[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 17.861132] audit: type=1400 audit(1520896828.493:6): avc: denied { map } for pid=4091 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. syzkaller login: [ 24.206888] audit: type=1400 audit(1520896834.839:7): avc: denied { map } for pid=4105 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/12 23:20:35 parsed 1 programs 2018/03/12 23:20:35 executed programs: 0 [ 24.455086] audit: type=1400 audit(1520896835.087:8): avc: denied { map } for pid=4105 comm="syz-execprog" path="/root/syzkaller-shm186702042" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 24.467755] IPVS: ftp: loaded support on port[0] = 21 [ 24.511700] detected buffer overflow in memcpy [ 24.516434] ------------[ cut here ]------------ [ 24.521164] kernel BUG at lib/string.c:1052! [ 24.525745] invalid opcode: 0000 [#1] SMP KASAN [ 24.530400] Dumping ftrace buffer: [ 24.533909] (ftrace buffer empty) [ 24.537587] Modules linked in: [ 24.540755] CPU: 0 PID: 4113 Comm: syz-executor0 Not tainted 4.16.0-rc5+ #261 [ 24.548002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.557339] RIP: 0010:fortify_panic+0x13/0x20 [ 24.561803] RSP: 0018:ffff8801ca81f8f0 EFLAGS: 00010286 [ 24.567142] RAX: 0000000000000022 RBX: 1ffff10039503f23 RCX: 0000000000000000 [ 24.574389] RDX: 0000000000000022 RSI: 1ffff10039503ed3 RDI: ffffed0039503f12 [ 24.581628] RBP: ffff8801ca81f8f0 R08: 0000000000000000 R09: 0000000000000000 [ 24.588871] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8801ca81f998 [ 24.596113] R13: ffff8801ca81f938 R14: ffff8801ca81fa58 R15: 000000000000fa00 [ 24.603353] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000a12a900 [ 24.611554] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 24.617407] CR2: 0000000008138024 CR3: 00000001cbb58004 CR4: 00000000001606f0 [ 24.624648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.631888] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.639129] Call Trace: [ 24.641691] ucma_join_ip_multicast+0x36b/0x3b0 [ 24.646331] ? ucma_join_multicast+0x110/0x110 [ 24.650890] ? check_same_owner+0x320/0x320 [ 24.655185] ? do_raw_spin_trylock+0x190/0x190 [ 24.659755] ? __might_sleep+0x95/0x190 [ 24.663702] ? kasan_check_write+0x14/0x20 [ 24.667911] ucma_write+0x2d6/0x3d0 [ 24.671511] ? ucma_join_multicast+0x110/0x110 [ 24.676063] ? ucma_resolve_route+0x1a0/0x1a0 [ 24.680539] ? ucma_resolve_route+0x1a0/0x1a0 [ 24.685005] __vfs_write+0xef/0x970 [ 24.688609] ? rcu_note_context_switch+0x710/0x710 [ 24.693511] ? kernel_read+0x120/0x120 [ 24.697395] ? __might_sleep+0x95/0x190 [ 24.701347] ? _cond_resched+0x14/0x30 [ 24.705208] ? __inode_security_revalidate+0xd9/0x130 [ 24.710367] ? avc_policy_seqno+0x9/0x20 [ 24.714400] ? selinux_file_permission+0x82/0x460 [ 24.719224] ? security_file_permission+0x89/0x1e0 [ 24.724129] ? rw_verify_area+0xe5/0x2b0 [ 24.728159] ? __fdget_raw+0x20/0x20 [ 24.731846] vfs_write+0x189/0x510 [ 24.735357] SyS_write+0xef/0x220 [ 24.738779] ? __do_page_fault+0x3d6/0xc90 [ 24.742984] ? SyS_read+0x220/0x220 [ 24.746594] ? do_fast_syscall_32+0x156/0xf9f [ 24.751064] ? SyS_read+0x220/0x220 [ 24.754665] do_fast_syscall_32+0x3ec/0xf9f [ 24.758961] ? do_int80_syscall_32+0x9c0/0x9c0 [ 24.763513] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.768253] ? syscall_return_slowpath+0x2ac/0x550 [ 24.773156] ? prepare_exit_to_usermode+0x350/0x350 [ 24.778145] ? sysret32_from_system_call+0x5/0x3c [ 24.782968] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.787794] entry_SYSENTER_compat+0x70/0x7f [ 24.792170] RIP: 0023:0xf7f9ec99 [ 24.795502] RSP: 002b:00000000ff8172cc EFLAGS: 00000282 ORIG_RAX: 0000000000000004 [ 24.803184] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000100 [ 24.810430] RDX: 0000000000000063 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.817669] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 24.824929] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 24.832171] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 24.839416] Code: 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 89 df e8 42 2c e3 fb eb de 55 48 89 fe 48 c7 c7 80 75 98 86 48 89 e5 e8 85 95 94 fb <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 [ 24.858487] RIP: fortify_panic+0x13/0x20 RSP: ffff8801ca81f8f0 [ 24.864469] ---[ end trace 38d88b3acc1e3095 ]--- [ 24.869219] Kernel panic - not syncing: Fatal exception [ 24.874933] Dumping ftrace buffer: [ 24.878445] (ftrace buffer empty) [ 24.882125] Kernel Offset: disabled [ 24.885728] Rebooting in 86400 seconds..