From: Thomas Richter tmricht@linux.ibm.com
[ Upstream commit 225d09d6e5f3870560665a1829d2db79330b4c58 ]
When the device drivers are initialized, a sysfs directory is created. This contains many attributes which are allocated with kzalloc(). Should it fail, the memory for the attributes already created is freed in attr_event_free(). Its second parameter is number of attribute elements to delete. This parameter is off by one. When i. e. the 10th attribute fails to get created, attributes numbered 0 to 9 should be deleted. Currently only attributes numbered 0 to 8 are deleted.
Fixes: 39d62336f5c1 ("s390/pai: add support for cryptography counters") Reported-by: Sumanth Korikkar sumanthk@linux.ibm.com Signed-off-by: Thomas Richter tmricht@linux.ibm.com Acked-by: Sumanth Korikkar sumanthk@linux.ibm.com Signed-off-by: Heiko Carstens hca@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/s390/kernel/perf_pai_crypto.c | 2 +- arch/s390/kernel/perf_pai_ext.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/s390/kernel/perf_pai_crypto.c b/arch/s390/kernel/perf_pai_crypto.c index 39a91b00438a7..fc2dff1e4f796 100644 --- a/arch/s390/kernel/perf_pai_crypto.c +++ b/arch/s390/kernel/perf_pai_crypto.c @@ -715,7 +715,7 @@ static int __init attr_event_init(void) for (i = 0; i < ARRAY_SIZE(paicrypt_ctrnames); i++) { ret = attr_event_init_one(attrs, i); if (ret) { - attr_event_free(attrs, i - 1); + attr_event_free(attrs, i); return ret; } } diff --git a/arch/s390/kernel/perf_pai_ext.c b/arch/s390/kernel/perf_pai_ext.c index e7013a2e89605..32b467c300603 100644 --- a/arch/s390/kernel/perf_pai_ext.c +++ b/arch/s390/kernel/perf_pai_ext.c @@ -604,7 +604,7 @@ static int __init attr_event_init(void) for (i = 0; i < ARRAY_SIZE(paiext_ctrnames); i++) { ret = attr_event_init_one(attrs, i); if (ret) { - attr_event_free(attrs, i - 1); + attr_event_free(attrs, i); return ret; } }