5.4-stable patches

added patches:
	x86-boot-add-.text.-to-setup.ld.patch

diff --git a/queue-5.4/series b/queue-5.4/series
index d3be8c8ee867f1d54a9d9c3c63d4140aed01dfd8..6c2849c80edfcd29efc6cc0e11982af85d219d1c 100644 (file)
--- a/queue-5.4/series
+++ b/queue-5.4/series
@@ -34,3 +34,4 @@ spi-don-t-have-controller-clean-up-spi-device-before.patch
 spi-cleanup-on-failure-of-initial-setup.patch
 i2c-mpc-make-use-of-i2c_recover_bus.patch
 i2c-mpc-implement-erratum-a-004447-workaround.patch
+x86-boot-add-.text.-to-setup.ld.patch

diff --git a/queue-5.4/x86-boot-add-.text.-to-setup.ld.patch b/queue-5.4/x86-boot-add-.text.-to-setup.ld.patch
new file mode 100644 (file)
index 0000000..0853c9a
--- /dev/null
+++ b/queue-5.4/x86-boot-add-.text.-to-setup.ld.patch
@@ -0,0 +1,94 @@
+From 2e7a858ba843d2e6ceab1ba996805411de51b340 Mon Sep 17 00:00:00 2001
+From: Arvind Sankar <nivedita@alum.mit.edu>
+Date: Fri, 31 Jul 2020 16:07:48 -0700
+Subject: x86/boot: Add .text.* to setup.ld
+
+From: Arvind Sankar <nivedita@alum.mit.edu>
+
+commit 2e7a858ba843d2e6ceab1ba996805411de51b340 upstream.
+
+GCC puts the main function into .text.startup when compiled with -Os (or
+-O2). This results in arch/x86/boot/main.c having a .text.startup
+section which is currently not included explicitly in the linker script
+setup.ld in the same directory.
+
+The BFD linker places this orphan section immediately after .text, so
+this still works. However, LLD git, since [1], is choosing to place it
+immediately after the .bstext section instead (this is the first code
+section). This plays havoc with the section layout that setup.elf
+requires to create the setup header, for eg on 64-bit:
+
+    LD      arch/x86/boot/setup.elf
+  ld.lld: error: section .text.startup file range overlaps with .header
+  >>> .text.startup range is [0x200040, 0x2001FE]
+  >>> .header range is [0x2001EF, 0x20026B]
+
+  ld.lld: error: section .header file range overlaps with .bsdata
+  >>> .header range is [0x2001EF, 0x20026B]
+  >>> .bsdata range is [0x2001FF, 0x200398]
+
+  ld.lld: error: section .bsdata file range overlaps with .entrytext
+  >>> .bsdata range is [0x2001FF, 0x200398]
+  >>> .entrytext range is [0x20026C, 0x2002D3]
+
+  ld.lld: error: section .text.startup virtual address range overlaps
+  with .header
+  >>> .text.startup range is [0x40, 0x1FE]
+  >>> .header range is [0x1EF, 0x26B]
+
+  ld.lld: error: section .header virtual address range overlaps with
+  .bsdata
+  >>> .header range is [0x1EF, 0x26B]
+  >>> .bsdata range is [0x1FF, 0x398]
+
+  ld.lld: error: section .bsdata virtual address range overlaps with
+  .entrytext
+  >>> .bsdata range is [0x1FF, 0x398]
+  >>> .entrytext range is [0x26C, 0x2D3]
+
+  ld.lld: error: section .text.startup load address range overlaps with
+  .header
+  >>> .text.startup range is [0x40, 0x1FE]
+  >>> .header range is [0x1EF, 0x26B]
+
+  ld.lld: error: section .header load address range overlaps with
+  .bsdata
+  >>> .header range is [0x1EF, 0x26B]
+  >>> .bsdata range is [0x1FF, 0x398]
+
+  ld.lld: error: section .bsdata load address range overlaps with
+  .entrytext
+  >>> .bsdata range is [0x1FF, 0x398]
+  >>> .entrytext range is [0x26C, 0x2D3]
+
+Add .text.* to the .text output section to fix this, and also prevent
+any future surprises if the compiler decides to create other such
+sections.
+
+[1] https://reviews.llvm.org/D75225
+
+Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
+Signed-off-by: Kees Cook <keescook@chromium.org>
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Tested-by: Nick Desaulniers <ndesaulniers@google.com>
+Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
+Reviewed-by: Kees Cook <keescook@chromium.org>
+Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
+Reviewed-by: Fangrui Song <maskray@google.com>
+Link: https://lore.kernel.org/r/20200731230820.1742553-5-keescook@chromium.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/x86/boot/setup.ld |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/x86/boot/setup.ld
++++ b/arch/x86/boot/setup.ld
+@@ -20,7 +20,7 @@ SECTIONS
+       .initdata       : { *(.initdata) }
+       __end_init = .;
+ 
+-      .text           : { *(.text) }
++      .text           : { *(.text .text.*) }
+       .text32         : { *(.text32) }
+ 
+       . = ALIGN(16);