wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready device syz_tun entered promiscuous mode watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.3:15623] Modules linked in: irq event stamp: 6466647 hardirqs last enabled at (6466646): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (6466647): [<ffffffff844258ff>] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (6384196): [<ffffffff8118247f>] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (6384199): [<ffffffff8118247f>] irq_exit_rcu+0x11f/0x190 CPU: 1 PID: 15623 Comm: syz-executor.3 Not tainted 6.2.0-rc4-next-20230118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:hwsim_unicast_netgroup+0x2/0x630 Code: 24 08 e8 a1 65 7e fe 48 8b 44 24 28 48 8b 54 24 08 e9 a1 fd ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 41 55 41 54 55 53 48 83 ec 28 48 89 3c 24 48 89 74 24 10 89 RSP: 0018:ffff88806cf09b90 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 0000000000000003 RSI: ffff888045e4bdc0 RDI: ffff888016bdb3a0 RBP: ffff888045e4bdc0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803ddf8000 R13: ffff888016bd8de0 R14: ffff888045e4bc80 R15: ffff888016bdb3a0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f701823b718 CR3: 0000000016394000 CR4: 0000000000350ee0 Call Trace: <IRQ> mac80211_hwsim_tx_frame_nl+0xb11/0xc20 mac80211_hwsim_tx_frame+0x123/0x2a0 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+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unmap_page_range+0xdbc/0x2d90 Code: 8e 3b 16 00 00 41 80 4d 20 10 48 85 db 0f 84 20 fd ff ff e8 c6 04 dc ff 48 8d 43 08 48 89 44 24 50 48 c1 e8 03 42 80 3c 30 00 <0f> 85 1f 16 00 00 48 8b 6b 08 31 ff 49 89 ec 41 83 e4 01 4c 89 e6 RSP: 0018:ffff888044eaf700 EFLAGS: 00000246 RAX: 1ffffd40001ecec1 RBX: ffffea0000f67600 RCX: 0000000000000000 RDX: ffff88803e298000 RSI: ffffffff816d7daa RDI: ffff888044eafaf0 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 800000003d9d8007 R13: ffff888044eafad8 R14: dffffc0000000000 R15: 00007f7019600000 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x225/0x370 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0xf5/0x190 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f701ac998ac Code: Unable to access opcode bytes at 0x7f701ac99882. RSP: 002b:00007f701825b030 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: 0000000000000014 RBX: 00007f701825b0f0 RCX: 00007f701ac998ac RDX: 0000000000000014 RSI: 00007f701825b140 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f701825b084 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f701825b140 R14: 0000000000000005 R15: 0000000000000000 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 15110 Comm: syz-executor.7 Not tainted 6.2.0-rc4-next-20230118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lapic_next_deadline+0x25/0x50 Code: 90 90 90 90 90 f3 0f 1e fa 0f ae f0 0f ae e8 0f 31 48 c1 e2 20 b9 e0 06 00 00 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 0f 30 <66> 90 31 c0 e9 46 91 34 03 48 89 c6 31 d2 bf e0 06 00 00 e8 03 71 RSP: 0018:ffff88806ce09500 EFLAGS: 00000016 RAX: 0000019f45801fb0 RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 000000000000019f RSI: ffff88806ce28140 RDI: 000000000000054a RBP: ffff88806ce28140 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000f24 R11: 0000000000000001 R12: 000000000000054a R13: 0000000000000000 R14: 0000000000000001 R15: ffff88806ce2b8c0 FS: 00007f1647bbd700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00066a000 CR3: 0000000038734000 CR4: 0000000000350ef0 Call Trace: <IRQ> clockevents_program_event+0x248/0x360 tick_program_event+0xb0/0x150 hrtimer_interrupt+0x36a/0x770 __sysvec_apic_timer_interrupt+0x148/0x510 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__orc_find+0x83/0xf0 Code: 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 <48> 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 RSP: 0018:ffff88806ce096e0 EFLAGS: 00000246 RAX: fffffffffb4037ae RBX: ffffffff85d62394 RCX: ffffffff81165c0a RDX: 0000000000000000 RSI: ffffffff860620ec RDI: ffffffff85d62394 RBP: ffffffff85d62394 R08: ffffffff860620ec R09: ffffffff86061fdc R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffffffff85d62394 R13: ffffffff85d62394 R14: ffffffff85d62394 R15: dffffc0000000000 unwind_next_frame+0x2b1/0x2130 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_node+0x187/0x310 __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 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0xfd9/0x2130 Code: 09 00 00 41 80 7e 40 00 0f 85 e0 f3 ff ff 80 3d 7d df bb 04 00 0f 85 d3 f3 ff ff e9 15 59 1f 03 48 b8 00 00 00 00 00 fc ff df <49> 8d 7e 50 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 46 0e 00 00 4c RSP: 0018:ffff888039967070 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff85fa75b0 RBP: ffff888039967148 R08: ffffffff863c9c16 R09: ffffffff863c9c1a R10: 0000000000000001 R11: 0000000000038001 R12: ffff888039967131 R13: ffff888039967150 R14: ffff8880399670f0 R15: ffffffff863c9c1b 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 kmemdup+0x2c/0x60 neigh_parms_alloc+0x82/0x4e0 ipv6_add_dev+0x33c/0x12c0 addrconf_notify+0xc33/0x2530 raw_notifier_call_chain+0xb7/0x110 call_netdevice_notifiers_info+0xb5/0x130 register_netdevice+0xf47/0x1530 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: 0033:0x7f164a647b19 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:00007f1647bbd188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f164a75af60 RCX: 00007f164a647b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f164a6a1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb1bcf7bf R14: 00007f1647bbd300 R15: 0000000000022000 </TASK> device syz_tun left promiscuous mode mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium ---------------- Code disassembly (best guess): 0: 24 08 and $0x8,%al 2: e8 a1 65 7e fe callq 0xfe7e65a8 7: 48 8b 44 24 28 mov 0x28(%rsp),%rax c: 48 8b 54 24 08 mov 0x8(%rsp),%rdx 11: e9 a1 fd ff ff jmpq 0xfffffdb7 16: 66 90 xchg %ax,%ax 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 41 57 push %r15 * 2a: 41 56 push %r14 <-- trapping instruction 2c: 41 55 push %r13 2e: 41 54 push %r12 30: 55 push %rbp 31: 53 push %rbx 32: 48 83 ec 28 sub $0x28,%rsp 36: 48 89 3c 24 mov %rdi,(%rsp) 3a: 48 89 74 24 10 mov %rsi,0x10(%rsp) 3f: 89 .byte 0x89