watchdog: BUG: soft lockup - CPU#1 stuck for 24s! [syz-executor.6:19819] Modules linked in: irq event stamp: 4349705 hardirqs last enabled at (4349704): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4349705): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4322302): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4322305): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 19819 Comm: syz-executor.6 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x80 Code: 7e 60 e8 a3 ff ff ff 31 c0 e9 dc f4 32 03 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 34 24 65 48 8b 15 90 2a b2 7e 65 8b 05 91 2a b2 RSP: 0018:ffff88806cf09d78 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88803dcd8c40 RCX: ffffffff833a0c92 RDX: ffff88803fab3700 RSI: ffffffff845cb3ab RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88803fab4138 R10: 0000000000000000 R11: 00000000000c2f81 R12: ffff88803dcda600 R13: 0000000000000000 R14: ffff88802d6ea8a0 R15: 0000000000000002 FS: 00007f41ed9e1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6acb53a018 CR3: 00000000391fe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __iterate_interfaces+0x2d0/0x5d0 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+0x94/0xc0 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 c1 a0 ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff88803f41fa90 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000d000c RCX: 00000000000d000d RDX: ffff88800e60acb8 RSI: ffffea0000398280 RDI: 0000000000089800 RBP: ffff88803f41fb30 R08: 0000000000000001 R09: 00000000000d000c R10: ffffea0000398201 R11: 0000000000000000 R12: ffffea0000398280 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888008c4f780 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_lru_noprof+0x303/0x3c0 __d_alloc+0x31/0x990 d_alloc_pseudo+0x1d/0xc0 alloc_file_pseudo+0xcc/0x200 sock_alloc_file+0x53/0x1d0 __sys_socket+0x1bc/0x260 __x64_sys_socket+0x73/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f41f046bb19 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:00007f41ed9e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f41f057ef60 RCX: 00007f41f046bb19 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 0000000000000002 RBP: 00007f41f04c5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffddf9378df R14: 00007f41ed9e1300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__unwind_start+0x2cc/0x7c0 Code: 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e ed 02 00 00 41 c7 07 00 00 00 00 48 83 c4 18 5b <5d> 41 5c 41 5d 41 5e 41 5f e9 d6 ba 6f 03 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88806ce097c8 EFLAGS: 00000296 RAX: 1ffff1100d9c1308 RBX: ffffffff813e8f70 RCX: ffff88806ce09898 RDX: ffff88806ce0a000 RSI: ffff88806ce09890 RDI: ffff88806ce09808 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88806ce09838 R10: 000000000003c001 R11: 0000000000003f0d R12: ffffed100d9c1301 R13: ffffed100d9c1300 R14: ffff88806ce09840 R15: ffff88806ce097f8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5054f47af0 CR3: 000000000e408000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x63/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 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+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 69 41 40 00 0f 1f 44 00 00 fb f4 e9 5c 28 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85a07e10 EFLAGS: 00000202 RAX: 00000000001971c1 RBX: 0000000000000000 RCX: ffffffff848238d7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812ad1ed RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6c70 R10: ffff88806ce36383 R11: 0000000000000000 R12: ffffffff863f2748 R13: 1ffffffff0b40fc7 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fd/0x3b0 cpu_startup_entry+0x4f/0x60 rest_init+0x164/0x290 start_kernel+0x40d/0x530 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcb/0xe0 common_startup_64+0x12c/0x138 loop4: detected capacity change from 0 to 5152 loop4: detected capacity change from 0 to 5152 loop4: detected capacity change from 0 to 5152 ---------------- Code disassembly (best guess): 0: 7e 60 jle 0x62 2: e8 a3 ff ff ff callq 0xffffffaa 7: 31 c0 xor %eax,%eax 9: e9 dc f4 32 03 jmpq 0x332f4ea e: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 15: 00 00 00 00 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 48 8b 34 24 mov (%rsp),%rsi 32: 65 48 8b 15 90 2a b2 mov %gs:0x7eb22a90(%rip),%rdx # 0x7eb22aca 39: 7e 3a: 65 gs 3b: 8b .byte 0x8b 3c: 05 .byte 0x5 3d: 91 xchg %eax,%ecx 3e: 2a .byte 0x2a 3f: b2 .byte 0xb2