On Mon, 5 Apr 2021 09:57:27 +0000 (UTC), Christophe Leroy wrote: > For unknown reason, old commit d27dfd388715 ("Import pre2.0.8") > changed 'ptrdiff_t' from 'int' to 'long'. > > GCC expects it as 'int' really, and this leads to the following > warning when building KFENCE: > > CC mm/kfence/report.o > In file included from ./include/linux/printk.h:7, > from ./include/linux/kernel.h:16, > from mm/kfence/report.c:10: > mm/kfence/report.c: In function 'kfence_report_error': > ./include/linux/kern_levels.h:5:18: warning: format '%td' expects argument of > type 'ptrdiff_t', but argument 6 has type 'long int' [-Wformat=] > 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ > | ^~~~~~ > ./include/linux/kern_levels.h:11:18: note: in expansion of macro 'KERN_SOH' > 11 | #define KERN_ERR KERN_SOH "3" /* error conditions */ > | ^~~~~~~~ > ./include/linux/printk.h:343:9: note: in expansion of macro 'KERN_ERR' > 343 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) > | ^~~~~~~~ > mm/kfence/report.c:213:3: note: in expansion of macro 'pr_err' > 213 | pr_err("Out-of-bounds %s at 0x%p (%luB %s of kfence-#%td):\n", > | ^~~~~~ > > [...]
Applied to powerpc/next. [1/1] powerpc/32: Remove powerpc specific definition of 'ptrdiff_t' https://git.kernel.org/powerpc/c/c46bbf5d2defae50d61ddf31502017ee8952af83 cheers