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[209.85.220.69]) by mx.google.com with SMTPS id s2sor52751484ios.38.2019.08.02.10.58.05 for (Google Transport Security); Fri, 02 Aug 2019 10:58:06 -0700 (PDT) Received-SPF: pass (google.com: domain of 3rxlexqkbakiuabmcnngtcrrkf.iqqingwugteqpvgpv.eqo@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69; Authentication-Results: mx.google.com; spf=pass (google.com: domain of 3rxlexqkbakiuabmcnngtcrrkf.iqqingwugteqpvgpv.eqo@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3rXlEXQkbAKIUabMCNNGTCRRKF.IQQINGWUGTEQPVGPV.EQO@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Google-Smtp-Source: APXvYqzLhSuB+g/dBt/46an5igOJbXyOVXGaJ1Mtb9YcYfXTepiNxCdC0OiFOIrsNAtI5+FJipCIfZ0xO4kqN9v/qnF3bhaMei+d MIME-Version: 1.0 X-Received: by 2002:a6b:da1a:: with SMTP id x26mr100598512iob.285.1564768685611; Fri, 02 Aug 2019 10:58:05 -0700 (PDT) Date: Fri, 02 Aug 2019 10:58:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a9694d058f261963@google.com> Subject: kernel BUG at mm/vmscan.c:LINE! (2) From: syzbot To: akpm@linux-foundation.org, chris@chrisdown.name, chris@zankel.net, dancol@google.com, dave.hansen@intel.com, hannes@cmpxchg.org, hdanton@sina.com, james.bottomley@hansenpartnership.com, kirill.shutemov@linux.intel.com, ktkhai@virtuozzo.com, laoar.shao@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mgorman@techsingularity.net, mhocko@kernel.org, mhocko@suse.com, minchan@kernel.org, oleksandr@redhat.com, ralf@linux-mips.org, rth@twiddle.net, sfr@canb.auug.org.au, shakeelb@google.com, sonnyrao@google.com, surenb@google.com, syzkaller-bugs@googlegroups.com, timmurray@google.com, yang.shi@linux.alibaba.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot found the following crash on: HEAD commit: 0d8b3265 Add linux-next specific files for 20190729 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1663c7d0600000 kernel config: https://syzkaller.appspot.com/x/.config?x=ae96f3b8a7e885f7 dashboard link: https://syzkaller.appspot.com/bug?extid=8e6326965378936537c3 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=133c437c600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15645854600000 The bug was bisected to: commit 06a833a1167e9cbb43a9a4317ec24585c6ec85cb Author: Minchan Kim Date: Sat Jul 27 05:12:38 2019 +0000 mm: introduce MADV_PAGEOUT bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1545f764600000 final crash: https://syzkaller.appspot.com/x/report.txt?x=1745f764600000 console output: https://syzkaller.appspot.com/x/log.txt?x=1345f764600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+8e6326965378936537c3@syzkaller.appspotmail.com Fixes: 06a833a1167e ("mm: introduce MADV_PAGEOUT") raw: 01fffc0000090025 dead000000000100 dead000000000122 ffff88809c49f741 raw: 0000000000020000 0000000000000000 00000002ffffffff ffff88821b6eaac0 page dumped because: VM_BUG_ON_PAGE(PageActive(page)) page->mem_cgroup:ffff88821b6eaac0 ------------[ cut here ]------------ kernel BUG at mm/vmscan.c:1156! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9846 Comm: syz-executor110 Not tainted 5.3.0-rc2-next-20190729 #54 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:shrink_page_list+0x2872/0x5430 mm/vmscan.c:1156 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 RSP: 0018:ffff888092427598 EFLAGS: 00010293 RAX: ffff88809a6a43c0 RBX: 0000000000000020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff819bfec7 RDI: ffffed1012484e97 RBP: ffff888092427730 R08: 0000000000000021 R09: ffffed1015d260d1 R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: dffffc0000000000 R13: ffffea0002198000 R14: 0000000000000000 R15: ffffea0002198008 FS: 000055555617d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 00000000a818a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reclaim_pages+0x3b8/0x8f0 mm/vmscan.c:2202 madvise_cold_or_pageout_pte_range+0x18c4/0x2e20 mm/madvise.c:391 walk_pmd_range mm/pagewalk.c:51 [inline] walk_pud_range mm/pagewalk.c:109 [inline] walk_p4d_range mm/pagewalk.c:135 [inline] walk_pgd_range mm/pagewalk.c:161 [inline] __walk_page_range+0xd2a/0x1680 mm/pagewalk.c:254 walk_page_range+0x1a6/0x3e0 mm/pagewalk.c:335 madvise_pageout_page_range.isra.0+0xdd/0x120 mm/madvise.c:532 madvise_pageout+0x227/0x3a0 mm/madvise.c:568 madvise_vma mm/madvise.c:965 [inline] __do_sys_madvise mm/madvise.c:1145 [inline] __se_sys_madvise mm/madvise.c:1073 [inline] __x64_sys_madvise+0x719/0x1500 mm/madvise.c:1073 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440149 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 RSP: 002b:00007ffdb1a77db8 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149 RDX: 0000000000000015 RSI: 0000000000600003 RDI: 0000000020000000 RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0 R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace f888ef64246a2afc ]--- RIP: 0010:shrink_page_list+0x2872/0x5430 mm/vmscan.c:1156 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 RSP: 0018:ffff888092427598 EFLAGS: 00010293 RAX: ffff88809a6a43c0 RBX: 0000000000000020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff819bfec7 RDI: ffffed1012484e97 RBP: ffff888092427730 R08: 0000000000000021 R09: ffffed1015d260d1 R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: dffffc0000000000 R13: ffffea0002198000 R14: 0000000000000000 R15: ffffea0002198008 FS: 000055555617d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 00000000a818a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches