Messages in this thread | | | Subject | Re: kernel BUG at mm/vmscan.c:LINE! (2) | From | David Hildenbrand <> | Date | Mon, 28 Oct 2019 17:18:19 +0100 |
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On 02.08.19 22:06, Minchan Kim wrote: > On Fri, Aug 02, 2019 at 10:58:05AM -0700, syzbot wrote: >> 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 <minchan@kernel.org> >> 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 > > My old version had PG_active flag clear but it seems to lose it with revising > patchsets. Thanks, Sizbot! > > From 66d64988619ef7e86b0002b2fc20fdf5b84ad49c Mon Sep 17 00:00:00 2001 > From: Minchan Kim <minchan@kernel.org> > Date: Sat, 3 Aug 2019 04:54:02 +0900 > Subject: [PATCH] mm: Clear PG_active on MADV_PAGEOUT > > shrink_page_list expects every pages as argument should be no active > LRU pages so we need to clear PG_active. > > Reported-by: syzbot+8e6326965378936537c3@syzkaller.appspotmail.com > Fixes: 06a833a1167e ("mm: introduce MADV_PAGEOUT")
I think this should be
Fixed: 1a4e58cce84e ("mm: introduce MADV_PAGEOUT")
$ git show 1a4e58cce84e commit 1a4e58cce84ee88129d5d49c064bd2852b481357 Author: Minchan Kim <minchan@kernel.org> Date: Wed Sep 25 16:49:15 2019 -0700
mm: introduce MADV_PAGEOUT [...]
$ git tag --contains 1a4e58cce84ee88129d5d49c064bd2852b481357 [...] v5.4-rc5
--
Thanks,
David / dhildenb
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