[....] Starting enhanced syslogd: rsyslogd[ 10.155353] audit: type=1400 audit(1513705135.014:5): avc: denied { syslog } for pid=2983 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: [ 12.620743] audit: type=1400 audit(1513705137.479:6): avc: denied { map } for pid=3122 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 'ci-upstream-kasan-gce-6,10.128.0.4' (ECDSA) to the list of known hosts. executing program [ 18.805775] audit: type=1400 audit(1513705143.664:7): avc: denied { map } for pid=3136 comm="syzkaller011385" path="/root/syzkaller011385150" 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 [ 18.808921] WARNING: CPU: 1 PID: 3136 at mm/slab_common.c:971 kmalloc_slab+0x5d/0x70 [ 18.808934] Kernel panic - not syncing: panic_on_warn set ... [ 18.808934] [ 18.808941] CPU: 1 PID: 3136 Comm: syzkaller011385 Not tainted 4.15.0-rc4+ #228 [ 18.808945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.808948] Call Trace: [ 18.808959] dump_stack+0x194/0x257 [ 18.808973] ? arch_local_irq_restore+0x53/0x53 [ 18.808988] ? vsnprintf+0x1ed/0x1900 [ 18.809006] panic+0x1e4/0x41c [ 18.809014] ? refcount_error_report+0x214/0x214 [ 18.809022] ? show_regs_print_info+0x18/0x18 [ 18.809041] ? __warn+0x1c1/0x200 [ 18.809058] ? kmalloc_slab+0x5d/0x70 [ 18.809064] __warn+0x1dc/0x200 [ 18.809072] ? kmalloc_slab+0x5d/0x70 [ 18.809084] report_bug+0x211/0x2d0 [ 18.809102] fixup_bug.part.11+0x37/0x80 [ 18.809112] do_error_trap+0x2d7/0x3e0 [ 18.809119] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 18.809132] ? math_error+0x400/0x400 [ 18.809143] ? check_noncircular+0x20/0x20 [ 18.809153] ? print_irqtrace_events+0x270/0x270 [ 18.809172] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 18.809189] do_invalid_op+0x1b/0x20 [ 18.809196] invalid_op+0x22/0x40 [ 18.809202] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 18.809206] RSP: 0018:ffff8801bd767678 EFLAGS: 00010246 [ 18.809212] RAX: 0000000000000000 RBX: ffff8801cab3bcc0 RCX: ffffffff817191d7 [ 18.809216] RDX: 1ffff10039e36d0a RSI: 0000000000000000 RDI: 0000000008001000 [ 18.809221] RBP: ffff8801bd767678 R08: 1ffff10037aece43 R09: 0000000000000000 [ 18.809224] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801cf1b6850 [ 18.809228] R13: 0000000000000000 R14: 00000000014000c0 R15: ffffffff85be5ae0 [ 18.809250] ? relay_open_buf.part.10+0x97/0x9b0 [ 18.809267] ? rcu_read_lock_sched_held+0x108/0x120 [ 18.809275] __kmalloc+0x25/0x760 [ 18.809282] ? kmem_cache_alloc_trace+0x456/0x750 [ 18.809296] ? relay_open_buf.part.10+0xc8/0x9b0 [ 18.809312] relay_open_buf.part.10+0xc8/0x9b0 [ 18.809327] ? find_next_bit+0x27/0x30 [ 18.809342] relay_open+0x57a/0xa40 [ 18.809358] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 18.809371] ? __debugfs_create_file+0x2cf/0x3d0 [ 18.809388] ? debugfs_create_file+0x57/0x70 [ 18.809403] do_blk_trace_setup+0x4a4/0xcd0 [ 18.809419] ? blk_tracer_print_line+0x40/0x40 [ 18.809429] ? __might_sleep+0x95/0x190 [ 18.809447] ? kasan_check_write+0x14/0x20 [ 18.809454] ? _copy_from_user+0x99/0x110 [ 18.809467] __blk_trace_setup+0xb6/0x140 [ 18.809477] ? do_blk_trace_setup+0xcd0/0xcd0 [ 18.809496] ? disk_name+0x98/0x100 [ 18.809516] blk_trace_ioctl+0x1d5/0x2a0 [ 18.809526] ? blk_add_trace_rq_remap+0x680/0x680 [ 18.809542] ? avc_has_extended_perms+0x7fa/0x12c0 [ 18.809555] blkdev_ioctl+0x1845/0x1e00 [ 18.809566] ? blkpg_ioctl+0xb20/0xb20 [ 18.809574] ? avc_ss_reset+0x110/0x110 [ 18.809596] ? __do_page_fault+0x5f7/0xc90 [ 18.809633] ? vmacache_update+0xfe/0x130 [ 18.809648] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.809654] ? up_read+0x1a/0x40 [ 18.809664] ? rcu_note_context_switch+0x710/0x710 [ 18.809677] block_ioctl+0xde/0x120 [ 18.809688] ? blkdev_fallocate+0x3b0/0x3b0 [ 18.809695] do_vfs_ioctl+0x1b1/0x1520 [ 18.809701] ? _cond_resched+0x14/0x30 [ 18.809717] ? ioctl_preallocate+0x2b0/0x2b0 [ 18.809729] ? selinux_capable+0x40/0x40 [ 18.809741] ? putname+0xf3/0x130 [ 18.809753] ? do_sys_open+0x320/0x6d0 [ 18.809775] ? security_file_ioctl+0x89/0xb0 [ 18.809789] SyS_ioctl+0x8f/0xc0 [ 18.809804] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 18.809809] RIP: 0033:0x443e39 [ 18.809812] RSP: 002b:00007ffff473c758 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 18.809819] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e39 [ 18.809823] RDX: 0000000020ed6000 RSI: 00000000c0481273 RDI: 0000000000000003 [ 18.809827] RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 [ 18.809830] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000401b20 [ 18.809834] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 18.832073] Dumping ftrace buffer: [ 18.832121] (ftrace buffer empty) [ 18.832123] Kernel Offset: disabled [ 19.222438] Rebooting in 86400 seconds..