[....] Starting enhanced syslogd: rsyslogd[ 15.392817] audit: type=1400 audit(1521319668.312:5): avc: denied { syslog } for pid=3907 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.917427] audit: type=1400 audit(1521319671.837:6): avc: denied { map } for pid=4047 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 Warning: Permanently added '10.128.0.38' (ECDSA) to the list of known hosts. [ 25.198465] audit: type=1400 audit(1521319678.118:7): avc: denied { map } for pid=4061 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 2018/03/17 20:47:58 parsed 1 programs 2018/03/17 20:47:58 executed programs: 0 [ 25.432496] audit: type=1400 audit(1521319678.352:8): avc: denied { map } for pid=4061 comm="syz-execprog" path="/root/syzkaller-shm791439770" 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 [ 25.464412] IPVS: ftp: loaded support on port[0] = 21 [ 25.493906] kasan: CONFIG_KASAN_INLINE enabled [ 25.498542] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.505906] general protection fault: 0000 [#1] SMP KASAN [ 25.511417] Dumping ftrace buffer: [ 25.514922] (ftrace buffer empty) [ 25.518600] Modules linked in: [ 25.521763] CPU: 0 PID: 4070 Comm: syz-executor0 Not tainted 4.16.0-rc5+ #267 [ 25.529002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.538329] RIP: 0010:rdma_join_multicast+0x46d/0x3bb0 [ 25.543571] RSP: 0018:ffff8801cd70f4a0 EFLAGS: 00010202 [ 25.548900] RAX: 0000000000000000 RBX: ffff8801d1642c00 RCX: 0000000000000029 [ 25.556139] RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000148 [ 25.563390] RBP: ffff8801cd70f7a0 R08: 0000000000000000 R09: 1ffff10039ae1e72 [ 25.570629] R10: ffff8801cd70f358 R11: 0000000000000001 R12: ffff8801cd756040 [ 25.577868] R13: ffff8801d1642cad R14: 0000000000000000 R15: ffff8801cd756240 [ 25.585111] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009dbd900 [ 25.593303] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 25.599155] CR2: 0000000008138024 CR3: 00000001cd04f002 CR4: 00000000001606f0 [ 25.606401] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.613638] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.620876] Call Trace: [ 25.623435] ? find_held_lock+0x35/0x1d0 [ 25.627472] ? rdma_resolve_route+0x2010/0x2010 [ 25.632112] ? __radix_tree_replace+0x1af/0x310 [ 25.636753] ? node_tag_clear+0xf2/0x180 [ 25.640786] ? radix_tree_iter_tag_clear+0x97/0xd0 [ 25.645683] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 25.650493] ? wait_for_completion+0x770/0x770 [ 25.655051] ? idr_alloc+0x127/0x180 [ 25.658739] ucma_process_join+0x4da/0xa90 [ 25.662940] ? ucma_process_join+0x4da/0xa90 [ 25.667316] ? ucma_set_option+0x520/0x520 [ 25.671523] ? __might_sleep+0x95/0x190 [ 25.675469] ? kasan_check_write+0x14/0x20 [ 25.679673] ucma_join_ip_multicast+0x274/0x3b0 [ 25.684308] ? ucma_join_multicast+0x110/0x110 [ 25.688862] ? check_same_owner+0x320/0x320 [ 25.693154] ? ucma_put_ctx+0x26/0x30 [ 25.696924] ? __might_sleep+0x95/0x190 [ 25.700870] ? kasan_check_write+0x14/0x20 [ 25.705071] ucma_write+0x2d6/0x3d0 [ 25.708665] ? ucma_join_multicast+0x110/0x110 [ 25.713216] ? ucma_resolve_route+0x1a0/0x1a0 [ 25.717680] ? ucma_resolve_route+0x1a0/0x1a0 [ 25.722144] __vfs_write+0xef/0x970 [ 25.725740] ? rcu_note_context_switch+0x710/0x710 [ 25.730638] ? kernel_read+0x120/0x120 [ 25.734491] ? __might_sleep+0x95/0x190 [ 25.738432] ? _cond_resched+0x14/0x30 [ 25.742287] ? __inode_security_revalidate+0xd9/0x130 [ 25.747442] ? avc_policy_seqno+0x9/0x20 [ 25.751470] ? selinux_file_permission+0x82/0x460 [ 25.756282] ? security_file_permission+0x89/0x1e0 [ 25.761181] ? rw_verify_area+0xe5/0x2b0 [ 25.765298] ? __fdget_raw+0x20/0x20 [ 25.768979] vfs_write+0x189/0x510 [ 25.772487] SyS_write+0xef/0x220 [ 25.775910] ? __do_page_fault+0x3d6/0xc90 [ 25.780114] ? SyS_read+0x220/0x220 [ 25.783717] ? do_fast_syscall_32+0x156/0xf9f [ 25.788181] ? SyS_read+0x220/0x220 [ 25.791777] do_fast_syscall_32+0x3ec/0xf9f [ 25.796069] ? do_int80_syscall_32+0x9c0/0x9c0 [ 25.800617] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.805344] ? syscall_return_slowpath+0x2ac/0x550 [ 25.810242] ? prepare_exit_to_usermode+0x350/0x350 [ 25.815229] ? sysret32_from_system_call+0x5/0x3c [ 25.820041] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.824853] entry_SYSENTER_compat+0x70/0x7f [ 25.829227] RIP: 0023:0xf7f51c99 [ 25.832558] RSP: 002b:00000000ffc9155c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 25.840230] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200003c0 [ 25.847465] RDX: 0000000000000038 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.854709] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 25.861947] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.869186] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.876430] Code: 00 48 c1 ea 03 80 3c 02 00 0f 85 d7 34 00 00 49 8b 04 24 48 ba 00 00 00 00 00 fc ff df 48 8d b8 48 01 00 00 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 f5 35 00 00 49 c1 e6 04 4c 03 b0 48 01 00 00 [ 25.895506] RIP: rdma_join_multicast+0x46d/0x3bb0 RSP: ffff8801cd70f4a0 [ 25.902297] ---[ end trace db1d7e337677a795 ]--- [ 25.907034] Kernel panic - not syncing: Fatal exception [ 25.912728] Dumping ftrace buffer: [ 25.916236] (ftrace buffer empty) [ 25.919917] Kernel Offset: disabled [ 25.923513] Rebooting in 86400 seconds..