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authorThomas Richter <[email protected]>2024-01-18 13:24:45 +0100
committerHeiko Carstens <[email protected]>2024-02-09 13:58:13 +0100
commit3a5da4670dfad43e8e0b0c7135409c1f70230797 (patch)
tree711bf3cd101ba2841bc0965f7073c7296cb063bc
parent225d09d6e5f3870560665a1829d2db79330b4c58 (diff)
s390/pai_crypto: emit error on too many counters
When the device driver is initialized, it checks the number of possible counters. Should this number be too high, emit an error and return. Reported-by: Sumanth Korikkar <[email protected]> Signed-off-by: Thomas Richter <[email protected]> Acked-by: Sumanth Korikkar <[email protected]> Signed-off-by: Heiko Carstens <[email protected]>
-rw-r--r--arch/s390/kernel/perf_pai_crypto.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/s390/kernel/perf_pai_crypto.c b/arch/s390/kernel/perf_pai_crypto.c
index 522a5ea0a9f4..69639ff1c5e0 100644
--- a/arch/s390/kernel/perf_pai_crypto.c
+++ b/arch/s390/kernel/perf_pai_crypto.c
@@ -742,8 +742,10 @@ static int __init paicrypt_init(void)
paicrypt_cnt = ib.num_cc;
if (paicrypt_cnt == 0)
return 0;
- if (paicrypt_cnt >= PAI_CRYPTO_MAXCTR)
- paicrypt_cnt = PAI_CRYPTO_MAXCTR - 1;
+ if (paicrypt_cnt >= PAI_CRYPTO_MAXCTR) {
+ pr_err("Too many PMU pai_crypto counters %d\n", paicrypt_cnt);
+ return -1;
+ }
rc = attr_event_init(); /* Export known PAI crypto events */
if (rc) {