rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P16502/1:b..l
(detected by 0, t=10502 jiffies, g=84217, q=709)
task:syz.9.4408 state:R running task stack:24376 pid:16502 ppid: 15880 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6549
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6574
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__local_bh_enable_ip+0x175/0x1f0 kernel/softirq.c:390
rcu_read_unlock_bh include/linux/rcupdate.h:809 [inline]
__dev_queue_xmit+0x1bf8/0x32b0 net/core/dev.c:4283
__bpf_tx_skb net/core/filter.c:2118 [inline]
__bpf_redirect_no_mac net/core/filter.c:2152 [inline]
__bpf_redirect+0x79c/0xe90 net/core/filter.c:2175
____bpf_clone_redirect net/core/filter.c:2444 [inline]
bpf_clone_redirect+0x249/0x360 net/core/filter.c:2414
bpf_prog_973cd02a7a0e8181+0x56/0xf30
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:621 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x5f4/0x8a0 net/bpf/test_run.c:119
bpf_prog_test_run_skb+0xb41/0x1420 net/bpf/test_run.c:669
bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3373
__sys_bpf+0x3ac/0x670 kernel/bpf/syscall.c:4674
__do_sys_bpf kernel/bpf/syscall.c:4760 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4758 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4758
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3215683d29
RSP: 002b:00007f32134f4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f3215873fa0 RCX: 00007f3215683d29
RDX: 000000000000002c RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007f32156ffb08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3215873fa0 R15: 00007ffcda077698
rcu: rcu_preempt kthread starved for 10504 jiffies! g84217 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:26400 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 16519 Comm: syz.0.4415 Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487
print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:592
check_cpu_stall kernel/rcu/tree_stall.h:745 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq+0xa38/0x1150 kernel/rcu/tree.c:2619
update_process_times+0x196/0x200 kernel/time/timer.c:1818
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:unwind_next_frame+0x1326/0x1fa0
Code: df 0f 84 8f 03 00 00 48 8b 44 24 38 0f b6 04 10 84 c0 0f 85 03 08 00 00 8b 44 24 74 41 39 07 48 8b 7c 24 40 0f 85 07 01 00 00 <48> 8b 44 24 48 80 3c 10 00 74 0f e8 ea b0 91 00 48 ba 00 00 00 00
RSP: 0018:ffffc90000006d28 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffc90000006e18
RBP: ffffffff8e8bf506 R08: ffffc900000071b0 R09: ffffc90000006e30
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1d17ea0
R13: 1ffffffff1d17ea0 R14: ffffffff8e8bf502 R15: ffffc90000006de0
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
packet_rcv+0x151/0x1210 net/packet/af_packet.c:2243
dev_queue_xmit_nit+0x9bb/0xae0 net/core/dev.c:2342
xmit_one net/core/dev.c:3612 [inline]
dev_hard_start_xmit+0x137/0x7a0 net/core/dev.c:3633
sch_direct_xmit+0x2b2/0x5e0 net/sched/sch_generic.c:342
__dev_xmit_skb net/core/dev.c:3852 [inline]
__dev_queue_xmit+0x1861/0x32b0 net/core/dev.c:4221
neigh_hh_output include/net/neighbour.h:493 [inline]
neigh_output include/net/neighbour.h:507 [inline]
ip6_finish_output2+0xead/0x15a0 net/ipv6/ip6_output.c:130
dst_output include/net/dst.h:443 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
ndisc_send_skb+0xae0/0x13c0 net/ipv6/ndisc.c:511
addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_lock_switch+0x91/0x100 kernel/sched/core.c:4782
Code: 45 31 c9 68 c7 ba 59 81 e8 1c 12 09 00 48 83 c4 08 4c 89 ff e8 90 db fe ff 66 90 4c 89 ff e8 b6 01 ef 08 e8 41 48 2d 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 87
RSP: 0018:ffffc900033bf718 EFLAGS: 00000282
RAX: 382dbfdbe90cf100 RBX: ffff888026fb0034 RCX: ffffffff81633db8
RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f340
RBP: ffffc900033bf790 R08: dffffc0000000000 R09: fffffbfff2131422
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff110171c760b R14: ffff8880b8e3b058 R15: ffff8880b8e3a300
finish_task_switch+0x134/0x630 kernel/sched/core.c:4899
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12cc/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6515
mutex_optimistic_spin+0x299/0x300 kernel/locking/mutex.c:503
__mutex_lock_common+0x1ff/0x25a0 kernel/locking/mutex.c:599
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
swevent_hlist_get kernel/events/core.c:9866 [inline]
perf_swevent_init+0x133/0x620 kernel/events/core.c:9926
perf_try_init_event+0x135/0x3e0 kernel/events/core.c:11553
perf_init_event kernel/events/core.c:11630 [inline]
perf_event_alloc+0x121a/0x2180 kernel/events/core.c:11909
__do_sys_perf_event_open kernel/events/core.c:12447 [inline]
__se_sys_perf_event_open+0xb27/0x4510 kernel/events/core.c:12339
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5863126d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5860f76038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f5863317080 RCX: 00007f5863126d29
RDX: afffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f58631a2b08 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5863317080 R15: 00007ffd383ebaa8