Date: Thu, 22 Nov 2018 17:51:19 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r340772 - head/sys/amd64/ia32 Message-ID: <201811221751.wAMHpJ7K017719@repo.freebsd.org>
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Author: markj Date: Thu Nov 22 17:51:19 2018 New Revision: 340772 URL: https://svnweb.freebsd.org/changeset/base/340772 Log: Clear unused bytes in ia32_osendsig(). 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 Modified: head/sys/amd64/ia32/ia32_signal.c Modified: head/sys/amd64/ia32/ia32_signal.c ============================================================================== --- head/sys/amd64/ia32/ia32_signal.c Thu Nov 22 16:55:09 2018 (r340771) +++ head/sys/amd64/ia32/ia32_signal.c Thu Nov 22 17:51:19 2018 (r340772) @@ -364,12 +364,14 @@ ia32_osendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t /* 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;
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