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[bug-libsigsegv] libsigsegv together with kernel 3.18.3


From: Dimstar / Dominique Leuenberger
Subject: [bug-libsigsegv] libsigsegv together with kernel 3.18.3
Date: Tue, 27 Jan 2015 13:50:13 +0100

Dear List,

Seems a small, subtle change in the kernel causes libsigsegv to no
longer pass its test suite, namely it fails like:

[   61s] PASS: sigsegv1
[   61s] Test passed.
[   61s] PASS: sigsegv2
[   61s] Doing SIGSEGV pass 1.
[   61s] Stack overflow 1 caught.
[   61s] Doing SIGSEGV pass 2.
[   61s] Stack overflow 2 caught.
[   61s] Test passed.
[   61s] PASS: sigsegv3
[   61s] /bin/sh: line 5:  3525 Bus error               ${dir}$tst
[   61s] FAIL: stackoverflow1
[   61s] /bin/sh: line 5:  3543 Bus error               ${dir}$tst
[   61s] FAIL: stackoverflow2
[   61s] ===================
[   61s] 2 of 5 tests failed
[   61s] ===================

Discussion with some kernel folks hints at commit fee7e49d (mm:
propagate error from stack expansion even for guard page) being
repsonsible for this change.

Is there any plan by the libsigsegv development team to address this in
any special way?

Cheers,
Dominique
-- 
Dimstar / Dominique Leuenberger <address@hidden>




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