WARNING: printk() should include KERN_<LEVEL> facility level
#166: FILE: net/core/skbuff.c:1375:
+			printk("%sskb frag %d: not readable\n", level, i);

total: 0 errors, 1 warnings, 0 checks, 162 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 f6bf8a7e8683 ("net: support non paged skb frags") 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, 1 warnings, 0 checks, 162 lines checked