loop7: detected capacity change from 0 to 264192 loop5: detected capacity change from 0 to 264192 loop2: detected capacity change from 0 to 264192 EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.1:15046] Modules linked in: irq event stamp: 5225655 hardirqs last enabled at (5225654): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5225655): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5198902): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (5198905): [] irq_exit_rcu+0x11f/0x190 CPU: 0 PID: 15046 Comm: syz-executor.1 Not tainted 6.2.0-rc4-next-20230117 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_get_return_address+0x50/0xa0 Code: 8b 03 85 c0 75 09 31 c0 5b 5d e9 1f de 31 03 48 b8 00 00 00 00 00 fc ff df 48 8d 6b 58 48 89 ea 48 c1 ea 03 80 3c 02 00 75 36 <48> 8b 7b 58 e8 47 11 0c 00 85 c0 74 cf 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88806ce096e8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806ce09700 RCX: 0000000000000000 RDX: 1ffff1100d9c12eb RSI: ffff888043c0ff58 RDI: ffff88806ce09700 RBP: ffff88806ce09758 R08: ffffffff864783a0 R09: ffffffff864783a4 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce097c8 R13: 0000000000000000 R14: ffff88800e343580 R15: 00000000000000f0 FS: 00007f4cfcbc4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe87036ff8 CR3: 0000000035e44000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: 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_node+0x215/0x310 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __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+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:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 56 b5 e7 fc 48 89 ef e8 5e 2e e8 fc 80 e7 02 74 06 e8 e4 2a 0c fd fb bf 01 00 00 00 39 7c dd fc 65 8b 05 1a 1e bf 7b 85 c0 74 07 5b 5d e9 4b 29 00 RSP: 0018:ffff888043c0f5c0 EFLAGS: 00000202 RAX: 000000000047c715 RBX: 0000000000000202 RCX: ffffffff812b827f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff8582cb60 R08: 0000000000000001 R09: ffffffff8765696f R10: fffffbfff0ecad2d R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000090 R14: 0000000000000202 R15: ffff888043c0f648 __stack_depot_save+0x28a/0x4e0 kasan_save_stack+0x35/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xff/0x510 mas_destroy+0x3ef/0x5f0 mas_store_prealloc+0xf4/0x160 do_mas_align_munmap.constprop.0+0x599/0xff0 do_mas_munmap+0x1ec/0x2c0 mmap_region+0x21f/0x1c20 do_mmap+0x82c/0xf50 do_shmat+0xeb3/0x1180 __x64_sys_shmat+0xd0/0x170 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f4cff64eb19 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:00007f4cfcbc4188 EFLAGS: 00000246 ORIG_RAX: 000000000000001e RAX: ffffffffffffffda RBX: 00007f4cff761f60 RCX: 00007f4cff64eb19 RDX: cf3caed3d8c7cb92 RSI: 0000000020ffc000 RDI: 0000000000000003 RBP: 00007f4cff6a8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc813c26f R14: 00007f4cfcbc4300 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: 8b 03 mov (%rbx),%eax 2: 85 c0 test %eax,%eax 4: 75 09 jne 0xf 6: 31 c0 xor %eax,%eax 8: 5b pop %rbx 9: 5d pop %rbp a: e9 1f de 31 03 jmpq 0x331de2e f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 16: fc ff df 19: 48 8d 6b 58 lea 0x58(%rbx),%rbp 1d: 48 89 ea mov %rbp,%rdx 20: 48 c1 ea 03 shr $0x3,%rdx 24: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 28: 75 36 jne 0x60 * 2a: 48 8b 7b 58 mov 0x58(%rbx),%rdi <-- trapping instruction 2e: e8 47 11 0c 00 callq 0xc117a 33: 85 c0 test %eax,%eax 35: 74 cf je 0x6 37: 48 rex.W 38: b8 00 00 00 00 mov $0x0,%eax 3d: 00 fc add %bh,%ah 3f: ff .byte 0xff