Messages in this thread Patch in this message | | | Date | Fri, 19 Dec 2008 10:23:03 -0800 | From | Hiroshi Shimamoto <> | Subject | [PATCH] printk: fix discarding message when recursion_bug |
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From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Impact: fix
When recursion_bug is true, kernel discards original message because printk_buf contains recursion_bug_msg with NULL terminator. The sizeof(recursion_bug_msg) makes this, use strlen() to get correct length without NULL terminator.
Reported-by: Toshikazu Nakayama <nakayama.ts@ncos.nec.co.jp> Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> --- kernel/printk.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/printk.c b/kernel/printk.c index f492f15..e651ab0 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -662,7 +662,7 @@ asmlinkage int vprintk(const char *fmt, va_list args) if (recursion_bug) { recursion_bug = 0; strcpy(printk_buf, recursion_bug_msg); - printed_len = sizeof(recursion_bug_msg); + printed_len = strlen(recursion_bug_msg); } /* Emit the output into the temporary buffer */ printed_len += vscnprintf(printk_buf + printed_len, -- 1.6.0.4
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