loop0: detected capacity change from 0 to 264192 loop0: detected capacity change from 0 to 264192 watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.1:8302] Modules linked in: irq event stamp: 2480683 hardirqs last enabled at (2480682): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2480683): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2424976): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2424979): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 8302 Comm: syz-executor.1 Not tainted 6.13.0-rc1-next-20241206 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_stack_walk+0x8d/0xf0 Code: 8b 95 68 ff ff ff 85 d2 75 24 eb 36 4c 89 e7 e8 99 35 7a 03 84 c0 74 2a 48 8d bd 68 ff ff ff e8 69 80 07 00 8b 85 68 ff ff ff <85> c0 74 14 48 8d bd 68 ff ff ff e8 c3 7d 07 00 48 89 c6 48 85 c0 RSP: 0018:ffff88806ce096b8 EFLAGS: 00000292 RAX: 0000000000000002 RBX: ffffffff815f0170 RCX: ffffffff86799301 RDX: ffff88806ce0a000 RSI: 0000000000000000 RDI: ffff88806ce096c8 RBP: ffff88806ce09750 R08: ffffffff867993a4 R09: ffff88806ce096f8 R10: 000000000003a7a3 R11: 0000000000008474 R12: ffff88806ce09780 R13: 0000000000000000 R14: ffff888014e83780 R15: 0000000000000820 FS: 00007fe53ab7a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f0574925f8 CR3: 000000001aea4000 CR4: 0000000000350ef0 Call Trace: 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 __alloc_skb+0x2ad/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/0xa80 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:__slab_free+0x7f/0x310 Code: c1 e8 1f 4d 85 ed 66 89 5c 24 58 41 89 c6 41 0f 94 c2 66 85 db 74 05 45 84 d2 74 05 45 84 f6 74 42 41 8b 7f 08 4c 8b 4c 24 58 <4c> 89 ea 4c 89 e6 4c 8b 44 24 20 e8 f1 9f ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff88803dadf640 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000d000c RCX: 00000000000d000d RDX: ffff88800ce17940 RSI: ffffea00003385c0 RDI: 0000000000089800 RBP: ffff88803dadf6e0 R08: 0000000000000001 R09: 00000000000d000c R10: ffffea0000338501 R11: 0000000000000000 R12: ffffea00003385c0 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888008c4f780 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_lru_noprof+0x14c/0x3c0 __d_alloc+0x31/0x990 path_from_stashed+0x7e9/0x1040 ns_get_path+0x60/0x90 proc_ns_get_link+0x10e/0x240 step_into+0x1930/0x1fa0 path_openat+0x549/0x2990 do_filp_open+0x1e9/0x450 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe53d5b7a04 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007fe53ab7a0b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fe53d717f60 RCX: 00007fe53d5b7a04 RDX: 0000000000000000 RSI: 00007fe53d65df82 RDI: 00000000ffffff9c RBP: 00007fe53d65df82 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffe5e32337f R14: 00007fe53ab7a300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 8b 95 68 ff ff ff mov -0x98(%rbp),%edx 6: 85 d2 test %edx,%edx 8: 75 24 jne 0x2e a: eb 36 jmp 0x42 c: 4c 89 e7 mov %r12,%rdi f: e8 99 35 7a 03 callq 0x37a35ad 14: 84 c0 test %al,%al 16: 74 2a je 0x42 18: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 1f: e8 69 80 07 00 callq 0x7808d 24: 8b 85 68 ff ff ff mov -0x98(%rbp),%eax * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 14 je 0x42 2e: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 35: e8 c3 7d 07 00 callq 0x77dfd 3a: 48 89 c6 mov %rax,%rsi 3d: 48 85 c0 test %rax,%rax