[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.15' (ECDSA) to the list of known hosts. syzkaller login: [ 28.185706] IPVS: ftp: loaded support on port[0] = 21 [ 28.234052] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 28.261040] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 28.268242] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 28.277045] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 28.300252] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 28.307148] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 28.314383] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 28.321733] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 28.332161] kasan: CONFIG_KASAN_INLINE enabled [ 28.336826] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.346587] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.352805] Modules linked in: [ 28.355974] CPU: 0 PID: 8012 Comm: syz-executor489 Not tainted 4.14.206-syzkaller #0 [ 28.363831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.373176] task: ffff8880964ee300 task.stack: ffff8880955b0000 [ 28.379210] RIP: 0010:ioctl_standard_call+0x19b/0x260 [ 28.384370] RSP: 0018:ffff8880955b7b48 EFLAGS: 00010246 [ 28.389704] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11012ab6f5a [ 28.397121] RDX: 0000000000000000 RSI: ffff8880964eeb88 RDI: ffff888097381060 [ 28.404371] RBP: ffff888097380e80 R08: ffff8880ba42abf0 R09: 0000000000000000 [ 28.411615] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880955b7cb8 [ 28.418855] R13: 0000000000008b04 R14: 0000000000000000 R15: ffff8880955b7bf0 [ 28.426100] FS: 0000000002341880(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.434298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.440151] CR2: 00007f07d93df6c0 CR3: 000000009c3a1000 CR4: 00000000001406f0 [ 28.447398] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.454653] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.461898] Call Trace: [ 28.464463] ? cfg80211_wext_freq+0x160/0x160 [ 28.468935] ? iw_handler_get_private+0x190/0x190 [ 28.473748] wireless_process_ioctl+0x312/0x450 [ 28.478390] ? wireless_process_ioctl+0x450/0x450 [ 28.483220] wext_handle_ioctl+0x17e/0x190 [ 28.487428] ? call_commit_handler+0x100/0x100 [ 28.491983] ? __might_fault+0x177/0x1b0 [ 28.496031] ? _copy_from_user+0x96/0x100 [ 28.500152] dev_ioctl+0x24c/0xbe0 [ 28.503664] ? dev_ifsioc+0x7d0/0x7d0 [ 28.507525] ? do_huge_pmd_anonymous_page+0x732/0x1670 [ 28.512790] ? __handle_mm_fault+0x80f/0x4620 [ 28.517258] sock_ioctl+0x164/0x4c0 [ 28.520858] ? sock_release+0x1e0/0x1e0 [ 28.524805] do_vfs_ioctl+0x75a/0xff0 [ 28.528577] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.532960] ? lock_downgrade+0x740/0x740 [ 28.537096] ? security_file_ioctl+0x83/0xb0 [ 28.541480] SyS_ioctl+0x7f/0xb0 [ 28.544817] ? do_vfs_ioctl+0xff0/0xff0 [ 28.548763] do_syscall_64+0x1d5/0x640 [ 28.552627] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.557791] RIP: 0033:0x441529 [ 28.560955] RSP: 002b:00007ffc0fe95788 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 28.568658] RAX: ffffffffffffffda RBX: 00007ffc0fe957b0 RCX: 0000000000441529 [ 28.575909] RDX: 00000000200000c0 RSI: 0000000000008b04 RDI: 0000000000000003 [ 28.583159] RBP: 0000000000000003 R08: 0000001300000000 R09: 0000001300000000 [ 28.590402] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 [ 28.597646] R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004 [ 28.604893] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c8 00 00 00 48 8b 9d e0 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 99 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 [ 28.623962] RIP: ioctl_standard_call+0x19b/0x260 RSP: ffff8880955b7b48 [ 28.631689] ---[ end trace e45806b6217eeeda ]--- [ 28.636446] Kernel panic - not syncing: Fatal exception [ 28.642462] Kernel Offset: disabled [ 28.646071] Rebooting in 86400 seconds..