Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] drm: nouveau: use correct string length | Date | Mon, 4 Dec 2017 15:54:26 +0100 |
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gcc-8 reports
drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c: In function 'nvkm_perfmon_mthd': include/linux/string.h:265:9: error: '__builtin_strncpy' specified bound 64 equals destination size [-Werror=stringop-truncation]
We need one less byte or call strlcpy() to make it a nul-terminated string.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c index dde89a4a0f5b..53859b6254d6 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c @@ -462,7 +462,7 @@ nvkm_perfmon_mthd_query_domain(struct nvkm_perfmon *perfmon, args->v0.id = di; args->v0.signal_nr = nvkm_perfdom_count_perfsig(dom); - strncpy(args->v0.name, dom->name, sizeof(args->v0.name)); + strncpy(args->v0.name, dom->name, sizeof(args->v0.name) - 1); /* Currently only global counters (PCOUNTER) are implemented * but this will be different for local counters (MP). */ @@ -514,7 +514,7 @@ nvkm_perfmon_mthd_query_signal(struct nvkm_perfmon *perfmon, "/%s/%02x", dom->name, si); } else { strncpy(args->v0.name, sig->name, - sizeof(args->v0.name)); + sizeof(args->v0.name) - 1); } args->v0.signal = si; @@ -572,7 +572,7 @@ nvkm_perfmon_mthd_query_source(struct nvkm_perfmon *perfmon, args->v0.source = sig->source[si]; args->v0.mask = src->mask; - strncpy(args->v0.name, src->name, sizeof(args->v0.name)); + strncpy(args->v0.name, src->name, sizeof(args->v0.name) - 1); } if (++si < source_nr) { -- 2.9.0
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