rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (9924 ticks this GP) idle=6fe/1/0x4000000000000000 softirq=12231/12232 fqs=5074 (t=10501 jiffies g=10081 q=635) NMI backtrace for cpu 1 CPU: 1 PID: 9987 Comm: syz-executor.1 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c: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:1376 __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:queue_work include/linux/workqueue.h:507 [inline] RIP: 0010:ieee80211_queue_work net/mac80211/util.c:931 [inline] RIP: 0010:ieee80211_queue_work+0x11c/0x160 net/mac80211/util.c:924 Code: e8 89 e5 1c f9 48 8d bb d8 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 3f 48 8b b3 d8 02 00 00 <4c> 89 e2 bf 08 00 00 00 e8 57 33 f4 f8 5b 5d 41 5c 41 5d 41 5e e9 RSP: 0018:ffffc90000d908e0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff8880171f0c80 RCX: ffffffff885397d5 RDX: 1ffff11002e3e1eb RSI: ffff888026413800 RDI: ffff8880171f0f58 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8ebb0847 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888027bd95f0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ieee80211_rx_h_mgmt net/mac80211/rx.c:3638 [inline] ieee80211_rx_handlers+0x3b86/0xae50 net/mac80211/rx.c:3804 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3834 [inline] ieee80211_prepare_and_rx_handle+0x2482/0x6360 net/mac80211/rx.c:4518 __ieee80211_rx_handle_packet net/mac80211/rx.c:4579 [inline] ieee80211_rx_list+0xdf3/0x23d0 net/mac80211/rx.c:4759 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4780 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x22f/0x2d0 kernel/softirq.c:560 __do_softirq+0x2a0/0x9f6 kernel/softirq.c:298 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:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x132/0x200 kernel/softirq.c:435 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:__sanitizer_cov_trace_pc+0x30/0x60 kernel/kcov.c:197 Code: f0 01 00 65 8b 05 30 72 91 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 cc 14 00 00 85 c0 74 2b 8b 82 a8 14 00 00 <83> f8 02 75 20 48 8b 8a b0 14 00 00 8b 92 ac 14 00 00 48 8b 01 48 RSP: 0018:ffffc90000fbf6f0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000c34240 RCX: ffffffff81a1b6e0 RDX: ffff8880767c1ac0 RSI: ffffffff81a1b72e RDI: 0000000000000006 RBP: 1ffff920001f7ee0 R08: 0000000000000000 R09: ffff8880767c1ac7 R10: 0000000000030d09 R11: 0000000000000000 R12: ffffea0000000000 R13: 0000000000506000 R14: 000000000023ffff R15: 0000000000000000 vm_normal_page+0x13e/0x2a0 mm/memory.c:646 zap_pte_range mm/memory.c:1226 [inline] zap_pmd_range mm/memory.c:1357 [inline] zap_pud_range mm/memory.c:1386 [inline] zap_p4d_range mm/memory.c:1407 [inline] unmap_page_range+0xa77/0x2640 mm/memory.c:1428 unmap_single_vma+0x198/0x300 mm/memory.c:1473 unmap_vmas+0x168/0x2e0 mm/memory.c:1505 exit_mmap+0x2b1/0x530 mm/mmap.c:3220 __mmput+0x122/0x470 kernel/fork.c:1081 mmput+0x53/0x60 kernel/fork.c:1102 exit_mm kernel/exit.c:500 [inline] do_exit+0xaa9/0x29f0 kernel/exit.c:810 do_group_exit+0x125/0x310 kernel/exit.c:920 get_signal+0x42a/0x1fb0 kernel/signal.c:2792 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+0x124/0x200 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: 0033:0x45e159 Code: Unable to access opcode bytes at RIP 0x45e12f. RSP: 002b:00007f2ccaedacf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000119c180 RCX: 000000000045e159 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000119c180 RBP: 000000000119c178 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184 R13: 00007ffd6c8b148f R14: 00007f2ccaedb9c0 R15: 000000000119c184