INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.7' (ECDSA) to the list of known hosts. 2018/03/26 11:26:08 parsed 1 programs 2018/03/26 11:26:08 executed programs: 0 syzkaller login: [ 25.752140] IPVS: ftp: loaded support on port[0] = 21 [ 25.794316] detected buffer overflow in memcpy [ 25.799270] ------------[ cut here ]------------ [ 25.804014] kernel BUG at lib/string.c:1052! [ 25.808448] invalid opcode: 0000 [#1] SMP KASAN [ 25.813105] Dumping ftrace buffer: [ 25.816616] (ftrace buffer empty) [ 25.820299] Modules linked in: [ 25.823473] CPU: 0 PID: 4211 Comm: syz-executor0 Not tainted 4.16.0-rc7+ #277 [ 25.830722] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.840054] RIP: 0010:fortify_panic+0x13/0x20 [ 25.844516] RSP: 0018:ffff8801bccaf8f0 EFLAGS: 00010286 [ 25.849848] RAX: 0000000000000022 RBX: 1ffff10037995f23 RCX: 0000000000000000 [ 25.857094] RDX: 0000000000000022 RSI: 1ffff10037995ed3 RDI: ffffed0037995f12 [ 25.864340] RBP: ffff8801bccaf8f0 R08: 0000000000000000 R09: 0000000000000000 [ 25.871594] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8801bccaf998 [ 25.878855] R13: ffff8801bccaf938 R14: ffff8801bccafa58 R15: 000000000000fa00 [ 25.886099] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009f8f900 [ 25.894299] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 25.900154] CR2: 0000000008138024 CR3: 00000001ccb50005 CR4: 00000000001606f0 [ 25.907402] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.914657] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.921913] Call Trace: [ 25.924479] ucma_join_ip_multicast+0x37a/0x3c0 [ 25.929122] ? ucma_join_multicast+0x130/0x130 [ 25.933680] ? check_same_owner+0x320/0x320 [ 25.937975] ? do_raw_spin_trylock+0x190/0x190 [ 25.942534] ? __might_sleep+0x95/0x190 [ 25.946487] ? kasan_check_write+0x14/0x20 [ 25.950695] ucma_write+0x2d6/0x3d0 [ 25.954306] ? ucma_join_multicast+0x130/0x130 [ 25.958882] ? ucma_close_id+0x60/0x60 [ 25.962755] ? ucma_close_id+0x60/0x60 [ 25.966629] __vfs_write+0xef/0x970 [ 25.970237] ? kernel_read+0x120/0x120 [ 25.974109] ? __do_page_fault+0x5f7/0xc90 [ 25.978329] ? security_file_permission+0x89/0x1e0 [ 25.983235] ? rw_verify_area+0xe5/0x2b0 [ 25.987268] ? __fdget_raw+0x20/0x20 [ 25.990956] vfs_write+0x189/0x510 [ 25.994469] SyS_write+0xef/0x220 [ 25.997904] ? __do_page_fault+0x3d6/0xc90 [ 26.002120] ? SyS_read+0x220/0x220 [ 26.005724] ? do_fast_syscall_32+0x156/0xf9f [ 26.010190] ? SyS_read+0x220/0x220 [ 26.013793] do_fast_syscall_32+0x3ec/0xf9f [ 26.018091] ? do_int80_syscall_32+0x9c0/0x9c0 [ 26.022648] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.027376] ? syscall_return_slowpath+0x2ac/0x550 [ 26.032278] ? prepare_exit_to_usermode+0x350/0x350 [ 26.037284] ? sysret32_from_system_call+0x5/0x3c [ 26.042103] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.046923] entry_SYSENTER_compat+0x70/0x7f [ 26.051304] RIP: 0023:0xf7f3ec99 [ 26.054640] RSP: 002b:00000000ffe9b98c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 26.062322] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000040 [ 26.069563] RDX: 0000000000000038 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.076807] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.084053] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 26.091309] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 26.098560] Code: 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 89 df e8 b2 e8 e2 fb eb de 55 48 89 fe 48 c7 c7 00 7b 98 86 48 89 e5 e8 55 48 94 fb <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 [ 26.117657] RIP: fortify_panic+0x13/0x20 RSP: ffff8801bccaf8f0 [ 26.123671] ---[ end trace c61655b171bd6d64 ]--- [ 26.128439] Kernel panic - not syncing: Fatal exception [ 26.134224] Dumping ftrace buffer: [ 26.137735] (ftrace buffer empty) [ 26.141415] Kernel Offset: disabled [ 26.145013] Rebooting in 86400 seconds..