watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.7:58327] Modules linked in: irq event stamp: 4698877 hardirqs last enabled at (4698876): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4698877): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4679040): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4679043): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 58327 Comm: syz-executor.7 Not tainted 6.2.0-rc3-next-20230109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire+0x70/0xc0 Code: 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 59 4c 8b 0c 24 38 d0 7c 04 84 d2 75 44 8b 05 b5 b4 a4 04 85 c0 74 27 4c 89 7c 24 40 <48> 83 c4 08 41 89 d8 44 89 f1 5b 44 89 ea 44 89 e6 48 89 ef 5d 41 RSP: 0018:ffff88806cf09660 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8149ef14 RDX: 0000000000000000 RSI: 0000000000000105 RDI: 0000000000000000 RBP: ffffffff856088a0 R08: 0000000000000000 R09: 0000000000000000 R10: fffffbfff0ba18ba R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: ffffffff8149ef14 FS: 00007f4c6fe23700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe2702acb8 CR3: 00000000379a6000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __is_insn_slot_addr+0x41/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x187/0x310 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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_is_held_type+0xfc/0x130 Code: a0 05 87 84 e8 b5 0e 00 00 b8 ff ff ff ff 65 0f c1 05 48 47 c0 7b 83 f8 01 75 26 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f e9 c6 3e 02 00 45 31 ed eb RSP: 0018:ffff888034e1eaa8 EFLAGS: 00000282 RAX: 0000000000000001 RBX: 0000000000000005 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffffffff856087e0 R08: 0000000000000000 R09: ffffffff85d0c5d7 R10: fffffbfff0ba18ba R11: 0000000000000001 R12: ffff8880451a3580 R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880451a3f80 rcu_read_lock_sched_held+0x42/0x80 lock_release+0x56b/0x760 __is_insn_slot_addr+0x147/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x172/0x300 __create_object+0x3d/0xc40 kmem_cache_alloc+0x204/0x300 radix_tree_node_alloc.constprop.0+0x1e3/0x330 idr_get_free+0x4b8/0x910 idr_alloc_u32+0x174/0x2d0 idr_alloc_cyclic+0x106/0x230 __kernfs_new_node+0x117/0x8c0 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+0x711/0x1ec0 netdev_register_kobject+0x17e/0x3b0 register_netdevice+0xd60/0x1530 register_netdev+0x31/0x60 loopback_net_init+0x7a/0x170 ops_init+0xbb/0x6c0 setup_net+0x40c/0x9d0 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2a5e/0x7390 kernel_clone+0xeb/0x8c0 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f4c728adb19 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:00007f4c6fe23188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f4c729c0f60 RCX: 00007f4c728adb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f4c72907f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff76e523bf R14: 00007f4c6fe23300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc3-next-20230109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc90 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 e6 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ee 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806ce09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff84445edb RDX: fffffbfff0b48ac9 RSI: 0000000000000004 RDI: ffffffff85a45640 RBP: ffffffff85a45640 R08: 0000000000000000 R09: ffffffff85a45643 R10: fffffbfff0b48ac8 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48ac8 R14: 0000000000000001 R15: 1ffff1100d9c1346 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005627bdb7d50c CR3: 0000000019660000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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:default_idle+0xf/0x20 Code: e3 fe fd cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 73 45 3e 00 fb f4 90 44 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 RSP: 0018:ffffffff85407e20 EFLAGS: 00000206 RAX: ffffffff84443aa0 RBX: ffffffff854328c0 RCX: ffffffff84424842 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88806ce34f83 R10: ffffed100d9c69f0 R11: 0000000000000001 R12: fffffbfff0a86518 R13: ffffffff85d0c5d0 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x88/0xd0 do_idle+0x3bd/0x530 cpu_startup_entry+0x18/0x20 rest_init+0x164/0x290 arch_call_rest_init+0x13/0x2c start_kernel+0x4a2/0x4c7 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: 83 e0 07 and $0x7,%eax 3: 48 c1 e9 03 shr $0x3,%rcx 7: 83 c0 03 add $0x3,%eax a: 0f b6 14 11 movzbl (%rcx,%rdx,1),%edx e: 59 pop %rcx f: 4c 8b 0c 24 mov (%rsp),%r9 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 44 jne 0x5f 1b: 8b 05 b5 b4 a4 04 mov 0x4a4b4b5(%rip),%eax # 0x4a4b4d6 21: 85 c0 test %eax,%eax 23: 74 27 je 0x4c 25: 4c 89 7c 24 40 mov %r15,0x40(%rsp) * 2a: 48 83 c4 08 add $0x8,%rsp <-- trapping instruction 2e: 41 89 d8 mov %ebx,%r8d 31: 44 89 f1 mov %r14d,%ecx 34: 5b pop %rbx 35: 44 89 ea mov %r13d,%edx 38: 44 89 e6 mov %r12d,%esi 3b: 48 89 ef mov %rbp,%rdi 3e: 5d pop %rbp 3f: 41 rex.B