Date: Sat, 10 Apr 2021 01:25:14 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: d50adfec9ee7 - main - amd64: clear debug registers on execing 32bit native binary Message-ID: <202104100125.13A1PEfD043325@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=d50adfec9ee73e88e8d365525f1acef2c1db798a commit d50adfec9ee73e88e8d365525f1acef2c1db798a Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-04-09 23:23:54 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-04-10 01:25:02 +0000 amd64: clear debug registers on execing 32bit native binary Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29687 --- sys/amd64/ia32/ia32_signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/amd64/ia32/ia32_signal.c b/sys/amd64/ia32/ia32_signal.c index 51dd1f38090f..c114cf1d240a 100644 --- a/sys/amd64/ia32/ia32_signal.c +++ b/sys/amd64/ia32/ia32_signal.c @@ -968,6 +968,8 @@ ia32_setregs(struct thread *td, struct image_params *imgp, uintptr_t stack) regs->tf_gs = _ugssel; regs->tf_flags = TF_HASSEGS; + x86_clear_dbregs(pcb); + fpstate_drop(td); /* Return via doreti so that we can change to a different %cs */
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