[ 67.317917][ T24] audit: type=1800 audit(1564417522.091:27): pid=9695 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 67.363741][ T24] audit: type=1800 audit(1564417522.091:28): pid=9695 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. [ 68.083495][ T24] audit: type=1800 audit(1564417522.901:29): pid=9695 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 [ 68.103832][ T24] audit: type=1800 audit(1564417522.901:30): pid=9695 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 '10.128.1.0' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.794244][ T9846] page:ffffea0002198000 refcount:2 mapcount:1 mapping:ffff88809c49f741 index:0x20000 compound_mapcount: 1 [ 78.805814][ T9846] anon [ 78.805828][ T9846] flags: 0x1fffc0000090025(locked|uptodate|active|head|swapbacked) [ 78.817114][ T9846] raw: 01fffc0000090025 dead000000000100 dead000000000122 ffff88809c49f741 [ 78.826947][ T9846] raw: 0000000000020000 0000000000000000 00000002ffffffff ffff88821b6eaac0 [ 78.835612][ T9846] page dumped because: VM_BUG_ON_PAGE(PageActive(page)) [ 78.842796][ T9846] page->mem_cgroup:ffff88821b6eaac0 [ 78.848470][ T9846] ------------[ cut here ]------------ [ 78.854282][ T9846] kernel BUG at mm/vmscan.c:1156! [ 78.860082][ T9846] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 78.866559][ T9846] CPU: 1 PID: 9846 Comm: syz-executor110 Not tainted 5.3.0-rc2-next-20190729 #54 [ 78.875925][ T9846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.886637][ T9846] RIP: 0010:shrink_page_list+0x2872/0x5430 [ 78.892775][ T9846] Code: d9 ea ff ff e8 df 3c dd ff 4c 8d 6b ff e9 1c db ff ff e8 d1 3c dd ff 48 8b bd 10 ff ff ff 48 c7 c6 80 85 93 87 e8 fe 10 07 00 <0f> 0b e8 b7 3c dd ff be 08 00 00 00 4c 89 ef e8 0a f2 17 00 4c 89 [ 78.912931][ T9846] RSP: 0018:ffff888092427598 EFLAGS: 00010293 [ 78.919086][ T9846] RAX: ffff88809a6a43c0 RBX: 0000000000000020 RCX: 0000000000000000 [ 78.927755][ T9846] RDX: 0000000000000000 RSI: ffffffff819bfec7 RDI: ffffed1012484e97 [ 78.935745][ T9846] RBP: ffff888092427730 R08: 0000000000000021 R09: ffffed1015d260d1 [ 78.943846][ T9846] R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: dffffc0000000000 [ 78.952207][ T9846] R13: ffffea0002198000 R14: 0000000000000000 R15: ffffea0002198008 [ 78.961162][ T9846] FS: 000055555617d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 78.970105][ T9846] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.976853][ T9846] CR2: 0000000020000080 CR3: 00000000a818a000 CR4: 00000000001406e0 [ 78.985128][ T9846] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.993200][ T9846] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.001168][ T9846] Call Trace: [ 79.004459][ T9846] ? __kasan_check_read+0x11/0x20 [ 79.009480][ T9846] ? mark_held_locks+0xf0/0xf0 [ 79.014253][ T9846] ? page_evictable+0x3b0/0x3b0 [ 79.019151][ T9846] ? __kasan_check_write+0x14/0x20 [ 79.024691][ T9846] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 79.030394][ T9846] reclaim_pages+0x3b8/0x8f0 [ 79.034973][ T9846] ? disk_unblock_events+0x4c/0x60 [ 79.040092][ T9846] ? reclaim_clean_pages_from_list+0xc80/0xc80 [ 79.046314][ T9846] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.052665][ T9846] ? lock_downgrade+0x920/0x920 [ 79.057786][ T9846] ? __kasan_check_read+0x11/0x20 [ 79.062950][ T9846] ? _raw_spin_unlock_irq+0x5e/0x90 [ 79.068162][ T9846] ? __kasan_check_read+0x11/0x20 [ 79.073348][ T9846] ? do_raw_spin_unlock+0x57/0x270 [ 79.078568][ T9846] madvise_cold_or_pageout_pte_range+0x18c4/0x2e20 [ 79.085072][ T9846] ? swapin_walk_pmd_entry+0x670/0x670 [ 79.091000][ T9846] ? is_bpf_text_address+0xd3/0x170 [ 79.096475][ T9846] ? kernel_text_address+0x73/0xf0 [ 79.101610][ T9846] ? swapin_walk_pmd_entry+0x670/0x670 [ 79.107104][ T9846] __walk_page_range+0xd2a/0x1680 [ 79.112319][ T9846] walk_page_range+0x1a6/0x3e0 [ 79.117101][ T9846] madvise_pageout_page_range.isra.0+0xdd/0x120 [ 79.123359][ T9846] ? madvise_cold+0x210/0x210 [ 79.128365][ T9846] ? save_stack+0x51/0x90 [ 79.132703][ T9846] ? save_stack+0x23/0x90 [ 79.137038][ T9846] ? __kasan_slab_free+0x102/0x150 [ 79.142159][ T9846] ? swapin_walk_pmd_entry+0x670/0x670 [ 79.148000][ T9846] ? mark_held_locks+0xf0/0xf0 [ 79.152857][ T9846] ? __kasan_check_write+0x14/0x20 [ 79.158498][ T9846] madvise_pageout+0x227/0x3a0 [ 79.163539][ T9846] ? madvise_pageout_page_range.isra.0+0x120/0x120 [ 79.170229][ T9846] ? find_vma+0x30/0x170 [ 79.174596][ T9846] __x64_sys_madvise+0x719/0x1500 [ 79.179735][ T9846] ? trace_hardirqs_on+0x67/0x240 [ 79.184772][ T9846] ? madvise_free_pte_range+0x2580/0x2580 [ 79.190495][ T9846] ? do_sys_open+0x31d/0x5d0 [ 79.195323][ T9846] ? filp_open+0x80/0x80 [ 79.199574][ T9846] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.205935][ T9846] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 79.212218][ T9846] ? trace_hardirqs_off_caller+0x65/0x230 [ 79.218081][ T9846] do_syscall_64+0xfa/0x760 [ 79.222955][ T9846] ? do_syscall_64+0xfa/0x760 [ 79.227647][ T9846] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.234150][ T9846] RIP: 0033:0x440149 [ 79.238072][ T9846] 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 [ 79.257986][ T9846] RSP: 002b:00007ffdb1a77db8 EFLAGS: 00000246 ORIG_RAX: 000000000000001c [ 79.266691][ T9846] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149 [ 79.274865][ T9846] RDX: 0000000000000015 RSI: 0000000000600003 RDI: 0000000020000000 [ 79.283141][ T9846] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 79.291707][ T9846] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0 [ 79.300037][ T9846] R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000 [ 79.308310][ T9846] Modules linked in: [ 79.312681][ T9846] ---[ end trace f888ef64246a2afc ]--- [ 79.318190][ T9846] RIP: 0010:shrink_page_list+0x2872/0x5430 [ 79.324101][ T9846] Code: d9 ea ff ff e8 df 3c dd ff 4c 8d 6b ff e9 1c db ff ff e8 d1 3c dd ff 48 8b bd 10 ff ff ff 48 c7 c6 80 85 93 87 e8 fe 10 07 00 <0f> 0b e8 b7 3c dd ff be 08 00 00 00 4c 89 ef e8 0a f2 17 00 4c 89 [ 79.347422][ T9846] RSP: 0018:ffff888092427598 EFLAGS: 00010293 [ 79.353826][ T9846] RAX: ffff88809a6a43c0 RBX: 0000000000000020 RCX: 0000000000000000 [ 79.364343][ T9846] RDX: 0000000000000000 RSI: ffffffff819bfec7 RDI: ffffed1012484e97 [ 79.373101][ T9846] RBP: ffff888092427730 R08: 0000000000000021 R09: ffffed1015d260d1 [ 79.382068][ T9846] R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: dffffc0000000000 [ 79.391645][ T9846] R13: ffffea0002198000 R14: 0000000000000000 R15: ffffea0002198008 [ 79.402386][ T9846] FS: 000055555617d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.412868][ T9846] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.421600][ T9846] CR2: 0000000020000080 CR3: 00000000a818a000 CR4: 00000000001406e0 [ 79.431281][ T9846] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.440777][ T9846] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.450899][ T9846] Kernel panic - not syncing: Fatal exception [ 79.460550][ T9846] Kernel Offset: disabled [ 79.465622][ T9846] Rebooting in 86400 seconds..