rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10501 ticks this GP) idle=71d/1/0x4000000000000000 softirq=204456/204456 fqs=0
(t=10502 jiffies g=258013 q=293)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10502 jiffies! g258013 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=151500
rcu: rcu_preempt kthread starved for 10505 jiffies! g258013 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:28376 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: 15426 Comm: syz-executor.2 Not tainted 5.18.0-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: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:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:200
Code: 00 00 e9 26 41 7e 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 09 2f 89 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 00 70 02 00 a9 00 01 ff 00 74 0e
RSP: 0018:ffffc900123e7400 EFLAGS: 00000217
RAX: 0000000000000201 RBX: ffff88804af682c0 RCX: 0000000000000201
RDX: 0000000000000000 RSI: ffffffff877e4c71 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: ffffffff877e4c8d R11: 0000000000000000 R12: 0000000000000017
R13: 0000000000000300 R14: ffff888050200000 R15: ffff88804af68000
cake_drop net/sched/sch_cake.c:1515 [inline]
cake_enqueue+0x13a1/0x3a00 net/sched/sch_cake.c:1903
dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3727
__dev_xmit_skb net/core/dev.c:3816 [inline]
__dev_queue_xmit+0x2038/0x3920 net/core/dev.c:4141
__bpf_tx_skb net/core/filter.c:2113 [inline]
__bpf_redirect_no_mac net/core/filter.c:2138 [inline]
__bpf_redirect+0x83f/0xe60 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_a125b4b2adfd2a01+0x59/0x5e
bpf_dispatcher_nop_func include/linux/bpf.h:804 [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+0xb67/0x1e20 net/bpf/test_run.c:1111
bpf_prog_test_run kernel/bpf/syscall.c:3369 [inline]
__sys_bpf+0x183c/0x55d0 kernel/bpf/syscall.c:4681
__do_sys_bpf kernel/bpf/syscall.c:4767 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4765 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4765
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: 0033:0x7f7e13a890e9
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:00007f7e14b3d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f7e13b9bf60 RCX: 00007f7e13a890e9
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 000000000000000a
RBP: 00007f7e13ae308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaf586d1f R14: 00007f7e14b3d300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 15426 Comm: syz-executor.2 Not tainted 5.18.0-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: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:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:200
Code: 00 00 e9 26 41 7e 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 09 2f 89 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 00 70 02 00 a9 00 01 ff 00 74 0e
RSP: 0018:ffffc900123e7400 EFLAGS: 00000217
RAX: 0000000000000201 RBX: ffff88804af682c0 RCX: 0000000000000201
RDX: 0000000000000000 RSI: ffffffff877e4c71 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: ffffffff877e4c8d R11: 0000000000000000 R12: 0000000000000017
R13: 0000000000000300 R14: ffff888050200000 R15: ffff88804af68000
cake_drop net/sched/sch_cake.c:1515 [inline]
cake_enqueue+0x13a1/0x3a00 net/sched/sch_cake.c:1903
dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3727
__dev_xmit_skb net/core/dev.c:3816 [inline]
__dev_queue_xmit+0x2038/0x3920 net/core/dev.c:4141
__bpf_tx_skb net/core/filter.c:2113 [inline]
__bpf_redirect_no_mac net/core/filter.c:2138 [inline]
__bpf_redirect+0x83f/0xe60 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_a125b4b2adfd2a01+0x59/0x5e
bpf_dispatcher_nop_func include/linux/bpf.h:804 [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+0xb67/0x1e20 net/bpf/test_run.c:1111
bpf_prog_test_run kernel/bpf/syscall.c:3369 [inline]
__sys_bpf+0x183c/0x55d0 kernel/bpf/syscall.c:4681
__do_sys_bpf kernel/bpf/syscall.c:4767 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4765 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4765
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: 0033:0x7f7e13a890e9
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:00007f7e14b3d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f7e13b9bf60 RCX: 00007f7e13a890e9
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 000000000000000a
RBP: 00007f7e13ae308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaf586d1f R14: 00007f7e14b3d300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: e9 26 41 7e 02 jmpq 0x27e412d
7: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
d: 48 8b be a8 01 00 00 mov 0x1a8(%rsi),%rdi
14: e8 b4 ff ff ff callq 0xffffffcd
19: 31 c0 xor %eax,%eax
1b: c3 retq
1c: 90 nop
1d: 65 8b 05 09 2f 89 7e mov %gs:0x7e892f09(%rip),%eax # 0x7e892f2d
24: 89 c1 mov %eax,%ecx
26: 48 8b 34 24 mov (%rsp),%rsi
* 2a: 81 e1 00 01 00 00 and $0x100,%ecx <-- trapping instruction
30: 65 48 8b 14 25 00 70 mov %gs:0x27000,%rdx
37: 02 00
39: a9 00 01 ff 00 test $0xff0100,%eax
3e: 74 0e je 0x4e