rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10499 ticks this GP) idle=c15/1/0x4000000000000000 softirq=188018/188018 fqs=5120
(t=10501 jiffies g=376625 q=696)
NMI backtrace for cpu 0
CPU: 0 PID: 6906 Comm: syz-executor.4 Not tainted 5.15.0-rc3-next-20210927-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:3882 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2601
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:1428
__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_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 5e 60 26 f8 48 89 ef e8 a6 d6 26 f8 e8 61 4b 47 f8 fb bf 01 00 00 00 36 74 1a f8 65 8b 05 7f 4e cd 76 85 c0 74 02 5d c3 0f 1f 44 00
RSP: 0018:ffffc90000007e08 EFLAGS: 00000206
RAX: 0000000000ec747e RBX: ffffffff87387740 RCX: 1ffffffff1fa2936
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff8880b9c28240 R08: 0000000000000001 R09: ffffffff8fd0d957
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000007e98
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880b9c28240
expire_timers kernel/time/timer.c:1465 [inline]
__run_timers.part.0+0x665/0xa20 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:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
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:__rcu_read_unlock+0x111/0x570 kernel/rcu/tree_plugin.h:429
Code: 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 5e 01 00 00 8b 83 3c 04 00 00 3d ff ff ff 3f 0f 87 38 01 00 00 5b 5d <41> 5c 41 5d 41 5e c3 65 8b 1d 81 91 9f 7e f7 c3 00 00 f0 00 75 9d
RSP: 0018:ffffc9000eb27710 EFLAGS: 00000293
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8161e5b4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88803631213c
RBP: ffff88813fffb000 R08: 0000000000000000 R09: ffff8880b9c3aa0b
R10: ffffed1017387541 R11: 0000000000000000 R12: ffff888036311d00
R13: 00000000ffffffff R14: 0000000000000012 R15: 00007fcc9f5d0000
rcu_read_unlock include/linux/rcupdate.h:726 [inline]
__mod_lruvec_page_state+0x266/0x340 mm/memcontrol.c:695
page_remove_file_rmap mm/rmap.c:1289 [inline]
page_remove_rmap+0x71f/0x1480 mm/rmap.c:1351
zap_pte_range mm/memory.c:1357 [inline]
zap_pmd_range mm/memory.c:1467 [inline]
zap_pud_range mm/memory.c:1496 [inline]
zap_p4d_range mm/memory.c:1517 [inline]
unmap_page_range+0xf0e/0x29f0 mm/memory.c:1538
unmap_single_vma+0x198/0x310 mm/memory.c:1583
unmap_vmas+0x16d/0x2f0 mm/memory.c:1615
exit_mmap+0x1d0/0x630 mm/mmap.c:3171
__mmput+0x122/0x4b0 kernel/fork.c:1166
mmput+0x58/0x60 kernel/fork.c:1187
exit_mm kernel/exit.c:501 [inline]
do_exit+0xabc/0x2a30 kernel/exit.c:812
do_group_exit+0x125/0x310 kernel/exit.c:922
get_signal+0x47f/0x2160 kernel/signal.c:2868
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:863
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fcca0c5d709
Code: Unable to access opcode bytes at RIP 0x7fcca0c5d6df.
RSP: 002b:00007fcc9e1d4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fcca0d61f60 RCX: 00007fcca0c5d709
RDX: 0000000000000000 RSI: 000000000000ae60 RDI: 0000000000000005
RBP: 00007fcca0cb7cb4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeff95ec5f R14: 00007fcc9e1d4300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
5: 55 push %rbp
6: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
b: 48 89 fd mov %rdi,%rbp
e: 48 83 c7 18 add $0x18,%rdi
12: e8 5e 60 26 f8 callq 0xf8266075
17: 48 89 ef mov %rbp,%rdi
1a: e8 a6 d6 26 f8 callq 0xf826d6c5
1f: e8 61 4b 47 f8 callq 0xf8474b85
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 36 74 1a f8 callq 0xf81a7465 <-- trapping instruction
2f: 65 8b 05 7f 4e cd 76 mov %gs:0x76cd4e7f(%rip),%eax # 0x76cd4eb5
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5d pop %rbp
3b: c3 retq
3c: 0f .byte 0xf
3d: 1f (bad)
3e: 44 rex.R