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. [ 34.398703] audit: type=1800 audit(1544124534.785:33): pid=6045 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 [ 34.427268] audit: type=1800 audit(1544124534.785:34): pid=6045 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: [ 37.170876] audit: type=1400 audit(1544124537.555:35): avc: denied { map } for pid=6221 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 '10.128.0.41' (ECDSA) to the list of known hosts. executing program [ 43.821574] audit: type=1400 audit(1544124544.205:36): avc: denied { map } for pid=6235 comm="syz-executor654" path="/root/syz-executor654104129" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 43.841074] IPVS: ftp: loaded support on port[0] = 21 [ 43.878721] WARNING: CPU: 1 PID: 6237 at mm/mempolicy.c:1745 alloc_pages_vma+0x1bd/0x4a0 [ 43.887154] Kernel panic - not syncing: panic_on_warn set ... [ 43.893025] CPU: 1 PID: 6237 Comm: syz-executor654 Not tainted 4.20.0-rc5+ #144 [ 43.900448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.909781] Call Trace: [ 43.912370] dump_stack+0x244/0x39d [ 43.915989] ? dump_stack_print_info.cold.1+0x20/0x20 [ 43.921169] panic+0x2ad/0x55c [ 43.924349] ? add_taint.cold.5+0x16/0x16 [ 43.928484] ? __warn.cold.8+0x5/0x45 [ 43.932267] ? __warn+0xe8/0x1d0 [ 43.935619] ? alloc_pages_vma+0x1bd/0x4a0 [ 43.939836] __warn.cold.8+0x20/0x45 [ 43.943532] ? rcu_softirq_qs+0x20/0x20 [ 43.947488] ? alloc_pages_vma+0x1bd/0x4a0 [ 43.951730] report_bug+0x254/0x2d0 [ 43.955353] do_error_trap+0x11b/0x200 [ 43.959227] do_invalid_op+0x36/0x40 [ 43.962922] ? alloc_pages_vma+0x1bd/0x4a0 [ 43.967142] invalid_op+0x14/0x20 [ 43.970671] RIP: 0010:alloc_pages_vma+0x1bd/0x4a0 [ 43.975498] 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 [ 43.994381] RSP: 0000:ffff8881cd5a6918 EFLAGS: 00010293 [ 43.999726] RAX: ffff8881d14cc700 RBX: ffff8881da96f000 RCX: ffffffff81c06c9f [ 44.006977] RDX: 0000000000000000 RSI: ffffffff81c06cad RDI: 0000000000000005 [ 44.014229] RBP: ffff8881cd5a6958 R08: ffff8881d14cc700 R09: ffffed10379b5381 [ 44.021479] R10: ffffed10379b5381 R11: ffff8881bcda9c0b R12: 0000000000040000 [ 44.028732] R13: 00000000000742ca R14: ffff8881da96f008 R15: 0000000000000002 [ 44.035995] ? alloc_pages_vma+0x1af/0x4a0 [ 44.040214] ? alloc_pages_vma+0x1bd/0x4a0 [ 44.044435] ? alloc_pages_vma+0x1bd/0x4a0 [ 44.048658] do_huge_pmd_wp_page+0x1373/0x5fc0 [ 44.053226] ? print_usage_bug+0xc0/0xc0 [ 44.057277] ? __split_huge_pmd+0xa70/0xa70 [ 44.061597] ? lock_unpin_lock+0x4a0/0x4a0 [ 44.065821] ? mark_held_locks+0x130/0x130 [ 44.070037] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 44.074608] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.080127] ? __alloc_pages_nodemask+0x653/0xea0 [ 44.084955] ? trace_hardirqs_off_caller+0x310/0x310 [ 44.090044] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 44.095563] ? kernel_poison_pages+0x15a/0x290 [ 44.100127] ? kasan_unpoison_shadow+0x35/0x50 [ 44.104690] ? preempt_count_add+0xbc/0x1b0 [ 44.108996] ? get_page_from_freelist+0x17ae/0x5340 [ 44.114012] ? noop_count+0x40/0x40 [ 44.117623] ? print_bfs_bug+0x80/0x80 [ 44.121500] ? find_held_lock+0x36/0x1c0 [ 44.125547] ? check_usage+0x1aa/0x790 [ 44.129420] ? __unlock_page_memcg+0x53/0x100 [ 44.133908] ? check_usage_forwards+0x3d0/0x3d0 [ 44.138557] ? __lock_acquire+0x62f/0x4c20 [ 44.142775] ? __bfs+0x321/0x780 [ 44.146128] ? print_usage_bug+0xc0/0xc0 [ 44.150172] ? print_bfs_bug+0x80/0x80 [ 44.154050] ? print_usage_bug+0xc0/0xc0 [ 44.158098] ? __lock_acquire+0x62f/0x4c20 [ 44.162318] ? kasan_check_read+0x11/0x20 [ 44.166449] ? __lock_acquire+0x2aff/0x4c20 [ 44.170758] ? __lock_acquire+0x62f/0x4c20 [ 44.175004] ? mark_held_locks+0x130/0x130 [ 44.179233] ? mark_held_locks+0x130/0x130 [ 44.183457] ? mark_held_locks+0x130/0x130 [ 44.187671] ? print_usage_bug+0xc0/0xc0 [ 44.191710] ? lock_downgrade+0x900/0x900 [ 44.195842] ? print_usage_bug+0xc0/0xc0 [ 44.199886] ? print_usage_bug+0xc0/0xc0 [ 44.203945] ? __lock_acquire+0x62f/0x4c20 [ 44.208160] ? __lock_acquire+0x62f/0x4c20 [ 44.212387] ? mark_held_locks+0x130/0x130 [ 44.216609] ? mark_held_locks+0x130/0x130 [ 44.220832] ? is_bpf_text_address+0xac/0x170 [ 44.225311] ? find_held_lock+0x36/0x1c0 [ 44.229363] __handle_mm_fault+0x2ddc/0x5be0 [ 44.233772] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 44.238599] ? print_usage_bug+0xc0/0xc0 [ 44.242643] ? do_raw_spin_unlock+0xa7/0x330 [ 44.247049] ? trace_hardirqs_on+0x310/0x310 [ 44.251448] ? zap_class+0x640/0x640 [ 44.255144] ? zap_class+0x640/0x640 [ 44.258845] ? find_held_lock+0x36/0x1c0 [ 44.262899] ? handle_mm_fault+0x42a/0xc70 [ 44.267120] ? lock_downgrade+0x900/0x900 [ 44.271254] ? check_preemption_disabled+0x48/0x280 [ 44.276253] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 44.281164] ? kasan_check_read+0x11/0x20 [ 44.285294] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 44.290553] ? rcu_softirq_qs+0x20/0x20 [ 44.294511] ? trace_hardirqs_off_caller+0x310/0x310 [ 44.299599] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.305119] ? check_preemption_disabled+0x48/0x280 [ 44.310121] handle_mm_fault+0x54f/0xc70 [ 44.314169] ? __handle_mm_fault+0x5be0/0x5be0 [ 44.318737] ? find_vma+0x34/0x190 [ 44.322280] __do_page_fault+0x5e8/0xe60 [ 44.326330] do_page_fault+0xf2/0x7e0 [ 44.330121] ? vmalloc_sync_all+0x30/0x30 [ 44.334254] ? error_entry+0x76/0xd0 [ 44.337952] ? trace_hardirqs_off_caller+0xbb/0x310 [ 44.342951] ? find_held_lock+0x36/0x1c0 [ 44.346995] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.351819] ? trace_hardirqs_on_caller+0x310/0x310 [ 44.356825] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.361669] page_fault+0x1e/0x30 [ 44.365108] RIP: 0010:__clear_user+0x3b/0x70 [ 44.369500] 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 [ 44.388381] RSP: 0000:ffff8881cd5a7ae8 EFLAGS: 00010202 [ 44.393725] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008 [ 44.400973] RDX: 0000000000000000 RSI: ffffffff81b1b3d3 RDI: 00000000200001c0 [ 44.408222] RBP: ffff8881cd5a7af8 R08: 1ffff11039ab4f39 R09: 0000000000000008 [ 44.415477] R10: 0000000000000001 R11: ffff8881d14cc700 R12: 00000000200001c0 [ 44.422728] R13: 000000001fffffc0 R14: 0000000000000001 R15: 00007ffffffff000 [ 44.429987] ? __might_fault+0x1a3/0x1e0 [ 44.434033] ? __clear_user+0x23/0x70 [ 44.437818] copy_fpstate_to_sigframe+0x297/0x530 [ 44.442647] get_sigframe.isra.11.constprop.12+0x559/0xd30 [ 44.448268] ? restore_sigcontext+0x780/0x780 [ 44.452751] ? force_sig_info+0x281/0x310 [ 44.456887] ? force_sig_fault+0x12c/0x1d0 [ 44.461123] do_signal+0xadc/0x21c0 [ 44.465086] ? setup_sigcontext+0x7d0/0x7d0 [ 44.469415] ? __bad_area_nosemaphore+0x2e1/0x3a0 [ 44.474250] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.479770] ? exit_to_usermode_loop+0x8c/0x380 [ 44.484421] ? exit_to_usermode_loop+0x8c/0x380 [ 44.489075] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 44.493650] exit_to_usermode_loop+0x2e5/0x380 [ 44.498216] ? __bpf_trace_sys_exit+0x30/0x30 [ 44.502701] ? trace_hardirqs_off_caller+0xbb/0x310 [ 44.507701] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.512525] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.517359] prepare_exit_to_usermode+0x342/0x3b0 [ 44.522189] ? trace_event_raw_event_sys_enter+0x700/0x700 [ 44.527799] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.532624] ? page_fault+0x8/0x30 [ 44.536151] retint_user+0x8/0x18 [ 44.539582] RIP: 0033: (null) [ 44.543447] Code: Bad RIP value. [ 44.546792] RSP: 002b:0000000020000388 EFLAGS: 00010217 [ 44.552135] RAX: 0000000000000000 RBX: 00007fffdcec2640 RCX: 00000000004409c9 [ 44.559393] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000000 [ 44.566646] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 44.573917] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401eb0 [ 44.581170] R13: 0000000000401f40 R14: 0000000000000000 R15: 0000000000000000 [ 44.589566] Kernel Offset: disabled [ 44.593253] Rebooting in 86400 seconds..