add patch for #33745 efistub breakage

0012-fix-saa7134.patch

@@ -1,37 +0,0 @@
---- a/drivers/media/pci/saa7134/saa7134-video.c	
-+++ a/drivers/media/pci/saa7134/saa7134-video.c	
-@@ -1243,6 +1243,7 @@ static int video_release(struct file *file)
- 		videobuf_streamoff(&dev->cap);
- 		res_free(dev, fh, RESOURCE_VIDEO);
- 		videobuf_mmap_free(&dev->cap);
-+		INIT_LIST_HEAD(&dev->cap.stream);
- 	}
- 	if (dev->cap.read_buf) {
- 		buffer_release(&dev->cap, dev->cap.read_buf);
-@@ -1254,6 +1255,7 @@ static int video_release(struct file *file)
- 		videobuf_stop(&dev->vbi);
- 		res_free(dev, fh, RESOURCE_VBI);
- 		videobuf_mmap_free(&dev->vbi);
-+		INIT_LIST_HEAD(&dev->vbi.stream);
- 	}
- 
- 	/* ts-capture will not work in planar mode, so turn it off Hac: 04.05*/
-@@ -1987,17 +1989,12 @@ int saa7134_streamoff(struct file *file, void *priv,
- 					enum v4l2_buf_type type)
- {
- 	struct saa7134_dev *dev = video_drvdata(file);
--	int err;
- 	int res = saa7134_resource(file);
- 
- 	if (res != RESOURCE_EMPRESS)
- 		pm_qos_remove_request(&dev->qos_request);
- 
--	err = videobuf_streamoff(saa7134_queue(file));
--	if (err < 0)
--		return err;
--	res_free(dev, priv, res);
--	return 0;
-+	return videobuf_streamoff(saa7134_queue(file));
- }
- EXPORT_SYMBOL_GPL(saa7134_streamoff);
-

0013-efistub-fix.patch

@@ -0,0 +1,177 @@
+From c7fb93ec51d462ec3540a729ba446663c26a0505 Mon Sep 17 00:00:00 2001
+From: Michael Brown <mbrown@fensystems.co.uk>
+Date: Thu, 10 Jul 2014 12:26:20 +0100
+Subject: x86/efi: Include a .bss section within the PE/COFF headers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The PE/COFF headers currently describe only the initialised-data
+portions of the image, and result in no space being allocated for the
+uninitialised-data portions.  Consequently, the EFI boot stub will end
+up overwriting unexpected areas of memory, with unpredictable results.
+
+Fix by including a .bss section in the PE/COFF headers (functionally
+equivalent to the init_size field in the bzImage header).
+
+Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
+Cc: Thomas Bächler <thomas@archlinux.org>
+Cc: Josh Boyer <jwboyer@fedoraproject.org>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Matt Fleming <matt.fleming@intel.com>
+
+diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
+index 84c2234..7a6d43a 100644
+--- a/arch/x86/boot/header.S
++++ b/arch/x86/boot/header.S
+@@ -91,10 +91,9 @@ bs_die:
+ 
+ 	.section ".bsdata", "a"
+ bugger_off_msg:
+-	.ascii	"Direct floppy boot is not supported. "
+-	.ascii	"Use a boot loader program instead.\r\n"
++	.ascii	"Use a boot loader.\r\n"
+ 	.ascii	"\n"
+-	.ascii	"Remove disk and press any key to reboot ...\r\n"
++	.ascii	"Remove disk and press any key to reboot...\r\n"
+ 	.byte	0
+ 
+ #ifdef CONFIG_EFI_STUB
+@@ -108,7 +107,7 @@ coff_header:
+ #else
+ 	.word	0x8664				# x86-64
+ #endif
+-	.word	3				# nr_sections
++	.word	4				# nr_sections
+ 	.long	0 				# TimeDateStamp
+ 	.long	0				# PointerToSymbolTable
+ 	.long	1				# NumberOfSymbols
+@@ -250,6 +249,25 @@ section_table:
+ 	.word	0				# NumberOfLineNumbers
+ 	.long	0x60500020			# Characteristics (section flags)
+ 
++	#
++	# The offset & size fields are filled in by build.c.
++	#
++	.ascii	".bss"
++	.byte	0
++	.byte	0
++	.byte	0
++	.byte	0
++	.long	0
++	.long	0x0
++	.long	0				# Size of initialized data
++						# on disk
++	.long	0x0
++	.long	0				# PointerToRelocations
++	.long	0				# PointerToLineNumbers
++	.word	0				# NumberOfRelocations
++	.word	0				# NumberOfLineNumbers
++	.long	0xc8000080			# Characteristics (section flags)
++
+ #endif /* CONFIG_EFI_STUB */
+ 
+ 	# Kernel attributes; used by setup.  This is part 1 of the
+diff --git a/arch/x86/boot/tools/build.c b/arch/x86/boot/tools/build.c
+index 1a2f212..a7661c4 100644
+--- a/arch/x86/boot/tools/build.c
++++ b/arch/x86/boot/tools/build.c
+@@ -143,7 +143,7 @@ static void usage(void)
+ 
+ #ifdef CONFIG_EFI_STUB
+ 
+-static void update_pecoff_section_header(char *section_name, u32 offset, u32 size)
++static void update_pecoff_section_header_fields(char *section_name, u32 vma, u32 size, u32 datasz, u32 offset)
+ {
+ 	unsigned int pe_header;
+ 	unsigned short num_sections;
+@@ -164,10 +164,10 @@ static void update_pecoff_section_header(char *section_name, u32 offset, u32 siz
+ 			put_unaligned_le32(size, section + 0x8);
+ 
+ 			/* section header vma field */
+-			put_unaligned_le32(offset, section + 0xc);
++			put_unaligned_le32(vma, section + 0xc);
+ 
+ 			/* section header 'size of initialised data' field */
+-			put_unaligned_le32(size, section + 0x10);
++			put_unaligned_le32(datasz, section + 0x10);
+ 
+ 			/* section header 'file offset' field */
+ 			put_unaligned_le32(offset, section + 0x14);
+@@ -179,6 +179,11 @@ static void update_pecoff_section_header(char *section_name, u32 offset, u32 siz
+ 	}
+ }
+ 
++static void update_pecoff_section_header(char *section_name, u32 offset, u32 size)
++{
++	update_pecoff_section_header_fields(section_name, offset, size, size, offset);
++}
++
+ static void update_pecoff_setup_and_reloc(unsigned int size)
+ {
+ 	u32 setup_offset = 0x200;
+@@ -203,9 +208,6 @@ static void update_pecoff_text(unsigned int text_start, unsigned int file_sz)
+ 
+ 	pe_header = get_unaligned_le32(&buf[0x3c]);
+ 
+-	/* Size of image */
+-	put_unaligned_le32(file_sz, &buf[pe_header + 0x50]);
+-
+ 	/*
+ 	 * Size of code: Subtract the size of the first sector (512 bytes)
+ 	 * which includes the header.
+@@ -220,6 +222,22 @@ static void update_pecoff_text(unsigned int text_start, unsigned int file_sz)
+ 	update_pecoff_section_header(".text", text_start, text_sz);
+ }
+ 
++static void update_pecoff_bss(unsigned int file_sz, unsigned int init_sz)
++{
++	unsigned int pe_header;
++	unsigned int bss_sz = init_sz - file_sz;
++
++	pe_header = get_unaligned_le32(&buf[0x3c]);
++
++	/* Size of uninitialized data */
++	put_unaligned_le32(bss_sz, &buf[pe_header + 0x24]);
++
++	/* Size of image */
++	put_unaligned_le32(init_sz, &buf[pe_header + 0x50]);
++
++	update_pecoff_section_header_fields(".bss", file_sz, bss_sz, 0, 0);
++}
++
+ static int reserve_pecoff_reloc_section(int c)
+ {
+ 	/* Reserve 0x20 bytes for .reloc section */
+@@ -259,6 +277,8 @@ static void efi_stub_entry_update(void)
+ static inline void update_pecoff_setup_and_reloc(unsigned int size) {}
+ static inline void update_pecoff_text(unsigned int text_start,
+ 				      unsigned int file_sz) {}
++static inline void update_pecoff_bss(unsigned int file_sz,
++				     unsigned int init_sz) {}
+ static inline void efi_stub_defaults(void) {}
+ static inline void efi_stub_entry_update(void) {}
+ 
+@@ -310,7 +330,7 @@ static void parse_zoffset(char *fname)
+ 
+ int main(int argc, char ** argv)
+ {
+-	unsigned int i, sz, setup_sectors;
++	unsigned int i, sz, setup_sectors, init_sz;
+ 	int c;
+ 	u32 sys_size;
+ 	struct stat sb;
+@@ -376,7 +396,9 @@ int main(int argc, char ** argv)
+ 	buf[0x1f1] = setup_sectors-1;
+ 	put_unaligned_le32(sys_size, &buf[0x1f4]);
+ 
+-	update_pecoff_text(setup_sectors * 512, sz + i + ((sys_size * 16) - sz));
++	update_pecoff_text(setup_sectors * 512, i + (sys_size * 16));
++	init_sz = get_unaligned_le32(&buf[0x260]);
++	update_pecoff_bss(i + (sys_size * 16), init_sz);
+ 
+ 	efi_stub_entry_update();
+ 
+-- 
+cgit v0.10.1
+

PKGBUILD

@@ -5,7 +5,7 @@ pkgbase=linux               # Build stock -ARCH kernel
 #pkgbase=linux-custom       # Build kernel with a different name
 _srcname=linux-3.15
 pkgver=3.15.5
-pkgrel=1
+pkgrel=2
 arch=('i686' 'x86_64')
 url="http://www.kernel.org/"
 license=('GPL2')
@@ -18,13 +18,15 @@ source=("https://www.kernel.org/pub/linux/kernel/v3.x/${_srcname}.tar.xz"
         # standard config files for mkinitcpio ramdisk
         'linux.preset'
         'change-default-console-loglevel.patch'
+        '0013-efistub-fix.patch'
         )
 sha256sums=('c3927e87be4040fa8aca1b58663dc0776aaf00485604ff88a623be2f3fb07794'
             '9b0d000e0bdec7a25ee6303afdab8d2af77439995876eadd6ce248e5c954037d'
             'ec593326ac4dad420b0b45a472ba3d6be2ce66b9b4d7cccf1453d02d5eb01b19'
             'cf10550fe511c534ec7f820f12c3345086b1ef64ac7f3b8b0d8d49bc3ea1f166'
             'f0d90e756f14533ee67afda280500511a62465b4f76adcc5effa95a40045179c'
-            'faced4eb4c47c4eb1a9ee8a5bf8a7c4b49d6b4d78efbe426e410730e6267d182')
+            'faced4eb4c47c4eb1a9ee8a5bf8a7c4b49d6b4d78efbe426e410730e6267d182'
+            '937dc895b4f5948381775a75bd198ed2f157a9f356da0ab5a5006f9f1dacde5c')
 
 _kernelname=${pkgbase#linux}
 
@@ -42,6 +44,10 @@ prepare() {
   # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)
   patch -p1 -i "${srcdir}/change-default-console-loglevel.patch"
 
+  # fix efistub hang #33745
+  # https://git.kernel.org/cgit/linux/kernel/git/mfleming/efi.git/patch/?id=c7fb93ec51d462ec3540a729ba446663c26a0505
+  patch -Np1 -i "${srcdir}/0013-efistub-fix.patch"
+
   if [ "${CARCH}" = "x86_64" ]; then
     cat "${srcdir}/config.x86_64" > ./.config
   else