Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.4:4148] Modules linked in: irq event stamp: 17184045 hardirqs last enabled at (17184044): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (17184045): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (17168058): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (17168061): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4148 Comm: syz-executor.4 Not tainted 5.10.233 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire+0x1b9/0x470 kernel/locking/lockdep.c:5534 Code: 31 db 7e e8 39 91 ff ff b8 ff ff ff ff 48 83 c4 20 65 0f c1 05 58 31 db 7e 83 f8 01 4c 8b 54 24 08 0f 85 48 02 00 00 41 52 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff88806ce09a88 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff1100d9c1353 RCX: 0000000000e45a65 RDX: 1ffff110092927b8 RSI: c2be682c00bf480b RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8686a6e7 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff84ff9a20 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2fd9a57ac0 CR3: 000000001b0b0000 CR4: 0000000000350ef0 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:303 [inline] rcu_read_lock include/linux/rcupdate.h:717 [inline] __ieee80211_beacon_get+0xa7/0x1440 net/mac80211/tx.c:4805 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __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+0x80/0xa0 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+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:do_slab_free mm/slub.c:3122 [inline] RIP: 0010:___cache_free+0x1f7/0x360 mm/slub.c:3156 Code: e7 7a 6c 81 e8 1a cb ba ff 48 89 ef e8 02 82 ff ff 49 8b 04 24 65 48 8b 50 08 65 48 03 05 59 9a 95 7e 48 8b 3c 24 48 39 78 10 <0f> 85 20 01 00 00 48 8b 00 41 8b 4c 24 28 48 89 04 0b 49 8b 3c 24 RSP: 0018:ffff88804861f610 EFLAGS: 00000206 RAX: ffff88806ce3e730 RBX: ffff88800faa5800 RCX: ffffea000077463f RDX: 000000000000b29d RSI: ffffea0000000000 RDI: ffffea00003ea940 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff816cb200 R10: ffff8880170af3c0 R11: 0000000000000001 R12: ffff8880080418c0 R13: ffffea00003ea940 R14: ffffffff80000000 R15: ffff8880493e7800 qlink_free mm/kasan/quarantine.c:151 [inline] qlist_free_all+0x59/0xe0 mm/kasan/quarantine.c:170 quarantine_reduce+0x184/0x210 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0xa2/0xd0 mm/kasan/common.c:442 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc_trace+0x133/0x320 mm/slub.c:2921 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:664 [inline] kobject_uevent_env+0x22b/0xfd0 lib/kobject_uevent.c:539 device_del+0xa8f/0x1180 drivers/base/core.c:3200 device_unregister+0x11/0x30 drivers/base/core.c:3223 hci_conn_del_sysfs+0x9e/0xd0 net/bluetooth/hci_sysfs.c:77 hci_conn_cleanup+0x2c6/0x5d0 net/bluetooth/hci_conn.c:140 hci_conn_del+0x23e/0x650 net/bluetooth/hci_conn.c:645 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:1572 hci_dev_do_close+0x719/0x1240 net/bluetooth/hci_core.c:1784 hci_unregister_dev+0x179/0x460 net/bluetooth/hci_core.c:3854 vhci_release+0x70/0xf0 drivers/bluetooth/hci_vhci.c:345 __fput+0x285/0x9f0 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:185 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xb6f/0x2600 kernel/exit.c:860 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2762 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f345b7b1a04 Code: Unable to access opcode bytes at RIP 0x7f345b7b19da. RSP: 002b:00007f3458d74060 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: 0000000000000004 RBX: 00007f345b911f60 RCX: 00007f345b7b1a04 RDX: 0000000000000002 RSI: 00007f3458d740f0 RDI: 00000000ffffff9c RBP: 00007f3458d740f0 R08: 0000000000000000 R09: 00007f3458d73f70 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 00007ffd2efeceaf R14: 00007f3458d74300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: e8 39 91 ff ff callq 0xffff913e 5: b8 ff ff ff ff mov $0xffffffff,%eax a: 48 83 c4 20 add $0x20,%rsp e: 65 0f c1 05 58 31 db xadd %eax,%gs:0x7edb3158(%rip) # 0x7edb316e 15: 7e 16: 83 f8 01 cmp $0x1,%eax 19: 4c 8b 54 24 08 mov 0x8(%rsp),%r10 1e: 0f 85 48 02 00 00 jne 0x26c 24: 41 52 push %r10 26: 9d popfq * 27: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2e: fc ff df 31: 48 01 c3 add %rax,%rbx 34: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 3b: 48 rex.W 3c: c7 .byte 0xc7