid:16827 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209
bus_attr_store+0x76/0xa0 drivers/base/bus.c:170
sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:136
kernfs_fop_write_iter+0x3ff/0x610 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:1985 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x650/0xe40 fs/read_write.c:584
ksys_write+0x12f/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f230be7b82f
RSP: 002b:00007ffcff3d0760 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f230be7b82f
RDX: 0000000000000001 RSI: 00007ffcff3d07b0 RDI: 0000000000000005
RBP: 00007f230bec8021 R08: 0000000000000000 R09: 00007ffcff3d05b7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffcff3d07b0 R14: 00007f230cac4620 R15: 0000000000000003
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc1-syzkaller-00156-gf2fa1c812c91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xfac/0x1230 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3578 Comm: kworker/0:8 Not tainted 6.6.0-rc1-syzkaller-00156-gf2fa1c812c91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x70 kernel/kcov.c:206
Code: ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 3d ee 7b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 <65> 48 8b 14 25 c0 bc 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82
RSP: 0018:ffffc90000006c08 EFLAGS: 00000206
RAX: 0000000080000302 RBX: ffffc90000006c90 RCX: 0000000000000100
RDX: ffff88801c483b80 RSI: ffffffff813a4975 RDI: 0000000000000006
RBP: 0000000000000002 R08: 0000000000000006 R09: ffffffff88338ec0
R10: ffffffff8a800000 R11: 0000000000001450 R12: ffffffff88338ec0
R13: 0000000000000000 R14: ffffc90000006d50 R15: ffffc90000006cc5
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb4367e2bd0 CR3: 000000000c976000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:209 [inline]
unwind_next_frame+0x205/0x2390 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
slab_free mm/slub.c:3809 [inline]
__kmem_cache_free+0xb8/0x2f0 mm/slub.c:3822
nf_conntrack_free+0xff/0x450 net/netfilter/nf_conntrack_core.c:1690
nf_ct_destroy+0x1ab/0x2c0 net/netfilter/nf_conntrack_core.c:598
nf_ct_put include/net/netfilter/nf_conntrack.h:190 [inline]
nf_ct_put include/net/netfilter/nf_conntrack.h:187 [inline]
nf_conntrack_in+0x8d8/0x1850 net/netfilter/nf_conntrack_core.c:2017
ipv4_conntrack_local+0x160/0x260 net/netfilter/nf_conntrack_proto.c:229
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_slow+0xbf/0x1e0 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:259 [inline]
__ip_local_out+0x48a/0x970 net/ipv4/ip_output.c:116
ip_local_out net/ipv4/ip_output.c:125 [inline]
ip_send_skb net/ipv4/ip_output.c:1486 [inline]
ip_push_pending_frames+0x97/0x2a0 net/ipv4/ip_output.c:1506
ip_send_unicast_reply+0xc91/0x1410 net/ipv4/ip_output.c:1649
tcp_v4_send_reset+0x127c/0x2b60 net/ipv4/tcp_ipv4.c:840
tcp_v4_rcv+0x2706/0x3b40 net/ipv4/tcp_ipv4.c:2178
ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2e6/0x520 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:304 [inline]
NF_HOOK include/linux/netfilter.h:298 [inline]
ip_local_deliver+0x1be/0x540 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:468 [inline]
ip_rcv_finish+0x1c4/0x2e0 net/ipv4/ip_input.c:449
NF_HOOK include/linux/netfilter.h:304 [inline]
NF_HOOK include/linux/netfilter.h:298 [inline]
ip_rcv+0xc8/0x410 net/ipv4/ip_input.c:569
__netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5523
__netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5637
process_backlog+0x101/0x6c0 net/core/dev.c:5965
__napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6527
napi_poll net/core/dev.c:6594 [inline]
net_rx_action+0x956/0xe90 net/core/dev.c:6727
__do_softirq+0x218/0x965 kernel/softirq.c:553
do_softirq kernel/softirq.c:454 [inline]
do_softirq+0xaa/0xe0 kernel/softirq.c:441
__local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381
neigh_periodic_work+0x689/0xb60 net/core/neighbour.c:1006
process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304