rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=c31c/1/0x4000000000000000 softirq=25297/25298 fqs=383
rcu: (t=10500 jiffies g=24233 q=835 ncpus=2)
rcu: rcu_preempt kthread starved for 9698 jiffies! g24233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26264 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc1-syzkaller-00182-g0f6ede9fbc74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:kvm_wait+0x250/0x2c0 arch/x86/kernel/kvm.c:1064
Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 4a 79 54 00 e8 a5 42 5c 00 45 38 f7 75 15 66 90 e8 b9 78 54 00 0f 00 2d f2 16 bd 0a fb f4 50 fe ff ff e8 a6 78 54 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38
RSP: 0018:ffffc90000007100 EFLAGS: 00000246
RAX: ffffffff814af967 RBX: ffff88806ae2b0f0 RCX: ffffffff8e6965c0
RDX: 0000000000000100 RSI: ffffffff8c0a9680 RDI: ffffffff8c5f63e0
RBP: ffffc900000071d0 R08: ffffffff942b8a0f R09: 1ffffffff2857141
R10: dffffc0000000000 R11: fffffbfff2857142 R12: 1ffff92000000e24
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555a7345c8 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:596 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline]
__pv_queued_spin_lock_slowpath+0x8d0/0xdb0 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
spin_lock include/linux/spinlock.h:351 [inline]
__dev_xmit_skb net/core/dev.c:3863 [inline]
__dev_queue_xmit+0xdff/0x3f50 net/core/dev.c:4400
neigh_output include/net/neighbour.h:539 [inline]
ip6_finish_output2+0x12c7/0x17b0 net/ipv6/ip6_output.c:141
ip6_finish_output+0x41e/0x840 net/ipv6/ip6_output.c:226
NF_HOOK include/linux/netfilter.h:314 [inline]
ndisc_send_skb+0xb30/0x1450 net/ipv6/ndisc.c:511
addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4061
call_timer_fn+0x187/0x650 kernel/time/timer.c:1793
expire_timers kernel/time/timer.c:1844 [inline]
__run_timers kernel/time/timer.c:2418 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
run_timer_base kernel/time/timer.c:2439 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d6 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d b5 b2 98 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e607ca8 EFLAGS: 00000246
RAX: ffffffff8e6965c0 RBX: ffff888143af8864 RCX: 00000000000274b9
RDX: 0000000000000001 RSI: ffff888143af8800 RDI: ffff888143af8864
RBP: 000000000003a9f8 R08: ffff8880b8637cdb R09: 1ffff110170c6f9b
R10: dffffc0000000000 R11: ffffffff8bd07fc0 R12: ffff888147aac000
R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f11eba0
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:699
cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:268
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:389
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x372/0x5c0 kernel/sched/idle.c:325
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
rest_init+0x2dc/0x300 init/main.c:747
start_kernel+0x47f/0x500 init/main.c:1102
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
CPU: 1 UID: 0 PID: 10166 Comm: modprobe Not tainted 6.13.0-rc1-syzkaller-00182-g0f6ede9fbc74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2f/0x70 kernel/kcov.c:217
Code: 8b 04 24 65 48 8b 0c 25 00 d6 03 00 65 8b 15 d0 63 64 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 <74> 2c 8b 91 f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b
RSP: 0000:ffffc9000349fa60 EFLAGS: 00000246
RAX: ffffffff89d57bfd RBX: 0000000000000000 RCX: ffff88805ac7bc00
RDX: 0000000000000100 RSI: 0000000000000010 RDI: 0000000000000006
RBP: ffff88805dfc8040 R08: ffffffff89d57b7e R09: 1ffffffff2857110
R10: dffffc0000000000 R11: ffffffff89c774d0 R12: dffffc0000000000
R13: ffff88806ae2b390 R14: 0000000000000000 R15: ffff88805dfc803e
FS: 00007f7cc76a4380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7cc78988e5 CR3: 0000000079e98000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
taprio_dequeue_tc_priority+0x2ed/0x7a0 net/sched/sch_taprio.c:797
taprio_dequeue+0x186/0x550
try_bulk_dequeue_skb_slow net/sched/sch_generic.c:212 [inline]
dequeue_skb net/sched/sch_generic.c:299 [inline]
qdisc_restart net/sched/sch_generic.c:398 [inline]
__qdisc_run+0x306/0x2180 net/sched/sch_generic.c:416
qdisc_run+0xda/0x270 include/net/pkt_sched.h:127
net_tx_action+0x896/0xa50 net/core/dev.c:5334
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x57/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7f7cc79c8bb7
Code: 00 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d b9 46 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 99 46 01 00 f7 d8 89 01 48 83
RSP: 002b:00007fff5d334b58 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00007f7cc79dcab0 RCX: 00007f7cc79c8bb7
RDX: 0000000000000001 RSI: 0000000000002000 RDI: 00007f7cc79da000
RBP: 00007fff5d334c70 R08: 00007fff5d330000 R09: 00007f7cc79a55c0
R10: 00007f7cc79ad858 R11: 0000000000000206 R12: 00007f7cc79dcab0
R13: 00007f7cc79d0eda R14: 00007f7cc79db9f0 R15: 00007f7cc79dbf40
sched: DL replenish lagged too much