rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10501 ticks this GP) idle=3ed/1/0x4000000000000000 softirq=16806/16806 fqs=0
(t=10502 jiffies g=21121 q=1508)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10502 jiffies! g21121 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=9237
rcu: rcu_preempt kthread starved for 10505 jiffies! g21121 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:I stack:28728 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1971
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2144
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 6369 Comm: syz-executor.2 Not tainted 5.18.0-rc4-syzkaller-01243-gf43f0cd2d9b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:490
print_cpu_stall kernel/rcu/tree_stall.h:634 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:723 [inline]
rcu_pending kernel/rcu/tree.c:3923 [inline]
rcu_sched_clock_irq.cold+0x57/0x8d6 kernel/rcu/tree.c:2625
update_process_times+0x16d/0x200 kernel/time/timer.c:1788
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:cake_heapify+0x221/0x3d0 net/sched/sch_cake.c:1434
Code: c7 89 44 24 08 e8 9f de fc f9 8b 44 24 08 44 39 f0 76 06 44 89 ed 41 89 c6 e8 8b db fc f9 89 de bf ff 1f 00 00 e8 9f dd fc f9 <81> fb ff 1f 00 00 0f 87 a6 00 00 00 e8 6e db fc f9 4c 63 eb 49 81
RSP: 0018:ffffc9000521f3b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000001eb2 RCX: 0000000000001eb2
RDX: 0000000000000000 RSI: ffff888077f10000 RDI: 0000000000000003
RBP: 0000000000000f58 R08: 0000000000001fff R09: 0000000000000000
R10: ffffffff877c4dc1 R11: 0000000000000000 R12: ffff88801d1c02c0
R13: 0000000000001eb1 R14: 0000000000000000 R15: dffffc0000000000
cake_drop net/sched/sch_cake.c:1515 [inline]
cake_enqueue+0x13a7/0x39f0 net/sched/sch_cake.c:1903
dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3732
__dev_xmit_skb net/core/dev.c:3821 [inline]
__dev_queue_xmit+0x2110/0x3a60 net/core/dev.c:4173
dev_queue_xmit include/linux/netdevice.h:2964 [inline]
__bpf_tx_skb net/core/filter.c:2113 [inline]
__bpf_redirect_no_mac net/core/filter.c:2138 [inline]
__bpf_redirect+0x838/0xe50 net/core/filter.c:2161
____bpf_clone_redirect net/core/filter.c:2428 [inline]
bpf_clone_redirect+0x2ae/0x420 net/core/filter.c:2400
bpf_prog_bebbfe2050753572+0x56/0x5b
bpf_dispatcher_nop_func include/linux/bpf.h:853 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x386/0x9d0 net/bpf/test_run.c:402
bpf_prog_test_run_skb+0xb5e/0x1e10 net/bpf/test_run.c:1144
bpf_prog_test_run kernel/bpf/syscall.c:3596 [inline]
__sys_bpf+0x185f/0x56b0 kernel/bpf/syscall.c:4907
__do_sys_bpf kernel/bpf/syscall.c:4993 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4991 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4991
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8ea6e890e9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ea8074168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8ea6f9bf60 RCX: 00007f8ea6e890e9
RDX: 000000000000002c RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007f8ea6ee308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc8f0d4dbf R14: 00007f8ea8074300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 6369 Comm: syz-executor.2 Not tainted 5.18.0-rc4-syzkaller-01243-gf43f0cd2d9b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x262/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:639 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:723 [inline]
rcu_pending kernel/rcu/tree.c:3923 [inline]
rcu_sched_clock_irq.cold+0xa1/0x8d6 kernel/rcu/tree.c:2625
update_process_times+0x16d/0x200 kernel/time/timer.c:1788
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:cake_heapify+0x221/0x3d0 net/sched/sch_cake.c:1434
Code: c7 89 44 24 08 e8 9f de fc f9 8b 44 24 08 44 39 f0 76 06 44 89 ed 41 89 c6 e8 8b db fc f9 89 de bf ff 1f 00 00 e8 9f dd fc f9 <81> fb ff 1f 00 00 0f 87 a6 00 00 00 e8 6e db fc f9 4c 63 eb 49 81
RSP: 0018:ffffc9000521f3b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000001eb2 RCX: 0000000000001eb2
RDX: 0000000000000000 RSI: ffff888077f10000 RDI: 0000000000000003
RBP: 0000000000000f58 R08: 0000000000001fff R09: 0000000000000000
R10: ffffffff877c4dc1 R11: 0000000000000000 R12: ffff88801d1c02c0
R13: 0000000000001eb1 R14: 0000000000000000 R15: dffffc0000000000
cake_drop net/sched/sch_cake.c:1515 [inline]
cake_enqueue+0x13a7/0x39f0 net/sched/sch_cake.c:1903
dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3732
__dev_xmit_skb net/core/dev.c:3821 [inline]
__dev_queue_xmit+0x2110/0x3a60 net/core/dev.c:4173
dev_queue_xmit include/linux/netdevice.h:2964 [inline]
__bpf_tx_skb net/core/filter.c:2113 [inline]
__bpf_redirect_no_mac net/core/filter.c:2138 [inline]
__bpf_redirect+0x838/0xe50 net/core/filter.c:2161
____bpf_clone_redirect net/core/filter.c:2428 [inline]
bpf_clone_redirect+0x2ae/0x420 net/core/filter.c:2400
bpf_prog_bebbfe2050753572+0x56/0x5b
bpf_dispatcher_nop_func include/linux/bpf.h:853 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x386/0x9d0 net/bpf/test_run.c:402
bpf_prog_test_run_skb+0xb5e/0x1e10 net/bpf/test_run.c:1144
bpf_prog_test_run kernel/bpf/syscall.c:3596 [inline]
__sys_bpf+0x185f/0x56b0 kernel/bpf/syscall.c:4907
__do_sys_bpf kernel/bpf/syscall.c:4993 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4991 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4991
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8ea6e890e9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ea8074168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8ea6f9bf60 RCX: 00007f8ea6e890e9
RDX: 000000000000002c RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007f8ea6ee308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc8f0d4dbf R14: 00007f8ea8074300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 89 44 24 08 mov %eax,0x8(%rsp)
4: e8 9f de fc f9 callq 0xf9fcdea8
9: 8b 44 24 08 mov 0x8(%rsp),%eax
d: 44 39 f0 cmp %r14d,%eax
10: 76 06 jbe 0x18
12: 44 89 ed mov %r13d,%ebp
15: 41 89 c6 mov %eax,%r14d
18: e8 8b db fc f9 callq 0xf9fcdba8
1d: 89 de mov %ebx,%esi
1f: bf ff 1f 00 00 mov $0x1fff,%edi
24: e8 9f dd fc f9 callq 0xf9fcddc8
* 29: 81 fb ff 1f 00 00 cmp $0x1fff,%ebx <-- trapping instruction
2f: 0f 87 a6 00 00 00 ja 0xdb
35: e8 6e db fc f9 callq 0xf9fcdba8
3a: 4c 63 eb movslq %ebx,%r13
3d: 49 rex.WB
3e: 81 .byte 0x81