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cd69d30676
* gnu/packages/patches/gnumach-div0.patch: New patch * gnu/packages/hurd.scm (gnumach): Add it. * gnu/local.mk (dist_patch_DATA): Register patch. Change-Id: If2c096209a23619cafd55855e519674076c6a043 Signed-off-by: Ludovic Courtès <ludo@gnu.org>
51 lines
1.4 KiB
Diff
51 lines
1.4 KiB
Diff
Taken from
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https://cgit.git.savannah.gnu.org/cgit/hurd/gnumach.git/commit/?id=eec7037c885f6e54bf8f22d421d6abc55a2cd667
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From eec7037c885f6e54bf8f22d421d6abc55a2cd667 Mon Sep 17 00:00:00 2001
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From: Samuel Thibault <samuel.thibault@ens-lyon.org>
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Date: Wed, 27 Aug 2025 02:34:50 +0200
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Subject: [PATCH] idt_inittab: Fix terminator entry
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Better fill a complete entry, which is always two pointers, both in
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MACH_PV_DESCRIPTORS and !MACH_PV_DESCRIPTORS case.
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For the x86_64 case, only half a pointer was actually recorded, leaving
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to garbage getting registered in the idt. This was noticed by division
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by zero getting double-faults.
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Thanks Pellescours for the initial investigation!
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---
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i386/i386/idt_inittab.S | 2 --
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x86_64/idt_inittab.S | 5 +----
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2 files changed, 1 insertion(+), 6 deletions(-)
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diff --git a/i386/i386/idt_inittab.S b/i386/i386/idt_inittab.S
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index fc80e21b..a946fece 100644
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--- a/i386/i386/idt_inittab.S
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+++ b/i386/i386/idt_inittab.S
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@@ -134,7 +134,5 @@ EXCEPTION(0x1f,t_trap_1f)
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/* Terminator */
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.data 2
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.long 0
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-#ifdef MACH_PV_DESCRIPTORS
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.long 0
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-#endif /* MACH_PV_DESCRIPTORS */
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diff --git a/x86_64/idt_inittab.S b/x86_64/idt_inittab.S
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index 3a205ae4..cd5f5d22 100644
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--- a/x86_64/idt_inittab.S
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+++ b/x86_64/idt_inittab.S
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@@ -140,9 +140,6 @@ EXCEPTION(0x1f,t_trap_1f)
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/* Terminator */
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.data 2
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- .long 0
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-#ifdef MACH_PV_DESCRIPTORS
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- .long 0
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.quad 0
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-#endif /* MACH_PV_DESCRIPTORS */
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+ .quad 0
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--
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2.51.0
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