diff options
| author | Thomas Richter <tmricht@linux.ibm.com> | 2024-01-18 13:24:45 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-02-09 13:58:13 +0100 |
| commit | 3a5da4670dfad43e8e0b0c7135409c1f70230797 (patch) | |
| tree | 711bf3cd101ba2841bc0965f7073c7296cb063bc /arch | |
| parent | s390/pai: fix attr_event_free upper limit for pai device drivers (diff) | |
| download | linux-3a5da4670dfad43e8e0b0c7135409c1f70230797.tar.xz linux-3a5da4670dfad43e8e0b0c7135409c1f70230797.zip | |
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 <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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/perf_pai_crypto.c | 6 |
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) { |