[....] Starting enhanced syslogd: rsyslogd[ 12.139715] audit: type=1400 audit(1514741900.432:5): avc: denied { syslog } for pid=3351 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: [ 18.960533] audit: type=1400 audit(1514741907.253:6): avc: denied { map } for pid=3490 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 '10.128.0.15' (ECDSA) to the list of known hosts. [ 25.176846] audit: type=1400 audit(1514741913.469:7): avc: denied { map } for pid=3504 comm="syzkaller210084" path="/root/syzkaller210084610" 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 [ 25.178729] WARNING: CPU: 0 PID: 3504 at mm/page_alloc.c:3926 __alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.178740] Kernel panic - not syncing: panic_on_warn set ... [ 25.178740] [ 25.178747] CPU: 0 PID: 3504 Comm: syzkaller210084 Not tainted 4.15.0-rc5+ #244 [ 25.178751] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.178754] Call Trace: [ 25.178765] dump_stack+0x194/0x257 [ 25.178778] ? arch_local_irq_restore+0x53/0x53 [ 25.178793] ? vsnprintf+0x1ed/0x1900 [ 25.178808] panic+0x1e4/0x41c [ 25.178816] ? refcount_error_report+0x214/0x214 [ 25.178824] ? show_regs_print_info+0x18/0x18 [ 25.178842] ? __warn+0x1c1/0x200 [ 25.178856] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.178862] __warn+0x1dc/0x200 [ 25.178870] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.178881] report_bug+0x211/0x2d0 [ 25.178899] fixup_bug.part.11+0x37/0x80 [ 25.178909] do_error_trap+0x2d7/0x3e0 [ 25.178924] ? math_error+0x400/0x400 [ 25.178937] ? __lock_acquire+0x664/0x3e00 [ 25.178957] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.178972] do_invalid_op+0x1b/0x20 [ 25.178981] invalid_op+0x22/0x40 [ 25.178987] RIP: 0010:__alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.178991] RSP: 0018:ffff8801bf31f418 EFLAGS: 00010246 [ 25.178998] RAX: ffffed0037e63ea4 RBX: 1ffff10037e63ea4 RCX: 0000000000000000 [ 25.179005] RDX: ffff8801bf31fa70 RSI: 0000000000000034 RDI: 0000000000000000 [ 25.179009] RBP: ffff8801bf31f908 R08: 0000000000000000 R09: fffffffffff00f8a [ 25.179013] R10: 0000000000000033 R11: 0000000000000034 R12: 0000000000000000 [ 25.179017] R13: ffff8801bf31fad0 R14: 00000000014280c2 R15: ffff8801bf31fa70 [ 25.179051] ? __lock_acquire+0x664/0x3e00 [ 25.179064] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.179070] ? check_noncircular+0x19/0x20 [ 25.179077] ? __lock_acquire+0x2dcd/0x3e00 [ 25.179098] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.179107] ? check_noncircular+0x20/0x20 [ 25.179119] ? warn_alloc+0x2b0/0x2b0 [ 25.179136] ? __is_insn_slot_addr+0x1fc/0x330 [ 25.179146] ? lock_downgrade+0x980/0x980 [ 25.179164] ? find_held_lock+0x35/0x1d0 [ 25.179189] ? is_bpf_text_address+0x7b/0x120 [ 25.179199] ? check_noncircular+0x20/0x20 [ 25.179213] ? check_noncircular+0x20/0x20 [ 25.179221] ? __free_insn_slot+0x5c0/0x5c0 [ 25.179239] ? rcutorture_record_progress+0x10/0x10 [ 25.179256] ? find_held_lock+0x35/0x1d0 [ 25.179270] ? __lock_is_held+0xb6/0x140 [ 25.179299] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.179312] ? rcu_note_context_switch+0x710/0x710 [ 25.179326] ? __might_sleep+0x95/0x190 [ 25.179341] __alloc_pages_nodemask+0x9fb/0xd80 [ 25.179349] ? save_stack+0x43/0xd0 [ 25.179354] ? kasan_slab_free+0x71/0xc0 [ 25.179368] ? __alloc_pages_slowpath+0x2d00/0x2d00 [ 25.179373] ? check_noncircular+0x20/0x20 [ 25.179383] ? print_irqtrace_events+0x270/0x270 [ 25.179421] ? __lock_is_held+0xb6/0x140 [ 25.179450] alloc_pages_current+0xb6/0x1e0 [ 25.179466] ion_system_contig_heap_allocate+0x40/0x2c0 [ 25.179481] ion_alloc+0x2c1/0x9e0 [ 25.179502] ? ion_dma_buf_release+0x50/0x50 [ 25.179516] ? __might_sleep+0x95/0x190 [ 25.179533] ? kasan_check_write+0x14/0x20 [ 25.179542] ? _copy_from_user+0x99/0x110 [ 25.179554] ion_ioctl+0x26d/0x380 [ 25.179565] ? ion_query_heaps+0x490/0x490 [ 25.179586] ? ion_query_heaps+0x490/0x490 [ 25.179593] do_vfs_ioctl+0x1b1/0x1520 [ 25.179599] ? _cond_resched+0x14/0x30 [ 25.179614] ? ioctl_preallocate+0x2b0/0x2b0 [ 25.179627] ? selinux_capable+0x40/0x40 [ 25.179638] ? putname+0xf3/0x130 [ 25.179669] ? security_file_ioctl+0x89/0xb0 [ 25.179682] SyS_ioctl+0x8f/0xc0 [ 25.179697] entry_SYSCALL_64_fastpath+0x23/0x9a [ 25.179702] RIP: 0033:0x43fcc9 [ 25.179706] RSP: 002b:00007ffe9dc86498 EFLAGS: 00000203 ORIG_RAX: 0000000000000010 [ 25.179713] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcc9 [ 25.179717] RDX: 0000000020000fe9 RSI: 00000000c0184900 RDI: 0000000000000003 [ 25.179720] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 25.179724] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401630 [ 25.179728] R13: 00000000004016c0 R14: 0000000000000000 R15: 0000000000000000 [ 25.203167] Dumping ftrace buffer: [ 25.203261] (ftrace buffer empty) [ 25.203264] Kernel Offset: disabled [ 25.608649] Rebooting in 86400 seconds..