Date: Sat, 6 Apr 2002 20:47:58 -0800 (PST) From: Dima Dorfman <dd@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/lib/libkvm kvm_proc.c Message-ID: <200204070447.g374lwR75411@freefall.freebsd.org>
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dd 2002/04/06 20:47:58 PST
Modified files:
lib/libkvm kvm_proc.c
Log:
Fix (for the second time) kvm_getprocs() for the case where no
processes match the given criteria. Since revision 1.60 of malloc.c,
malloc() and friends return an invalid pointer when given a size of 0.
kvm_getprocs() uses sysctl() with a NULL oldp argument to get an
initial size, but does not check whether it's 0 before passing it to
realloc() (via _kvm_realloc()). Before the aforementioned malloc()
change, this resulted in a minimal allocation made and a valid poitner
returned, but now results in an invalid, but non-NULL, pointer being
returned. When this is passed to sysctl(), the latter returns EFAULT
(as it should).
Revision Changes Path
1.46 +26 -0 src/lib/libkvm/kvm_proc.c
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