watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.7:14013] Modules linked in: irq event stamp: 3771257 hardirqs last enabled at (3771256): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3771257): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3738402): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (3738405): [] irq_exit_rcu+0x11f/0x190 CPU: 1 PID: 14013 Comm: syz-executor.7 Not tainted 6.2.0-rc4-next-20230120 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 b9 95 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 54 47 4a 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 54 47 4a 86 49 RSP: 0018:ffff88806cf09640 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000001 RCX: 00000000000b5bd4 RDX: 0000000000036000 RSI: 0000000000036000 RDI: ffffffff8657c754 RBP: ffff88806cf09718 R08: ffffffff86471776 R09: ffffffff8647177a R10: ffff88806cf09ff8 R11: 0000000000038001 R12: ffff88806cf09701 R13: ffff88806cf09720 R14: ffff88806cf096c0 R15: ffffffff846000ad FS: 00007feb12b52700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ec21000 CR3: 000000001630e000 CR4: 0000000000350ee0 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+0x172/0x300 __create_object+0x3d/0xc40 __kmem_cache_alloc_node+0x1ed/0x2f0 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d3/0xb10 __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+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x115/0x1c0 Code: 39 43 28 75 61 48 c7 43 28 00 00 00 00 48 c7 c6 90 d5 7c 81 48 89 df e8 b9 56 af ff 48 85 ed 74 06 e8 1f b7 d3 ff fb 4d 85 ed <74> 21 5b 4c 89 ee 5d 4c 89 e7 41 5c 41 5d 41 5e 41 5f e9 54 fa ff RSP: 0018:ffff888045f67538 EFLAGS: 00000246 RAX: 000000000035ffcd RBX: ffff88806cf41af0 RCX: ffffffff812b8e3f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000200 R08: 0000000000000001 R09: ffffffff8765b96f R10: fffffbfff0ecb72d R11: 0000000000000001 R12: ffff888008795dc0 R13: 0000000000000000 R14: ffffea000107ce80 R15: 0000000000000002 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x172/0x300 __create_object+0x3d/0xc40 kmemleak_vmalloc+0x50/0x130 __vmalloc_node_range+0x1153/0x1340 __vmalloc_node+0xac/0xf0 n_tty_open+0x1a/0x170 tty_ldisc_open+0xa2/0x120 tty_ldisc_setup+0x94/0x110 tty_init_dev.part.0+0x1fa/0x5e0 tty_init_dev+0x5f/0x80 ptmx_open+0x114/0x370 chrdev_open+0x26c/0x6e0 do_dentry_open+0x6ca/0x12b0 path_openat+0x18ad/0x2750 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_openat+0x143/0x200 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7feb155dcb19 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:00007feb12b52188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007feb156eff60 RCX: 00007feb155dcb19 RDX: 0000000000000000 RSI: 0000000020000640 RDI: ffffffffffffff9c RBP: 00007feb15636f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc5a65ef7f R14: 00007feb12b52300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 48 89 54 24 28 mov %rdx,0x28(%rsp) 5: 48 89 74 24 20 mov %rsi,0x20(%rsp) a: 44 89 5c 24 18 mov %r11d,0x18(%rsp) f: e8 b9 95 6a 00 callq 0x6a95cd 14: 48 8b 54 24 28 mov 0x28(%rsp),%rdx 19: 48 8b 74 24 20 mov 0x20(%rsp),%rsi 1e: 44 8b 5c 24 18 mov 0x18(%rsp),%r11d 23: 8b 0c 95 54 47 4a 86 mov -0x79b5b8ac(,%rdx,4),%ecx * 2a: 8d 56 01 lea 0x1(%rsi),%edx <-- trapping instruction 2d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 34: fc ff df 37: 48 8d 3c 95 54 47 4a lea -0x79b5b8ac(,%rdx,4),%rdi 3e: 86 3f: 49 rex.WB