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To: Mikhail Gavrilov Cc: Linux List Kernel Mailing , linux-mm@kvack.org, Huang Ying Content-Type: text/plain; charset="UTF-8" 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: Hi, Mikhail, On Wed, May 29, 2019 at 12:05 PM Mikhail Gavrilov wrote: > > Hi folks. > I am observed kernel panic after update to git tag 5.2-rc2. > This crash happens at memory pressing when swap being used. > > Unfortunately in journalctl saved only this: > > May 29 08:02:02 localhost.localdomain kernel: page:ffffe90958230000 > refcount:1 mapcount:1 mapping:ffff8f3ffeb36949 index:0x625002ab2 > May 29 08:02:02 localhost.localdomain kernel: anon > May 29 08:02:02 localhost.localdomain kernel: flags: > 0x17fffe00080034(uptodate|lru|active|swapbacked) > May 29 08:02:02 localhost.localdomain kernel: raw: 0017fffe00080034 > ffffe90944640888 ffffe90956e208c8 ffff8f3ffeb36949 > May 29 08:02:02 localhost.localdomain kernel: raw: 0000000625002ab2 > 0000000000000000 0000000100000000 ffff8f41aeeff000 > May 29 08:02:02 localhost.localdomain kernel: page dumped because: > VM_BUG_ON_PAGE(entry != page) > May 29 08:02:02 localhost.localdomain kernel: page->mem_cgroup:ffff8f41aeeff000 > May 29 08:02:02 localhost.localdomain kernel: ------------[ cut here > ]------------ > May 29 08:02:02 localhost.localdomain kernel: kernel BUG at mm/swap_state.c:170! I am trying to reproduce this bug. Can you give me some information about your test case? Best Regards, Huang, Ying