Richard Purdie 5c928099ed dwarfsrcfiles: Avoid races over debug-link files ...

We use dwarfsrcfiles in package.bbclass to list the source files used by a binary.
This is done before they're stripped and linked to debug symbols in separate files.

It is possible a binary may already have a link to separate debug symbols, e.g.
some of the test binaries in lttng-tools ptest. In those cases, the linked binary
may be changed by package.bbclass code whilst dwarfsrcfiles is reading it. That
would result in a rare SIGBUS race causing the binary to fail.

To avoid this, break the debug file search path so no other binaries are found.

Also fix a segfault if no binary is specified while here.

[YOCTO #14400]

(From OE-Core rev: efef732859e265533acf16f2f4da3b29d50e0df4)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2021-07-07 11:39:42 +01:00

..

dwarfsrcfiles.c

dwarfsrcfiles: Avoid races over debug-link files

2021-07-07 11:39:42 +01:00