* [TRIVIAL] ppc64 shmget() translation bugfix
@ 2004-04-30 5:33 David Gibson
0 siblings, 0 replies; only message in thread
From: David Gibson @ 2004-04-30 5:33 UTC (permalink / raw)
To: Linus Torvalds, Andrew Morton
Cc: Anton Blanchard, Paul Mackerras, linux-kernel, linuxppc64-dev,
trivial
Linus, please apply:
The 32->64 bit syscall translation layer on ppc64 incorrectly
sign-extends rather than zero-extending the second parameter to
shmget(), which should be a size_t. This means that it is impossible
to shmget() more 2GB or more from a 32-bit process.
Index: working-2.6/arch/ppc64/kernel/sys_ppc32.c
===================================================================
--- working-2.6.orig/arch/ppc64/kernel/sys_ppc32.c 2004-03-31 11:10:09.000000000 +1000
+++ working-2.6/arch/ppc64/kernel/sys_ppc32.c 2004-04-30 15:18:51.421878128 +1000
@@ -1666,7 +1666,7 @@
err = sys_shmdt((char *)AA(ptr));
break;
case SHMGET:
- err = sys_shmget(first, second, third);
+ err = sys_shmget(first, second_parm, third);
break;
case SHMCTL:
err = do_sys32_shmctl(first, second, (void *)AA(ptr));
--
David Gibson | For every complex problem there is a
david AT gibson.dropbear.id.au | solution which is simple, neat and
| wrong.
http://www.ozlabs.org/people/dgibson
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