rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=85f/1/0x4000000000000000 softirq=93292/93301 fqs=46
(t=10501 jiffies g=128697 q=287)
rcu: rcu_preempt kthread starved for 10409 jiffies! g128697 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:26200 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
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: 26996 Comm: syz-executor.5 Not tainted 5.15.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:kvm_set_cpu_l1tf_flush_l1d+0x0/0x20 arch/x86/include/asm/hardirq.h:67
Code: 89 de e8 13 da f2 02 e9 65 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 e8 3b fe ff ff e9 c6 cd f8 ff 66 0f 1f 44 00 00 <48> c7 c7 a0 e7 87 8a e8 a4 95 e6 08 65 c6 05 de b4 cd 7e 01 c3 66
RSP: 0018:ffffc90005247af8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc90005247b18 RCX: ffff8880541d5940
RDX: 0000000000000000 RSI: ffffffff8ad87960 RDI: ffffffff8ad87920
RBP: 0000000000000000 R08: ffffffff8186a5f5 R09: fffffbfff1bc82b6
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000555556eba480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 0000000052097000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sysvec_apic_timer_interrupt+0x11/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: b1 7e f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 2e c8 3c f7 48 89 df e8 86 1b 3e f7 e8 21 c9 60 f7 fb bf 01 00 00 00 66 59 31 f7 65 8b 05 b7 95 dc 75 85 c0 74 02 5b c3 e8 44 ad da
RSP: 0018:ffffc90005247bc0 EFLAGS: 00000282
RAX: 478a9916941a5400 RBX: ffff88801a3a5340 RCX: ffffffff913d1003
RDX: dffffc0000000000 RSI: ffffffff8a8b0b60 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8186a350 R09: ffffed1003474a69
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021
R13: dffffc0000000000 R14: ffff88801a3a57d8 R15: ffff88801a3a5340
spin_unlock_irq include/linux/spinlock.h:413 [inline]
get_signal+0x13ee/0x14e0 kernel/signal.c:2892
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f7c2ccadae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdcd7a8298 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 00000000001e4353 RCX: 00007f7c2ccadae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7c2cdccf8c
RBP: 0000000000000032 R08: 00007f7c2cdccf8c R09: 00007f7c2cdccf8c
R10: 00007ffdcd7a83d0 R11: 0000000000000246 R12: 00007f7c2cdccf8c
R13: 00000000001e4385 R14: 00007ffdcd7a83f0 R15: 00007ffdcd7a83d0
NMI backtrace for cpu 0
CPU: 0 PID: 26986 Comm: syz-executor.4 Not tainted 5.15.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb 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_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3911 [inline]
rcu_sched_clock_irq+0xf26/0x1770 kernel/rcu/tree.c:2606
update_process_times+0x196/0x200 kernel/time/timer.c:1788
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:1685 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: b1 7e f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 2e c8 3c f7 48 89 df e8 86 1b 3e f7 e8 21 c9 60 f7 fb bf 01 00 00 00 66 59 31 f7 65 8b 05 b7 95 dc 75 85 c0 74 02 5b c3 e8 44 ad da
RSP: 0018:ffffc900050efbc0 EFLAGS: 00000282
RAX: 759c9b58ca138900 RBX: ffff88801e703780 RCX: ffffffff913d1003
RDX: dffffc0000000000 RSI: ffffffff8a8b0b60 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8186a350 R09: ffffed1003ce06f1
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021
R13: dffffc0000000000 R14: ffff88801e703c18 R15: ffff88801e703780
spin_unlock_irq include/linux/spinlock.h:413 [inline]
get_signal+0x13ee/0x14e0 kernel/signal.c:2892
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f2fdb42eae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe1a71ffd8 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 00000000001e3f8e RCX: 00007f2fdb42eae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2fdb54df8c
RBP: 0000000000000032 R08: 00007f2fdb54df8c R09: 00007f2fdb54df8c
R10: 00007ffe1a720110 R11: 0000000000000246 R12: 00007f2fdb54df8c
R13: 00000000001e3fc0 R14: 00007ffe1a720130 R15: 00007ffe1a720110