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| author | Li Qiong <liqiong@nfschina.com> | 2022-06-12 08:48:25 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-06-22 00:57:04 +0200 |
| commit | 1a5ca5e09811dec9472f50b98eeb3e3b2442d050 (patch) | |
| tree | 83ee7508ed4b92007f02157f233359d786cd1154 /kernel/rcu | |
| parent | rcutorture: Fix ksoftirqd boosting timing and iteration (diff) | |
| download | linux-1a5ca5e09811dec9472f50b98eeb3e3b2442d050.tar.xz linux-1a5ca5e09811dec9472f50b98eeb3e3b2442d050.zip | |
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')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 10 |
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); |