commit c27d72478c10a7d8648217bc817f8429939e8828
Author: Matthew Dillon <[email protected]>
Date: Sat Jan 25 15:44:57 2020 -0800
libc - Check for invalid context in setcontext() and swapcontext()
* Check for an invalid context in setcontext() and swapcontext()
and return -1 instead of switching to the invalid context.
* This is not an exhaustive check but will handle invalid states set
by makecontext() if e.g. argc is messed up or the supplied stack is
too small. In particular, if makecontext() fails and set/swap tries
to switch to it, it will switch to the state from the getcontext()
prior to the makecontext() instead of to the desired makecontext()
state.
Reported-by: zrj, tuxillo
Summary of changes:
lib/libc/gen/ucontext.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/c27d72478c10a7d8648217bc817f8429939e8828
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DragonFly BSD source repository
