linux-kernel - kernel BUG at mm/swap

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Date:   Wed, 29 May 2019 09:05:06 +0500
From:   Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To:     Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        linux-mm@...ck.org
Subject: kernel BUG at mm/swap_state.c:170!

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!




--
Best Regards,
Mike Gavrilov.