EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:6052] Modules linked in: irq event stamp: 3639647 hardirqs last enabled at (3639646): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3639647): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3608980): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3608999): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 6052 Comm: syz-executor.5 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_next_frame+0xb79/0x2490 Code: 01 48 89 c7 48 c1 ef 03 0f b6 34 37 4c 89 c7 83 e7 07 40 38 fa 40 0f 9e c7 84 d2 0f 95 c2 40 84 d7 0f 85 fe 15 00 00 83 e0 07 <40> 38 c6 0f 9e c2 40 84 f6 0f 95 c0 84 c2 0f 85 e7 15 00 00 0f b6 RSP: 0018:ffff88806cf095f8 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000001 RCX: ffffffff86adf376 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff88806cf096c0 R08: ffffffff86adf37a R09: ffff88806cf096a8 R10: 000000000003c001 R11: 0000000000095d41 R12: ffff88806cf096c8 R13: ffff88806cf096b0 R14: ffff88804129f980 R15: ffff88806cf09668 FS: 00007f02e1191700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557c35dc18 CR3: 000000003e58e000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 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 __alloc_skb+0x2ad/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __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: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:ffff88804129f5a0 EFLAGS: 00000246 RAX: ffff88800d1a24a0 RBX: ffff888009f91a68 RCX: ffffea0000346880 RDX: 0000000000000000 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: ffff888008c4f780 R08: ffff88800cba6128 R09: 00000000000d000b R10: ffffea000032e900 R11: 00000000000007e0 R12: 0000000000000000 R13: ffff88804129f5d8 R14: ffff88800cba6128 R15: ffff88800cba6128 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __proc_create+0x2b7/0x8d0 _proc_mkdir+0xb2/0x200 proc_net_ns_init+0x265/0x410 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e00 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f02e3c1bb19 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:00007f02e1191188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f02e3d2ef60 RCX: 00007f02e3c1bb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f02e3c75f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff85cd64bf R14: 00007f02e1191300 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:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806ce099f8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff84845a6f RDX: fffffbfff0c1a969 RSI: 0000000000000004 RDI: ffffffff860d4b40 RBP: ffffffff860d4b40 R08: 0000000000000000 R09: fffffbfff0c1a968 R10: ffffffff860d4b43 R11: 5050505001000011 R12: 1ffff1100d9c1340 R13: 0000000000000003 R14: fffffbfff0c1a968 R15: ffff88806ce09a30 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055de700d41e0 CR3: 000000000df1e000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __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: 00000206 RAX: 000000000011d111 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 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 89 c7 mov %rax,%rdi 3: 48 c1 ef 03 shr $0x3,%rdi 7: 0f b6 34 37 movzbl (%rdi,%rsi,1),%esi b: 4c 89 c7 mov %r8,%rdi e: 83 e7 07 and $0x7,%edi 11: 40 38 fa cmp %dil,%dl 14: 40 0f 9e c7 setle %dil 18: 84 d2 test %dl,%dl 1a: 0f 95 c2 setne %dl 1d: 40 84 d7 test %dl,%dil 20: 0f 85 fe 15 00 00 jne 0x1624 26: 83 e0 07 and $0x7,%eax * 29: 40 38 c6 cmp %al,%sil <-- trapping instruction 2c: 0f 9e c2 setle %dl 2f: 40 84 f6 test %sil,%sil 32: 0f 95 c0 setne %al 35: 84 c2 test %al,%dl 37: 0f 85 e7 15 00 00 jne 0x1624 3d: 0f .byte 0xf 3e: b6 .byte 0xb6