WARNING: line length of 112 exceeds 80 columns
#27: FILE: tools/testing/selftests/bpf/progs/preempt_lock.c:8:
+extern int bpf_copy_from_user_str(void *dst, u32 dst__sz, const void *unsafe_ptr__ign, u64 flags) __weak __ksym;

WARNING: line length of 96 exceeds 80 columns
#37: FILE: tools/testing/selftests/bpf/progs/preempt_lock.c:119:
+__failure __msg("kernel func bpf_copy_from_user_str is sleepable within non-preemptible region")

total: 0 errors, 2 warnings, 0 checks, 26 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 2c30a186460b ("selftests/bpf: Expand coverage of preempt tests to sleepable kfunc") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 0 checks, 26 lines checked