From: "Siddha, Suresh B" <[EMAIL PROTECTED]>
On High end systems (1024 or so cpus) this can potentially cause stack
overflow. Fix the stack usage.
Signed-off-by: Suresh Siddha <[EMAIL PROTECTED]>
Cc: "David S. Miller" <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
net/core/utils.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff -puN net/core/utils.c~fix-potential-stack-overflow-in-net-core-utilsc
net/core/utils.c
--- a/net/core/utils.c~fix-potential-stack-overflow-in-net-core-utilsc
+++ a/net/core/utils.c
@@ -130,12 +130,13 @@ void __init net_random_init(void)
static int net_random_reseed(void)
{
int i;
- unsigned long seed[NR_CPUS];
+ unsigned long seed;
- get_random_bytes(seed, sizeof(seed));
for_each_possible_cpu(i) {
struct nrnd_state *state = &per_cpu(net_rand_state,i);
- __net_srandom(state, seed[i]);
+
+ get_random_bytes(&seed, sizeof(seed));
+ __net_srandom(state, seed);
}
return 0;
}
_
-
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