[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.656886] kauditd_printk_skb: 8 callbacks suppressed [ 29.656895] audit: type=1800 audit(1544126293.654:33): pid=5912 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 29.683780] audit: type=1800 audit(1544126293.664:34): pid=5912 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.819638] audit: type=1400 audit(1544126298.824:35): avc: denied { map } for pid=6089 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 [ 34.855028] sshd (6087) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.97' (ECDSA) to the list of known hosts. executing program [ 41.404688] audit: type=1400 audit(1544126305.404:36): avc: denied { map } for pid=6103 comm="syz-executor442" path="/root/syz-executor442105852" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 41.407374] WARNING: CPU: 1 PID: 6103 at mm/mempolicy.c:1745 alloc_pages_vma+0x1bd/0x4a0 [ 41.439376] Kernel panic - not syncing: panic_on_warn set ... [ 41.445338] CPU: 1 PID: 6103 Comm: syz-executor442 Not tainted 4.20.0-rc5+ #144 [ 41.452761] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.462089] Call Trace: [ 41.464706] dump_stack+0x244/0x39d [ 41.468327] ? dump_stack_print_info.cold.1+0x20/0x20 [ 41.473508] panic+0x2ad/0x55c [ 41.476679] ? add_taint.cold.5+0x16/0x16 [ 41.480814] ? __warn.cold.8+0x5/0x45 [ 41.484593] ? __warn+0xe8/0x1d0 [ 41.487937] ? alloc_pages_vma+0x1bd/0x4a0 [ 41.492260] __warn.cold.8+0x20/0x45 [ 41.495957] ? rcu_softirq_qs+0x20/0x20 [ 41.499913] ? alloc_pages_vma+0x1bd/0x4a0 [ 41.504240] report_bug+0x254/0x2d0 [ 41.507846] do_error_trap+0x11b/0x200 [ 41.511714] do_invalid_op+0x36/0x40 [ 41.515602] ? alloc_pages_vma+0x1bd/0x4a0 [ 41.519830] invalid_op+0x14/0x20 [ 41.523262] RIP: 0010:alloc_pages_vma+0x1bd/0x4a0 [ 41.528077] Code: 5f 5d c3 e8 35 2f bf ff 45 89 ec 31 ff 41 81 e4 00 00 04 00 44 89 e6 e8 31 30 bf ff 45 85 e4 0f 84 50 ff ff ff e8 13 2f bf ff <0f> 0b e9 44 ff ff ff e8 07 2f bf ff e8 22 5e ff ff 48 89 c3 e9 6b [ 41.546954] RSP: 0018:ffff8881b2f1f188 EFLAGS: 00010293 [ 41.552292] RAX: ffff8881bfdfa280 RBX: ffff8881da96f000 RCX: ffffffff81c06c9f [ 41.559540] RDX: 0000000000000000 RSI: ffffffff81c06cad RDI: 0000000000000005 [ 41.566786] RBP: ffff8881b2f1f1c8 R08: ffff8881bfdfa280 R09: ffffed103b5e5b5f [ 41.574031] R10: 0000000000000002 R11: ffff8881daf2dafb R12: 0000000000040000 [ 41.581274] R13: 00000000000742ca R14: ffff8881da96f008 R15: 0000000000000002 [ 41.588538] ? alloc_pages_vma+0x1af/0x4a0 [ 41.592753] ? alloc_pages_vma+0x1bd/0x4a0 [ 41.596964] ? alloc_pages_vma+0x1bd/0x4a0 [ 41.601180] do_huge_pmd_anonymous_page+0x59e/0x2030 [ 41.606265] ? __thp_get_unmapped_area+0x180/0x180 [ 41.611177] ? __lock_acquire+0x62f/0x4c20 [ 41.615390] ? print_usage_bug+0xc0/0xc0 [ 41.619427] ? print_usage_bug+0xc0/0xc0 [ 41.623479] ? print_usage_bug+0xc0/0xc0 [ 41.627515] ? __lock_acquire+0x62f/0x4c20 [ 41.631728] ? mark_held_locks+0x130/0x130 [ 41.635938] ? print_usage_bug+0xc0/0xc0 [ 41.639979] ? __lock_acquire+0x62f/0x4c20 [ 41.644194] ? __lock_acquire+0x62f/0x4c20 [ 41.648413] ? mark_held_locks+0x130/0x130 [ 41.652639] ? mark_held_locks+0x130/0x130 [ 41.656854] ? mark_held_locks+0x130/0x130 [ 41.661065] ? __lock_acquire+0x62f/0x4c20 [ 41.665279] __handle_mm_fault+0x3c91/0x5be0 [ 41.669671] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 41.674503] ? print_usage_bug+0xc0/0xc0 [ 41.678540] ? __lock_acquire+0x62f/0x4c20 [ 41.682747] ? zap_class+0x640/0x640 [ 41.686436] ? is_bpf_text_address+0xac/0x170 [ 41.691123] ? zap_class+0x640/0x640 [ 41.694818] ? zap_class+0x640/0x640 [ 41.698517] ? find_held_lock+0x36/0x1c0 [ 41.702605] ? handle_mm_fault+0x42a/0xc70 [ 41.706820] ? lock_downgrade+0x900/0x900 [ 41.710952] ? check_preemption_disabled+0x48/0x280 [ 41.715954] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 41.720865] ? kasan_check_read+0x11/0x20 [ 41.724991] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 41.730243] ? rcu_softirq_qs+0x20/0x20 [ 41.734197] ? trace_hardirqs_off_caller+0x310/0x310 [ 41.739281] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 41.744803] ? check_preemption_disabled+0x48/0x280 [ 41.749801] handle_mm_fault+0x54f/0xc70 [ 41.753839] ? __handle_mm_fault+0x5be0/0x5be0 [ 41.758399] ? find_vma+0x34/0x190 [ 41.761917] __do_page_fault+0x5e8/0xe60 [ 41.765957] do_page_fault+0xf2/0x7e0 [ 41.769738] ? vmalloc_sync_all+0x30/0x30 [ 41.773864] ? error_entry+0x76/0xd0 [ 41.777551] ? trace_hardirqs_off_caller+0xbb/0x310 [ 41.782540] ? find_held_lock+0x36/0x1c0 [ 41.786576] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.791398] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.796395] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.801216] page_fault+0x1e/0x30 [ 41.804647] RIP: 0010:__clear_user+0x3b/0x70 [ 41.809238] Code: f9 be 13 00 00 00 48 c7 c7 a0 47 d8 88 e8 ad 28 d8 f9 0f 1f 00 48 89 d8 48 c1 eb 03 4c 89 e7 83 e0 07 48 89 d9 48 85 c9 74 0f <48> c7 07 00 00 00 00 48 83 c7 08 ff c9 75 f1 48 89 c1 85 c9 74 0a [ 41.828214] RSP: 0018:ffff8881b2f1fbc8 EFLAGS: 00010206 [ 41.833556] RAX: 0000000000000000 RBX: 000000000000000f RCX: 000000000000000f [ 41.840823] RDX: 0000000000000000 RSI: ffffffff81b1b3d3 RDI: 00000000203e8008 [ 41.848071] RBP: ffff8881b2f1fbd8 R08: 1ffff110365e3f55 R09: 0000000000000008 [ 41.855343] R10: 0000000000000001 R11: ffff8881bfdfa280 R12: 00000000203e8008 [ 41.862592] R13: 00000000203e8008 R14: 00007ffffffff000 R15: 0000000000000000 [ 41.869856] ? __might_fault+0x1a3/0x1e0 [ 41.873898] ? __clear_user+0x23/0x70 [ 41.877707] clear_user+0xb1/0xe0 [ 41.881144] kernel_get_mempolicy+0x292/0x1100 [ 41.885711] ? sp_free+0x60/0x60 [ 41.889059] ? __mpol_equal+0x370/0x370 [ 41.893016] ? up_read+0x225/0x2c0 [ 41.896532] ? up_read_non_owner+0x100/0x100 [ 41.900921] ? do_syscall_64+0x9a/0x820 [ 41.904875] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 41.909439] ? trace_hardirqs_on+0xbd/0x310 [ 41.913744] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.919087] ? trace_hardirqs_off_caller+0x310/0x310 [ 41.924167] __x64_sys_get_mempolicy+0xbe/0x150 [ 41.928819] do_syscall_64+0x1b9/0x820 [ 41.932683] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.938033] ? syscall_return_slowpath+0x5e0/0x5e0 [ 41.942944] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.947769] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.952785] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 41.957799] ? prepare_exit_to_usermode+0x291/0x3b0 [ 41.962799] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.967625] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.972798] RIP: 0033:0x440009 [ 41.975982] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 41.994864] RSP: 002b:00007ffc55a6cf58 EFLAGS: 00000217 ORIG_RAX: 00000000000000ef [ 42.002551] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 42.009804] RDX: 0000000000000401 RSI: 00000000203e8000 RDI: 0000000000000000 [ 42.017052] RBP: 00000000006ca018 R08: 0000000000000002 R09: 0000000000000000 [ 42.024296] R10: 0000000020336000 R11: 0000000000000217 R12: 0000000000401890 [ 42.031546] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 42.040021] Kernel Offset: disabled [ 42.043714] Rebooting in 86400 seconds..