watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:7602] Modules linked in: irq event stamp: 4695231 hardirqs last enabled at (4695230): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4695231): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (4658252): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (4658255): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 7602 Comm: syz-executor.5 Not tainted 6.3.0-rc2-next-20230315 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x6d/0x22d0 Code: 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 6d 58 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 d9 19 00 00 49 8b 45 58 48 89 44 24 08 <49> 8d 45 48 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffff88806ce09620 EFLAGS: 00000246 RAX: ffffffff811711db RBX: ffffffff813a5940 RCX: 0000000000000001 RDX: 1ffff1100d9c12dd RSI: ffffffff811711db RDI: ffff88806ce09690 RBP: ffff88806ce096e8 R08: 0000000000000001 R09: ffff88806ce096d0 R10: 0000000000038001 R11: 0000000000000001 R12: ffff88806ce09758 R13: ffff88806ce09690 R14: ffff88803cf8d040 R15: 0000000000000001 FS: 00007f0912588700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005608c206ec98 CR3: 0000000043132000 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+0x59/0x70 kmem_cache_alloc+0x172/0x320 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x21f/0x330 __alloc_skb+0x28c/0x330 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d2/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0xcab/0x22d0 Code: 89 4c 24 28 4c 89 44 24 20 88 44 24 18 e8 ed 5c 6d 00 48 8b 4c 24 28 4c 8b 44 24 20 0f b6 44 24 18 e9 34 f8 ff ff 49 8d 76 f8 08 00 00 00 4c 89 ef 48 89 4c 24 28 4c 89 44 24 20 48 89 74 24 RSP: 0018:ffff8880163074b0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8607bb13 RCX: ffffffff8607bb0e RDX: 0000000000000000 RSI: ffff888016307568 RDI: 0000000000000001 RBP: ffff8880163075c8 R08: ffffffff8607bb12 R09: ffff888016307570 R10: 0000000000038001 R11: 0000000000000001 R12: ffff8880163075d0 R13: ffff888016307570 R14: ffff888016307570 R15: 0000000000000001 __unwind_start+0x513/0x7c0 arch_stack_walk+0x63/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free_bulk.part.0+0x210/0x670 mas_destroy+0x426/0xb60 dup_mmap+0xdd5/0x1780 copy_process+0x6ffc/0x74e0 kernel_clone+0xeb/0x8c0 __do_sys_fork+0x80/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f0915012b19 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:00007f0912588188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f0915125f60 RCX: 00007f0915012b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f091506cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3d44922f R14: 00007f0912588300 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: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 49 8d 6d 58 lea 0x58(%r13),%rbp 10: 48 89 ea mov %rbp,%rdx 13: 48 c1 ea 03 shr $0x3,%rdx 17: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1b: 0f 85 d9 19 00 00 jne 0x19fa 21: 49 8b 45 58 mov 0x58(%r13),%rax 25: 48 89 44 24 08 mov %rax,0x8(%rsp) * 2a: 49 8d 45 48 lea 0x48(%r13),%rax <-- trapping instruction 2e: 48 89 c2 mov %rax,%rdx 31: 48 89 04 24 mov %rax,(%rsp) 35: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3c: fc ff df 3f: 48 rex.W