Subject: [merged] printk-add-comment-about-tricky-check-for-text-buffer-size.patch removed from -mm tree To: pmladek@xxxxxxx,fweisbec@xxxxxxxxx,jack@xxxxxxx,kay@xxxxxxxx,mhocko@xxxxxxx,rostedt@xxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Fri, 04 Apr 2014 12:32:50 -0700 The patch titled Subject: printk: add comment about tricky check for text buffer size has been removed from the -mm tree. Its filename was printk-add-comment-about-tricky-check-for-text-buffer-size.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Petr Mladek <pmladek@xxxxxxx> Subject: printk: add comment about tricky check for text buffer size There is no check for potential "text_len" overflow. It is not needed because only valid level is detected. It took me some time to understand why. It would deserve a comment ;-) Signed-off-by: Petr Mladek <pmladek@xxxxxxx> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxx> Cc: Kay Sievers <kay@xxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/printk/printk.c | 5 +++++ 1 file changed, 5 insertions(+) diff -puN kernel/printk/printk.c~printk-add-comment-about-tricky-check-for-text-buffer-size kernel/printk/printk.c --- a/kernel/printk/printk.c~printk-add-comment-about-tricky-check-for-text-buffer-size +++ a/kernel/printk/printk.c @@ -1561,6 +1561,11 @@ asmlinkage int vprintk_emit(int facility case 'd': /* KERN_DEFAULT */ lflags |= LOG_PREFIX; } + /* + * No need to check length here because vscnprintf + * put '\0' at the end of the string. Only valid and + * newly printed level is detected. + */ text_len -= end_of_header - text; text = (char *)end_of_header; } _ Patches currently in -mm which might be from pmladek@xxxxxxx are origin.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html