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authorVegard Nossum <vegard.nossum@oracle.com>2016-05-21 17:46:10 +0200
committerRichard Weinberger <richard@nod.at>2016-08-04 00:18:06 +0200
commit915eed20e40f4dcb142cb29a3de6f6ba67f4bb5a (patch)
treedc606eee62b4f6ed16b456450c4cc3523aab719f /fs/hostfs
parent8e99bc70468dcc42a756ca4b100e2fb2c30c4c89 (diff)
downloadtalos-obmc-linux-915eed20e40f4dcb142cb29a3de6f6ba67f4bb5a.tar.gz
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um: Support kcov
This adds support for kcov to UML. There is a small problem where UML will randomly segfault during boot; this is because current_thread_info() occasionally returns an invalid (non-NULL) pointer and we try to dereference it in __sanitizer_cov_trace_pc(). I consider this a bug in UML itself and this patch merely exposes it. [v2: disable instrumentation in UML-specific code] Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> Cc: Richard Weinberger <richard@nod.at> Cc: Thomas Meyer <thomas@m3y3r.de> Cc: user-mode-linux-devel <user-mode-linux-devel@lists.sourceforge.net> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Richard Weinberger <richard@nod.at>
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