On Wed 2019-12-11 08:01:09, Andrey Zhizhikin wrote: > GCC9 introduced string hardening mechanisms, which exhibits the error > during fs api compilation: > > error: '__builtin_strncpy' specified bound 4096 equals destination size > [-Werror=stringop-truncation] > > This comes when the length of copy passed to strncpy is is equal to > destination size, which could potentially lead to buffer overflow. > > There is a need to mitigate this potential issue by limiting the size of > destination by 1 and explicitly terminate the destination with NULL. > > Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@xxxxxxxxxxxxxxxxxxxx> > Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> > Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> Best Regards, Petr
