[....] Starting enhanced syslogd: rsyslogd[ 12.223317] audit: type=1400 audit(1514726892.052:5): avc: denied { syslog } for pid=3338 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 18.739838] audit: type=1400 audit(1514726898.568:6): avc: denied { map } for pid=3477 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 '10.128.15.230' (ECDSA) to the list of known hosts. [ 40.519408] audit: type=1400 audit(1514726920.348:7): avc: denied { map } for pid=3494 comm="syzkaller220587" path="/root/syzkaller220587096" 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 [ 40.520774] WARNING: CPU: 0 PID: 3494 at mm/page_alloc.c:3926 __alloc_pages_slowpath+0x1ffc/0x2d00 [ 40.520782] Kernel panic - not syncing: panic_on_warn set ... [ 40.520782] [ 40.520787] CPU: 0 PID: 3494 Comm: syzkaller220587 Not tainted 4.15.0-rc5+ #154 [ 40.520789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.520791] Call Trace: [ 40.520799] dump_stack+0x194/0x257 [ 40.520807] ? arch_local_irq_restore+0x53/0x53 [ 40.520818] ? vsnprintf+0x1ed/0x1900 [ 40.520828] panic+0x1e4/0x41c [ 40.520838] ? refcount_error_report+0x214/0x214 [ 40.520845] ? show_regs_print_info+0x18/0x18 [ 40.520856] ? __warn+0x1c1/0x200 [ 40.520864] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 40.520868] __warn+0x1dc/0x200 [ 40.520873] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 40.520880] report_bug+0x211/0x2d0 [ 40.520893] fixup_bug.part.11+0x37/0x80 [ 40.520899] do_error_trap+0x2d7/0x3e0 [ 40.520908] ? math_error+0x400/0x400 [ 40.520917] ? print_irqtrace_events+0x270/0x270 [ 40.520930] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.520940] do_invalid_op+0x1b/0x20 [ 40.520946] invalid_op+0x22/0x40 [ 40.520951] RIP: 0010:__alloc_pages_slowpath+0x1ffc/0x2d00 [ 40.520953] RSP: 0018:ffff8801cacb73e0 EFLAGS: 00010246 [ 40.520958] RAX: ffffed0039596e9d RBX: 1ffff10039596e9d RCX: 0000000000000000 [ 40.520960] RDX: ffff8801cacb7a38 RSI: 0000000000000034 RDI: 0000000000000000 [ 40.520963] RBP: ffff8801cacb78d0 R08: 0000000000000000 R09: fffffffffff00f8a [ 40.520965] R10: 0000000000000033 R11: 0000000000000034 R12: 0000000000000000 [ 40.520968] R13: ffff8801cacb7a98 R14: 00000000014280c2 R15: ffff8801cacb7a38 [ 40.520988] ? __lock_acquire+0x664/0x3e00 [ 40.520998] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.521004] ? check_noncircular+0x19/0x20 [ 40.521017] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.521024] ? check_noncircular+0x20/0x20 [ 40.521031] ? warn_alloc+0x2b0/0x2b0 [ 40.521043] ? __is_insn_slot_addr+0x1fc/0x330 [ 40.521049] ? lock_downgrade+0x980/0x980 [ 40.521060] ? find_held_lock+0x35/0x1d0 [ 40.521075] ? is_bpf_text_address+0x7b/0x120 [ 40.521080] ? check_noncircular+0x20/0x20 [ 40.521089] ? check_noncircular+0x20/0x20 [ 40.521094] ? __free_insn_slot+0x5c0/0x5c0 [ 40.521106] ? rcutorture_record_progress+0x10/0x10 [ 40.521117] ? find_held_lock+0x35/0x1d0 [ 40.521126] ? __lock_is_held+0xb6/0x140 [ 40.521144] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.521152] ? rcu_note_context_switch+0x710/0x710 [ 40.521161] ? __might_sleep+0x95/0x190 [ 40.521170] __alloc_pages_nodemask+0x9fb/0xd80 [ 40.521176] ? save_stack+0x43/0xd0 [ 40.521179] ? kasan_slab_free+0x71/0xc0 [ 40.521187] ? __alloc_pages_slowpath+0x2d00/0x2d00 [ 40.521191] ? check_noncircular+0x20/0x20 [ 40.521197] ? print_irqtrace_events+0x270/0x270 [ 40.521221] ? __lock_is_held+0xb6/0x140 [ 40.521239] alloc_pages_current+0xb6/0x1e0 [ 40.521250] ion_system_contig_heap_allocate+0x40/0x2c0 [ 40.521259] ion_alloc+0x2c1/0x9e0 [ 40.521272] ? ion_dma_buf_release+0x50/0x50 [ 40.521281] ? __might_sleep+0x95/0x190 [ 40.521292] ? kasan_check_write+0x14/0x20 [ 40.521299] ? _copy_from_user+0x99/0x110 [ 40.521306] ion_ioctl+0x26d/0x380 [ 40.521313] ? ion_query_heaps+0x490/0x490 [ 40.521322] ? security_file_ioctl+0x7d/0xb0 [ 40.521327] ? security_file_ioctl+0x89/0xb0 [ 40.521337] compat_SyS_ioctl+0x151/0x2a30 [ 40.521343] ? do_fast_syscall_32+0x156/0xf9d [ 40.521347] ? ion_query_heaps+0x490/0x490 [ 40.521353] ? do_ioctl+0x60/0x60 [ 40.521359] do_fast_syscall_32+0x3ee/0xf9d [ 40.521370] ? do_int80_syscall_32+0x9d0/0x9d0 [ 40.521375] ? kasan_check_read+0x11/0x20 [ 40.521382] ? syscall_return_slowpath+0x550/0x550 [ 40.521389] ? SyS_rt_sigaction+0x94/0x1b0 [ 40.521395] ? SyS_sigprocmask+0x4b0/0x4b0 [ 40.521399] ? SyS_read+0x184/0x220 [ 40.521405] ? retint_user+0x18/0x18 [ 40.521414] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.521426] entry_SYSENTER_compat+0x54/0x63 [ 40.521430] RIP: 0023:0xf7f7fc79 [ 40.521432] RSP: 002b:00000000ffdf737c EFLAGS: 00000282 ORIG_RAX: 0000000000000036 [ 40.521436] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c0184900 [ 40.521438] RDX: 0000000020000fe9 RSI: 00000000080ea00c RDI: 000000000000003f [ 40.521441] RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000 [ 40.521443] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.521445] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.545301] Dumping ftrace buffer: [ 40.545401] (ftrace buffer empty) [ 40.545403] Kernel Offset: disabled [ 40.978661] Rebooting in 86400 seconds..