Bluetooth: hci5: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.6:5135] Modules linked in: irq event stamp: 15039643 hardirqs last enabled at (15039642): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (15039643): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (15025362): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (15025365): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 5135 Comm: syz-executor.6 Not tainted 5.10.229 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_save+0x90/0xc0 kernel/stacktrace.c:113 Code: 30 81 89 74 24 28 48 8d 74 24 20 89 54 24 2c 48 c7 44 24 30 00 00 00 00 65 48 8b 14 25 80 6f 02 00 e8 14 43 d9 ff 8b 44 24 30 <48> c7 03 00 00 00 00 c7 43 08 00 00 00 00 48 8b 4c 24 78 65 48 2b RSP: 0018:ffff88806cf099d8 EFLAGS: 00000282 RAX: 0000000000000010 RBX: ffffed100d9e133b RCX: 1ffff1100d9e1301 RDX: 1ffff11001cdc27a RSI: ffffffff84000d02 RDI: ffff88806cf09a04 RBP: ffff88800e6e1290 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e1315 R12: ffff88800e6e13ec R13: ffff88800e6e12d8 R14: ffff88800e6e12e0 R15: ffff888048bf4c00 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bac97c8928 CR3: 000000000e40e000 CR4: 0000000000350ee0 Call Trace: __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 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] __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:143 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:211 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:447 netdev_alloc_skb include/linux/skbuff.h:2854 [inline] dev_alloc_skb include/linux/skbuff.h:2867 [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: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:write_comp_data+0x2f/0x80 kernel/kcov.c:218 Code: 05 a6 b8 c1 7e 65 48 8b 34 25 80 6f 02 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 fc 13 00 00 85 c0 74 4f 8b 86 d8 13 00 00 <83> f8 03 75 44 48 8b 86 e0 13 00 00 8b b6 dc 13 00 00 4c 8b 00 48 RSP: 0018:ffff888047f276b0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888046d1c090 RCX: ffffffff8167c6ac RDX: 0000000000000010 RSI: ffff88804c490000 RDI: 0000000000000004 RBP: ffffea00011312c0 R08: 0000000000000000 R09: ffffea00011312c7 R10: 000000000000019c R11: 0000000000000001 R12: 0000000000000010 R13: dffffc0000000000 R14: 000000000000019c R15: 0000000000000000 free_pages_and_swap_cache+0x5c/0x290 mm/swap_state.c:353 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu+0xe9/0x6e0 mm/mmu_gather.c:247 zap_pte_range mm/memory.c:1355 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0x17d9/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3235 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 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: 0033:0x7f0bf1a28b19 Code: Unable to access opcode bytes at RIP 0x7f0bf1a28aef. RSP: 002b:00007f0beef9e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f0bf1b3bf68 RCX: 00007f0bf1a28b19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0bf1b3bf68 RBP: 00007f0bf1b3bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0bf1b3bf6c R13: 00007ffca5504c1f R14: 00007f0beef9e300 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:706 ---------------- Code disassembly (best guess): 0: 30 81 89 74 24 28 xor %al,0x28247489(%rcx) 6: 48 8d 74 24 20 lea 0x20(%rsp),%rsi b: 89 54 24 2c mov %edx,0x2c(%rsp) f: 48 c7 44 24 30 00 00 movq $0x0,0x30(%rsp) 16: 00 00 18: 65 48 8b 14 25 80 6f mov %gs:0x26f80,%rdx 1f: 02 00 21: e8 14 43 d9 ff callq 0xffd9433a 26: 8b 44 24 30 mov 0x30(%rsp),%eax * 2a: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) <-- trapping instruction 31: c7 43 08 00 00 00 00 movl $0x0,0x8(%rbx) 38: 48 8b 4c 24 78 mov 0x78(%rsp),%rcx 3d: 65 gs 3e: 48 rex.W 3f: 2b .byte 0x2b