Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout rcu: INFO: rcu_sched self-detected stall on CPU rcu: 1-....: (10487 ticks this GP) idle=5a2/1/0x4000000000000004 softirq=172478/172710 fqs=5235 rcu: (t=10501 jiffies g=16077 q=4) NMI backtrace for cpu 1 CPU: 1 PID: 12929 Comm: syz-executor.4 Not tainted 4.19.163-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+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x62d/0xe19 kernel/rcu/tree.c:2682 update_process_times+0x2a/0x70 kernel/time/timer.c:1650 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x832/0x1330 drivers/net/wireless/mac80211_hwsim.c:1315 Code: ff e8 82 f3 af fc 48 8d bb 9d 12 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 76 08 00 00 <44> 0f b6 bb 9d 12 00 00 31 ff 44 89 fe e8 7c f4 af fc 45 84 ff 74 RSP: 0018:ffff8880ba107c28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8880aee959c0 RCX: ffffffff84b4dc80 RDX: 0000000000000005 RSI: ffffffff84b4dc8e RDI: ffff8880aee96c5d RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8c65b05b R12: ffff888041e81d00 R13: ffff88803ab53180 R14: ffff88803ab53298 R15: 0000000000000001 mac80211_hwsim_tx_frame+0x12b/0x210 drivers/net/wireless/mac80211_hwsim.c:1556 mac80211_hwsim_beacon_tx+0x3f8/0x680 drivers/net/wireless/mac80211_hwsim.c:1595 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:317 [inline] RIP: 0010:PageCompound include/linux/page-flags.h:156 [inline] RIP: 0010:page_mapcount include/linux/mm.h:640 [inline] RIP: 0010:zap_pte_range mm/memory.c:1351 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1452 [inline] RIP: 0010:zap_pud_range mm/memory.c:1481 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1502 [inline] RIP: 0010:unmap_page_range+0x12f9/0x2a70 mm/memory.c:1523 Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19 14 00 00 83 ac 9c 00 01 00 00 01 31 f6 4c 89 ef e8 9a 8a 04 00 4c 89 e8 <48> c1 e8 03 42 80 3c 30 00 0f 85 e8 13 00 00 49 8b 5d 00 31 ff 48 RSP: 0018:ffff8880200d7768 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffffea000140d000 RBX: 0000000000000000 RCX: 1ffff110153fe126 RDX: 0000000000000000 RSI: ffffffff818e2c26 RDI: 0000000000000286 RBP: ffffea000140d008 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000100 R13: ffffea000140d000 R14: dffffc0000000000 R15: 00007f938efd6000 unmap_single_vma+0x198/0x300 mm/memory.c:1568 unmap_vmas+0xa9/0x180 mm/memory.c:1598 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1015 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1036 exit_mm kernel/exit.c:549 [inline] do_exit+0xaf0/0x2be0 kernel/exit.c:877 do_group_exit+0x125/0x310 kernel/exit.c:993 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e229 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:00007f938e4cec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 000000000000000d RBX: 0000000000000003 RCX: 000000000045e229 RDX: 0000000000000000 RSI: 0000000000000803 RDI: 0000000000000010 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffe128d0e3f R14: 00007f938e4cf9c0 R15: 000000000119bf8c