Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:4344] Modules linked in: irq event stamp: 4986007 hardirqs last enabled at (4986006): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4986007): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4983144): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4983147): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4344 Comm: syz-executor.3 Not tainted 5.10.230 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernel_text_address+0x70/0x120 kernel/extable.c:159 Code: 00 00 83 3d 45 6c 4b 04 01 76 24 e8 3a 39 12 00 84 c0 74 36 48 89 ef e8 5e a0 1b 00 84 c0 74 6a b8 01 00 00 00 48 83 c4 08 5d 1b 68 04 03 48 81 fd 00 30 e7 85 72 d3 48 81 fd a5 4f f5 85 72 RSP: 0018:ffff88806cf09708 EFLAGS: 00000296 RAX: 0000000000000001 RBX: ffffffff83c36131 RCX: 1ffff1100d9e1201 RDX: 1ffff1100d9e12f0 RSI: ffff88806cf09db8 RDI: ffffffff83c36131 RBP: ffff88806cf09780 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e12d4 R12: ffff88806cf097f0 R13: 0000000000000000 R14: ffff88801d22b480 R15: 0000000000000200 FS: 00007f526e69a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f260a362330 CR3: 000000001705e000 CR4: 0000000000350ee0 Call Trace: __kernel_text_address+0x9/0x40 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:323 [inline] unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:318 arch_stack_walk+0x99/0xf0 arch/x86/kernel/stacktrace.c:26 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] __kmalloc_node_track_caller+0x189/0x3b0 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:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:197 Code: 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 cd fd ff ff 90 48 8b 34 24 65 48 8b 14 25 80 6f 02 00 <65> 8b 05 ac b0 c1 7e a9 00 01 ff 00 74 0f f6 c4 01 74 35 8b 82 fc RSP: 0018:ffff8880490ef578 EFLAGS: 00000206 RAX: 0000000000000002 RBX: ffff888008868a58 RCX: ffffffff818fc5df RDX: ffff88801d22b480 RSI: ffffffff818fc50c RDI: 0000000000000005 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888008868a78 R13: 0000000000000003 R14: 0000000000000003 R15: ffff888008868a00 find_entry.isra.0+0x3c/0x1e0 fs/proc/proc_sysctl.c:133 find_subdir fs/proc/proc_sysctl.c:938 [inline] xlate_dir+0x135/0x240 fs/proc/proc_sysctl.c:1044 xlate_dir+0x98/0x240 fs/proc/proc_sysctl.c:1040 insert_links fs/proc/proc_sysctl.c:1231 [inline] insert_header+0x152/0xfc0 fs/proc/proc_sysctl.c:236 __register_sysctl_table+0x85e/0x1090 fs/proc/proc_sysctl.c:1354 ipv4_sysctl_init_net+0xfc/0x360 net/ipv4/sysctl_net_ipv4.c:1342 ops_init+0xbb/0x6b0 net/core/net_namespace.c:156 setup_net+0x2d8/0x810 net/core/net_namespace.c:354 copy_net_ns+0x2c0/0x5d0 net/core/net_namespace.c:495 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x3fb/0x4f0 kernel/nsproxy.c:179 copy_process+0x385b/0x7800 kernel/fork.c:2129 kernel_clone+0xe7/0x980 kernel/fork.c:2506 __do_sys_clone3+0x1e5/0x320 kernel/fork.c:2781 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f5271124b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f526e69a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f5271237f60 RCX: 00007f5271124b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000200 RBP: 00007f527117ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea6be984f R14: 00007f526e69a300 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: 00 00 add %al,(%rax) 2: 83 3d 45 6c 4b 04 01 cmpl $0x1,0x44b6c45(%rip) # 0x44b6c4e 9: 76 24 jbe 0x2f b: e8 3a 39 12 00 callq 0x12394a 10: 84 c0 test %al,%al 12: 74 36 je 0x4a 14: 48 89 ef mov %rbp,%rdi 17: e8 5e a0 1b 00 callq 0x1ba07a 1c: 84 c0 test %al,%al 1e: 74 6a je 0x8a 20: b8 01 00 00 00 mov $0x1,%eax 25: 48 83 c4 08 add $0x8,%rsp 29: 5d pop %rbp * 2a: e9 1b 68 04 03 jmpq 0x304684a <-- trapping instruction 2f: 48 81 fd 00 30 e7 85 cmp $0xffffffff85e73000,%rbp 36: 72 d3 jb 0xb 38: 48 81 fd a5 4f f5 85 cmp $0xffffffff85f54fa5,%rbp 3f: 72 .byte 0x72