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parisc: support R_PARISC_SECREL32 relocation in modules

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The parisc kernel doesn't work with CONFIG_MODVERSIONS since the commit
71810db27c1c853b335675bee335d893bc3d324b. It can't load modules with the
error: "module unix: Unknown relocation: 41".

The commit changes __kcrctab from 64-bit valus to 32-bit values. The
assembler generates R_PARISC_SECREL32 secrel relocation for them and the
module loader doesn't support this relocation.

This patch adds the R_PARISC_SECREL32 relocation to the module loader.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org	# v4.10+
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Mikulas Patocka 2017-03-14 11:47:29 -04:00 committed by Helge Deller
parent 95422dec6b
commit 5f655322b1
1 changed files with 8 additions and 0 deletions
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8
arch/parisc/kernel/module.c
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@ -620,6 +620,10 @@ int apply_relocate_add(Elf_Shdr *sechdrs,
*/
*loc = fsel(val, addend);
break;
case R_PARISC_SECREL32:
/* 32-bit section relative address. */
*loc = fsel(val, addend);
break;
case R_PARISC_DPREL21L:
/* left 21 bit of relative address */
val = lrsel(val - dp, addend);
@ -807,6 +811,10 @@ int apply_relocate_add(Elf_Shdr *sechdrs,
*/
*loc = fsel(val, addend);
break;
case R_PARISC_SECREL32:
/* 32-bit section relative address. */
*loc = fsel(val, addend);
break;
case R_PARISC_FPTR64:
/* 64-bit function address */
if(in_local(me, (void *)(val + addend))) {