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authorLi Qiong <liqiong@nfschina.com>2022-06-12 14:48:25 +0800
committerPaul E. McKenney <paulmck@kernel.org>2022-06-21 15:57:04 -0700
commit1a5ca5e09811dec9472f50b98eeb3e3b2442d050 (patch)
tree83ee7508ed4b92007f02157f233359d786cd1154 /kernel/rcu/rcutorture.c
parent3002153a91a9732a6d1d0bb95138593c7da15743 (diff)
rcutorture: Handle failure of memory allocation functions
This commit adds warnings for allocation failure during the mem_dump_obj() tests. It also terminates these tests upon such failure. Signed-off-by: Li Qiong <liqiong@nfschina.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/rcutorture.c')
-rw-r--r--kernel/rcu/rcutorture.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 6ba1cf8b3b71..2ba74498d36d 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1991,7 +1991,13 @@ static void rcu_torture_mem_dump_obj(void)
static int z;
kcp = kmem_cache_create("rcuscale", 136, 8, SLAB_STORE_USER, NULL);
+ if (WARN_ON_ONCE(!kcp))
+ return;
rhp = kmem_cache_alloc(kcp, GFP_KERNEL);
+ if (WARN_ON_ONCE(!rhp)) {
+ kmem_cache_destroy(kcp);
+ return;
+ }
pr_alert("mem_dump_obj() slab test: rcu_torture_stats = %px, &rhp = %px, rhp = %px, &z = %px\n", stats_task, &rhp, rhp, &z);
pr_alert("mem_dump_obj(ZERO_SIZE_PTR):");
mem_dump_obj(ZERO_SIZE_PTR);
@@ -2008,6 +2014,8 @@ static void rcu_torture_mem_dump_obj(void)
kmem_cache_free(kcp, rhp);
kmem_cache_destroy(kcp);
rhp = kmalloc(sizeof(*rhp), GFP_KERNEL);
+ if (WARN_ON_ONCE(!rhp))
+ return;
pr_alert("mem_dump_obj() kmalloc test: rcu_torture_stats = %px, &rhp = %px, rhp = %px\n", stats_task, &rhp, rhp);
pr_alert("mem_dump_obj(kmalloc %px):", rhp);
mem_dump_obj(rhp);
@@ -2015,6 +2023,8 @@ static void rcu_torture_mem_dump_obj(void)
mem_dump_obj(&rhp->func);
kfree(rhp);
rhp = vmalloc(4096);
+ if (WARN_ON_ONCE(!rhp))
+ return;
pr_alert("mem_dump_obj() vmalloc test: rcu_torture_stats = %px, &rhp = %px, rhp = %px\n", stats_task, &rhp, rhp);
pr_alert("mem_dump_obj(vmalloc %px):", rhp);
mem_dump_obj(rhp);