INFO: task kworker/u4:6:9007 blocked for more than 143 seconds.
Not tainted 5.4.0-rc1+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:6 D24128 9007 2 0x80004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:3384 [inline]
__schedule+0x94f/0x1e70 kernel/sched/core.c:4069
schedule+0xd9/0x260 kernel/sched/core.c:4136
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4195
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
ip6gre_exit_batch_net+0x8e/0x750 net/ipv6/ip6_gre.c:1601
ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:175
cleanup_net+0x4e7/0xa70 net/core/net_namespace.c:595
process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
worker_thread+0x98/0xe40 kernel/workqueue.c:2415
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
INFO: task syz-executor.3:25847 blocked for more than 143 seconds.
Not tainted 5.4.0-rc1+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D26736 25847 8911 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3384 [inline]
__schedule+0x94f/0x1e70 kernel/sched/core.c:4069
schedule+0xd9/0x260 kernel/sched/core.c:4136
exp_funnel_lock kernel/rcu/tree_exp.h:308 [inline]
synchronize_rcu_expedited+0x57f/0x5f0 kernel/rcu/tree_exp.h:817
synchronize_net+0x3b/0x60 net/core/dev.c:9319
rollback_registered_many+0xb2c/0xfc0 net/core/dev.c:8285
unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9364
unregister_netdevice_many+0x3b/0x50 net/core/dev.c:9363
ip6_tnl_exit_batch_net+0x50c/0x6f0 net/ipv6/ip6_tunnel.c:2267
ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:175
setup_net+0x521/0x880 net/core/net_namespace.c:358
copy_net_ns+0x290/0x420 net/core/net_namespace.c:476
create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:103
unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:202
ksys_unshare+0x444/0x980 kernel/fork.c:2827
__do_sys_unshare kernel/fork.c:2895 [inline]
__se_sys_unshare kernel/fork.c:2893 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2893
do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a59
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00007fd5e3672c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459a59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd5e36736d4
R13: 00000000004c94ad R14: 00000000004e0bc0 R15: 00000000ffffffff
INFO: task syz-executor.5:25850 blocked for more than 143 seconds.
Not tainted 5.4.0-rc1+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D27264 25850 8916 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3384 [inline]
__schedule+0x94f/0x1e70 kernel/sched/core.c:4069
schedule+0xd9/0x260 kernel/sched/core.c:4136
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4195
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
netdev_run_todo+0x4d4/0x7d0 net/core/dev.c:9047
rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:112
ip_tunnel_delete_nets+0x423/0x5f0 net/ipv4/ip_tunnel.c:1114
vti_exit_batch_net+0x23/0x30 net/ipv4/ip_vti.c:474
ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:175
setup_net+0x521/0x880 net/core/net_namespace.c:358
copy_net_ns+0x290/0x420 net/core/net_namespace.c:476
create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:103
unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:202
ksys_unshare+0x444/0x980 kernel/fork.c:2827
__do_sys_unshare kernel/fork.c:2895 [inline]
__se_sys_unshare kernel/fork.c:2893 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2893
do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a59
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00007fe17fd40c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459a59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe17fd416d4
R13: 00000000004c94ad R14: 00000000004e0bc0 R15: 00000000ffffffff
INFO: task syz-executor.2:25890 blocked for more than 144 seconds.
Not tainted 5.4.0-rc1+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D28592 25890 8909 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3384 [inline]
__schedule+0x94f/0x1e70 kernel/sched/core.c:4069
schedule+0xd9/0x260 kernel/sched/core.c:4136
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4195
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
gtp_net_exit+0x1cd/0x3a0 drivers/net/gtp.c:1335
ops_exit_list.isra.0+0xaa/0x150 net/core/net_namespace.c:172
setup_net+0x521/0x880 net/core/net_namespace.c:358
copy_net_ns+0x290/0x420 net/core/net_namespace.c:476
create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:103
unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:202
ksys_unshare+0x444/0x980 kernel/fork.c:2827
__do_sys_unshare kernel/fork.c:2895 [inline]
__se_sys_unshare kernel/fork.c:2893 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2893
do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a59
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00007ff2cef97c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459a59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff2cef986d4
R13: 00000000004c94ad R14: 00000000004e0bc0 R15: 00000000ffffffff
INFO: task syz-executor.2:25892 blocked for more than 144 seconds.
Not tainted 5.4.0-rc1+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D28560 25892 8909 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3384 [inline]
__schedule+0x94f/0x1e70 kernel/sched/core.c:4069
schedule+0xd9/0x260 kernel/sched/core.c:4136
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4195
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
gtp_net_exit+0x1cd/0x3a0 drivers/net/gtp.c:1335
ops_exit_list.isra.0+0xaa/0x150 net/core/net_namespace.c:172
setup_net+0x521/0x880 net/core/net_namespace.c:358
copy_net_ns+0x290/0x420 net/core/net_namespace.c:476
create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:103
unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:202
ksys_unshare+0x444/0x980 kernel/fork.c:2827
__do_sys_unshare kernel/fork.c:2895 [inline]
__se_sys_unshare kernel/fork.c:2893 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2893
do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a59
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00007ff2cef76c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459a59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff2cef776d4
R13: 00000000004c94ad R14: 00000000004e0bc0 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1062:
#0: ffffffff88faae00 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5337
2 locks held by getty/8865:
#0: ffff888091db2dd0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f2d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/8866:
#0: ffff88808d056250 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f212e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/8867:
#0: ffff888090674990 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f392e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/8868:
#0: ffff88808cefd390 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f252e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/8869:
#0: ffff88808d337410 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f352e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/8870:
#0: ffff8880a7af6690 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f432e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/8871:
#0: ffff888090f62090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90005f112e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
4 locks held by kworker/u4:6/9007:
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline]
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline]
#0: ffff8880a99abe68 ((wq_completion)netns){+.+.}, at: process_one_work+0x88b/0x1740 kernel/workqueue.c:2240
#1: ffff888068a0fdc0 (net_cleanup_work){+.+.}, at: process_one_work+0x8c1/0x1740 kernel/workqueue.c:2244
#2: ffffffff8998af48 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0xa70 net/core/net_namespace.c:557
#3: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
3 locks held by kworker/u4:4/15305:
#0: ffff8880ae934d18 (&rq->lock){-.-.}, at: newidle_balance+0xa32/0xe90 kernel/sched/fair.c:9817
#1: ffffffff88faae00 (rcu_read_lock){....}, at: __update_idle_core+0x45/0x3f0 kernel/sched/fair.c:5825
#2: ffffffff88faae00 (rcu_read_lock){....}, at: spin_lock_bh include/linux/spinlock.h:343 [inline]
#2: ffffffff88faae00 (rcu_read_lock){....}, at: batadv_nc_purge_paths+0xd8/0x370 net/batman-adv/network-coding.c:441
3 locks held by kworker/0:0/19773:
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline]
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline]
#0: ffff88809c962ba8 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x88b/0x1740 kernel/workqueue.c:2240
#1: ffff888060e8fdc0 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8c1/0x1740 kernel/workqueue.c:2244
#2: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
2 locks held by syz-executor.3/25847:
#0: ffffffff8998af48 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x26d/0x420 net/core/net_namespace.c:472
#1: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
2 locks held by syz-executor.5/25850:
#0: ffffffff8998af48 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x26d/0x420 net/core/net_namespace.c:472
#1: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
2 locks held by syz-executor.2/25890:
#0: ffffffff8998af48 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x26d/0x420 net/core/net_namespace.c:472
#1: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
2 locks held by syz-executor.2/25892:
#0: ffffffff8998af48 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x26d/0x420 net/core/net_namespace.c:472
#1: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1062 Comm: khungtaskd Not tainted 5.4.0-rc1+ #0
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+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x23b/0x28b 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:205 [inline]
watchdog+0x9d0/0xef0 kernel/hung_task.c:289
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 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 5.4.0-rc1+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:idr_find+0x0/0x60 lib/idr.c:173
Code: 44 24 48 4c 89 e7 31 d2 48 29 c3 48 89 de e8 b7 fc 00 00 5b 41 5c 5d c3 e8 5d c3 6d fa eb df 90 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 54 49 89 fc 53 48 89 f3 e8 1e 6b 32 fa 49 8d 7c 24
RSP: 0018:ffff8880ae909c48 EFLAGS: 00000006
RAX: ffff8880a98e0340 RBX: 0000000000000004 RCX: ffffffff814b2770
RDX: 0000000000000100 RSI: 0000000000000004 RDI: ffffffff88f7b3a0
RBP: ffff8880ae909c60 R08: ffff8880a98e0340 R09: ffffed1015d26b75
R10: ffffed1015d26b74 R11: ffff8880ae935ba3 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888060d21d98 R15: ffff88809c62e0c0
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c427c1a2a0 CR3: 00000000a0b97000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__queue_work+0x246/0x1280 kernel/workqueue.c:1433
delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1616
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1444 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x48c/0x1790 kernel/time/timer.c:1786
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 78 4c 67 fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 43 61 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 43 61 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 fe bd 19 fa e8 49
RSP: 0018:ffff8880a98efd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11e63a7 RBX: ffff8880a98e0340 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a98e0bd4
RBP: ffff8880a98efd98 R08: ffff8880a98e0340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff89c5bb40 R14: 0000000000000000 R15: 0000000000000001
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
default_idle_call+0x84/0xb0 kernel/sched/idle.c:94
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x3b7/0x6e0 kernel/sched/idle.c:263
cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355
start_secondary+0x2f4/0x410 arch/x86/kernel/smpboot.c:264
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241