https://bugs.kde.org/show_bug.cgi?id=399087
--- Comment #10 from Tom Hughes ---
The readlink support was introduced in
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;a=commitdiff;h=423bfef15b2e275314263fea8af11a29d5509110
(later extended to readlinkat) and the NEWS entry in
https://bugs.kde.org/show_bug.cgi?id=399087
--- Comment #9 from Tom Hughes ---
Oddly it seems NEWS.old claims that support was added for both open and
readlink in 2.4.0 but I'm not sure that's true, or if it is then I think open
has been lost...
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Tom Hughes changed:
What|Removed |Added
CC||t...@compton.nu
--- Comment #8 from Tom Hughes
https://bugs.kde.org/show_bug.cgi?id=399087
--- Comment #7 from John Reiser ---
The root cause is a symlink vulnerability! coregrind fails to do the right
thing when the target executes
int fd_i_am = open("/proc/self/exe", O_RDONLY);
upx uses mmap(fd_i_am,) to replicate portions of the
https://bugs.kde.org/show_bug.cgi?id=399087
--- Comment #6 from Julian Seward ---
It would be useful if you could re-run with no instrumentation (--tool=none)
and re-post the same logs as before. That has two purposes: first, many
fewer generated insns to wade through, and secondly, if the
https://bugs.kde.org/show_bug.cgi?id=399087
--- Comment #5 from Julian Seward ---
(In reply to John Reiser from comment #0)
It's clear that the thing has gone off of the rails somehow, but I'm not
sure I agree with your conclusion here:
> EXPECTED RESULT
> "add r15, r6, r10" is recognized as a
https://bugs.kde.org/show_bug.cgi?id=399087
--- Comment #4 from John Reiser ---
Executions were on Fedora 29 beta using valgrind-3.13.0-28.fc29.armv7hl.rpm.
The same result was obtained using Fedora 28 (released, prior version of OS)
with the same valgrind rpm.
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--- Comment #3 from John Reiser ---
Created attachment 115241
--> https://bugs.kde.org/attachment.cgi?id=115241=edit
console output with --trace-flags
valgrind --trace-flags=1001 --trace-notbelow=108 ./foo 2>&1 | more
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--- Comment #2 from John Reiser ---
Created attachment 115240
--> https://bugs.kde.org/attachment.cgi?id=115240=edit
console output of plain memcheck
Note parameter --smc-check=all as an attempt to check carefully for non-static
code.
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--- Comment #1 from John Reiser ---
Created attachment 115239
--> https://bugs.kde.org/attachment.cgi?id=115239=edit
target program, compressed by upx
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