[....] Starting enhanced syslogd: rsyslogd[ 12.711717] audit: type=1400 audit(1513773506.058:5): avc: denied { syslog } for pid=2991 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.782857] audit: type=1400 audit(1513773513.129:6): avc: denied { map } for pid=3132 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-mmots-kasan-gce-5,10.128.15.203' (ECDSA) to the list of known hosts. executing program [ 26.092817] audit: type=1400 audit(1513773519.439:7): avc: denied { map } for pid=3146 comm="syzkaller093112" path="/root/syzkaller093112579" 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 [ 26.097772] WARNING: CPU: 1 PID: 3146 at mm/slab_common.c:1010 kmalloc_slab+0x5d/0x70 [ 26.097789] Kernel panic - not syncing: panic_on_warn set ... [ 26.097789] [ 26.097799] CPU: 1 PID: 3146 Comm: syzkaller093112 Not tainted 4.15.0-rc2-mm1+ #39 [ 26.097805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.097810] Call Trace: [ 26.097826] dump_stack+0x194/0x257 [ 26.097842] ? arch_local_irq_restore+0x53/0x53 [ 26.097861] ? vsnprintf+0x1ed/0x1900 [ 26.097884] panic+0x1e4/0x41c [ 26.097895] ? refcount_error_report+0x214/0x214 [ 26.097905] ? show_regs_print_info+0x18/0x18 [ 26.097921] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 26.097936] ? __warn+0x1c1/0x200 [ 26.097951] ? kmalloc_slab+0x5d/0x70 [ 26.097960] __warn+0x1dc/0x200 [ 26.097970] ? kmalloc_slab+0x5d/0x70 [ 26.097984] report_bug+0x211/0x2d0 [ 26.098008] fixup_bug.part.11+0x37/0x80 [ 26.098020] do_error_trap+0x2d7/0x3e0 [ 26.098029] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 26.098040] ? find_held_lock+0x39/0x1d0 [ 26.098054] ? math_error+0x400/0x400 [ 26.098065] ? check_noncircular+0x20/0x20 [ 26.098077] ? print_usage_bug+0x3f0/0x3f0 [ 26.098101] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.098121] do_invalid_op+0x1b/0x20 [ 26.098130] invalid_op+0x22/0x40 [ 26.098139] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 26.098145] RSP: 0018:ffff8801c5657678 EFLAGS: 00010246 [ 26.098156] RAX: 0000000000000000 RBX: ffff8801c5487a80 RCX: ffffffff8171f597 [ 26.098162] RDX: 1ffff10038b056aa RSI: 0000000000000000 RDI: 0000000008001000 [ 26.098168] RBP: ffff8801c5657678 R08: 1ffff10038acae46 R09: 0000000000000000 [ 26.098174] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c582b550 [ 26.098180] R13: 0000000000000000 R14: 00000000014000c0 R15: ffffffff85feeae0 [ 26.098206] ? relay_open_buf.part.10+0x97/0x9b0 [ 26.098224] ? rcu_read_lock_sched_held+0x108/0x120 [ 26.098236] __kmalloc+0x25/0x760 [ 26.098244] ? kmem_cache_alloc_trace+0x459/0x750 [ 26.098262] ? relay_open_buf.part.10+0xc8/0x9b0 [ 26.098280] relay_open_buf.part.10+0xc8/0x9b0 [ 26.098307] relay_open+0x57a/0xa40 [ 26.098326] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 26.098342] ? __debugfs_create_file+0x2cf/0x3d0 [ 26.098362] ? debugfs_create_file+0x57/0x70 [ 26.098380] do_blk_trace_setup+0x4a4/0xcd0 [ 26.098398] ? blk_tracer_print_line+0x40/0x40 [ 26.098410] ? __might_sleep+0x95/0x190 [ 26.098431] ? kasan_check_write+0x14/0x20 [ 26.098441] ? _copy_from_user+0x99/0x110 [ 26.098457] __blk_trace_setup+0xb6/0x140 [ 26.098469] ? do_blk_trace_setup+0xcd0/0xcd0 [ 26.098491] ? disk_name+0x98/0x100 [ 26.098514] blk_trace_ioctl+0x1d5/0x2a0 [ 26.098526] ? blk_add_trace_rq_remap+0x680/0x680 [ 26.098545] ? avc_has_extended_perms+0x7fa/0x12c0 [ 26.098562] blkdev_ioctl+0x1845/0x1e00 [ 26.098574] ? blkpg_ioctl+0xb20/0xb20 [ 26.098585] ? avc_ss_reset+0x110/0x110 [ 26.098604] ? lock_downgrade+0x980/0x980 [ 26.098639] ? down_read_trylock+0xdb/0x170 [ 26.098666] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 26.098674] ? up_read+0x1a/0x40 [ 26.098689] ? rcu_note_context_switch+0x710/0x710 [ 26.098707] block_ioctl+0xea/0x130 [ 26.098720] ? blkdev_fallocate+0x3b0/0x3b0 [ 26.098731] do_vfs_ioctl+0x1b1/0x1530 [ 26.098739] ? _cond_resched+0x14/0x30 [ 26.098757] ? ioctl_preallocate+0x2b0/0x2b0 [ 26.098772] ? selinux_capable+0x40/0x40 [ 26.098787] ? putname+0xf3/0x130 [ 26.098805] ? do_sys_open+0x320/0x6d0 [ 26.098829] ? security_file_ioctl+0x89/0xb0 [ 26.098846] SyS_ioctl+0x8f/0xc0 [ 26.098864] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 26.098871] RIP: 0033:0x443e39 [ 26.098877] RSP: 002b:00007ffc0c948dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 26.098892] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e39 [ 26.098898] RDX: 0000000020ed6000 RSI: 00000000c0481273 RDI: 0000000000000003 [ 26.098904] RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 [ 26.098910] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000401b20 [ 26.098916] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 26.119154] Dumping ftrace buffer: [ 26.119256] (ftrace buffer empty) [ 26.119261] Kernel Offset: disabled [ 26.515068] Rebooting in 86400 seconds..