| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 030/122] xtensa: re-wire umount syscall to sys_oldumount | Date | Wed, 19 Nov 2014 12:51:20 -0800 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Max Filippov <jcmvbkbc@gmail.com>
commit 2651cc6974d47fc43bef1cd8cd26966e4f5ba306 upstream.
Userspace actually passes single parameter (path name) to the umount syscall, so new umount just fails. Fix it by requesting old umount syscall implementation and re-wiring umount to it.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/xtensa/include/uapi/asm/unistd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/xtensa/include/uapi/asm/unistd.h +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -384,7 +384,8 @@ __SYSCALL(174, sys_chroot, 1) #define __NR_pivot_root 175 __SYSCALL(175, sys_pivot_root, 2) #define __NR_umount 176 -__SYSCALL(176, sys_umount, 2) +__SYSCALL(176, sys_oldumount, 1) +#define __ARCH_WANT_SYS_OLDUMOUNT #define __NR_swapoff 177 __SYSCALL(177, sys_swapoff, 1) #define __NR_sync 178
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