watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.0:16653] Modules linked in: irq event stamp: 2258527 hardirqs last enabled at (2258526): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2258527): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2248712): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2248719): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 16653 Comm: syz-executor.0 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x7e/0x170 Code: 0f 8e ad 00 00 00 31 c0 3b 6b 08 0f 83 81 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 0c 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 98 00 00 00 8b RSP: 0018:ffff88806ce09658 EFLAGS: 00000213 RAX: dffffc0000000000 RBX: ffff88806ce09740 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff845c74f6 RDI: ffff88806ce0974c RBP: 0000000000000008 R08: 0000000000000001 R09: ffff88806ce096b8 R10: 000000000003c001 R11: 00000000000b984c R12: ffff88806ce09740 R13: 0000000000000000 R14: ffff8880323c9b80 R15: 0000000000082820 FS: 00007f31b09e7700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9b55a61b70 CR3: 0000000032912000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node_noprof+0x14c/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+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 c0 c4 f1 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 9e c4 f1 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff88803f27f710 EFLAGS: 00000286 RAX: ffff88800e7006f0 RBX: ffff88800e7006f0 RCX: ffff88808e7006f0 RDX: ffffea000039c000 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: 0000000000000000 R08: ffff8880162446f0 R09: 00000000000d000a R10: ffffea0000589100 R11: 00000000000007e0 R12: 0000000000000000 R13: ffff88803f27f748 R14: ffff8880162446f0 R15: ffff8880162446f0 kasan_quarantine_reduce+0x19f/0x240 __kasan_kmalloc+0x6f/0x90 __kmalloc_noprof+0x1f7/0x4b0 ops_init+0x77/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e90 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f31b3471b19 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:00007f31b09e7188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f31b3584f60 RCX: 00007f31b3471b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f31b34cbf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef1607e3f R14: 00007f31b09e7300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 Bluetooth: hci7: command 0x0406 tx timeout ---------------- Code disassembly (best guess): 0: 0f 8e ad 00 00 00 jle 0xb3 6: 31 c0 xor %eax,%eax 8: 3b 6b 08 cmp 0x8(%rbx),%ebp b: 0f 83 81 00 00 00 jae 0x92 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 48 8d 7b 0c lea 0xc(%rbx),%rdi 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 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 d0 cmp %dl,%al 35: 7c 08 jl 0x3f 37: 84 d2 test %dl,%dl 39: 0f 85 98 00 00 00 jne 0xd7 3f: 8b .byte 0x8b