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Diffstat (limited to 'meta/recipes-kernel/lttng/lttng-modules/0001-fix-strncpy-equals-destination-size-warning.patch')
| -rw-r--r-- | meta/recipes-kernel/lttng/lttng-modules/0001-fix-strncpy-equals-destination-size-warning.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/meta/recipes-kernel/lttng/lttng-modules/0001-fix-strncpy-equals-destination-size-warning.patch b/meta/recipes-kernel/lttng/lttng-modules/0001-fix-strncpy-equals-destination-size-warning.patch new file mode 100644 index 0000000000..6f82488772 --- /dev/null +++ b/meta/recipes-kernel/lttng/lttng-modules/0001-fix-strncpy-equals-destination-size-warning.patch @@ -0,0 +1,42 @@ +From cb78974394a9af865e1d2d606e838dbec0de80e8 Mon Sep 17 00:00:00 2001 +From: Michael Jeanson <mjeanson@efficios.com> +Date: Mon, 5 Oct 2020 15:31:42 -0400 +Subject: [PATCH 01/16] fix: strncpy equals destination size warning +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Some versions of GCC when called with -Wstringop-truncation will warn +when doing a copy of the same size as the destination buffer with +strncpy : + + ‘strncpy’ specified bound 256 equals destination size [-Werror=stringop-truncation] + +Since we unconditionally write '\0' in the last byte, reduce the copy +size by one. + +Upstream-Status: Backport + +Change-Id: Idb907c9550817a06fc0dffc489740f63d440e7d4 +Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> +Signed-off-by: Michael Jeanson <mjeanson@efficios.com> +--- + lttng-syscalls.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/lttng-syscalls.c b/lttng-syscalls.c +index 49c0d81b..b43dd570 100644 +--- a/lttng-syscalls.c ++++ b/lttng-syscalls.c +@@ -719,7 +719,7 @@ int fill_table(const struct trace_syscall_entry *table, size_t table_len, + ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT; + break; + } +- strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN); ++ strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN - 1); + ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0'; + ev.instrumentation = LTTNG_KERNEL_SYSCALL; + chan_table[i] = _lttng_event_create(chan, &ev, filter, +-- +2.25.1 + |