IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_0
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
rcu: 1-...!: (1 ticks this GP) idle=02a/1/0x4000000000000002 softirq=11452/11452 fqs=0
rcu: 1-...!: (1223 ticks this GP) idle=02a/1/0x4000000000000002 softirq=9940/11452 fqs=0
rcu:
rcu:
(t=15765 jiffies g=4837 q=4598)
(detected by 0, t=15765 jiffies, g=-1031, q=10)
rcu: rcu_preempt kthread starved for 15765 jiffies! g4837 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
Sending NMI from CPU 0 to CPUs 1:
rcu: RCU grace-period kthread stack dump:
NMI backtrace for cpu 1
CPU: 1 PID: 7724 Comm: syz-executor.2 Not tainted 4.19.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:io_serial_in+0x60/0x90 drivers/tty/serial/8250/8250_port.c:450
Code: 0f b6 8b e1 00 00 00 48 8d 7b 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e6 80 3c 02 00 75 1d 03 73 38 89 f2 ec <48> 83 c4 08 0f b6 c0 5b 5d c3 89 75 f4 e8 be 7c 1c fe 8b 75 f4 eb
RSP: 0018:ffff8800aeb07950 EFLAGS: 00000006
RAX: dffffc0000000005 RBX: ffffffff8aba5cc0 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: 00000000000003f9 RDI: ffffffff8aba5cf8
RBP: ffff8800aeb07960 R08: fffffbfff1574b99 R09: fffffbfff1574b98
R10: fffffbfff1574b98 R11: ffffffff8aba5cc3 R12: ffffffff8aba5ee0
R13: dffffc0000000000 R14: ffffffff8aba5cc0 R15: ffffffff8aba5d08
FS: 00007f36298c9700(0000) GS:ffff8800aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd112af2bf8 CR3: 000000009058c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_port_in include/linux/serial_core.h:268 [inline]
serial8250_console_write+0x248/0x880 drivers/tty/serial/8250/8250_port.c:3252
univ8250_console_write+0x4e/0x70 drivers/tty/serial/8250/8250_core.c:590
call_console_drivers kernel/printk/printk.c:1724 [inline]
console_unlock+0x845/0xdf0 kernel/printk/printk.c:2405
vprintk_emit+0x334/0x4f0 kernel/printk/printk.c:1922
vprintk_default+0x1a/0x20 kernel/printk/printk.c:1963
vprintk_func+0x42/0x125 kernel/printk/printk_safe.c:398
printk+0x9a/0xc0 kernel/printk/printk.c:1996
rcu_check_gp_kthread_starvation+0x25d/0x2c0 kernel/rcu/tree.c:1317
print_cpu_stall kernel/rcu/tree.c:1476 [inline]
check_cpu_stall kernel/rcu/tree.c:1550 [inline]
__rcu_pending kernel/rcu/tree.c:3276 [inline]
rcu_pending kernel/rcu/tree.c:3319 [inline]
rcu_check_callbacks.cold.61+0x5b5/0xd3d kernel/rcu/tree.c:2665
update_process_times+0x2a/0x60 kernel/time/timer.c:1636
tick_sched_handle.isra.5+0x6b/0x130 kernel/time/tick-sched.c:164
tick_sched_timer+0x3c/0xf0 kernel/time/tick-sched.c:1274
__run_hrtimer kernel/time/hrtimer.c:1398 [inline]
__hrtimer_run_queues+0x2fa/0xaa0 kernel/time/hrtimer.c:1460
hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1518
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline]
smp_apic_timer_interrupt+0x114/0x530 arch/x86/kernel/apic/apic.c:1054
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:on_each_cpu+0x13c/0x180 kernel/smp.c:607
Code: 48 9c 51 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 43 48 83 3d a3 08 fb 06 00 74 19 48 89 df 57 9d <0f> 1f 44 00 00 eb a6 0f 0b 0f 0b 0f 0b e8 8d c0 a9 ff eb ae 0f 0b
RSP: 0018:ffff88008fc17d30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000
RDX: 1ffffffff10a3389 RSI: 0000000000000004 RDI: 0000000000000282
RBP: ffff88008fc17d50 R08: ffffed0015d64b79 R09: ffffed0015d64b78
R10: ffffed0015d64b78 R11: ffff8800aeb25bc3 R12: ffffffff8152ca80
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000282
clock_was_set+0x17/0x20 kernel/time/hrtimer.c:861
do_settimeofday64+0x24a/0x320 kernel/time/timekeeping.c:1270
do_sys_settimeofday64+0x154/0x1d0 kernel/time/time.c:196
posix_clock_realtime_set+0xe/0x10 kernel/time/posix-timers.c:199
__do_sys_clock_settime kernel/time/posix-timers.c:1053 [inline]
__se_sys_clock_settime+0xcf/0x140 kernel/time/posix-timers.c:1041
__x64_sys_clock_settime+0x4f/0x70 kernel/time/posix-timers.c:1041
do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cba9
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f36298c8c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00000000004dbd60 RCX: 000000000045cba9
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000000
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000007b R14: 00000000004c352c R15: 00007f36298c96d4
rcu: rcu_sched kthread starved for 15765 jiffies! g-1031 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu_preempt I
rcu: RCU grace-period kthread stack dump:
rcu_sched I
29608 10 2 0x80000000
30080 11 2 0x80000000
Call Trace:
Call Trace:
context_switch kernel/sched/core.c:2825 [inline]
__schedule+0x80c/0x1f20 kernel/sched/core.c:3473
context_switch kernel/sched/core.c:2825 [inline]
__schedule+0x80c/0x1f20 kernel/sched/core.c:3473
schedule+0x7f/0x1b0 kernel/sched/core.c:3517
schedule+0x7f/0x1b0 kernel/sched/core.c:3517
schedule_timeout+0x398/0xcc0 kernel/time/timer.c:1804
schedule_timeout+0x398/0xcc0 kernel/time/timer.c:1804
rcu_gp_kthread+0xd30/0x2130 kernel/rcu/tree.c:2194
rcu_gp_kthread+0xd30/0x2130 kernel/rcu/tree.c:2194
kthread+0x324/0x3e0 kernel/kthread.c:246
kthread+0x324/0x3e0 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:413
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:413
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
NMI backtrace for cpu 1
1-...
CPU: 1 PID: 7724 Comm: syz-executor.2 Not tainted 4.19.0-rc6-syzkaller #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+0x15a/0x20d lib/dump_stack.c:113
nmi_cpu_backtrace.cold.0+0x3c/0x78 lib/nmi_backtrace.c:101
} 15765 jiffies s: 297 root: 0x2/.
nmi_trigger_cpumask_backtrace+0xf5/0x119 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline]
rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340
rcu: blocking rcu_node structures:
print_cpu_stall kernel/rcu/tree.c:1478 [inline]
check_cpu_stall kernel/rcu/tree.c:1550 [inline]
__rcu_pending kernel/rcu/tree.c:3276 [inline]
rcu_pending kernel/rcu/tree.c:3319 [inline]
rcu_check_callbacks.cold.61+0x5bd/0xd3d kernel/rcu/tree.c:2665
Task dump for CPU 1:
syz-executor.2 R
update_process_times+0x2a/0x60 kernel/time/timer.c:1636
running task
tick_sched_handle.isra.5+0x6b/0x130 kernel/time/tick-sched.c:164
tick_sched_timer+0x3c/0xf0 kernel/time/tick-sched.c:1274
__run_hrtimer kernel/time/hrtimer.c:1398 [inline]
__hrtimer_run_queues+0x2fa/0xaa0 kernel/time/hrtimer.c:1460
29648 7724 6442 0x8000000c
Call Trace:
hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1518
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline]
smp_apic_timer_interrupt+0x114/0x530 arch/x86/kernel/apic/apic.c:1054
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x814/0x1f20 kernel/sched/core.c:3473
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:on_each_cpu+0x13c/0x180 kernel/smp.c:607
Code: 48 9c 51 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 43 48 83 3d a3 08 fb 06 00 74 19 48 89 df 57 9d <0f> 1f 44 00 00 eb a6 0f 0b 0f 0b 0f 0b e8 8d c0 a9 ff eb ae 0f 0b
RSP: 0018:ffff88008fc17d30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000
RDX: 1ffffffff10a3389 RSI: 0000000000000004 RDI: 0000000000000282
RBP: ffff88008fc17d50 R08: ffffed0015d64b79 R09: ffffed0015d64b78
R10: ffffed0015d64b78 R11: ffff8800aeb25bc3 R12: ffffffff8152ca80
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000282
clock_was_set+0x17/0x20 kernel/time/hrtimer.c:861
do_settimeofday64+0x24a/0x320 kernel/time/timekeeping.c:1270
do_sys_settimeofday64+0x154/0x1d0 kernel/time/time.c:196
posix_clock_realtime_set+0xe/0x10 kernel/time/posix-timers.c:199
__do_sys_clock_settime kernel/time/posix-timers.c:1053 [inline]
__se_sys_clock_settime+0xcf/0x140 kernel/time/posix-timers.c:1041
__x64_sys_clock_settime+0x4f/0x70 kernel/time/posix-timers.c:1041
do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cba9
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f36298c8c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00000000004dbd60 RCX: 000000000045cba9
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000000
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000007b R14: 00000000004c352c R15: 00007f36298c96d4
WARNING: CPU: 1 PID: 18 at kernel/fork.c:408 free_task+0xb4/0xd0 kernel/fork.c:415