rpms/kernel/F-8 linux-2.6-x86-asmlinkage_protect-sys_io_getevents.patch, NONE, 1.1 kernel.spec, 1.425, 1.426
Chuck Ebbert (cebbert)
fedora-extras-commits at redhat.com
Fri Apr 11 21:46:42 UTC 2008
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Author: cebbert
Update of /cvs/pkgs/rpms/kernel/F-8
In directory cvs-int.fedora.redhat.com:/tmp/cvs-serv30309
Modified Files:
kernel.spec
Added Files:
linux-2.6-x86-asmlinkage_protect-sys_io_getevents.patch
Log Message:
* Fri Apr 11 2008 Chuck Ebbert <cebbert at redhat.com> 2.6.24.4-80
- Prevent sys_io_getevents syscall from clobbering the esi register on x86.
(F9#427707)
linux-2.6-x86-asmlinkage_protect-sys_io_getevents.patch:
--- NEW FILE linux-2.6-x86-asmlinkage_protect-sys_io_getevents.patch ---
Minimal patch for BZ 427707 which also affects F8.
>From upstream commits:
54a015104136974262afa4b8ddd943ea70dec8a2
598af051a79d05b751fe793f1fe09fcf74763e02
---
fs/aio.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- linux-2.6.24.noarch.orig/fs/aio.c
+++ linux-2.6.24.noarch/fs/aio.c
@@ -1771,6 +1771,14 @@ asmlinkage long sys_io_getevents(aio_con
struct io_event __user *events,
struct timespec __user *timeout)
{
+#define asmlinkage_protect(n, ret, args...) \
+ __asmlinkage_protect##n(ret, ##args)
+#define __asmlinkage_protect_n(ret, args...) \
+ __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
+#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
+ __asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
+ "g" (arg4), "g" (arg5))
+
struct kioctx *ioctx = lookup_ioctx(ctx_id);
long ret = -EINVAL;
@@ -1780,6 +1788,9 @@ asmlinkage long sys_io_getevents(aio_con
put_ioctx(ioctx);
}
+#ifdef CONFIG_X86_32
+ asmlinkage_protect(5, ret, ctx_id, min_nr, nr, events, timeout);
+#endif
return ret;
}
Index: kernel.spec
===================================================================
RCS file: /cvs/pkgs/rpms/kernel/F-8/kernel.spec,v
retrieving revision 1.425
retrieving revision 1.426
diff -u -r1.425 -r1.426
--- kernel.spec 9 Apr 2008 21:17:41 -0000 1.425
+++ kernel.spec 11 Apr 2008 21:45:53 -0000 1.426
@@ -589,6 +589,7 @@
Patch75: linux-2.6-x86-debug-boot.patch
# Patch76: linux-2.6-x86-dont-use-p6-nops.patch
Patch77: linux-2.6-x86-clear-df-for-signals.patch
+Patch78: linux-2.6-x86-asmlinkage_protect-sys_io_getevents.patch
Patch86: linux-2.6-alsa-support-sis7019.patch
Patch87: linux-2.6-alsa-hda-stac-dmic.patch
@@ -1115,6 +1116,8 @@
# clear DF before calling signal handlers
# applied on top of utrace
ApplyPatch linux-2.6-x86-clear-df-for-signals.patch
+# prevent clobber of esi on x86 by sys_io_getevents() syscall
+ApplyPatch linux-2.6-x86-asmlinkage_protect-sys_io_getevents.patch
#
# PowerPC
@@ -2016,6 +2019,10 @@
%changelog
+* Fri Apr 11 2008 Chuck Ebbert <cebbert at redhat.com> 2.6.24.4-80
+- Prevent sys_io_getevents syscall from clobbering the esi register on x86.
+ (F9#427707)
+
* Wed Apr 09 2008 John W. Linville <linville at redhat.com> 2.6.24.4-79
- rt61pci: rt61pci_beacon_update do not free skb twice
- ssb-pcicore: Fix IRQ TPS flag handling
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