Bluetooth: hci7: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:24972] Modules linked in: irq event stamp: 2131857 hardirqs last enabled at (2131856): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2131857): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2122952): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2122957): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 24972 Comm: syz-executor.7 Not tainted 6.12.0-next-20241118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:srso_safe_ret+0x0/0x20 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 b8 <48> 8d 64 24 08 c3 cc cc 0f ae e8 e8 f0 ff ff ff 0f 0b 66 66 2e 0f RSP: 0018:ffff88806cf09540 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007f273e7a8b19 RCX: ffffffff81009b12 RDX: ffff888040ac0000 RSI: ffffffff81009b20 RDI: 0000000000000007 RBP: 00007f273e7a8b19 R08: ffffffff86bfba44 R09: ffff88806cf095e8 R10: 00007f273e7a8000 R11: 00000000000c3926 R12: ffff88806cf09670 R13: 0000000000000000 R14: ffff888040ac0000 R15: 0000000000092820 FS: 00007f273bd1e700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f273e7fa570 CR3: 0000000041a82000 CR4: 0000000000350ef0 Call Trace: srso_return_thunk+0x5/0x5f core_kernel_text+0x24/0xa0 kernel_text_address+0x11/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x28/0x160 Code: 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 48 8b 18 <48> 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff88803fc9f670 EFLAGS: 00000246 RAX: ffff888016784000 RBX: ffff88800cf3b818 RCX: ffffea000059e100 RDX: 0000000000000000 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: ffff888008c4f780 R08: ffff888016784de0 R09: 00000000000d0009 R10: ffffea000059e100 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803fc9f6a8 R14: ffff888016784de0 R15: ffff888016784de0 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_noprof+0x300/0x3d0 jbd2__journal_start+0x193/0x6b0 __ext4_journal_start_sb+0x183/0x600 ext4_dirty_inode+0xa5/0x130 __mark_inode_dirty+0x1c1/0xd40 generic_update_time+0xcb/0xf0 touch_atime+0x4bb/0x590 step_into+0x1291/0x1ff0 walk_component+0xf5/0x5b0 link_path_walk.part.0+0x683/0xd50 path_parentat+0xa8/0x1b0 __filename_parentat+0x20e/0x660 filename_create+0xa3/0x4a0 do_mkdirat+0x9b/0x350 __x64_sys_mkdirat+0x84/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f273e7a8b19 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:00007f273bd1e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f273e8bbf60 RCX: 00007f273e7a8b19 RDX: 00000000000001ff RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f273e802f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe91ba32ef R14: 00007f273bd1e300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop5: detected capacity change from 0 to 10 loop5: detected capacity change from 0 to 10 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 48 8b 07 mov (%rdi),%rax 5: 48 85 c0 test %rax,%rax 8: 0f 84 41 01 00 00 je 0x14f e: 41 57 push %r15 10: 41 56 push %r14 12: 41 55 push %r13 14: 49 89 fd mov %rdi,%r13 17: 41 54 push %r12 19: 49 89 f4 mov %rsi,%r12 1c: 55 push %rbp 1d: 53 push %rbx 1e: eb 3e jmp 0x5e 20: 48 63 95 c0 00 00 00 movslq 0xc0(%rbp),%rdx 27: 48 8b 18 mov (%rax),%rbx * 2a: 48 89 ef mov %rbp,%rdi <-- trapping instruction 2d: 48 29 d0 sub %rdx,%rax 30: 48 89 c6 mov %rax,%rsi 33: 49 89 c6 mov %rax,%r14 36: e8 e7 f0 ff ff callq 0xfffff122 3b: 49 89 c7 mov %rax,%r15 3e: 66 90 xchg %ax,%ax