watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.7:8424] Modules linked in: irq event stamp: 6006361 hardirqs last enabled at (6006360): [] asm_sysvec_apic_timer_interrupt+0x1b/0x20 hardirqs last disabled at (6006361): [] sysvec_apic_timer_interrupt+0xb/0xc0 softirqs last enabled at (5944728): [] __irq_exit_rcu+0x113/0x170 softirqs last disabled at (5944731): [] __irq_exit_rcu+0x113/0x170 CPU: 1 PID: 8424 Comm: syz-executor.7 Not tainted 5.19.0-rc5-next-20220706 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:lock_acquire+0x1db/0x530 Code: 02 b8 ff ff ff ff 65 0f c1 05 f9 ff d8 7e 83 f8 01 0f 85 c4 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff88806cf09508 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff1100d9e12a3 RCX: 00000000b9de1b21 RDX: 1ffff110034e912e RSI: 0000000000000103 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff86a607c7 R10: fffffbfff0d4c0f8 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff852049e0 R15: 0000000000000000 FS: 00007f4a7b9ce700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055aebe7dd000 CR3: 000000000d96a000 CR4: 0000000000350ee0 Call Trace: __is_insn_slot_addr+0x3d/0x250 kernel_text_address+0x40/0xb0 __kernel_text_address+0x9/0x30 unwind_get_return_address+0x51/0x90 arch_stack_walk+0x99/0xf0 stack_trace_save+0x8c/0xc0 kasan_save_stack+0x1e/0x40 __kasan_slab_alloc+0x66/0x80 kmem_cache_alloc+0x1b1/0x490 __create_object.isra.0+0x3d/0xc10 __kmalloc_node_track_caller+0x278/0x470 __alloc_skb+0xdd/0x340 skb_copy+0x139/0x3c0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1440 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x53b/0xa10 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_beacon+0xfd/0x200 __hrtimer_run_queues+0x5de/0xbc0 hrtimer_run_softirq+0x172/0x340 __do_softirq+0x1c8/0x8cc __irq_exit_rcu+0x113/0x170 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x8e/0xc0 asm_sysvec_apic_timer_interrupt+0x1b/0x20 RIP: 0010:idr_get_free+0x2a4/0x900 Code: 3f 45 89 fc 4a 8d 7c e3 28 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 57 05 00 00 49 8d 44 24 04 be 08 00 00 00 48 8b 6c c3 08 <48> 8d 83 28 02 00 00 48 89 c7 48 89 44 24 18 e8 58 6d 5c ff 4c 0f RSP: 0018:ffff88804648f0f0 EFLAGS: 00000246 RAX: 000000000000000a RBX: ffff888007c2fc80 RCX: 000000000000000c RDX: 0000000000040000 RSI: 0000000000000008 RDI: ffff888007c2fcd8 RBP: ffff88801e6e6942 R08: 0000000000000007 R09: 0000000000000002 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000006 R13: dffffc0000000000 R14: 000000000000000c R15: 0000000000000006 idr_alloc_u32+0x170/0x2d0 idr_alloc_cyclic+0x102/0x230 __kernfs_new_node+0x117/0x8b0 kernfs_new_node+0x93/0x120 __kernfs_create_file+0x51/0x350 sysfs_add_file_mode_ns+0x218/0x430 internal_create_group+0x322/0xb20 internal_create_groups.part.0+0x90/0x140 sysfs_create_groups+0x25/0x50 device_add+0x142f/0x1ec0 netdev_register_kobject+0x17a/0x3b0 register_netdevice+0xdc6/0x1510 register_netdev+0x2d/0x50 loopback_net_init+0x73/0x160 ops_init+0xb2/0x480 setup_net+0x40c/0x9d0 copy_net_ns+0x318/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x391/0x480 copy_process+0x2c61/0x6d60 kernel_clone+0xe7/0xa60 __do_sys_clone3+0x1cd/0x2d0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f4a7e458b19 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:00007f4a7b9ce188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f4a7e56bf60 RCX: 00007f4a7e458b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000480 RBP: 00007f4a7e4b2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe9868705f R14: 00007f4a7b9ce300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.19.0-rc5-next-20220706 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x120/0xc70 Code: 8b 84 24 80 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 c9 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f3 90 75 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff88806ce09a08 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8129da07 RDX: fffffbfff0ac7309 RSI: 0000000000000004 RDI: ffffffff85639840 RBP: ffffffff85639840 R08: 0000000000000000 R09: ffffffff85639843 R10: fffffbfff0ac7308 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0ac7308 R14: 0000000000000001 R15: 1ffff1100d9c1342 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055aebe786648 CR3: 000000000e572000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1d8/0x260 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1440 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x53b/0xa10 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_beacon+0xfd/0x200 __hrtimer_run_queues+0x5de/0xbc0 hrtimer_run_softirq+0x172/0x340 __do_softirq+0x1c8/0x8cc __irq_exit_rcu+0x113/0x170 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x8e/0xc0 asm_sysvec_apic_timer_interrupt+0x1b/0x20 RIP: 0010:default_idle+0xb/0x10 Code: c3 fe ff 4c 89 e2 48 89 ef 31 f6 5d 41 5c e9 1c 7d 20 fe cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d f7 74 46 00 fb f4 0f 1f 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 c0 6e 02 00 RSP: 0018:ffffffff85007e18 EFLAGS: 00000202 RAX: ffffffff841c0140 RBX: ffffffff85032900 RCX: ffffffff841a22f2 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88806ce33b53 R10: ffffed100d9c676a R11: 0000000000000001 R12: fffffbfff0a06520 R13: ffffffff858ea350 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x80/0xc0 do_idle+0x3b9/0x530 cpu_startup_entry+0x14/0x20 rest_init+0x162/0x250 arch_call_rest_init+0xf/0x14 start_kernel+0x4c1/0x4e2 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: 02 b8 ff ff ff ff add -0x1(%rax),%bh 6: 65 0f c1 05 f9 ff d8 xadd %eax,%gs:0x7ed8fff9(%rip) # 0x7ed90007 d: 7e e: 83 f8 01 cmp $0x1,%eax 11: 0f 85 c4 02 00 00 jne 0x2db 17: 48 83 7c 24 08 00 cmpq $0x0,0x8(%rsp) 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction 2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24