rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=437/1/0x4000000000000000 softirq=103112/103113 fqs=401
(detected by 0, t=10502 jiffies, g=141177, q=229)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26519 Comm: syz-executor.3 Not tainted 5.17.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:220 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0xa0 kernel/kcov.c:287
Code: c1 e0 03 48 83 c8 18 48 89 34 01 4c 89 44 f9 18 49 ff c2 4c 89 11 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 4c 8b 04 24 <65> 48 8b 14 25 80 6f 02 00 65 8b 05 74 d1 7c 7e a9 00 01 ff 00 74
RSP: 0018:ffffc90000dc0cf0 EFLAGS: 00000046
RAX: ffffffff8174c1c1 RBX: 0000000000000001 RCX: ffff88804bcc9d00
RDX: 0000000000010001 RSI: 0000000000000001 RDI: 0000000000000007
RBP: ffffc90000dc0e78 R08: ffffffff8174c1d9 R09: ffffed1017365499
R10: ffffed1017365499 R11: 0000000000000000 R12: ffff8880b9b2a4c0
R13: dffffc0000000000 R14: ffffc90000dc0e00 R15: ffff88804309f340
FS: 00005555565dd400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000076c73000 CR4: 00000000003506e0
Call Trace:
cpu_max_bits_warn include/linux/cpumask.h:108 [inline]
cpumask_check include/linux/cpumask.h:115 [inline]
cpumask_test_cpu include/linux/cpumask.h:379 [inline]
cpu_online include/linux/cpumask.h:921 [inline]
trace_hrtimer_expire_entry+0x29/0x270 include/trace/events/timer.h:232
__run_hrtimer kernel/time/hrtimer.c:1682 [inline]
__hrtimer_run_queues+0x497/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: e1 50 fd ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ae cf 48 f7 48 89 df e8 e6 80 4a f7 e8 91 17 6e f7 fb bf 01 00 00 00 e6 d0 3c f7 65 8b 05 07 47 e4 75 85 c0 74 02 5b c3 e8 ec 2d e2
RSP: 0018:ffffc9000435fe90 EFLAGS: 00000286
RAX: 15ea3c5cc9170100 RBX: ffff88804be3d340 RCX: ffffffff90bf6803
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff818c4030 R09: ffffed10097c7a69
R10: ffffed10097c7a69 R11: 0000000000000000 R12: 1ffff11004468885
R13: 1ffff11004468884 R14: ffff88802234442c R15: ffff88804bcc9d00
spin_unlock_irq include/linux/spinlock.h:399 [inline]
do_group_exit+0x29f/0x2b0 kernel/exit.c:932
__do_sys_exit_group+0x13/0x20 kernel/exit.c:946
__se_sys_exit_group+0x10/0x10 kernel/exit.c:944
__x64_sys_exit_group+0x37/0x40 kernel/exit.c:944
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f31b4059049
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:00007ffcd9737328 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f31b4059049
RDX: 00007f31b400bc8b RSI: ffffffffffffffb8 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007f31b4170340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcd9737410
rcu: rcu_preempt kthread starved for 9700 jiffies! g141177 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:26448 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0x926/0x1080 kernel/sched/core.c:6304
schedule+0x12b/0x1f0 kernel/sched/core.c:6377
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1963
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2136
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc8-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation+0x1ff/0x270 kernel/rcu/tree_stall.h:458
print_other_cpu_stall kernel/rcu/tree_stall.h:563 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:706 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq+0x2390/0x2b70 kernel/rcu/tree.c:2617
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:116 [inline]
RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:556 [inline]
RIP: 0010:acpi_idle_enter+0x42d/0x790 drivers/acpi/processor_idle.c:692
Code: fd 48 83 e3 08 44 8b 7c 24 04 0f 85 22 01 00 00 4c 8d 74 24 40 e8 d3 ab 0d fd eb 0c e8 bc 05 07 fd 0f 00 2d 25 84 64 06 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 23 00 74 08 4c 89 f7 e8 ad b5 53 fd
RSP: 0018:ffffffff8c807ba0 EFLAGS: 00000286
RAX: 349e7938813c5a00 RBX: 0000000000000000 RCX: ffffffff90bf6803
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffffff8c807c50 R08: ffffffff818c4030 R09: fffffbfff19176d9
R10: fffffbfff19176d9 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88801213c064 R14: ffffffff8c807be0 R15: 0000000000000001
cpuidle_enter_state+0x507/0xea0 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:158 [inline]
cpuidle_idle_call kernel/sched/idle.c:239 [inline]
do_idle+0x3e8/0x670 kernel/sched/idle.c:306
cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403
start_kernel+0x4bf/0x56e init/main.c:1138
secondary_startup_64_no_verify+0xc4/0xcb
----------------
Code disassembly (best guess):
0: c1 e0 03 shl $0x3,%eax
3: 48 83 c8 18 or $0x18,%rax
7: 48 89 34 01 mov %rsi,(%rcx,%rax,1)
b: 4c 89 44 f9 18 mov %r8,0x18(%rcx,%rdi,8)
10: 49 ff c2 inc %r10
13: 4c 89 11 mov %r10,(%rcx)
16: c3 retq
17: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
1e: 00 00 00
21: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
26: 4c 8b 04 24 mov (%rsp),%r8
* 2a: 65 48 8b 14 25 80 6f mov %gs:0x26f80,%rdx <-- trapping instruction
31: 02 00
33: 65 8b 05 74 d1 7c 7e mov %gs:0x7e7cd174(%rip),%eax # 0x7e7cd1ae
3a: a9 00 01 ff 00 test $0xff0100,%eax
3f: 74 .byte 0x74