Bluetooth: hci4: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.2:7487] Modules linked in: irq event stamp: 16517253 hardirqs last enabled at (16517252): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (16517253): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (16497504): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (16497507): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 7487 Comm: syz-executor.2 Not tainted 6.1.0-rc7-next-20221205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1c2/0x2130 Code: 8d 43 ff 39 c6 0f 83 8c 15 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 6c f3 48 86 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 28 RSP: 0018:ffff88806cf097f0 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 000000000002d1ff RSI: 000000000002d1ff RDI: ffffffff86543b68 RBP: ffff88806cf098c8 R08: ffffffff863cdd70 R09: ffffffff863cdd74 R10: ffff88806cf09ff8 R11: 0000000000038001 R12: ffff88806cf098b1 R13: ffff88806cf098d0 R14: ffff88806cf09870 R15: ffffffff83d1fffe FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33424000 CR3: 0000000018e04000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000602 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 __kmem_cache_free+0xcf/0x410 skb_release_data+0x6d8/0x810 consume_skb+0xcb/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__dentry_kill+0x40e/0x5c0 Code: ef e8 06 67 b8 02 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e ee 00 00 00 8b 5d 00 <31> ff 41 89 dc 41 81 e4 00 04 00 00 44 89 e6 e8 3e 0b c0 ff 45 85 RSP: 0018:ffff888008f9f838 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000008008 RCX: ffffffff812c8e15 RDX: 1ffff11003729fac RSI: 0000000000000004 RDI: ffff888008f9f7c8 RBP: ffff88801b94fd60 R08: 0000000000000001 R09: ffff888008f9f7cb R10: ffffed10011f3ef9 R11: 0000000000000001 R12: ffff88801b94f888 R13: ffff88801b94fdf0 R14: ffff88801b94fe38 R15: dffffc0000000000 dput+0x668/0xe10 debugfs_remove+0x5d/0x80 hci_conn_cleanup+0x37c/0x780 hci_conn_del+0x28f/0x8e0 hci_conn_hash_flush+0x195/0x230 hci_dev_close_sync+0x57f/0xff0 hci_unregister_dev+0x15e/0x410 vhci_release+0x80/0x100 __fput+0x263/0xa40 task_work_run+0x174/0x280 do_exit+0xa8e/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21b7/0x22f0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f2a37078b19 Code: Unable to access opcode bytes at 0x7f2a37078aef. RSP: 002b:00007f2a345ee188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000005 RBX: 00007f2a3718bf60 RCX: 00007f2a37078b19 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007f2a370d2f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd7e3c747f R14: 00007f2a345ee300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 8d 43 ff lea -0x1(%rbx),%eax 3: 39 c6 cmp %eax,%esi 5: 0f 83 8c 15 00 00 jae 0x1597 b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 12: fc ff df 15: 89 f2 mov %esi,%edx 17: 48 8d 3c 95 6c f3 48 lea -0x79b70c94(,%rdx,4),%rdi 1e: 86 1f: 48 89 f9 mov %rdi,%rcx 22: 48 c1 e9 03 shr $0x3,%rcx 26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 c8 cmp %cl,%al 35: 7c 27 jl 0x5e 37: 84 c9 test %cl,%cl 39: 74 23 je 0x5e 3b: 48 89 54 24 28 mov %rdx,0x28(%rsp)