rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=053/1/0x4000000000000000 softirq=50339/50340 fqs=6
(t=10500 jiffies g=88917 q=85)
rcu: rcu_preempt kthread starved for 10418 jiffies! g88917 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:28952 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xb44/0x5960 kernel/sched/core.c:6287
schedule+0xd3/0x270 kernel/sched/core.c:6366
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x800 kernel/rcu/tree.c:1957
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2130
kthread+0x3e5/0x4d0 kernel/kthread.c:319
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: 22294 Comm: syz-executor.0 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:perf_misc_flags+0xaa/0x1b0 arch/x86/events/core.c:2967
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f3 00 00 00 48 8b 9d 88 00 00 00 31 ff 83 e3 03 48 89 de e8 d6 ed 74 00 <48> 83 fb 01 bb 01 00 00 00 83 db ff e8 e5 e7 74 00 48 8d bd 90 00
RSP: 0018:ffffc90000fd8a10 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff888091432300 RDI: 0000000000000003
RBP: ffffc90004f171a8 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81013baa R11: 0000000000000000 R12: ffffffff90260a40
R13: ffff88807b508e30 R14: ffffc90000fd8b24 R15: ffffc90000fd8b20
FS: 00007f90b2435700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001f3a1000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
perf_prepare_sample+0x173/0x1e70 kernel/events/core.c:7307
__perf_event_output kernel/events/core.c:7487 [inline]
perf_event_output_forward+0xda/0x280 kernel/events/core.c:7507
__perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9177
perf_swevent_hrtimer+0x37c/0x3f0 kernel/events/core.c:10567
__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:638
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:716 [inline]
RIP: 0010:count_memcg_event_mm.part.0+0x117/0x2d0 include/linux/memcontrol.h:1064
Code: 02 00 00 31 ff 48 89 ee e8 66 1e cb ff 48 85 ed 0f 85 b0 01 00 00 e8 78 18 cb ff 31 ff 48 89 de e8 4e 1e cb ff 48 85 db 75 43 64 18 cb ff e8 8f c9 b6 ff 31 ff 89 c3 89 c6 e8 04 20 cb ff 84
RSP: 0018:ffffc90004f17258 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000200 RCX: ffffc90002ff9000
RDX: 0000000000040000 RSI: ffffffff81ab0b7f RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fd05a17
R10: ffffffff81ab0b32 R11: 0000000000000000 R12: ffff88814018c000
R13: 0000000000000000 R14: ffff888091432300 R15: ffff888091432300
count_memcg_event_mm include/linux/memcontrol.h:603 [inline]
handle_mm_fault+0xcf/0x790 mm/memory.c:4772
faultin_page mm/gup.c:937 [inline]
__get_user_pages+0x503/0xf80 mm/gup.c:1158
__get_user_pages_locked mm/gup.c:1343 [inline]
get_user_pages_unlocked+0x1b3/0x760 mm/gup.c:2067
hva_to_pfn_slow arch/x86/kvm/../../../virt/kvm/kvm_main.c:2269 [inline]
hva_to_pfn+0x1c1/0xdd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2401
__gfn_to_pfn_memslot+0x229/0x420 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2460
kvm_faultin_pfn+0x3d8/0xbc0 arch/x86/kvm/mmu/mmu.c:3957
direct_page_fault+0xd22/0x2320 arch/x86/kvm/mmu/mmu.c:3992
kvm_mmu_do_page_fault arch/x86/kvm/mmu.h:127 [inline]
kvm_mmu_page_fault+0x17e/0x17f0 arch/x86/kvm/mmu/mmu.c:5287
handle_ept_violation+0x29c/0x6e0 arch/x86/kvm/vmx/vmx.c:5325
__vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6038 [inline]
vmx_handle_exit+0x4be/0x1950 arch/x86/kvm/vmx/vmx.c:6055
vcpu_enter_guest+0x2a90/0x4410 arch/x86/kvm/x86.c:9752
vcpu_run arch/x86/kvm/x86.c:9819 [inline]
kvm_arch_vcpu_ioctl_run+0x47c/0x1b10 arch/x86/kvm/x86.c:10051
kvm_vcpu_ioctl+0x570/0xf30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3779
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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: 0033:0x7f90b4ebfa39
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90b2435188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f90b4fc2f60 RCX: 00007f90b4ebfa39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f90b4f19e8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7037b08f R14: 00007f90b2435300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 22290 Comm: syz-executor.4 Not tainted 5.15.0-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 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:3880 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2599
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
__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:638
RIP: 0010:count_memcg_event_mm.part.0+0x81/0x2d0 include/linux/memcontrol.h:1061
Code: ff 48 8d bb d0 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 48 02 00 00 4c 8b a3 d0 05 00 00 8a 3c b6 ff 31 ff 89 c3 89 c6 e8 9f 21 cb ff 85 db 0f 84 c9 00
RSP: 0018:ffffc90004ef7190 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff8880221bc8c0 RCX: ffffc90011e77000
RDX: 1ffff110044379d2 RSI: ffffffff81ab0a78 RDI: ffff8880221bce90
RBP: 0000000000000014 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81ab0a69 R11: 0000000000000000 R12: ffff88802036a140
R13: 0000000000000000 R14: ffff888076fe2300 R15: ffff888076fe2300
count_memcg_event_mm include/linux/memcontrol.h:603 [inline]
handle_mm_fault+0xcf/0x790 mm/memory.c:4772
faultin_page mm/gup.c:937 [inline]
__get_user_pages+0x503/0xf80 mm/gup.c:1158
__get_user_pages_locked mm/gup.c:1343 [inline]
__gup_longterm_locked+0xb45/0xfb0 mm/gup.c:1793
get_user_pages+0x82/0xc0 mm/gup.c:1971
check_user_page_hwpoison arch/x86/kvm/../../../virt/kvm/kvm_main.c:2215 [inline]
hva_to_pfn+0x9a0/0xdd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2407
__gfn_to_pfn_memslot+0x229/0x420 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2460
kvm_faultin_pfn+0x3d8/0xbc0 arch/x86/kvm/mmu/mmu.c:3957
direct_page_fault+0xd22/0x2320 arch/x86/kvm/mmu/mmu.c:3992
kvm_mmu_do_page_fault arch/x86/kvm/mmu.h:127 [inline]
kvm_mmu_page_fault+0x17e/0x17f0 arch/x86/kvm/mmu/mmu.c:5287
handle_ept_violation+0x29c/0x6e0 arch/x86/kvm/vmx/vmx.c:5325
__vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6038 [inline]
vmx_handle_exit+0x4be/0x1950 arch/x86/kvm/vmx/vmx.c:6055
vcpu_enter_guest+0x2a90/0x4410 arch/x86/kvm/x86.c:9752
vcpu_run arch/x86/kvm/x86.c:9819 [inline]
kvm_arch_vcpu_ioctl_run+0x47c/0x1b10 arch/x86/kvm/x86.c:10051
kvm_vcpu_ioctl+0x570/0xf30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3779
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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: 0033:0x7f3822262a39
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f381f7d8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3822365f60 RCX: 00007f3822262a39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f38222bce8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb164cfaf R14: 00007f381f7d8300 R15: 0000000000022000
----------------
Code disassembly (best guess), 4 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: fa cli
4: 48 c1 ea 03 shr $0x3,%rdx
8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
c: 0f 85 f3 00 00 00 jne 0x105
12: 48 8b 9d 88 00 00 00 mov 0x88(%rbp),%rbx
19: 31 ff xor %edi,%edi
1b: 83 e3 03 and $0x3,%ebx
1e: 48 89 de mov %rbx,%rsi
21: e8 d6 ed 74 00 callq 0x74edfc
* 26: 48 83 fb 01 cmp $0x1,%rbx <-- trapping instruction
2a: bb 01 00 00 00 mov $0x1,%ebx
2f: 83 db ff sbb $0xffffffff,%ebx
32: e8 e5 e7 74 00 callq 0x74e81c
37: 48 rex.W
38: 8d .byte 0x8d
39: bd .byte 0xbd
3a: 90 nop