The type of vlen is 'size_t', and not 'unsigned int'. Fix it. ...... $ grep_syscall process_madvise mm/madvise.c:1161: SYSCALL_DEFINE5(process_madvise, int, pidfd, const struct iovec __user *, vec, size_t, vlen, int, behavior, unsigned int, flags) include/linux/syscalls.h:887: asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec, size_t vlen, int behavior, unsigned int flags); function grep_syscall() { if ! [ -v 1 ]; then >&2 echo "Usage: ${FUNCNAME[0]} <syscall>"; return ${EX_USAGE}; fi find * -type f \ |grep '\.c$' \ |sort -V \ |xargs pcregrep -Mn "(?s)^\w*SYSCALL_DEFINE.\(${1},.*?\)" \ |sed -E 's/^[^:]+:[0-9]+:/&\n/'; find * -type f \ |grep '\.[ch]$' \ |sort -V \ |xargs pcregrep -Mn "(?s)^asmlinkage\s+[\w\s]+\**sys_${1}\s*\(.*?\)" \ |sed -E 's/^[^:]+:[0-9]+:/&\n/'; } Signed-off-by: Alejandro Colomar <alx.manpages@xxxxxxxxx> --- man2/process_madvise.2 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/man2/process_madvise.2 b/man2/process_madvise.2 index 9dc90ced1..b00ceb6fc 100644 --- a/man2/process_madvise.2 +++ b/man2/process_madvise.2 @@ -33,7 +33,7 @@ process_madvise \- give advice about use of memory to a process .B #include <sys/uio.h> .PP .BI "ssize_t process_madvise(int " pidfd ", const struct iovec *" iovec , -.BI " unsigned long " vlen ", int " advice , +.BI " size_t " vlen ", int " advice , .BI " unsigned int " flags ");" .fi .PP -- 2.30.0