rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=b8b/1/0x4000000000000000 softirq=143750/143750 fqs=0
(t=10501 jiffies g=259085 q=679)
rcu: rcu_preempt kthread starved for 10502 jiffies! g259085 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:28912 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 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+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9957 Comm: kworker/u4:3 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x80 kernel/kcov.c:269
Code: 39 fe 72 1f 48 83 c2 01 4c 89 44 38 e8 48 c7 44 38 e0 06 00 00 00 48 89 4c 38 f0 4e 89 54 c8 20 48 89 10 c3 66 0f 1f 44 00 00 <53> 41 89 fb 41 89 f1 bf 03 00 00 00 65 48 8b 0c 25 40 70 02 00 48
RSP: 0018:ffffc90003c37cc0 EFLAGS: 00000046
RAX: 0000000000000005 RBX: ffff88807a945800 RCX: 1ffffffff1ade1d6
RDX: 0000000000000000 RSI: 000000000000002e RDI: 000000000000003f
RBP: ffff8880fa945800 R08: ffff8880fa945800 R09: 000000000000002e
R10: ffffffff81350dae R11: 000000000000003f R12: 000000007a945800
R13: 000000000000002e R14: 0000607f46000ef0 R15: ffffea0000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f423000 CR3: 00000000295b9000 CR4: 00000000003506e0
Call Trace:
phys_addr_valid arch/x86/mm/physaddr.h:7 [inline]
__phys_addr+0x98/0x140 arch/x86/mm/physaddr.c:28
cache_free_alien mm/slab.c:796 [inline]
___cache_free+0x2e3/0x610 mm/slab.c:3473
qlink_free mm/kasan/quarantine.c:146 [inline]
qlist_free_all+0x4e/0x110 mm/kasan/quarantine.c:165
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
__kasan_slab_alloc+0x92/0xa0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc mm/slab.c:3323 [inline]
kmem_cache_alloc+0x25f/0x530 mm/slab.c:3507
mm_alloc+0x19/0xc0 kernel/fork.c:1097
bprm_mm_init fs/exec.c:368 [inline]
alloc_bprm+0x1c6/0x8f0 fs/exec.c:1523
kernel_execve+0x55/0x460 fs/exec.c:1943
call_usermodehelper_exec_async+0x2e3/0x580 kernel/umh.c:112
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
NMI backtrace for cpu 0
CPU: 0 PID: 9953 Comm: syz-executor.0 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:3878 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
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+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 4a c6 20 f8 48 89 ef e8 92 3c 21 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 93 04 14 f8 65 8b 05 bc 26 c7 76 85 c0 74 0a 5b 5d c3 e8 d0 ef
RSP: 0018:ffffc90000007c08 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1fb2c3e
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff8880b9c28280 R08: 0000000000000001 R09: ffffffff8fd40ae7
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000100034ed0
R13: ffff8880b9c28280 R14: 0000000000000000 R15: 00000000ffffffff
__mod_timer+0x837/0xe30 kernel/time/timer.c:1065
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 4a c6 20 f8 48 89 ef e8 92 3c 21 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 93 04 14 f8 65 8b 05 bc 26 c7 76 85 c0 74 0a 5b 5d c3 e8 d0 ef
RSP: 0018:ffffc90003ce7b78 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1addd69
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8880b9c2a400 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817d3958 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000246 R14: ffff8880b9c2a480 R15: dffffc0000000000
unlock_hrtimer_base kernel/time/hrtimer.c:1017 [inline]
hrtimer_try_to_cancel kernel/time/hrtimer.c:1336 [inline]
hrtimer_try_to_cancel+0x14e/0x1e0 kernel/time/hrtimer.c:1316
hrtimer_cancel+0x13/0x40 kernel/time/hrtimer.c:1443
futex_wait+0x597/0x670 kernel/futex/waitwake.c:688
do_futex+0x205/0x390 kernel/futex/syscalls.c:122
__do_sys_futex kernel/futex/syscalls.c:199 [inline]
__se_sys_futex kernel/futex/syscalls.c:180 [inline]
__x64_sys_futex+0x1b0/0x4a0 kernel/futex/syscalls.c:180
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: 0033:0x7f46e0f9fae9
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:00007ffcb448ae18 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000032 RCX: 00007f46e0f9fae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f46e10b2f6c
RBP: 00007f46e10b2f6c R08: 00007ffcb458b080 R09: 0000000000000000
R10: 00007ffcb448aef0 R11: 0000000000000246 R12: 00000000002414b1
R13: 00000000000003e8 R14: 00007f46e10b2f60 R15: 0000000000241492
sched: RT throttling activated
----------------
Code disassembly (best guess):
0: 39 fe cmp %edi,%esi
2: 72 1f jb 0x23
4: 48 83 c2 01 add $0x1,%rdx
8: 4c 89 44 38 e8 mov %r8,-0x18(%rax,%rdi,1)
d: 48 c7 44 38 e0 06 00 movq $0x6,-0x20(%rax,%rdi,1)
14: 00 00
16: 48 89 4c 38 f0 mov %rcx,-0x10(%rax,%rdi,1)
1b: 4e 89 54 c8 20 mov %r10,0x20(%rax,%r9,8)
20: 48 89 10 mov %rdx,(%rax)
23: c3 retq
24: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
* 2a: 53 push %rbx <-- trapping instruction
2b: 41 89 fb mov %edi,%r11d
2e: 41 89 f1 mov %esi,%r9d
31: bf 03 00 00 00 mov $0x3,%edi
36: 65 48 8b 0c 25 40 70 mov %gs:0x27040,%rcx
3d: 02 00
3f: 48 rex.W