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author | Matteo Croce <mcroce@redhat.com> | 2019-05-20 23:49:38 +0200 |
---|---|---|
committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-05-21 16:55:20 +0200 |
commit | a195cefff49f60054998333e81ee95170ce8bf92 (patch) | |
tree | d2d64339ee4cec662fb39e76660f244661b12109 /arch/riscv/net | |
parent | f7c2d64bac1be2ff32f8e4f500c6e5429c1003e0 (diff) | |
download | linux-stable-a195cefff49f60054998333e81ee95170ce8bf92.tar.gz linux-stable-a195cefff49f60054998333e81ee95170ce8bf92.tar.bz2 linux-stable-a195cefff49f60054998333e81ee95170ce8bf92.zip |
samples, bpf: suppress compiler warning
GCC 9 fails to calculate the size of local constant strings and produces a
false positive:
samples/bpf/task_fd_query_user.c: In function ‘test_debug_fs_uprobe’:
samples/bpf/task_fd_query_user.c:242:67: warning: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size 215 [-Wformat-truncation=]
242 | snprintf(buf, sizeof(buf), "/sys/kernel/debug/tracing/events/%ss/%s/id",
| ^~
243 | event_type, event_alias);
| ~~~~~~~~~~~
samples/bpf/task_fd_query_user.c:242:2: note: ‘snprintf’ output between 45 and 300 bytes into a destination of size 256
242 | snprintf(buf, sizeof(buf), "/sys/kernel/debug/tracing/events/%ss/%s/id",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
243 | event_type, event_alias);
| ~~~~~~~~~~~~~~~~~~~~~~~~
Workaround this by lowering the buffer size to a reasonable value.
Related GCC Bugzilla: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83431
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'arch/riscv/net')
0 files changed, 0 insertions, 0 deletions