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From: Samuel Thibault <sthibaul@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] hurd: Make dl-sysdep __sbrk check __vm_allocate call Date: Mon, 2 Jan 2023 10:36:36 +0000 (GMT) [thread overview] Message-ID: <20230102103636.B3E193858408@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b7a5fec8b04edb505f51c207ae50b6777c2c55b2 commit b7a5fec8b04edb505f51c207ae50b6777c2c55b2 Author: Samuel Thibault <samuel.thibault@ens-lyon.org> Date: Mon Jan 2 01:49:59 2023 +0100 hurd: Make dl-sysdep __sbrk check __vm_allocate call The caller won't be able to progress, but better crash than use random addr. Diff: --- sysdeps/mach/hurd/dl-sysdep.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c index 2f022ee90c..84fe966efe 100644 --- a/sysdeps/mach/hurd/dl-sysdep.c +++ b/sysdeps/mach/hurd/dl-sysdep.c @@ -699,7 +699,8 @@ void *weak_function __sbrk (intptr_t increment) { vm_address_t addr; - __vm_allocate (__mach_task_self (), &addr, increment, 1); + if (__vm_allocate (__mach_task_self (), &addr, increment, 1)) + return NULL; return (void *) addr; }
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