https://bugs.kde.org/show_bug.cgi?id=514297
Bug ID: 514297
Summary: Track madvise MADV_GUARD_INSTALL in address space
manager
Classification: Developer tools
Product: valgrind
Version First 3.25 GIT
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
glibc 2.42+ (with linux 6.13+) uses MADV_GUARD_INSTALL to setup
stack guard pages. valgrind currently isn't able to track this and
such guard pages also don't show up in /proc maps (only in /proc
pagemap since linux 6.14). For now valgrind fails a madvise
MADV_GUARD_INSTALL syscall with EINVAL. This causes glibc to fall
back to mprotect PROT_NONE which valgrind is able to track.
See https://bugs.kde.org/show_bug.cgi?id=511717
It would be better to track madvise MADV_GUARD_INSTALL using the address space
manager.
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