rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (2676 ticks this GP) idle=d36/1/0x4000000000000000 softirq=13933/13933 fqs=4305 (t=10502 jiffies g=11853 q=735) NMI backtrace for cpu 1 CPU: 1 PID: 10079 Comm: syz-executor.2 Not tainted 5.11.0-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: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+0x1f4/0x230 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+0x48e/0xedf 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+0x1c0/0xe40 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:ieee80211_rx_h_data net/mac80211/rx.c:2935 [inline] RIP: 0010:ieee80211_rx_handlers+0x5f5f/0xae60 net/mac80211/rx.c:3780 Code: 1b f9 40 84 ed 0f 84 30 eb ff ff e8 3b af 1b f9 be 04 00 00 00 bf 04 00 00 00 e8 ac b6 1b f9 e9 c9 f4 ff ff 41 bf 03 00 00 00 2c b1 ff ff e8 17 af 1b f9 48 8b 44 24 18 48 c1 e8 03 42 80 3c RSP: 0018:ffffc90000db0908 EFLAGS: 00000246 RAX: ffffc90000db0d40 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff8880743b5340 RSI: ffffffff8856edf5 RDI: 0000000000000000 RBP: ffff888027bf15b0 R08: 0000000000000001 R09: ffffffff8ed3288f R10: fffffbfff1da6511 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000080 R14: ffff88802938c050 R15: 0000000000000003 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3823 [inline] ieee80211_prepare_and_rx_handle+0x245f/0x6210 net/mac80211/rx.c:4505 __ieee80211_rx_handle_packet net/mac80211/rx.c:4566 [inline] ieee80211_rx_list+0x1077/0x2430 net/mac80211/rx.c:4746 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4769 ieee80211_rx include/net/mac80211.h:4508 [inline] ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x1d7/0x2d0 kernel/softirq.c:555 __do_softirq+0x2bc/0xa29 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:lock_is_held_type+0xe8/0x120 kernel/locking/lockdep.c:5486 Code: 03 44 39 f0 41 0f 94 c5 48 c7 c7 a0 a9 4b 89 e8 0e 0d 00 00 b8 ff ff ff ff 65 0f c1 05 b1 5d 08 77 83 f8 01 75 1b ff 34 24 9d <48> 83 c4 08 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb RSP: 0018:ffffc9000236f5b0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8b373c20 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817893a8 R11: 0000000000000001 R12: ffff8880743b5340 R13: 0000000000000000 R14: 00000000ffffffff R15: ffffc90002368000 lock_is_held include/linux/lockdep.h:271 [inline] schedule_debug kernel/sched/core.c:4846 [inline] __schedule+0x151e/0x21a0 kernel/sched/core.c:4972 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5340 irqentry_exit_cond_resched kernel/entry/common.c:393 [inline] irqentry_exit_cond_resched kernel/entry/common.c:385 [inline] irqentry_exit+0x7a/0xa0 kernel/entry/common.c:423 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:native_pmd_val arch/x86/include/asm/pgtable_types.h:394 [inline] RIP: 0010:pmd_pfn arch/x86/include/asm/pgtable.h:221 [inline] RIP: 0010:pte_lockptr include/linux/mm.h:2166 [inline] RIP: 0010:zap_pte_range mm/memory.c:1222 [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+0x720/0x2640 mm/memory.c:1439 Code: 00 48 89 44 24 40 e8 cf c4 cd ff 48 8b 7c 24 40 31 f6 ba 10 00 00 00 e8 6e 8a 10 00 48 8b 44 24 28 48 c1 e8 03 42 80 3c 30 00 <0f> 85 29 1b 00 00 48 8b 44 24 28 31 ff 4c 8b 2c 24 48 8b 28 49 c1 RSP: 0018:ffffc9000236f798 EFLAGS: 00000246 RAX: 1ffff11005a86f7f RBX: 00007fba70000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000236f8a0 RBP: 0000000000000004 R08: 0000000000000001 R09: ffffc9000236f890 R10: fffff5200046df13 R11: 0000000000000000 R12: ffff888027a3c400 R13: 0000000000000000 R14: dffffc0000000000 R15: 00007fba6fec1000 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:1082 mmput+0x53/0x60 kernel/fork.c:1103 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+0x427/0x20f0 kernel/signal.c:2773 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:00007fba6f231cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000119bf88 RCX: 000000000045e219 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000119bf8c RBP: 000000000119bf80 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffc3ad5b81f R14: 00007fba6f2329c0 R15: 000000000119bf8c