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-rw-r--r--kernel/bpf/bloom_filter.c13
-rw-r--r--kernel/bpf/verifier.c3
-rw-r--r--kernel/dma/swiotlb.c1
-rw-r--r--kernel/workqueue.c8
4 files changed, 21 insertions, 4 deletions
diff --git a/kernel/bpf/bloom_filter.c b/kernel/bpf/bloom_filter.c
index addf3dd57b..35e1ddca74 100644
--- a/kernel/bpf/bloom_filter.c
+++ b/kernel/bpf/bloom_filter.c
@@ -80,6 +80,18 @@ static int bloom_map_get_next_key(struct bpf_map *map, void *key, void *next_key
return -EOPNOTSUPP;
}
+/* Called from syscall */
+static int bloom_map_alloc_check(union bpf_attr *attr)
+{
+ if (attr->value_size > KMALLOC_MAX_SIZE)
+ /* if value_size is bigger, the user space won't be able to
+ * access the elements.
+ */
+ return -E2BIG;
+
+ return 0;
+}
+
static struct bpf_map *bloom_map_alloc(union bpf_attr *attr)
{
u32 bitset_bytes, bitset_mask, nr_hash_funcs, nr_bits;
@@ -191,6 +203,7 @@ static u64 bloom_map_mem_usage(const struct bpf_map *map)
BTF_ID_LIST_SINGLE(bpf_bloom_map_btf_ids, struct, bpf_bloom_filter)
const struct bpf_map_ops bloom_filter_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
+ .map_alloc_check = bloom_map_alloc_check,
.map_alloc = bloom_map_alloc,
.map_free = bloom_map_free,
.map_get_next_key = bloom_map_get_next_key,
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 19e575e6b7..11bc3af33f 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -18040,8 +18040,7 @@ static int resolve_pseudo_ldimm64(struct bpf_verifier_env *env)
f = fdget(fd);
map = __bpf_map_get(f);
if (IS_ERR(map)) {
- verbose(env, "fd %d is not pointing to valid bpf_map\n",
- insn[0].imm);
+ verbose(env, "fd %d is not pointing to valid bpf_map\n", fd);
return PTR_ERR(map);
}
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 877c4b8fad..1955b42f42 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -1717,6 +1717,7 @@ static int rmem_swiotlb_device_init(struct reserved_mem *rmem,
mem->for_alloc = true;
#ifdef CONFIG_SWIOTLB_DYNAMIC
spin_lock_init(&mem->lock);
+ INIT_LIST_HEAD_RCU(&mem->pools);
#endif
add_mem_pool(mem, pool);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 7b482a26d7..223aa99bb7 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1141,8 +1141,12 @@ static bool kick_pool(struct worker_pool *pool)
!cpumask_test_cpu(p->wake_cpu, pool->attrs->__pod_cpumask)) {
struct work_struct *work = list_first_entry(&pool->worklist,
struct work_struct, entry);
- p->wake_cpu = cpumask_any_distribute(pool->attrs->__pod_cpumask);
- get_work_pwq(work)->stats[PWQ_STAT_REPATRIATED]++;
+ int wake_cpu = cpumask_any_and_distribute(pool->attrs->__pod_cpumask,
+ cpu_online_mask);
+ if (wake_cpu < nr_cpu_ids) {
+ p->wake_cpu = wake_cpu;
+ get_work_pwq(work)->stats[PWQ_STAT_REPATRIATED]++;
+ }
}
#endif
wake_up_process(p);