rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=b6b/1/0x4000000000000000 softirq=255722/255723 fqs=16
(t=10500 jiffies g=456925 q=101)
NMI backtrace for cpu 1
CPU: 1 PID: 29574 Comm: syz-executor.5 Not tainted 5.16.0-rc4-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: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: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_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 3a b1 15 f8 48 89 ef e8 82 27 16 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 c3 ef 08 f8 65 8b 05 9c 62 bb 76 85 c0 74 0a 5b 5d c3 e8 d0 e1
RSP: 0018:ffffc90000dc0cc0 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1ff8f56
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff88803054e508 R08: 0000000000000001 R09: ffffffff8ff73adf
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88803054e508 R14: ffffffff8747f350 R15: 0000000000000000
spin_unlock_irqrestore include/linux/spinlock.h:404 [inline]
skb_dequeue+0x125/0x180 net/core/skbuff.c:3216
mrp_queue_xmit net/802/mrp.c:363 [inline]
mrp_join_timer+0x97/0xc0 net/802/mrp.c:608
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: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:__sanitizer_cov_trace_cmp4+0xc/0x70 kernel/kcov.c:260
Code: e8 48 c7 44 38 e0 07 00 00 00 48 89 4c 38 f0 4e 89 54 c8 20 48 89 10 c3 66 0f 1f 44 00 00 41 89 f8 bf 03 00 00 00 4c 8b 14 24 <89> f1 65 48 8b 34 25 40 70 02 00 e8 34 f8 ff ff 84 c0 74 4b 48 8b
RSP: 0018:ffffc9000b8b7768 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000b8b7a78 RCX: 0000000000000000
RDX: ffff88802f570000 RSI: 00000000000001fe RDI: 0000000000000003
RBP: 00000000000001fe R08: 0000000000000108 R09: ffffea00010a97f3
R10: ffffffff81b0172c R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000108 R14: ffffea00010a97c0 R15: ffffc9000b8b7aa0
__tlb_remove_page_size+0x11c/0x420 mm/mmu_gather.c:87
__tlb_remove_page include/asm-generic/tlb.h:440 [inline]
zap_pte_range mm/memory.c:1360 [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+0xf85/0x29f0 mm/memory.c:1538
unmap_single_vma+0x198/0x310 mm/memory.c:1583
unmap_vmas+0x16b/0x2f0 mm/memory.c:1615
exit_mmap+0x1d0/0x630 mm/mmap.c:3170
__mmput+0x122/0x4b0 kernel/fork.c:1113
mmput+0x56/0x60 kernel/fork.c:1134
exit_mm kernel/exit.c:507 [inline]
do_exit+0xb27/0x2b40 kernel/exit.c:819
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
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: 0033:0x7f10d4b32af9
Code: Unable to access opcode bytes at RIP 0x7f10d4b32acf.
RSP: 002b:00007f10d3aa8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000004 RBX: 00007f10d4c45f60 RCX: 00007f10d4b32af9
RDX: 0000000000000004 RSI: 6000000000000003 RDI: 0000000000000002
RBP: 00007f10d4b8cff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f10d5179b2f R14: 00007f10d3aa8300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 74 24 je 0x26
2: 10 e8 adc %ch,%al
4: 3a b1 15 f8 48 89 cmp -0x76b707eb(%rcx),%dh
a: ef out %eax,(%dx)
b: e8 82 27 16 f8 callq 0xf8162792
10: 81 e3 00 02 00 00 and $0x200,%ebx
16: 75 25 jne 0x3d
18: 9c pushfq
19: 58 pop %rax
1a: f6 c4 02 test $0x2,%ah
1d: 75 2d jne 0x4c
1f: 48 85 db test %rbx,%rbx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 c3 ef 08 f8 callq 0xf808eff2 <-- trapping instruction
2f: 65 8b 05 9c 62 bb 76 mov %gs:0x76bb629c(%rip),%eax # 0x76bb62d2
36: 85 c0 test %eax,%eax
38: 74 0a je 0x44
3a: 5b pop %rbx
3b: 5d pop %rbp
3c: c3 retq
3d: e8 .byte 0xe8
3e: d0 e1 shl %cl