Date: Thu, 1 Nov 2018 20:42:54 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r340017 - stable/11/sys/arm64/arm64 Message-ID: <201811012042.wA1KgswL086253@repo.freebsd.org>
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Author: jhb Date: Thu Nov 1 20:42:54 2018 New Revision: 340017 URL: https://svnweb.freebsd.org/changeset/base/340017 Log: MFC 338813: Clear all of the VFP state in fill_fpregs(). Zero the entire FP register set structure returned for ptrace() if a thread hasn't used FP registers rather than leaking garbage in the fp_sr and fp_cr fields. Modified: stable/11/sys/arm64/arm64/machdep.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/arm64/arm64/machdep.c ============================================================================== --- stable/11/sys/arm64/arm64/machdep.c Thu Nov 1 18:34:26 2018 (r340016) +++ stable/11/sys/arm64/arm64/machdep.c Thu Nov 1 20:42:54 2018 (r340017) @@ -222,7 +222,7 @@ fill_fpregs(struct thread *td, struct fpreg *regs) regs->fp_sr = pcb->pcb_fpsr; } else #endif - memset(regs->fp_q, 0, sizeof(regs->fp_q)); + memset(regs, 0, sizeof(*regs)); return (0); }
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