rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10680 ticks this GP) idle=c36c/1/0x4000000000000000 softirq=15518/15521 fqs=182
(t=10500 jiffies g=18233 q=18 ncpus=2)
rcu: rcu_preempt kthread starved for 9393 jiffies! g18233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:26048 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 6.1.122-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_preemption_disabled+0x2/0x110 lib/smp_processor_id.c:13
Code: 3c 8d 48 89 de e8 8e 2a bd f9 e9 6d ff ff ff cc cc cc cc cc cc cc cc cc 48 c7 c7 60 67 5e 8b 48 c7 c6 a0 67 5e 8b eb 00 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc900001e0c48 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880b8f3b499 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffffff8b5e67a0 RDI: ffffffff8b5e6760
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff1d360d6
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000001000007f9
R13: 1ffff110171e768f R14: ffff8880b8f3a9c0 R15: ffff8880b8f3b478
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f04de86c0 CR3: 00000000281a1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
nohz_balance_exit_idle+0xf/0x1c0 kernel/sched/fair.c:11245
nohz_balancer_kick kernel/sched/fair.c:11128 [inline]
trigger_load_balance+0x1a8/0xc90 kernel/sched/fair.c:11705
update_process_times+0x17b/0x1b0 kernel/time/timer.c:1874
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1501
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
__sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
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:112 [inline]
RIP: 0010:acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:567
Code: da cd f6 48 83 e3 08 0f 85 0b 01 00 00 4c 8d 74 24 20 e8 84 97 d4 f6 0f 1f 44 00 00 e8 fa d6 cd f6 0f 00 2d 83 d3 ab 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 9b 6a 25 f7
RSP: 0018:ffffc90000177b80 EFLAGS: 000002d3
RAX: ffffffff8abcc576 RBX: 0000000000000000 RCX: ffff888017fe9dc0
RDX: 0000000000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e67c0
RBP: ffffc90000177c10 R08: ffffffff8abcc558 R09: ffffed1002ffd3b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200002ef70
R13: ffff88801bb56004 R14: ffffc90000177ba0 R15: dffffc0000000000
acpi_idle_enter+0x352/0x4f0 drivers/acpi/processor_idle.c:704
cpuidle_enter_state+0x516/0xf80 drivers/cpuidle/cpuidle.c:239
cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:356
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x3ce/0x680 kernel/sched/idle.c:303
cpu_startup_entry+0x3d/0x60 kernel/sched/idle.c:401
start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xcf/0xdb
CPU: 0 PID: 5808 Comm: syz.5.372 Tainted: G W 6.1.122-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:__local_bh_disable_ip+0x15f/0x210 kernel/softirq.c:339
Code: 24 40 42 80 3c 23 00 74 05 e8 3d ed 8d 00 f6 44 24 41 02 0f 85 a5 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 8b 05 b9 2c ae 7e <25> ff ff ff 7f 44 39 f8 75 42 4c 8b 75 08 4c 89 f7 e8 2b ac 17 00
RSP: 0018:ffffc90005777b60 EFLAGS: 00000206
RAX: 0000000080000200 RBX: 1ffff92000aeef74 RCX: ffffffff97355103
RDX: ffffc9001b445000 RSI: 0000000000000200 RDI: ffffc90005777ba0
RBP: ffffc90005777c38 R08: ffffffff815760d0 R09: fffffbfff1d360d6
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000aeef70 R14: 0000000000000246 R15: 0000000000000200
FS: 00007f32976126c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c53347ab8 CR3: 00000000584d0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
local_bh_disable include/linux/bottom_half.h:20 [inline]
fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline]
fpu__clear_user_states+0x44/0x260 arch/x86/kernel/fpu/core.c:711
handle_signal arch/x86/kernel/signal.c:844 [inline]
arch_do_signal_or_restart+0xd41/0x1a10 arch/x86/kernel/signal.c:873
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f32967ae460
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 4a 82 07 00 e8 25 90 f8 ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007f3297611a78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f3296975fa0 RCX: 00007f3296785d29
RDX: 00007f3297611a80 RSI: 00007f3297611bb0 RDI: 0000000000000021
RBP: 00007f3296801b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3296975fa0 R15: 00007ffec0a1f988