| From | Greg Kroah-Hartman <> | Subject | [ 30/85] UBIFS: fix complaints about too small debug buffer size | Date | Wed, 12 Sep 2012 16:36:13 -0700 |
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From: Greg KH <gregkh@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
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From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
commit 65b455b123c7e2b835a0b7148f9bae584f95000e upstream.
When debugging is enabled, we use a temporary on-stack buffer for formatting the key strings like "(11368871, direntry, 0xcd0750)". The buffer size is 32 bytes and sometimes it is not enough to fit the key string - e.g., when inode numbers are high. This is not fatal, but the key strings are incomplete and UBIFS complains like this:
UBIFS assert failed in dbg_snprintf_key at 137 (pid 1)
This is a regression caused by "515315a UBIFS: fix key printing".
Fix the issue by increasing the buffer to 48 bytes.
Reported-by: Michael Hench <michaelhench@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Tested-by: Michael Hench <michaelhench@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/ubifs/debug.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -170,7 +170,7 @@ struct ubifs_global_debug_info { #define ubifs_dbg_msg(type, fmt, ...) \ pr_debug("UBIFS DBG " type ": " fmt "\n", ##__VA_ARGS__) -#define DBG_KEY_BUF_LEN 32 +#define DBG_KEY_BUF_LEN 48 #define ubifs_dbg_msg_key(type, key, fmt, ...) do { \ char __tmp_key_buf[DBG_KEY_BUF_LEN]; \ pr_debug("UBIFS DBG " type ": " fmt "%s\n", ##__VA_ARGS__, \
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