From b668970e610f186aa11f9fe7a7f7e35ae2c83476 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 17 Jan 2017 16:18:35 +0100 Subject: MIPS: Fix modversions kernelci.org reports tons of build warnings for linux-next: 35 WARNING: "memcpy" [fs/fat/msdos.ko] has no CRC! 35 WARNING: "__copy_user" [fs/fat/fat.ko] has no CRC! 32 WARNING: EXPORT symbol "memset" [vmlinux] version generation failed, symbol will not be versioned. 32 WARNING: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned. 32 WARNING: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned. 32 WARNING: EXPORT symbol "__strncpy_from_user_nocheck_asm" [vmlinux] version generation failed, symbol will not be versioned. The problem here is mainly the missing asm/asm-prototypes.h header file that is supposed to include the prototypes for each symbol that is exported from an assembler file. A second problem is that the asm/uaccess.h header contains some but not all the necessary declarations for the user access helpers. Finally, the vdso build is broken once we add asm/asm-prototypes.h, so we have to fix this at the same time by changing the vdso header. My approach here is to just not look for exported symbols in the VDSO assembler files, as the symbols cannot be exported anyway. Fixes: 576a2f0c5c6d ("MIPS: Export memcpy & memset functions alongside their definitions") Signed-off-by: Arnd Bergmann Cc: Al Viro Cc: James Hogan Cc: Maciej W. Rozycki Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/15038/ Patchwork: https://patchwork.linux-mips.org/patch/15069/ Signed-off-by: Ralf Baechle --- arch/mips/lib/strlen_user.S | 4 +++- arch/mips/lib/strncpy_user.S | 10 ++++++---- arch/mips/lib/strnlen_user.S | 8 ++++++-- 3 files changed, 15 insertions(+), 7 deletions(-) (limited to 'arch/mips/lib') diff --git a/arch/mips/lib/strlen_user.S b/arch/mips/lib/strlen_user.S index c9cb7e6c59a6..40be22625bc5 100644 --- a/arch/mips/lib/strlen_user.S +++ b/arch/mips/lib/strlen_user.S @@ -25,7 +25,6 @@ */ .macro __BUILD_STRLEN_ASM func LEAF(__strlen_\func\()_asm) -EXPORT_SYMBOL(__strlen_\func\()_asm) LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? and v0, a0 bnez v0, .Lfault\@ @@ -50,9 +49,11 @@ EXPORT_SYMBOL(__strlen_\func\()_asm) /* Set aliases */ .global __strlen_user_asm .set __strlen_user_asm, __strlen_kernel_asm +EXPORT_SYMBOL(__strlen_user_asm) #endif __BUILD_STRLEN_ASM kernel +EXPORT_SYMBOL(__strlen_kernel_asm) #ifdef CONFIG_EVA @@ -60,4 +61,5 @@ __BUILD_STRLEN_ASM kernel .set eva __BUILD_STRLEN_ASM user .set pop +EXPORT_SYMBOL(__strlen_user_asm) #endif diff --git a/arch/mips/lib/strncpy_user.S b/arch/mips/lib/strncpy_user.S index af745b1d04e3..5267ca800b84 100644 --- a/arch/mips/lib/strncpy_user.S +++ b/arch/mips/lib/strncpy_user.S @@ -31,13 +31,11 @@ .macro __BUILD_STRNCPY_ASM func LEAF(__strncpy_from_\func\()_asm) -EXPORT_SYMBOL(__strncpy_from_\func\()_asm) LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? and v0, a1 bnez v0, .Lfault\@ FEXPORT(__strncpy_from_\func\()_nocheck_asm) -EXPORT_SYMBOL(__strncpy_from_\func\()_nocheck_asm) move t0, zero move v1, a1 .ifeqs "\func","kernel" @@ -75,15 +73,19 @@ EXPORT_SYMBOL(__strncpy_from_\func\()_nocheck_asm) .global __strncpy_from_user_nocheck_asm .set __strncpy_from_user_asm, __strncpy_from_kernel_asm .set __strncpy_from_user_nocheck_asm, __strncpy_from_kernel_nocheck_asm - EXPORT_SYMBOL(__strncpy_from_user_asm) - EXPORT_SYMBOL(__strncpy_from_user_nocheck_asm) +EXPORT_SYMBOL(__strncpy_from_user_asm) +EXPORT_SYMBOL(__strncpy_from_user_nocheck_asm) #endif __BUILD_STRNCPY_ASM kernel +EXPORT_SYMBOL(__strncpy_from_kernel_asm) +EXPORT_SYMBOL(__strncpy_from_kernel_nocheck_asm) #ifdef CONFIG_EVA .set push .set eva __BUILD_STRNCPY_ASM user .set pop +EXPORT_SYMBOL(__strncpy_from_user_asm) +EXPORT_SYMBOL(__strncpy_from_user_nocheck_asm) #endif diff --git a/arch/mips/lib/strnlen_user.S b/arch/mips/lib/strnlen_user.S index 3ac38162d7f0..860ea99fd70c 100644 --- a/arch/mips/lib/strnlen_user.S +++ b/arch/mips/lib/strnlen_user.S @@ -28,13 +28,11 @@ */ .macro __BUILD_STRNLEN_ASM func LEAF(__strnlen_\func\()_asm) -EXPORT_SYMBOL(__strnlen_\func\()_asm) LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? and v0, a0 bnez v0, .Lfault\@ FEXPORT(__strnlen_\func\()_nocheck_asm) -EXPORT_SYMBOL(__strnlen_\func\()_nocheck_asm) move v0, a0 PTR_ADDU a1, a0 # stop pointer 1: @@ -73,9 +71,13 @@ EXPORT_SYMBOL(__strnlen_\func\()_nocheck_asm) .global __strnlen_user_nocheck_asm .set __strnlen_user_asm, __strnlen_kernel_asm .set __strnlen_user_nocheck_asm, __strnlen_kernel_nocheck_asm +EXPORT_SYMBOL(__strnlen_user_asm) +EXPORT_SYMBOL(__strnlen_user_nocheck_asm) #endif __BUILD_STRNLEN_ASM kernel +EXPORT_SYMBOL(__strnlen_kernel_asm) +EXPORT_SYMBOL(__strnlen_kernel_nocheck_asm) #ifdef CONFIG_EVA @@ -83,4 +85,6 @@ __BUILD_STRNLEN_ASM kernel .set eva __BUILD_STRNLEN_ASM user .set pop +EXPORT_SYMBOL(__strnlen_user_asm) +EXPORT_SYMBOL(__strnlen_user_nocheck_asm) #endif -- cgit v1.2.3-58-ga151