[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 18.940714] audit: type=1400 audit(1520389326.859:6): avc: denied { map } for pid=4229 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 '10.128.0.47' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 28.269315] audit: type=1400 audit(1520389336.188:7): avc: denied { map } for pid=4243 comm="syzkaller511238" path="/root/syzkaller511238246" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 28.383381] kasan: CONFIG_KASAN_INLINE enabled [ 28.388149] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.395843] general protection fault: 0000 [#1] SMP KASAN [ 28.401375] Dumping ftrace buffer: [ 28.404899] (ftrace buffer empty) [ 28.408598] Modules linked in: [ 28.411780] CPU: 0 PID: 4294 Comm: syzkaller511238 Not tainted 4.16.0-rc4+ #343 [ 28.419210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.428554] RIP: 0010:rdma_disconnect+0x2d/0x200 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 28.433276] RSP: 0018:ffff8801cee7fa10 EFLAGS: 00010206 [ 28.438608] RAX: dffffc0000000000 RBX: 1ffff10039dcff49 RCX: ffffffff841bc3fc [ 28.445857] RDX: 0000000000000078 RSI: 0000000000000000 RDI: 0000000000000000 [ 28.453113] RBP: ffff8801cee7fa38 R08: 0000000000000000 R09: 0000000000000000 [ 28.460352] R10: ffffffff88613380 R11: 0000000000000000 R12: ffff8801af83a000 [ 28.467596] R13: 00000000000003c0 R14: 0000000000000000 R15: 00000000200001c8 [ 28.474850] FS: 00007f20217de700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.483056] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.488907] CR2: 00007f202179be78 CR3: 00000001dad71002 CR4: 00000000001606f0 [ 28.496147] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.503396] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.510643] Call Trace: [ 28.513208] ucma_disconnect+0xdf/0x150 [ 28.517152] ? ucma_init_qp_attr+0x3e0/0x3e0 [ 28.521533] ? kasan_check_write+0x14/0x20 [ 28.525737] ? _copy_from_user+0x99/0x110 [ 28.529869] ucma_write+0x2d6/0x3d0 [ 28.533486] ? ucma_init_qp_attr+0x3e0/0x3e0 [ 28.537881] ? ucma_resolve_route+0x1a0/0x1a0 [ 28.542362] ? ucma_resolve_route+0x1a0/0x1a0 [ 28.546827] __vfs_write+0xef/0x970 [ 28.550425] ? rcu_note_context_switch+0x710/0x710 [ 28.555322] ? kernel_read+0x120/0x120 [ 28.559178] ? __might_sleep+0x95/0x190 [ 28.563135] ? _cond_resched+0x14/0x30 [ 28.567018] ? __inode_security_revalidate+0xd9/0x130 [ 28.572196] ? avc_policy_seqno+0x9/0x20 [ 28.576231] ? selinux_file_permission+0x82/0x460 [ 28.581046] ? security_file_permission+0x89/0x1e0 [ 28.585947] ? rw_verify_area+0xe5/0x2b0 [ 28.589975] ? __fdget_raw+0x20/0x20 [ 28.593667] vfs_write+0x189/0x510 [ 28.597197] SyS_write+0xef/0x220 [ 28.600643] ? exit_to_usermode_loop+0x198/0x2f0 [ 28.605384] ? SyS_read+0x220/0x220 [ 28.608995] ? do_syscall_64+0xb7/0x940 [ 28.612943] ? SyS_read+0x220/0x220 [ 28.616538] do_syscall_64+0x281/0x940 [ 28.620400] ? syscall_return_slowpath+0x550/0x550 [ 28.625300] ? syscall_return_slowpath+0x2ac/0x550 [ 28.630211] ? prepare_exit_to_usermode+0x350/0x350 [ 28.635215] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.640563] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.645378] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.650536] RIP: 0033:0x4497c9 [ 28.653693] RSP: 002b:00007f20217ddda8 EFLAGS: 00000297 ORIG_RAX: 0000000000000001 [ 28.661374] RAX: ffffffffffffffda RBX: 00000000006dac5c RCX: 00000000004497c9 [ 28.668629] RDX: 000000000000000c RSI: 00000000200001c0 RDI: 0000000000000003 [ 28.675881] RBP: 00000000006dac58 R08: 0000000000000000 R09: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 28.683139] R10: 0000000000000000 R11: 0000000000000297 R12: 006d635f616d6472 [ 28.690393] R13: 2f646e6162696e69 R14: 666e692f7665642f R15: 0000000000000006 [ 28.697641] Code: 89 e5 41 57 41 56 49 89 fe 41 55 41 54 4d 8d ae c0 03 00 00 53 e8 34 42 55 fd 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 b8 01 00 00 4d 8b a6 c0 03 00 00 4d 85 e4 0f [ 28.716724] RIP: rdma_disconnect+0x2d/0x200 RSP: ffff8801cee7fa10 [ 28.723033] ---[ end trace 4f57ea5e283fed6e ]--- [ 28.727793] Kernel panic - not syncing: Fatal exception [ 28.733542] Dumping ftrace buffer: [ 28.737060] (ftrace buffer empty) [ 28.740740] Kernel Offset: disabled [ 28.744338] Rebooting in 86400 seconds..