rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10361 ticks this GP) idle=022/1/0x4000000000000000 softirq=14821/14823 fqs=5072 (t=10500 jiffies g=18325 q=779) NMI backtrace for cpu 0 CPU: 0 PID: 11584 Comm: syz-executor.1 Not tainted 5.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 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+0x1e3/0x21e kernel/rcu/tree_stall.h:337 print_cpu_stall kernel/rcu/tree_stall.h:569 [inline] check_cpu_stall kernel/rcu/tree_stall.h:643 [inline] rcu_pending kernel/rcu/tree.c:3751 [inline] rcu_sched_clock_irq.cold+0x472/0xec3 kernel/rcu/tree.c:2580 update_process_times+0x16d/0x200 kernel/time/timer.c:1782 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1369 __run_hrtimer kernel/time/hrtimer.c:1519 [inline] __hrtimer_run_queues+0x1ce/0xea0 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1102 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:check_memory_region_inline mm/kasan/generic.c:166 [inline] RIP: 0010:check_memory_region+0x12c/0x180 mm/kasan/generic.c:185 Code: 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 01 00 00 00 5d 41 5c c3 44 89 c2 e8 03 f0 ff ff 5b 83 f0 01 5d RSP: 0018:ffffc900000077f8 EFLAGS: 00000246 RAX: fffffbfff19dea92 RBX: 1ffff92000000f04 RCX: ffffffff81588dc8 RDX: fffffbfff19dea92 RSI: 0000000000000008 RDI: ffffffff8cef5488 RBP: fffffbfff19dea91 R08: 0000000000000000 R09: ffffffff8cef548f R10: fffffbfff19dea91 R11: 0000000000000088 R12: 0000000000000000 R13: ffff8880632114b8 R14: 0000000000000000 R15: 0000000000000000 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:373 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0xb8/0x740 kernel/locking/lockdep.c:5408 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] ieee80211_rx_handlers+0xd7/0xae50 net/mac80211/rx.c:3758 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3823 [inline] ieee80211_prepare_and_rx_handle+0x2414/0x61c0 net/mac80211/rx.c:4503 __ieee80211_rx_handle_packet net/mac80211/rx.c:4564 [inline] ieee80211_rx_list+0x1077/0x2430 net/mac80211/rx.c:4744 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4767 ieee80211_rx include/net/mac80211.h:4507 [inline] ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x1d7/0x2d0 kernel/softirq.c:555 __do_softirq+0x2a5/0x9f7 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:zap_pte_range mm/memory.c:1227 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1368 [inline] RIP: 0010:zap_pud_range mm/memory.c:1397 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1418 [inline] RIP: 0010:unmap_page_range+0x9db/0x2640 mm/memory.c:1439 Code: 00 00 4c 39 fb 0f 84 39 0e 00 00 49 89 c7 49 8d 87 00 f0 ff ff 48 89 04 24 e8 71 dc cd ff 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 d1 17 00 00 4d 8b 65 00 31 ff 4c 89 e3 48 83 e3 9f 48 89 de RSP: 0018:ffffc900022c7798 EFLAGS: 00000246 RAX: 1ffff110038bfe7b RBX: 00007ff8c8d91000 RCX: 0000000000000000 RDX: ffff8880225bb780 RSI: ffffffff81a4992f RDI: 0000000000000003 RBP: ffffea00014f8600 R08: 00007ff8c8d91000 R09: 0000000000000000 R10: ffffffff81a4990c R11: 0000000000000000 R12: ffffea00014f8630 R13: ffff88801c5ff3d8 R14: dffffc0000000000 R15: 00007ff8c8c7c000 unmap_single_vma+0x198/0x300 mm/memory.c:1484 unmap_vmas+0x168/0x2e0 mm/memory.c:1516 exit_mmap+0x2b1/0x5a0 mm/mmap.c:3220 __mmput+0x122/0x470 kernel/fork.c:1083 mmput+0x53/0x60 kernel/fork.c:1104 exit_mm kernel/exit.c:501 [inline] do_exit+0xb6a/0x2ae0 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x3ec/0x2010 kernel/signal.c:2770 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: Unable to access opcode bytes at RIP 0x45e1ef. RSP: 002b:00007ff8c772bcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000119c180 RCX: 000000000045e219 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000119c184 RBP: 000000000119c178 R08: 0000000000000009 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000119c184 R13: 00007fffe7efe88f R14: 00007ff8c772c9c0 R15: 000000000119c184