------- Comment From hbath...@in.ibm.com 2017-01-11 10:55 EDT-------
Kernel commit f5509cc18daa ("mm: Hardened usercopy") introduced the
BUG() we are hitting here.
This BUG() was also hit while reading kcore, which was fixed with
kernel commit df04abfd181a ("fs/proc/kcore.c: Add bounce buffer
for ktext data"). Not convinced if similar fix is ideal here.
Working on the fix.
This issue is not just observed with ssh dump target but also with
other dump targets. Updated the bug summary accordingly..
Thanks
Hari
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https://bugs.launchpad.net/bugs/1655241
Title:
Ubuntu 17.04: "Oops: Exception in kernel mode, sig: 5 [#1]" seen
during fadump over ssh on Alpine machine.
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