From: He Zhe zhe.he@windriver.com
[ Upstream commit 51a72ab7372d85c96104e58036f1b49ba11e5d2b ]
log_first_seq and console_seq are 64-bit unsigned integers. Correct a wrong casting that might cut off the output.
Link: http://lkml.kernel.org/r/1538239553-81805-2-git-send-email-zhe.he@windriver.... Cc: rostedt@goodmis.org Cc: linux-kernel@vger.kernel.org Signed-off-by: He Zhe zhe.he@windriver.com [sergey.senozhatsky@gmail.com: More descriptive commit message] Reviewed-by: Sergey Senozhatsky sergey.senozhatsky@gmail.com Signed-off-by: Petr Mladek pmladek@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/printk/printk.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 11d70fd15e706..52390f5a1db11 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -2358,8 +2358,9 @@ void console_unlock(void) printk_safe_enter_irqsave(flags); raw_spin_lock(&logbuf_lock); if (console_seq < log_first_seq) { - len = sprintf(text, "** %u printk messages dropped **\n", - (unsigned)(log_first_seq - console_seq)); + len = sprintf(text, + "** %llu printk messages dropped **\n", + log_first_seq - console_seq);
/* messages are gone, move to first one */ console_seq = log_first_seq;