From: Andreas Schwab Date: Fri, 5 Feb 2016 18:50:03 +0000 (+0100) Subject: powerpc: Fix dedotify for binutils >= 2.26 X-Git-Tag: v4.1.22~149 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c99016a364ab695755e3a66c4dbfb53b9c07a0f;p=thirdparty%2Fkernel%2Fstable.git powerpc: Fix dedotify for binutils >= 2.26 [ Upstream commit f15838e9cac8f78f0cc506529bb9d3b9fa589c1f ] Since binutils 2.26 BFD is doing suffix merging on STRTAB sections. But dedotify modifies the symbol names in place, which can also modify unrelated symbols with a name that matches a suffix of a dotted name. To remove the leading dot of a symbol name we can just increment the pointer into the STRTAB section instead. Backport to all stables to avoid breakage when people update their binutils - mpe. Cc: stable@vger.kernel.org Signed-off-by: Andreas Schwab Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c index 59663af9315fc..e4f7d4eed20ce 100644 --- a/arch/powerpc/kernel/module_64.c +++ b/arch/powerpc/kernel/module_64.c @@ -335,7 +335,7 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab) if (syms[i].st_shndx == SHN_UNDEF) { char *name = strtab + syms[i].st_name; if (name[0] == '.') - memmove(name, name+1, strlen(name)); + syms[i].st_name++; } } }