WARNING: line length of 83 exceeds 80 columns
#165: FILE: tools/testing/selftests/proc/proc-sysctl-readdir-churn.c:111:
+	ASSERT_EQ(list(self->dir, self->buf, SMALL_BUF, self->names, &self->n), 3);

WARNING: line length of 83 exceeds 80 columns
#191: FILE: tools/testing/selftests/proc/proc-sysctl-readdir-churn.c:137:
+	ASSERT_EQ(list(self->dir, self->buf, SMALL_BUF, self->names, &self->n), 3);

CHECK: From:/Signed-off-by: email comments mismatch: 'From: Christian Brauner <brauner@kernel.org>' != 'Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>'

total: 0 errors, 2 warnings, 1 checks, 164 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit a2292e22d66f ("selftests/proc: check a sysctl listing while entries come and go") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 2 warnings, 1 checks, 164 lines checked