Merge tag 'execve-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull execve updates from Kees Cook:
 "This removes a.out support globally; it has been disabled for a while
  now.

   - Remove a.out implementation globally (Eric W. Biederman)

   - Remove unused linux_binprm::taso member (Lukas Bulwahn)"

* tag 'execve-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  binfmt: remove taso from linux_binprm struct
  a.out: Remove the a.out implementation

16 files changed, 0 insertions, 108 deletions

diff --git a/arch/alpha/include/asm/a.out.h b/arch/alpha/include/asm/a.out.h
deleted file mode 100644
index d2346b7caff1..000000000000
--- a/arch/alpha/include/asm/a.out.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ALPHA_A_OUT_H__
-#define __ALPHA_A_OUT_H__
-
-#include <uapi/asm/a.out.h>
-
-
-/* Assume that start addresses below 4G belong to a TASO application.
-   Unfortunately, there is no proper bit in the exec header to check.
-   Worse, we have to notice the start address before swapping to use
-   /sbin/loader, which of course is _not_ a TASO application.  */
-#define SET_AOUT_PERSONALITY(BFPM, EX) \
-	set_personality (((BFPM->taso || EX.ah.entry < 0x100000000L \
-			   ? ADDR_LIMIT_32BIT : 0) | PER_OSF4))
-
-#endif /* __A_OUT_GNU_H__ */
diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile
index 5a74581bf0ee..6a274c0d53a2 100644
--- a/arch/alpha/kernel/Makefile
+++ b/arch/alpha/kernel/Makefile
@@ -47,10 +47,6 @@ else
 # Misc support
 obj-$(CONFIG_ALPHA_SRM)		+= srmcons.o
 
-ifdef CONFIG_BINFMT_AOUT
-obj-y	+= binfmt_loader.o
-endif
-
 # Core logic support
 obj-$(CONFIG_ALPHA_APECS)	+= core_apecs.o
 obj-$(CONFIG_ALPHA_CIA)		+= core_cia.o
diff --git a/arch/alpha/kernel/binfmt_loader.c b/arch/alpha/kernel/binfmt_loader.c
deleted file mode 100644
index e4be7a543ecf..000000000000
--- a/arch/alpha/kernel/binfmt_loader.c
+++ /dev/null
@@ -1,46 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/mm_types.h>
-#include <linux/binfmts.h>
-#include <linux/a.out.h>
-
-static int load_binary(struct linux_binprm *bprm)
-{
-	struct exec *eh = (struct exec *)bprm->buf;
-	unsigned long loader;
-	struct file *file;
-	int retval;
-
-	if (eh->fh.f_magic != 0x183 || (eh->fh.f_flags & 0x3000) != 0x3000)
-		return -ENOEXEC;
-
-	if (bprm->loader)
-		return -ENOEXEC;
-
-	loader = bprm->vma->vm_end - sizeof(void *);
-
-	file = open_exec("/sbin/loader");
-	retval = PTR_ERR(file);
-	if (IS_ERR(file))
-		return retval;
-
-	/* Remember if the application is TASO.  */
-	bprm->taso = eh->ah.entry < 0x100000000UL;
-
-	bprm->interpreter = file;
-	bprm->loader = loader;
-	return 0;
-}
-
-static struct linux_binfmt loader_format = {
-	.load_binary	= load_binary,
-};
-
-static int __init init_loader_binfmt(void)
-{
-	insert_binfmt(&loader_format);
-	return 0;
-}
-arch_initcall(init_loader_binfmt);
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index d257293401e2..b3ad8c44c971 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1278,45 +1278,15 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	return addr;
 }
 
-#ifdef CONFIG_OSF4_COMPAT
-/* Clear top 32 bits of iov_len in the user's buffer for
-   compatibility with old versions of OSF/1 where iov_len
-   was defined as int. */
-static int
-osf_fix_iov_len(const struct iovec __user *iov, unsigned long count)
-{
-	unsigned long i;
-
-	for (i = 0 ; i < count ; i++) {
-		int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1;
-
-		if (put_user(0, iov_len_high))
-			return -EFAULT;
-	}
-	return 0;
-}
-#endif
-
 SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
 		const struct iovec __user *, vector, unsigned long, count)
 {
-#ifdef CONFIG_OSF4_COMPAT
-	if (unlikely(personality(current->personality) == PER_OSF4))
-		if (osf_fix_iov_len(vector, count))
-			return -EFAULT;
-#endif
-
 	return sys_readv(fd, vector, count);
 }
 
 SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
 		const struct iovec __user *, vector, unsigned long, count)
 {
-#ifdef CONFIG_OSF4_COMPAT
-	if (unlikely(personality(current->personality) == PER_OSF4))
-		if (osf_fix_iov_len(vector, count))
-			return -EFAULT;
-#endif
 	return sys_writev(fd, vector, count);
 }
 
diff --git a/arch/arm/configs/badge4_defconfig b/arch/arm/configs/badge4_defconfig
index 506f3378da07..6908032fbce8 100644
--- a/arch/arm/configs/badge4_defconfig
+++ b/arch/arm/configs/badge4_defconfig
@@ -6,7 +6,6 @@ CONFIG_UNUSED_BOARD_FILES=y
 CONFIG_CMDLINE="init=/linuxrc root=/dev/mtdblock3"
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=m
 CONFIG_MODULES=y
 CONFIG_MODVERSIONS=y
 CONFIG_PARTITION_ADVANCED=y
diff --git a/arch/arm/configs/corgi_defconfig b/arch/arm/configs/corgi_defconfig
index 1f137f74050f..df84640f4f57 100644
--- a/arch/arm/configs/corgi_defconfig
+++ b/arch/arm/configs/corgi_defconfig
@@ -16,7 +16,6 @@ CONFIG_MACH_HUSKY=y
 CONFIG_UNUSED_BOARD_FILES=y
 CONFIG_CMDLINE="console=ttyS0,115200n8 console=tty1 noinitrd root=/dev/mtdblock2 rootfstype=jffs2   debug"
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=m
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
diff --git a/arch/arm/configs/ezx_defconfig b/arch/arm/configs/ezx_defconfig
index 1a41391d7367..cd9ccc4e4627 100644
--- a/arch/arm/configs/ezx_defconfig
+++ b/arch/arm/configs/ezx_defconfig
@@ -25,7 +25,6 @@ CONFIG_CPU_FREQ_GOV_ONDEMAND=m
 CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
 CONFIG_CPU_IDLE=y
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=m
 CONFIG_PM=y
 CONFIG_APM_EMULATION=y
 CONFIG_MODULES=y
diff --git a/arch/arm/configs/footbridge_defconfig b/arch/arm/configs/footbridge_defconfig
index 504070812ad0..b5b56f8dda5f 100644
--- a/arch/arm/configs/footbridge_defconfig
+++ b/arch/arm/configs/footbridge_defconfig
@@ -9,7 +9,6 @@ CONFIG_ARCH_EBSA285_HOST=y
 CONFIG_ARCH_NETWINDER=y
 CONFIG_FPE_NWFPE=y
 CONFIG_FPE_NWFPE_XP=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_MODULES=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_ACORN_PARTITION=y
diff --git a/arch/arm/configs/hackkit_defconfig b/arch/arm/configs/hackkit_defconfig
index b9327b2eacd3..398558c4ffa8 100644
--- a/arch/arm/configs/hackkit_defconfig
+++ b/arch/arm/configs/hackkit_defconfig
@@ -7,7 +7,6 @@ CONFIG_UNUSED_BOARD_FILES=y
 CONFIG_CMDLINE="console=ttySA0,115200 root=/dev/ram0 initrd=0xc0400000,8M init=/rootshell"
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_MODULES=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arm/configs/iop32x_defconfig b/arch/arm/configs/iop32x_defconfig
index c16e92cdfd00..19e30e790d35 100644
--- a/arch/arm/configs/iop32x_defconfig
+++ b/arch/arm/configs/iop32x_defconfig
@@ -12,7 +12,6 @@ CONFIG_MACH_N2100=y
 CONFIG_UNUSED_BOARD_FILES=y
 CONFIG_CMDLINE="console=ttyS0,115200 root=/dev/nfs ip=bootp cachepolicy=writealloc"
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_PARTITION_ADVANCED=y
diff --git a/arch/arm/configs/jornada720_defconfig b/arch/arm/configs/jornada720_defconfig
index 3dcf89d3e1f1..1a11ee6b3e24 100644
--- a/arch/arm/configs/jornada720_defconfig
+++ b/arch/arm/configs/jornada720_defconfig
@@ -6,7 +6,6 @@ CONFIG_SA1100_JORNADA720=y
 CONFIG_SA1100_JORNADA720_SSP=y
 CONFIG_UNUSED_BOARD_FILES=y
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_PM=y
 CONFIG_MODULES=y
 CONFIG_NET=y
diff --git a/arch/arm/configs/lart_defconfig b/arch/arm/configs/lart_defconfig
index 0c2f19d756c0..00583d64d2ea 100644
--- a/arch/arm/configs/lart_defconfig
+++ b/arch/arm/configs/lart_defconfig
@@ -8,7 +8,6 @@ CONFIG_CMDLINE="console=ttySA0,9600 root=/dev/ram"
 CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_PM=y
 CONFIG_MODULES=y
 CONFIG_NET=y
diff --git a/arch/arm/configs/neponset_defconfig b/arch/arm/configs/neponset_defconfig
index 907403529e30..2d16ddb0e7ff 100644
--- a/arch/arm/configs/neponset_defconfig
+++ b/arch/arm/configs/neponset_defconfig
@@ -9,7 +9,6 @@ CONFIG_ZBOOT_ROM_BSS=0xc1000000
 CONFIG_ZBOOT_ROM=y
 CONFIG_CMDLINE="console=ttySA0,38400n8 cpufreq=221200 rw root=/dev/mtdblock2 mtdparts=sa1100:512K(boot),1M(kernel),2560K(initrd),4M(root) load_ramdisk=1 prompt_ramdisk=0 mem=32M noinitrd initrd=0xc0800000,3M"
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_PM=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
diff --git a/arch/arm/configs/netwinder_defconfig b/arch/arm/configs/netwinder_defconfig
index cf7bbcf9d98a..7a14ea1faa65 100644
--- a/arch/arm/configs/netwinder_defconfig
+++ b/arch/arm/configs/netwinder_defconfig
@@ -5,7 +5,6 @@ CONFIG_ARCH_NETWINDER=y
 CONFIG_DEPRECATED_PARAM_STRUCT=y
 CONFIG_CMDLINE="root=0x801"
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arm/configs/rpc_defconfig b/arch/arm/configs/rpc_defconfig
index 16d74a1f027a..b667c9d4527c 100644
--- a/arch/arm/configs/rpc_defconfig
+++ b/arch/arm/configs/rpc_defconfig
@@ -7,7 +7,6 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_ARCH_RPC=y
 CONFIG_CPU_SA110=y
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_BSD_DISKLABEL=y
 CONFIG_SLAB=y
diff --git a/arch/arm/configs/spitz_defconfig b/arch/arm/configs/spitz_defconfig
index 1284a1d92ca3..66d74653f3fb 100644
--- a/arch/arm/configs/spitz_defconfig
+++ b/arch/arm/configs/spitz_defconfig
@@ -13,7 +13,6 @@ CONFIG_MACH_AKITA=y
 CONFIG_MACH_BORZOI=y
 CONFIG_CMDLINE="console=ttyS0,115200n8 console=tty1 noinitrd root=/dev/mtdblock2 rootfstype=jffs2   debug"
 CONFIG_FPE_NWFPE=y
-CONFIG_BINFMT_AOUT=m
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y