Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.6:3996] Modules linked in: irq event stamp: 21588953 hardirqs last enabled at (21588952): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (21588953): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (21575790): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (21575793): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 3996 Comm: syz-executor.6 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:348 [inline] RIP: 0010:deref_stack_reg+0xa3/0x160 arch/x86/kernel/unwind_orc.c:357 Code: 02 00 0f 85 9c 00 00 00 49 8b 44 24 10 49 39 ed 77 13 48 39 e8 76 0e 48 8d 55 08 48 39 d0 72 05 49 39 d5 72 3f 49 8d 7c 24 28 <49> 8d 4c 24 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806cf095a0 EFLAGS: 00000216 RAX: ffff88806cf0a000 RBX: ffff88806cf096f0 RCX: ffffffff85d47342 RDX: 1ffff1100d9e12d7 RSI: ffff8880473af4e8 RDI: ffff88806cf096d0 RBP: ffff8880473af4e8 R08: ffffffff85d47347 R09: ffff8880473af4f0 R10: 0000000000032042 R11: 1ffff1100d9e12c2 R12: ffff88806cf096a8 R13: ffff88806cf02000 R14: 1ffff1100d9e12c2 R15: ffffffff85d47346 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fedecf49344 CR3: 000000000c93a000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0xbf8/0x1a90 arch/x86/kernel/unwind_orc.c:536 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 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+0x13b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:200 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:448 netdev_alloc_skb include/linux/skbuff.h:2855 [inline] dev_alloc_skb include/linux/skbuff.h:2868 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __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:refill_obj_stock+0x18c/0x320 mm/memcontrol.c:3233 Code: f4 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 45 01 00 00 44 89 65 18 41 81 fc 00 10 00 00 77 56 4d 85 f6 75 4a 41 55 9d <48> 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 51 c0 b1 02 48 b8 00 RSP: 0018:ffff8880473af5d0 EFLAGS: 00000282 RAX: 000000000144a603 RBX: ffff88806cf38cf8 RCX: 1ffffffff0d159ea RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff816e7fa8 RBP: ffff88806cf38ce0 R08: 0000000000000001 R09: ffffffff8686c74f R10: fffffbfff0d0d8e9 R11: 0000000000000001 R12: 0000000000000420 R13: 0000000000000282 R14: 0000000000000200 R15: 0000000000000318 memcg_slab_free_hook mm/slab.h:382 [inline] memcg_slab_free_hook mm/slab.h:351 [inline] do_slab_free mm/slub.c:3105 [inline] ___cache_free+0x101/0x360 mm/slub.c:3156 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: 0033:0x7f9fe8accb19 Code: Unable to access opcode bytes at RIP 0x7f9fe8accaef. RSP: 002b:00007f9fe6042218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f9fe8bdff68 RCX: 00007f9fe8accb19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9fe8bdff68 RBP: 00007f9fe8bdff60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9fe8bdff6c R13: 00007fff0bf13d4f R14: 00007f9fe6042300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 ---------------- Code disassembly (best guess): 0: 02 00 add (%rax),%al 2: 0f 85 9c 00 00 00 jne 0xa4 8: 49 8b 44 24 10 mov 0x10(%r12),%rax d: 49 39 ed cmp %rbp,%r13 10: 77 13 ja 0x25 12: 48 39 e8 cmp %rbp,%rax 15: 76 0e jbe 0x25 17: 48 8d 55 08 lea 0x8(%rbp),%rdx 1b: 48 39 d0 cmp %rdx,%rax 1e: 72 05 jb 0x25 20: 49 39 d5 cmp %rdx,%r13 23: 72 3f jb 0x64 25: 49 8d 7c 24 28 lea 0x28(%r12),%rdi * 2a: 49 8d 4c 24 20 lea 0x20(%r12),%rcx <-- trapping instruction 2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 36: fc ff df 39: 48 89 fa mov %rdi,%rdx 3c: 48 c1 ea 03 shr $0x3,%rdx