watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.6:8324] Modules linked in: irq event stamp: 5089663 hardirqs last enabled at (5089662): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5089663): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5063414): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5063417): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 8324 Comm: syz-executor.6 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x9b6/0x2130 Code: 85 2c 12 00 00 49 89 46 58 48 3d 10 48 11 81 0f 84 4a 0e 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 e9 48 c1 e9 03 80 3c 11 00 <0f> 85 9a 12 00 00 48 8b 14 24 49 89 46 58 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88806ce09678 EFLAGS: 00000246 RAX: ffffffff817cc602 RBX: 0000000000000002 RCX: 1ffff1100d9c12ea RDX: dffffc0000000000 RSI: ffff88806ce09828 RDI: ffff88806ce09828 RBP: ffff88806ce09750 R08: ffffffff860906b2 R09: ffffffff860906b6 R10: ffffed100d9c12ec R11: ffff88806ce09738 R12: ffff88806ce09739 R13: ffff88806ce09758 R14: ffff88806ce096f8 R15: ffffffff860906b7 FS: 00007ff33b3a9700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffce923ef88 CR3: 000000004dec0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc40 kmem_cache_alloc_node+0x283/0x420 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3d9/0x1310 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xc70 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:lock_acquire.part.0+0x14d/0x340 Code: 87 84 48 83 c4 20 e8 42 cd 12 03 b8 ff ff ff ff 65 0f c1 05 9d a5 d6 7e 83 f8 01 0f 85 9f 01 00 00 48 85 ed 0f 85 90 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff88804024f0f8 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff11008049e21 RCX: 0000000000003fdb RDX: 1ffff11008f88b33 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff876328d7 R10: fffffbfff0ec651a R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff856c6c60 fs_reclaim_acquire+0xda/0x170 kmem_cache_alloc+0x40/0x410 __create_object+0x3d/0xc40 kmem_cache_alloc+0x273/0x410 __kernfs_new_node+0xd4/0x8c0 kernfs_new_node+0x97/0x120 __kernfs_create_file+0x55/0x350 sysfs_add_file_mode_ns+0x21c/0x440 internal_create_group+0x322/0xb20 internal_create_groups.part.0+0x90/0x140 sysfs_create_groups+0x29/0x50 device_add+0x1437/0x1ec0 netdev_register_kobject+0x17e/0x3b0 register_netdevice+0xd60/0x1530 register_netdev+0x31/0x60 sit_init_net+0x358/0xa00 ops_init+0xbb/0x680 setup_net+0x40c/0x9d0 copy_net_ns+0x31c/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x3b7/0x4a0 copy_process+0x29e3/0x7160 kernel_clone+0xeb/0x8a0 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7ff33de33b19 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:00007ff33b3a9188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007ff33df46f60 RCX: 00007ff33de33b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007ff33de8df6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd82d17acf R14: 00007ff33b3a9300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 85 2c 12 test %ebp,(%rdx,%rdx,1) 3: 00 00 add %al,(%rax) 5: 49 89 46 58 mov %rax,0x58(%r14) 9: 48 3d 10 48 11 81 cmp $0xffffffff81114810,%rax f: 0f 84 4a 0e 00 00 je 0xe5f 15: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1c: fc ff df 1f: 48 89 e9 mov %rbp,%rcx 22: 48 c1 e9 03 shr $0x3,%rcx 26: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) * 2a: 0f 85 9a 12 00 00 jne 0x12ca <-- trapping instruction 30: 48 8b 14 24 mov (%rsp),%rdx 34: 49 89 46 58 mov %rax,0x58(%r14) 38: 48 rex.W 39: b8 00 00 00 00 mov $0x0,%eax 3e: 00 fc add %bh,%ah