CHECK: extern prototypes should be avoided in .h files
#33: FILE: include/linux/mm.h:2487:
+extern int copy_str_from_process_vm(struct task_struct *tsk, unsigned long addr,

CHECK: Alignment should match open parenthesis
#34: FILE: include/linux/mm.h:2488:
+extern int copy_str_from_process_vm(struct task_struct *tsk, unsigned long addr,
+		void *buf, int len, unsigned int gup_flags);

WARNING: line length of 139 exceeds 80 columns
#63: FILE: kernel/bpf/helpers.c:3091:
+__bpf_kfunc int bpf_copy_from_user_task_str(void *dst, u32 dst__sz, const void __user *unsafe_ptr__ign, struct task_struct *tsk, u64 flags)

WARNING: line length of 91 exceeds 80 columns
#74: FILE: kernel/bpf/helpers.c:3102:
+	ret = copy_str_from_process_vm(tsk, (unsigned long)unsafe_ptr__ign, dst, count, 0);

CHECK: Alignment should match open parenthesis
#116: FILE: mm/memory.c:6681:
+static int __copy_str_from_remote_vm(struct mm_struct *mm, unsigned long addr,
+			      void *buf, int len, unsigned int gup_flags)

WARNING: line length of 82 exceeds 80 columns
#156: FILE: mm/memory.c:6721:
+		retval = strncpy_from_user(buf, (const char __user *)addr, bytes);

WARNING: line length of 81 exceeds 80 columns
#188: FILE: mm/memory.c:6787:
+ * copy_str_from_process_vm - copy a string from another process's address space.

CHECK: Alignment should match open parenthesis
#202: FILE: mm/memory.c:6801:
+int copy_str_from_process_vm(struct task_struct *tsk, unsigned long addr,
+		void *buf, int len, unsigned int gup_flags)

total: 0 errors, 4 warnings, 4 checks, 180 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 4728f9747931 ("bpf: Add bpf_copy_from_user_task_str 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, 4 warnings, 4 checks, 180 lines checked