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Clear unused bytes in ia32_osendsig().

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Mirror the fix for the native i386 implementation from r218327.  This
code is compiled only when the non-default COMPAT_43 option is
configured.

Reported by:	Ilja Van Sprundel <ivansprundel@ioactive.com>
Reviewed by:	kib
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D18298
This commit is contained in:
markj 2018-11-22 17:51:19 +00:00
parent 1a89b15463
commit fbbdea9acc
1 changed files with 2 additions and 0 deletions
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2
sys/amd64/ia32/ia32_signal.c
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@ -364,12 +364,14 @@ ia32_osendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
/* Build the argument list for the signal handler. */
sf.sf_signum = sig;
sf.sf_scp = (register_t)&fp->sf_siginfo.si_sc;
bzero(&sf.sf_siginfo, sizeof(sf.sf_siginfo));
if (SIGISMEMBER(psp->ps_siginfo, sig)) {
/* Signal handler installed with SA_SIGINFO. */
sf.sf_arg2 = (register_t)&fp->sf_siginfo;
sf.sf_siginfo.si_signo = sig;
sf.sf_siginfo.si_code = ksi->ksi_code;
sf.sf_ah = (uintptr_t)catcher;
sf.sf_addr = 0;
} else {
/* Old FreeBSD-style arguments. */
sf.sf_arg2 = ksi->ksi_code;