[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.116' (ECDSA) to the list of known hosts. syzkaller login: [ 35.190522] IPVS: ftp: loaded support on port[0] = 21 [ 35.281315] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 35.293555] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 35.309210] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 35.316636] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 35.340450] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 35.346731] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 35.354378] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 35.361379] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program [ 35.429385] FAULT_INJECTION: forcing a failure. [ 35.429385] name failslab, interval 1, probability 0, space 0, times 1 [ 35.440771] CPU: 0 PID: 8114 Comm: syz-executor204 Not tainted 4.19.211-syzkaller #0 [ 35.448645] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 [ 35.458005] Call Trace: [ 35.460596] dump_stack+0x1fc/0x2ef [ 35.464222] should_fail.cold+0xa/0xf [ 35.468009] ? setup_fault_attr+0x200/0x200 [ 35.472314] ? lock_acquire+0x170/0x3c0 [ 35.476277] __should_failslab+0x115/0x180 [ 35.480498] should_failslab+0x5/0x10 [ 35.484281] kmem_cache_alloc_node+0x245/0x3b0 [ 35.488849] __alloc_skb+0x71/0x560 [ 35.492541] netlink_dump+0x55f/0xc10 [ 35.496335] __netlink_dump_start+0x4e9/0x6f0 [ 35.500901] ? genl_lock_dumpit+0x90/0x90 [ 35.505040] genl_family_rcv_msg+0xa76/0xc40 [ 35.509451] ? genl_rcv+0x40/0x40 [ 35.512887] ? genl_rcv_msg+0x12f/0x160 [ 35.516844] ? genl_lock_dumpit+0x90/0x90 [ 35.520977] ? genl_lock_done+0xc0/0xc0 [ 35.524936] ? genl_unlock+0x20/0x20 [ 35.528645] ? mark_held_locks+0xf0/0xf0 [ 35.532715] ? __radix_tree_lookup+0x216/0x370 [ 35.537309] genl_rcv_msg+0xbf/0x160 [ 35.541029] netlink_rcv_skb+0x160/0x440 [ 35.545073] ? genl_family_rcv_msg+0xc40/0xc40 [ 35.549652] ? netlink_ack+0xae0/0xae0 [ 35.553528] ? genl_rcv+0x15/0x40 [ 35.556965] genl_rcv+0x24/0x40 [ 35.560244] netlink_unicast+0x4d5/0x690 [ 35.564290] ? netlink_sendskb+0x110/0x110 [ 35.568513] ? _copy_from_iter_full+0x229/0x7c0 [ 35.573254] ? __phys_addr_symbol+0x2c/0x70 [ 35.577583] ? __check_object_size+0x17b/0x3e0 [ 35.582178] netlink_sendmsg+0x6c3/0xc50 [ 35.586225] ? aa_af_perm+0x230/0x230 [ 35.590025] ? nlmsg_notify+0x1f0/0x1f0 [ 35.593985] ? kernel_recvmsg+0x220/0x220 [ 35.598138] ? nlmsg_notify+0x1f0/0x1f0 [ 35.602120] sock_sendmsg+0xc3/0x120 [ 35.605828] ___sys_sendmsg+0x7bb/0x8e0 [ 35.609800] ? check_preemption_disabled+0x41/0x280 [ 35.614816] ? copy_msghdr_from_user+0x440/0x440 [ 35.619561] ? proc_fail_nth_write+0x95/0x1d0 [ 35.624042] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.628958] ? debug_check_no_obj_freed+0x201/0x490 [ 35.633962] ? __vfs_write+0xff/0x770 [ 35.637767] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.642693] ? common_file_perm+0x4e5/0x850 [ 35.647116] ? kernel_read+0x110/0x110 [ 35.651387] ? trace_hardirqs_off+0x64/0x200 [ 35.657343] ? fsnotify+0x84e/0xe10 [ 35.660956] ? vfs_write+0x3d7/0x540 [ 35.664660] ? __fdget+0x1a0/0x230 [ 35.668188] __x64_sys_sendmsg+0x132/0x220 [ 35.672503] ? __sys_sendmsg+0x1b0/0x1b0 [ 35.676550] ? vfs_write+0x393/0x540 [ 35.680276] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 35.685651] ? trace_hardirqs_off_caller+0x6e/0x210 [ 35.690675] ? do_syscall_64+0x21/0x620 [ 35.694647] do_syscall_64+0xf9/0x620 [ 35.698458] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.703633] RIP: 0033:0x7fd10b68e229 [ 35.707334] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 [ 35.726231] RSP: 002b:00007ffe6fc3f618 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.733929] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd10b68e229 [ 35.741191] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 35.748447] RBP: 00007ffe6fc3f630 R08: 0000000000000001 R09: 000000000000000d [ 35.755701] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 35.762970] R13: 00007ffe6fc3f69a R14: 0000000000000004 R15: 00007ffe6fc3f6d0 [ 35.819085] kasan: CONFIG_KASAN_INLINE enabled [ 35.823784] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.831503] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.837749] CPU: 1 PID: 3606 Comm: kworker/1:2 Not tainted 4.19.211-syzkaller #0 [ 35.845283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 [ 35.854639] Workqueue: events netlink_sock_destruct_work [ 35.860093] RIP: 0010:klist_iter_exit+0x21/0x80 [ 35.864755] Code: 66 0f 1f 84 00 00 00 00 00 41 54 55 53 48 89 fb e8 34 69 74 f9 48 8d 6b 08 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 <80> 3c 02 00 75 40 4c 8b 63 08 4d 85 e4 74 2e e8 0b 69 74 f9 31 f6 [ 35.883652] RSP: 0018:ffff8880a88c7c48 EFLAGS: 00010202 [ 35.889006] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 35.896286] RDX: 0000000000000001 RSI: ffffffff87ee1c3c RDI: 0000000000000000 [ 35.903542] RBP: 0000000000000008 R08: 0000000000000000 R09: fffffbfff15cf8ac [ 35.910798] R10: ffffffff8ae7c567 R11: 0000000000074071 R12: 0000000000000000 [ 35.918054] R13: ffffffff896f11a0 R14: ffff8880ba12a8c0 R15: ffff8880ba12f000 [ 35.925326] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.933537] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.939404] CR2: 00007fd10b70a330 CR3: 00000000a16c2000 CR4: 00000000003406e0 [ 35.946664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.953924] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.961299] Call Trace: [ 35.963877] nfc_genl_dump_devices_done+0x31/0x50 [ 35.968710] genl_lock_done+0x82/0xc0 [ 35.972503] ? genl_unlock+0x20/0x20 [ 35.976311] netlink_sock_destruct+0x96/0x280 [ 35.980791] ? __netlink_create+0x270/0x270 [ 35.985098] __sk_destruct+0x4b/0x8a0 [ 35.988887] __sk_free+0x165/0x3b0 [ 35.992416] sk_free+0x3b/0x50 [ 35.995596] process_one_work+0x864/0x1570 [ 35.999818] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 36.004475] worker_thread+0x64c/0x1130 [ 36.008438] ? __kthread_parkme+0x133/0x1e0 [ 36.012747] ? process_one_work+0x1570/0x1570 [ 36.017227] kthread+0x33f/0x4