rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10499 ticks this GP) idle=f15/1/0x4000000000000000 softirq=155581/155581 fqs=8
(t=10500 jiffies g=308793 q=302)
rcu: rcu_preempt kthread starved for 10482 jiffies! g308793 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:28952 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4910 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
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+0x405/0x4f0 kernel/kthread.c:327
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19982 Comm: syz-executor.2 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_check_range+0x12b/0x180 mm/kasan/generic.c:190
Code: 3a 00 74 ef 49 8d 04 2c 48 85 d2 75 0b 48 89 da 48 29 c2 e9 55 ff ff ff 49 39 d2 75 17 49 0f be 02 41 83 e1 07 49 39 c1 7d 0a <5b> b8 01 00 00 00 5d 41 5c c3 44 89 c2 e8 73 f0 ff ff 5b 83 f0 01
RSP: 0018:ffffc90000007e08 EFLAGS: 00000046
RAX: fffffbfff1add9e3 RBX: fffffbfff1add9e3 RCX: ffffffff815bc338
RDX: fffffbfff1add9e3 RSI: 0000000000000008 RDI: ffffffff8d6ecf10
RBP: fffffbfff1add9e2 R08: 0000000000000000 R09: ffffffff8d6ecf17
R10: fffffbfff1add9e2 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880b9c22418 R15: 0000000000000000
FS: 00007fd0c0747700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001dd59000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
cpumask_test_cpu include/linux/cpumask.h:344 [inline]
cpu_online include/linux/cpumask.h:895 [inline]
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0xb8/0x510 kernel/locking/lockdep.c:5596
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
hrtimer_interrupt+0x103/0x790 kernel/time/hrtimer.c:1792
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:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 kernel/kcov.c:197
Code: fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 65 8b 05 09 6a 8b 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 f0 01 00 a9
RSP: 0018:ffffc90005737328 EFLAGS: 00000202
RAX: 0000000080000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880326de200 RDI: 0000000000000003
RBP: ffffc90005737488 R08: 0000000000000001 R09: ffffffff8fd17b17
R10: ffffffff81a9c20f R11: 0000000000000000 R12: 0000000000000007
R13: 0000000000000000 R14: ffff88801aa56000 R15: 0000000000000001
internal_get_user_pages_fast+0x969/0x2560 mm/gup.c:2728
get_user_pages_fast_only+0x2b/0x40 mm/gup.c:2781
get_user_page_fast_only include/linux/mm.h:2042 [inline]
hva_to_pfn_fast arch/x86/kvm/../../../virt/kvm/kvm_main.c:2237 [inline]
hva_to_pfn+0xf1/0xdd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2395
__gfn_to_pfn_memslot+0x229/0x420 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2460
kvm_faultin_pfn+0x171/0xbc0 arch/x86/kvm/mmu/mmu.c:3942
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:9633
vcpu_run arch/x86/kvm/x86.c:9700 [inline]
kvm_arch_vcpu_ioctl_run+0x4fc/0x21a0 arch/x86/kvm/x86.c:9895
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: 0033:0x7fd0c31d1ae9
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:00007fd0c0747188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd0c32e4f60 RCX: 00007fd0c31d1ae9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007fd0c322bf25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe78764e3f R14: 00007fd0c0747300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 19975 Comm: syz-executor.5 Not tainted 5.15.0-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:is_tdp_mmu_page arch/x86/kvm/mmu/tdp_mmu.h:96 [inline]
RIP: 0010:is_tdp_mmu arch/x86/kvm/mmu/tdp_mmu.h:112 [inline]
RIP: 0010:direct_page_fault+0x688/0x2320 arch/x86/kvm/mmu/mmu.c:3968
Code: f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 a1 63 5a 00 48 8d 7b 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 06 0f 8e 00 1b 00 00 0f b6 43 20 31 ff 41 89 c7 89 c6 88
RSP: 0018:ffffc90005797780 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff88801c694610 RCX: ffffc9001447f000
RDX: 1ffff110038d28c6 RSI: ffffffff811c224f RDI: ffff88801c694630
RBP: ffff88803b110840 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff811c1d46 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000100000004 R15: ffff88803b110840
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:9633
vcpu_run arch/x86/kvm/x86.c:9700 [inline]
kvm_arch_vcpu_ioctl_run+0x4fc/0x21a0 arch/x86/kvm/x86.c:9895
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: 0033:0x7fd713cdbae9
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:00007fd711251188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd713deef60 RCX: 00007fd713cdbae9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007fd713d35f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcc66cb26f R14: 00007fd711251300 R15: 0000000000022000
sched: RT throttling activated
----------------
Code disassembly (best guess):
0: 3a 00 cmp (%rax),%al
2: 74 ef je 0xfffffff3
4: 49 8d 04 2c lea (%r12,%rbp,1),%rax
8: 48 85 d2 test %rdx,%rdx
b: 75 0b jne 0x18
d: 48 89 da mov %rbx,%rdx
10: 48 29 c2 sub %rax,%rdx
13: e9 55 ff ff ff jmpq 0xffffff6d
18: 49 39 d2 cmp %rdx,%r10
1b: 75 17 jne 0x34
1d: 49 0f be 02 movsbq (%r10),%rax
21: 41 83 e1 07 and $0x7,%r9d
25: 49 39 c1 cmp %rax,%r9
28: 7d 0a jge 0x34
* 2a: 5b pop %rbx <-- trapping instruction
2b: b8 01 00 00 00 mov $0x1,%eax
30: 5d pop %rbp
31: 41 5c pop %r12
33: c3 retq
34: 44 89 c2 mov %r8d,%edx
37: e8 73 f0 ff ff callq 0xfffff0af
3c: 5b pop %rbx
3d: 83 f0 01 xor $0x1,%eax