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kyber: fix wrong strlcpy() size in trace_kyber_latency() 

When copying to the latency type, we should be passing LATENCY_TYPE_LEN,
not DOMAIN_LEN (this isn't a problem in practice because we only pass
"total" or "I/O"). Fix it by changing all of the strlcpy() calls to use
sizeof().

Fixes: 6c3b7af1c9 ("kyber: add tracepoints")
Reported-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Tested-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
hifive-unleashed-5.1
Omar Sandoval 2018-11-12 00:08:46 -08:00 committed by Jens Axboe
parent de7b75d82f
commit 18e962ac07
1 changed files with 4 additions and 4 deletions
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8
include/trace/events/kyber.h
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@ -31,8 +31,8 @@ TRACE_EVENT(kyber_latency,
TP_fast_assign(
__entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
strlcpy(__entry->domain, domain, DOMAIN_LEN);
strlcpy(__entry->type, type, DOMAIN_LEN);
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
strlcpy(__entry->type, type, sizeof(__entry->type));
__entry->percentile = percentile;
__entry->numerator = numerator;
__entry->denominator = denominator;
@ -60,7 +60,7 @@ TRACE_EVENT(kyber_adjust,
TP_fast_assign(
__entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
strlcpy(__entry->domain, domain, DOMAIN_LEN);
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
__entry->depth = depth;
),
@ -82,7 +82,7 @@ TRACE_EVENT(kyber_throttled,
TP_fast_assign(
__entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
strlcpy(__entry->domain, domain, DOMAIN_LEN);
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
),
TP_printk("%d,%d %s", MAJOR(__entry->dev), MINOR(__entry->dev),