hrtimer: interrupt took 27090 ns rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (8524 ticks this GP) idle=83a/1/0x4000000000000000 softirq=11824/11825 fqs=5223 (t=10502 jiffies g=10001 q=2074) NMI backtrace for cpu 1 CPU: 1 PID: 9955 Comm: syz-executor.2 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:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 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:331 print_cpu_stall kernel/rcu/tree_stall.h:563 [inline] check_cpu_stall kernel/rcu/tree_stall.h:637 [inline] rcu_pending kernel/rcu/tree.c:3694 [inline] rcu_sched_clock_irq.cold+0x472/0xee8 kernel/rcu/tree.c:2567 update_process_times+0x77/0xd0 kernel/time/timer.c:1709 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328 __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:1080 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1097 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:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:write_comp_data+0x25/0x80 kernel/kcov.c:218 Code: 00 00 00 00 00 49 89 f2 65 8b 05 06 f4 91 7e 65 48 8b 34 25 00 f0 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 5c 14 00 00 <85> c0 74 4f 8b 86 38 14 00 00 83 f8 03 75 44 48 8b 86 40 14 00 00 RSP: 0018:ffffc90000d908d8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff888021738450 RCX: ffffffff884ce10e RDX: 000000000000004c RSI: ffff8880729c9a40 RDI: 0000000000000005 RBP: 000000000000004c R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000029 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff888021441dc0 R14: ffff888021441dc0 R15: 000000000000004c ieee80211_get_mmie_keyidx.isra.0+0x1e/0x4a0 net/mac80211/rx.c:970 ieee80211_rx_h_decrypt net/mac80211/rx.c:1960 [inline] ieee80211_rx_handlers+0xb48/0xae50 net/mac80211/rx.c:3782 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:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:debug_lockdep_rcu_enabled+0x6/0x30 kernel/rcu/update.c:278 Code: 00 00 00 00 0f 1f 44 00 00 65 81 05 30 b6 1c 77 00 00 00 f0 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 8b 05 5a 43 07 04 <85> c0 74 21 8b 05 2c 74 07 04 85 c0 74 17 65 48 8b 04 25 00 f0 01 RSP: 0018:ffffc90016827a68 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000001 RCX: 1ffff92002d04000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880729c9a58 RBP: ffffc90016827b38 R08: 0000000000000001 R09: ffffffff8ebb067f R10: fffffbfff1d760cf R11: 0000000000000001 R12: ffff8880b9f34980 R13: ffff8880729c9a40 R14: ffff8880b9f34980 R15: 0000000000034980 schedule_debug kernel/sched/core.c:4298 [inline] __schedule+0x190/0x2130 kernel/sched/core.c:4423 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:4789 irqentry_exit_cond_resched kernel/entry/common.c:357 [inline] irqentry_exit_cond_resched kernel/entry/common.c:349 [inline] irqentry_exit+0x7a/0xa0 kernel/entry/common.c:387 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: ff d3 48 c7 44 24 50 00 00 00 00 eb e3 66 0f 1f 44 00 00 31 ed 65 48 8b 04 25 0c a0 00 00 48 8d a0 58 ff ff ff e8 e9 c1 41 00 <55> 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 53 a5 e6 07 RSP: 0018:ffffc90016827c10 EFLAGS: 00000246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffff888013ed5838 R08: 0000000000000000 R09: ffff888013ed583b R10: ffffed10027dab07 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801c92d840 R14: ffff88801c92d848 R15: 0000000000000000 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:183 spin_unlock include/linux/spinlock.h:394 [inline] browse_rb mm/mmap.c:361 [inline] validate_mm+0x355/0x800 mm/mmap.c:421 mmap_region+0xd83/0x1710 mm/mmap.c:1860 do_mmap+0xcf9/0x11d0 mm/mmap.c:1583 vm_mmap_pgoff+0x195/0x200 mm/util.c:507 ksys_mmap_pgoff+0x444/0x580 mm/mmap.c:1634 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e159 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f668b5d4c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045e159 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffc000 RBP: 000000000119bfd8 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffd4a537fff R14: 00007f668b5d59c0 R15: 000000000119bf8c