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s390/diag: fix display of diagnose call statistics

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commit 6c7c851f1b upstream.

Show the full diag statistic table and not just parts of it.

The issue surfaced in a KVM guest with a number of vcpus
defined smaller than NR_DIAG_STAT.

Fixes: 1ec2772e0c ("s390/diag: add a statistic for diagnose calls")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Mueller <mimu@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Mueller
2020-03-03 16:42:01 +01:00
committed by Greg Kroah-Hartman
parent 453fb8b20d
commit efb9e9f723
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kernel/diag.c
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@ -84,7 +84,7 @@ static int show_diag_stat(struct seq_file *m, void *v)
static void *show_diag_stat_start(struct seq_file *m, loff_t *pos) static void *show_diag_stat_start(struct seq_file *m, loff_t *pos)
{ {
return *pos <= nr_cpu_ids ? (void *)((unsigned long) *pos + 1) : NULL; return *pos <= NR_DIAG_STAT ? (void *)((unsigned long) *pos + 1) : NULL;
} }
static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos) static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos)