IPVS: ftp: loaded support on port[0] = 21
attempt to access beyond end of device
loop4: rw=1, want=33121, limit=112
INFO: task kworker/u4:0:7 blocked for more than 140 seconds.
Not tainted 4.20.0-rc7-next-20181224 #189
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:0 D16824 7 2 0x80000000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x9de/0x1ed0 kernel/sched/core.c:3472
schedule+0xef/0x370 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
cangw_pernet_exit+0x12/0x30 net/can/gw.c:1005
ops_exit_list.isra.5+0xb0/0x160 net/core/net_namespace.c:153
cleanup_net+0x555/0xb10 net/core/net_namespace.c:551
process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
kthread+0x35a/0x440 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
INFO: task syz-executor5:13531 blocked for more than 140 seconds.
Not tainted 4.20.0-rc7-next-20181224 #189
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5 D21032 13531 8123 0x80000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x9de/0x1ed0 kernel/sched/core.c:3472
schedule+0xef/0x370 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
cangw_pernet_exit+0x12/0x30 net/can/gw.c:1005
ops_exit_list.isra.5+0xb0/0x160 net/core/net_namespace.c:153
setup_net+0x501/0x8d0 net/core/net_namespace.c:331
copy_net_ns+0x2b1/0x4a0 net/core/net_namespace.c:437
create_new_namespaces+0x6ad/0x900 kernel/nsproxy.c:107
unshare_nsproxy_namespaces+0xc3/0x1f0 kernel/nsproxy.c:206
ksys_unshare+0x79c/0x10b0 kernel/fork.c:2539
__do_sys_unshare kernel/fork.c:2607 [inline]
__se_sys_unshare kernel/fork.c:2605 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2605
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4579b9
Code: Bad RIP value.
RSP: 002b:00007f0d68b96c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004579b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0d68b976d4
R13: 00000000004c648e R14: 00000000004db460 R15: 00000000ffffffff
INFO: task syz-executor5:13548 blocked for more than 140 seconds.
Not tainted 4.20.0-rc7-next-20181224 #189
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5 D21360 13548 8123 0x80000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x9de/0x1ed0 kernel/sched/core.c:3472
schedule+0xef/0x370 kernel/sched/core.c:3516
exp_funnel_lock kernel/rcu/tree_exp.h:319 [inline]
_synchronize_rcu_expedited.constprop.59+0x882/0x980 kernel/rcu/tree_exp.h:622
synchronize_rcu_expedited+0x27/0xa0 kernel/rcu/tree_exp.h:762
synchronize_net+0x3b/0x60 net/core/dev.c:9162
rollback_registered_many+0x744/0x1250 net/core/dev.c:8089
unregister_netdevice_many+0xfa/0x4c0 net/core/dev.c:9207
vti6_exit_batch_net+0x4f3/0x730 net/ipv6/ip6_vti.c:1152
ops_exit_list.isra.5+0x105/0x160 net/core/net_namespace.c:156
setup_net+0x501/0x8d0 net/core/net_namespace.c:331
copy_net_ns+0x2b1/0x4a0 net/core/net_namespace.c:437
create_new_namespaces+0x6ad/0x900 kernel/nsproxy.c:107
unshare_nsproxy_namespaces+0xc3/0x1f0 kernel/nsproxy.c:206
ksys_unshare+0x79c/0x10b0 kernel/fork.c:2539
__do_sys_unshare kernel/fork.c:2607 [inline]
__se_sys_unshare kernel/fork.c:2605 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2605
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4579b9
Code: Bad RIP value.
RSP: 002b:00007f0d68b33c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004579b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0d68b346d4
R13: 00000000004c648e R14: 00000000004db460 R15: 00000000ffffffff
Showing all locks held in the system:
4 locks held by kworker/u4:0/7:
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:218 [inline]
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/generated/atomic-instrumented.h:855 [inline]
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/generated/atomic-long.h:40 [inline]
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline]
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
#0: 000000006302ef44 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0xb43/0x1c40 kernel/workqueue.c:2124
#1: 00000000b0f35c8e (net_cleanup_work){+.+.}, at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128
#2: 0000000064f2a320 (pernet_ops_rwsem){++++}, at: cleanup_net+0x13f/0xb10 net/core/net_namespace.c:518
#3: 0000000085244082 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
1 lock held by khungtaskd/1033:
#0: 0000000042cc010e (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4389
1 lock held by rsyslogd/7917:
#0: 00000000cc35e3be (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:795
2 locks held by getty/8006:
#0: 00000000dd63061a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000aa5792ff (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
2 locks held by getty/8007:
#0: 0000000093cb4d8d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000006ab5eb7c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
2 locks held by getty/8008:
#0: 00000000a27be8aa (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000eead6b78 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
2 locks held by getty/8009:
#0: 00000000a72bd880 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000003127f58c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
2 locks held by getty/8010:
#0: 00000000b3368f58 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000063d17dcc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
2 locks held by getty/8011:
#0: 00000000335986ed (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000005bf4e20b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
2 locks held by getty/8012:
#0: 00000000b9760f15 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000005036a3ad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ee0 drivers/tty/n_tty.c:2154
3 locks held by kworker/0:4/9385:
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:218 [inline]
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/generated/atomic-instrumented.h:855 [inline]
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/generated/atomic-long.h:40 [inline]
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline]
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
#0: 000000000cea4b59 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0xb43/0x1c40 kernel/workqueue.c:2124
#1: 00000000afaa4748 ((addr_chk_work).work){+.+.}, at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128
#2: 0000000085244082 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
2 locks held by syz-executor5/13531:
#0: 0000000064f2a320 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x28c/0x4a0 net/core/net_namespace.c:433
#1: 0000000085244082 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
2 locks held by syz-executor5/13548:
#0: 0000000064f2a320 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x28c/0x4a0 net/core/net_namespace.c:433
#1: 0000000085244082 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1033 Comm: khungtaskd Not tainted 4.20.0-rc7-next-20181224 #189
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113
nmi_cpu_backtrace.cold.4+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1c2/0x22c lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0xba1/0x11a0 kernel/hung_task.c:287
kthread+0x35a/0x440 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.20.0-rc7-next-20181224 #189
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__rdmsr arch/x86/include/asm/msr.h:100 [inline]
RIP: 0010:native_read_msr+0x9/0x30 arch/x86/include/asm/msr.h:129
Code: 5b 5d c3 48 c1 e2 20 48 89 d3 8b 16 48 09 c3 48 89 de e8 9a 91 6e 02 48 89 d8 5b 5d c3 0f 1f 40 00 55 89 f9 48 89 e5 53 0f 32 <48> c1 e2 20 48 89 d3 48 09 c3 0f 1f 44 00 00 48 89 d8 5b 5d c3 48
RSP: 0018:ffff8880a946fd08 EFLAGS: 00000082
RAX: 0000000000000000 RBX: 1ffff1101528dfa6 RCX: 000000000000003b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000003b
RBP: ffff8880a946fd10 R08: ffff8880a9460301 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000001000049a3 R14: ffff8880ae71f120 R15: ffff8880ae71f130
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c423509248 CR3: 0000000093444000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
paravirt_read_msr arch/x86/include/asm/paravirt.h:173 [inline]
tsc_verify_tsc_adjust+0x223/0x460 arch/x86/kernel/tsc_sync.c:66
arch_cpu_idle_enter+0xb/0x20 arch/x86/kernel/process.c:541
do_idle+0x120/0x5b0 kernel/sched/idle.c:250
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:353
start_secondary+0x447/0x5f0 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243