[....] Starting enhanced syslogd: rsyslogd[ 16.433363] audit: type=1400 audit(1520367358.372:5): avc: denied { syslog } for pid=3997 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: [ 22.342750] audit: type=1400 audit(1520367364.281:6): avc: denied { map } for pid=4138 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 '10.128.10.7' (ECDSA) to the list of known hosts. executing program [ 28.667153] audit: type=1400 audit(1520367370.605:7): avc: denied { map } for pid=4152 comm="syzkaller100190" path="/root/syzkaller100190328" 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 [ 28.693601] WARNING: CPU: 0 PID: 4152 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70 [ 28.701562] Kernel panic - not syncing: panic_on_warn set ... [ 28.701562] [ 28.708894] CPU: 0 PID: 4152 Comm: syzkaller100190 Not tainted 4.16.0-rc4+ #343 [ 28.716309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.725633] Call Trace: [ 28.728193] dump_stack+0x194/0x24d [ 28.731791] ? arch_local_irq_restore+0x53/0x53 [ 28.736434] ? vsnprintf+0x1ed/0x1900 [ 28.740210] panic+0x1e4/0x41c [ 28.743376] ? refcount_error_report+0x214/0x214 [ 28.748100] ? show_regs_print_info+0x18/0x18 [ 28.752572] ? __warn+0x1c1/0x200 [ 28.755997] ? kmalloc_slab+0x5d/0x70 [ 28.759767] __warn+0x1dc/0x200 [ 28.763017] ? kmalloc_slab+0x5d/0x70 [ 28.766790] report_bug+0x211/0x2d0 [ 28.770395] fixup_bug.part.11+0x37/0x80 [ 28.774430] do_error_trap+0x2d7/0x3e0 [ 28.778285] ? proc_do_uuid+0x270/0x270 [ 28.782320] ? math_error+0x400/0x400 [ 28.786098] ? __radix_tree_lookup+0x435/0x5e0 [ 28.790659] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.795476] do_invalid_op+0x1b/0x20 [ 28.799162] invalid_op+0x1b/0x40 [ 28.802592] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 28.806970] RSP: 0018:ffff8801bf76f970 EFLAGS: 00010246 [ 28.812308] RAX: 0000000000000000 RBX: fffffffffffffff4 RCX: ffffffff819733cb [ 28.819546] RDX: ffffffff8423372f RSI: 0000000000000000 RDI: 000000003efef4b4 [ 28.826786] RBP: ffff8801bf76f970 R08: 0000000000000000 R09: 0000000000000000 [ 28.834027] R10: ffffffff88613380 R11: 0000000000000000 R12: 000000003efef4b4 [ 28.841268] R13: 0000000020000080 R14: 00000000014200c0 R15: ffff8801bf76fa68 [ 28.848518] ? memdup_user+0x1b/0x90 [ 28.852200] ? ucma_set_option+0x11f/0x4d0 [ 28.856416] __kmalloc_track_caller+0x21/0x760 [ 28.860972] ? ucma_set_option+0x11f/0x4d0 [ 28.865279] memdup_user+0x2c/0x90 [ 28.868788] ucma_set_option+0x11f/0x4d0 [ 28.872820] ? __might_sleep+0x95/0x190 [ 28.876766] ? ucma_set_ib_path.isra.14+0x850/0x850 [ 28.881751] ? kasan_check_write+0x14/0x20 [ 28.885954] ? _copy_from_user+0x99/0x110 [ 28.890075] ucma_write+0x2d6/0x3d0 [ 28.893668] ? ucma_set_ib_path.isra.14+0x850/0x850 [ 28.898653] ? ucma_resolve_route+0x1a0/0x1a0 [ 28.903125] ? ucma_resolve_route+0x1a0/0x1a0 [ 28.907589] __vfs_write+0xef/0x970 [ 28.911191] ? rcu_note_context_switch+0x710/0x710 [ 28.916089] ? kernel_read+0x120/0x120 [ 28.919945] ? __might_sleep+0x95/0x190 [ 28.923892] ? _cond_resched+0x14/0x30 [ 28.927749] ? __inode_security_revalidate+0xd9/0x130 [ 28.932906] ? avc_policy_seqno+0x9/0x20 [ 28.936935] ? selinux_file_permission+0x82/0x460 [ 28.941750] ? security_file_permission+0x89/0x1e0 [ 28.946650] ? rw_verify_area+0xe5/0x2b0 [ 28.950677] ? __fdget_raw+0x20/0x20 [ 28.954361] vfs_write+0x189/0x510 [ 28.957877] SyS_write+0xef/0x220 [ 28.961296] ? filp_open+0x70/0x70 [ 28.964809] ? SyS_read+0x220/0x220 [ 28.968408] ? do_syscall_64+0xb7/0x940 [ 28.972352] ? SyS_read+0x220/0x220 [ 28.975949] do_syscall_64+0x281/0x940 [ 28.979807] ? __do_page_fault+0xc90/0xc90 [ 28.984013] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.988737] ? syscall_return_slowpath+0x550/0x550 [ 28.993637] ? syscall_return_slowpath+0x2ac/0x550 [ 28.998535] ? prepare_exit_to_usermode+0x350/0x350 [ 29.003521] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.008858] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.013680] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.018836] RIP: 0033:0x43fe69 [ 29.021995] RSP: 002b:00007ffe099a6388 EFLAGS: 00000217 ORIG_RAX: 0000000000000001 [ 29.029671] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fe69 [ 29.036908] RDX: 000000000000006b RSI: 00000000200000c0 RDI: 0000000000000003 [ 29.044147] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.051388] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401790 [ 29.058629] R13: 0000000000401820 R14: 0000000000000000 R15: 0000000000000000 [ 29.066359] Dumping ftrace buffer: [ 29.069936] (ftrace buffer empty) [ 29.073616] Kernel Offset: disabled [ 29.077216] Rebooting in 86400 seconds..