The patch titled
apply type enum zone_type fix
has been added to the -mm tree. Its filename is
apply-type-enum-zone_type-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: apply type enum zone_type fix
From: Paul Jackson <pj@xxxxxxx>
The variable 'k' was changed from 'int' to 'enum zone_type' (unsigned), and
it was being tested for being '>= 0' in a loop. Result was that the
set_mempolicy(MPOL_BIND) system call crashed the kernel in a near infinite
loop off into the weeds.
Signed-off-by: Paul Jackson <pj@xxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/mempolicy.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN mm/mempolicy.c~apply-type-enum-zone_type-fix mm/mempolicy.c
--- a/mm/mempolicy.c~apply-type-enum-zone_type-fix
+++ a/mm/mempolicy.c
@@ -149,12 +149,16 @@ static struct zonelist *bind_zonelist(no
lower zones etc. Avoid empty zones because the memory allocator
doesn't like them. If you implement node hot removal you
have to fix that. */
- for (k = policy_zone; k >= 0; k--) {
+ k = policy_zone;
+ while (1) {
for_each_node_mask(nd, *nodes) {
struct zone *z = &NODE_DATA(nd)->node_zones[k];
if (z->present_pages > 0)
zl->zones[num++] = z;
}
+ if (k == 0)
+ break;
+ k--;
}
zl->zones[num] = NULL;
return zl;
_
Patches currently in -mm which might be from pj@xxxxxxx are
origin.patch
ia64-panic-if-topology_init-kzalloc-fails.patch
apply-type-enum-zone_type-fix.patch
cpu-hotplug-compatible-alloc_percpu-fix.patch
cpu-hotplug-compatible-alloc_percpu-fix-2.patch
cpuset-oom-panic-fix.patch
oom-cpuset-hint.patch
sched-force-sbin-init-off-isolated-cpus.patch
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