[ 29.966732] audit: type=1800 audit(1544129203.348:27): pid=6003 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 30.001476] audit: type=1800 audit(1544129203.348:28): pid=6003 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 30.721343] audit: type=1800 audit(1544129204.168:29): pid=6003 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 30.742251] audit: type=1800 audit(1544129204.168:30): pid=6003 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.317057] WARNING: CPU: 0 PID: 6160 at mm/mempolicy.c:1745 alloc_pages_vma+0x1bd/0x4a0 [ 38.325471] Kernel panic - not syncing: panic_on_warn set ... [ 38.331346] CPU: 0 PID: 6160 Comm: syz-executor433 Not tainted 4.20.0-rc5+ #267 [ 38.338773] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.348130] Call Trace: [ 38.350707] dump_stack+0x244/0x39d [ 38.354320] ? dump_stack_print_info.cold.1+0x20/0x20 [ 38.359498] panic+0x2ad/0x55c [ 38.362674] ? add_taint.cold.5+0x16/0x16 [ 38.366816] ? __warn.cold.8+0x5/0x45 [ 38.370597] ? __warn+0xe8/0x1d0 [ 38.373949] ? alloc_pages_vma+0x1bd/0x4a0 [ 38.378164] __warn.cold.8+0x20/0x45 [ 38.381862] ? rcu_softirq_qs+0x20/0x20 [ 38.385831] ? alloc_pages_vma+0x1bd/0x4a0 [ 38.390065] report_bug+0x254/0x2d0 [ 38.393680] do_error_trap+0x11b/0x200 [ 38.397563] do_invalid_op+0x36/0x40 [ 38.401262] ? alloc_pages_vma+0x1bd/0x4a0 [ 38.405494] invalid_op+0x14/0x20 [ 38.408932] RIP: 0010:alloc_pages_vma+0x1bd/0x4a0 [ 38.413769] 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 [ 38.432659] RSP: 0000:ffff8881ba68e828 EFLAGS: 00010293 [ 38.438007] RAX: ffff8881aea645c0 RBX: ffff8881da96f000 RCX: ffffffff81c06c9f [ 38.445259] RDX: 0000000000000000 RSI: ffffffff81c06cad RDI: 0000000000000005 [ 38.452510] RBP: ffff8881ba68e868 R08: ffff8881aea645c0 R09: ffffed1037e111ad [ 38.459763] R10: ffffed1037e111ad R11: ffff8881bf088d6b R12: 0000000000040000 [ 38.467014] R13: 00000000000742ca R14: ffff8881da96f008 R15: 0000000000000002 [ 38.474279] ? alloc_pages_vma+0x1af/0x4a0 [ 38.478497] ? alloc_pages_vma+0x1bd/0x4a0 [ 38.482717] ? alloc_pages_vma+0x1bd/0x4a0 [ 38.486940] do_huge_pmd_wp_page+0x1373/0x5fc0 [ 38.491514] ? __split_huge_pmd+0xa70/0xa70 [ 38.495878] ? noop_count+0x40/0x40 [ 38.499493] ? print_bfs_bug+0x80/0x80 [ 38.503377] ? check_usage+0x1aa/0x790 [ 38.507261] ? __lock_acquire+0x62f/0x4c20 [ 38.511488] ? check_usage_forwards+0x3d0/0x3d0 [ 38.516148] ? __lock_acquire+0x62f/0x4c20 [ 38.520365] ? __bfs+0x321/0x780 [ 38.523717] ? mark_held_locks+0x130/0x130 [ 38.527939] ? print_usage_bug+0xc0/0xc0 [ 38.531981] ? lockdep_on+0x50/0x50 [ 38.535591] ? print_bfs_bug+0x80/0x80 [ 38.539464] ? mark_held_locks+0x130/0x130 [ 38.543688] ? print_usage_bug+0xc0/0xc0 [ 38.547752] ? __lock_acquire+0x62f/0x4c20 [ 38.551976] ? kasan_check_read+0x11/0x20 [ 38.556111] ? __lock_acquire+0x2aff/0x4c20 [ 38.560431] ? print_usage_bug+0xc0/0xc0 [ 38.564476] ? print_usage_bug+0xc0/0xc0 [ 38.568517] ? mark_held_locks+0x130/0x130 [ 38.572743] ? mark_held_locks+0x130/0x130 [ 38.576959] ? print_usage_bug+0xc0/0xc0 [ 38.581007] ? __lock_acquire+0x62f/0x4c20 [ 38.585247] ? __lock_acquire+0x62f/0x4c20 [ 38.589476] ? mark_held_locks+0x130/0x130 [ 38.593692] ? mark_held_locks+0x130/0x130 [ 38.597911] ? zap_class+0x640/0x640 [ 38.601642] __handle_mm_fault+0x2ddc/0x5be0 [ 38.606042] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 38.610868] ? print_usage_bug+0xc0/0xc0 [ 38.614912] ? find_held_lock+0x36/0x1c0 [ 38.618971] ? zap_class+0x640/0x640 [ 38.622668] ? zap_class+0x640/0x640 [ 38.626370] ? find_held_lock+0x36/0x1c0 [ 38.630419] ? handle_mm_fault+0x42a/0xc70 [ 38.634639] ? lock_downgrade+0x900/0x900 [ 38.638774] ? check_preemption_disabled+0x48/0x280 [ 38.643778] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 38.648694] ? kasan_check_read+0x11/0x20 [ 38.652823] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 38.658098] ? rcu_softirq_qs+0x20/0x20 [ 38.662063] ? trace_hardirqs_off_caller+0x310/0x310 [ 38.667151] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.672674] ? check_preemption_disabled+0x48/0x280 [ 38.677677] handle_mm_fault+0x54f/0xc70 [ 38.681727] ? __handle_mm_fault+0x5be0/0x5be0 [ 38.686292] ? find_vma+0x34/0x190 [ 38.689833] __do_page_fault+0x5e8/0xe60 [ 38.693883] do_page_fault+0xf2/0x7e0 [ 38.697668] ? vmalloc_sync_all+0x30/0x30 [ 38.701803] ? error_entry+0x76/0xd0 [ 38.705501] ? trace_hardirqs_off_caller+0xbb/0x310 [ 38.710504] ? find_held_lock+0x36/0x1c0 [ 38.714550] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.719375] ? trace_hardirqs_on_caller+0x310/0x310 [ 38.724381] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.729211] page_fault+0x1e/0x30 [ 38.732652] RIP: 0010:__clear_user+0x3b/0x70 [ 38.737042] 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 [ 38.755942] RSP: 0000:ffff8881ba68f9f8 EFLAGS: 00010202 [ 38.761291] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008 [ 38.768547] RDX: 0000000000000000 RSI: ffffffff81b1b3d3 RDI: 0000000020000240 [ 38.775806] RBP: ffff8881ba68fa08 R08: 1ffff110374d1f1b R09: 0000000000000008 [ 38.783061] R10: 0000000000000001 R11: ffff8881aea645c0 R12: 0000000020000240 [ 38.790330] R13: 000000001fffffd0 R14: 0000000000000001 R15: 00007ffffffff000 [ 38.797633] ? __might_fault+0x1a3/0x1e0 [ 38.801686] ? __clear_user+0x23/0x70 [ 38.805472] copy_fpstate_to_sigframe+0x297/0x530 [ 38.810306] get_sigframe.isra.2.constprop.3+0x4e4/0x630 [ 38.815746] ? ia32_restore_sigcontext+0x520/0x520 [ 38.820662] ? get_signal+0xfaf/0x1980 [ 38.824537] ? ptrace_notify+0x130/0x130 [ 38.828594] ia32_setup_rt_frame+0xe8/0x950 [ 38.832926] ? ia32_setup_frame+0x7b0/0x7b0 [ 38.837234] ? force_sig_fault+0x12c/0x1d0 [ 38.841456] do_signal+0x42c/0x21c0 [ 38.845072] ? kasan_check_write+0x14/0x20 [ 38.849296] ? setup_sigcontext+0x7d0/0x7d0 [ 38.853603] ? __bad_area_nosemaphore+0x2e1/0x3a0 [ 38.858444] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.863968] ? exit_to_usermode_loop+0x8c/0x380 [ 38.868625] ? exit_to_usermode_loop+0x8c/0x380 [ 38.873282] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 38.877854] exit_to_usermode_loop+0x2e5/0x380 [ 38.882433] ? __bpf_trace_sys_exit+0x30/0x30 [ 38.886912] ? trace_hardirqs_off_caller+0xbb/0x310 [ 38.891911] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.896735] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.901575] prepare_exit_to_usermode+0x342/0x3b0 [ 38.906404] ? trace_event_raw_event_sys_enter+0x700/0x700 [ 38.912019] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.916859] ? page_fault+0x8/0x30 [ 38.920384] retint_user+0x8/0x18 [ 38.923819] RIP: 0023: (null) [ 38.927707] Code: Bad RIP value. [ 38.931052] RSP: 002b:0000000020000390 EFLAGS: 00010282 [ 38.936407] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 38.943661] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 38.950915] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 38.958165] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 38.965432] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 38.973866] Kernel Offset: disabled [ 38.977555] Rebooting in 86400 seconds..