rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=391/1/0x4000000000000000 softirq=115928/115931 fqs=13
(t=10500 jiffies g=184721 q=840)
NMI backtrace for cpu 1
CPU: 1 PID: 8908 Comm: syz-executor.0 Not tainted 5.17.0-rc1-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:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 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:604 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq.cold+0x5c/0x759 kernel/rcu/tree.c:2617
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:preempt_count_add+0x0/0x140 kernel/sched/core.c:5442
Code: ff ff 48 89 ef e8 d0 90 06 00 48 89 ef e8 58 5d 07 00 48 89 ee 48 8b 3d 0e 1e 44 0c 5d e9 b8 dd 6e 00 0f 1f 84 00 00 00 00 00 <48> c7 c0 00 c9 51 90 55 48 ba 00 00 00 00 00 fc ff df 48 89 c1 53
RSP: 0018:ffffc90000dc0ce8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888024cbcc00 RCX: 0000000000000100
RDX: ffff88807c083a00 RSI: ffffffff83daecbd RDI: 0000000000000001
RBP: 0000000000000014 R08: 0000000000000000 R09: ffffffff8ffcea27
R10: ffffffff8166717d R11: 0000000000000001 R12: ffff888024cbcc10
R13: 1ffff920001b81a8 R14: ffffffff874d9e20 R15: 0000000000000000
prandom_u32+0x17/0x470 lib/random32.c:387
mrp_join_timer_arm+0x21/0x80 net/802/mrp.c:595
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x67c/0xa30 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:__kasan_check_read+0x4/0x10 mm/kasan/shadow.c:31
Code: 49 07 48 85 db 0f 85 cb 43 4b 07 48 83 c4 60 5b 5d 41 5c 41 5d c3 c3 e9 cb 44 4b 07 cc cc cc cc cc cc cc cc cc cc 48 8b 0c 24 <89> f6 31 d2 e9 f3 f9 ff ff 0f 1f 00 48 8b 0c 24 89 f6 ba 01 00 00
RSP: 0018:ffffc9000ade76b8 EFLAGS: 00000286
RAX: ffffea00010c9bc0 RBX: 0000000000000000 RCX: ffffffff81c5a8fc
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea00010c9bc0
RBP: ffffc9000ade7708 R08: 0000000000000000 R09: ffffffff8ffce947
R10: fffffbfff1ff9d28 R11: 0000000000000000 R12: ffffea00010c9bc0
R13: dffffc0000000000 R14: fffff9400021937f R15: 00007f5237968000
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
folio_test_slab include/linux/page-flags.h:428 [inline]
__folio_memcg include/linux/memcontrol.h:395 [inline]
folio_memcg include/linux/memcontrol.h:447 [inline]
folio_memcg_lock+0xec/0x3e0 mm/memcontrol.c:2022
page_remove_rmap+0x25/0x1480 mm/rmap.c:1377
zap_pte_range mm/memory.c:1380 [inline]
zap_pmd_range mm/memory.c:1490 [inline]
zap_pud_range mm/memory.c:1519 [inline]
zap_p4d_range mm/memory.c:1540 [inline]
unmap_page_range+0xf7f/0x2a30 mm/memory.c:1561
unmap_single_vma+0x198/0x310 mm/memory.c:1606
unmap_vmas+0x16b/0x2f0 mm/memory.c:1638
exit_mmap+0x201/0x670 mm/mmap.c:3178
__mmput+0x122/0x4b0 kernel/fork.c:1114
mmput+0x56/0x60 kernel/fork.c:1135
exit_mm kernel/exit.c:507 [inline]
do_exit+0xa3c/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
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: 0033:0x7f5238655059
Code: Unable to access opcode bytes at RIP 0x7f523865502f.
RSP: 002b:00007f5236fca168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: 0000000000000004 RBX: 00007f5238767f60 RCX: 00007f5238655059
RDX: 0000000000000180 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f52386af08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5238c9bb1f R14: 00007f5236fca300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: ff 48 89 decl -0x77(%rax)
3: ef out %eax,(%dx)
4: e8 d0 90 06 00 callq 0x690d9
9: 48 89 ef mov %rbp,%rdi
c: e8 58 5d 07 00 callq 0x75d69
11: 48 89 ee mov %rbp,%rsi
14: 48 8b 3d 0e 1e 44 0c mov 0xc441e0e(%rip),%rdi # 0xc441e29
1b: 5d pop %rbp
1c: e9 b8 dd 6e 00 jmpq 0x6eddd9
21: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
28: 00
* 29: 48 c7 c0 00 c9 51 90 mov $0xffffffff9051c900,%rax <-- trapping instruction
30: 55 push %rbp
31: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
38: fc ff df
3b: 48 89 c1 mov %rax,%rcx
3e: 53 push %rbx