9:16 a.m.
tree: https://github.com/jimc/linux.git dd-drm-next
head: 02a6c357b6a5eb02cc6b2ceb5a7a93c809388ae0
commit: 74992de06222ed51caed07800e291e68eb4a627e [3/16] dyndbg: rationalize verbosity
config: hexagon-randconfig-r034-20210911 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
261cbe98c38f8c1ee1a482fe76511110e790f58a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/jimc/linux/commit/74992de06222ed51caed07800e291e68eb4a...
git remote add jimc https://github.com/jimc/linux.git
git fetch --no-tags jimc dd-drm-next
git checkout 74992de06222ed51caed07800e291e68eb4a627e
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> lib/dynamic_debug.c:786:54: warning: format specifies type
'unsigned long' but the argument has type 'size_t' (aka 'unsigned
int') [-Wformat]
v2pr_info("read %lu bytes from userspace
<\n%s>\n", len, tmpbuf);
~~~ ^~~
%u
lib/dynamic_debug.c:120:49: note: expanded from macro 'v2pr_info'
#define v2pr_info(fmt, ...) vnpr_info(2, fmt, ##__VA_ARGS__)
~~~ ^~~~~~~~~~~
lib/dynamic_debug.c:116:18: note: expanded from macro 'vnpr_info'
pr_info(fmt, ##__VA_ARGS__); \
~~~ ^~~~~~~~~~~
include/linux/printk.h:420:34: note: expanded from macro 'pr_info'
printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
~~~ ^~~~~~~~~~~
1 warning generated.
vim +786 lib/dynamic_debug.c
765
766 /*
767 * File_ops->write method for <debugfs>/dynamic_debug/control. Gathers
the
768 * command text from userspace, parses and executes it.
769 */
770 #define USER_BUF_PAGE 4096
771 static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf,
772 size_t len, loff_t *offp)
773 {
774 char *tmpbuf;
775 int ret;
776
777 if (len == 0)
778 return 0;
779 if (len > USER_BUF_PAGE - 1) {
780 pr_warn("expected <%d bytes into control\n", USER_BUF_PAGE);
781 return -E2BIG;
782 }
783 tmpbuf = memdup_user_nul(ubuf, len);
784 if (IS_ERR(tmpbuf))
785 return PTR_ERR(tmpbuf);
786 v2pr_info("read %lu bytes from userspace
<\n%s>\n", len, tmpbuf);
787
788 ret = ddebug_exec_queries(tmpbuf, NULL);
789 kfree(tmpbuf);
790 if (ret < 0)
791 return ret;
792
793 *offp += len;
794 return len;
795 }
796
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org