Messages in this thread Patch in this message | | | Date | Sat, 17 Mar 2018 02:21:47 +0300 | From | Alexey Dobriyan <> | Subject | [PATCH -mm] proc: fixup test for read |
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/proc/kmsg can and will block if read under root.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> ---
tools/testing/selftests/proc/read.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/proc/read.c +++ b/tools/testing/selftests/proc/read.c @@ -54,7 +54,8 @@ static void f_reg(DIR *d, const char *filename) int fd; ssize_t rv; - fd = openat(dirfd(d), filename, O_RDONLY); + /* read from /proc/kmsg can block */ + fd = openat(dirfd(d), filename, O_RDONLY|O_NONBLOCK); if (fd == -1) return; rv = read(fd, buf, sizeof(buf));
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