https://bugs.kde.org/show_bug.cgi?id=379094
Bug ID: 379094
Summary: Valgrind reports INTERNAL ERROR in rt_sigsuspend
syscall wrapper
Product: valgrind
Version: 3.13 SVN
Platform: Compiled Sources
OS: Linux
Status: UNCONFIRMED
Severity: crash
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: iv...@ivosh.net
Target Milestone: ---
Valgrind reports INTERNAL ERROR when a bogus address is passed to
rt_sigsuspend(mask) syscall wrapper.
That's because the syscall wrapper blindly passes mask (ARG1) to
VG_(sigdelset)() which in turn dereferences ARG1. The syscall wrapper needs to
check first if the memory can be safely dereferenced via
ML_(safe_to_deref)(ARG1, sizeof(vki_sigset_t)).
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