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| author | Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de> | 2015-11-25 09:47:40 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-25 19:49:58 +0300 |
| commit | 19cebbcb04c8277bb8a7905957c8af11967c4e28 (patch) | |
| tree | 41f8d634a7c0ea779bd199c75c36a776da018296 /drivers/isdn/hisax/hfc_sx.c | |
| parent | 8c7188b23474cca017b3ef354c4a58456f68303a (diff) | |
| download | linux-19cebbcb04c8277bb8a7905957c8af11967c4e28.tar.xz | |
isdn: Partially revert debug format string usage clean up
Commit 35a4a57 ("isdn: clean up debug format string usage") introduced
a safeguard to avoid accidential format string interpolation of data
when calling debugl1 or HiSax_putstatus. This did however not take into
account VHiSax_putstatus (called by HiSax_putstatus) does *not* call
vsprintf if the head parameter is NULL - the format string is treated
as plain text then instead. As a result, the string "%s" is processed
literally, and the actual information is lost. This affects the isdnlog
userspace program which stopped logging information since that commit.
So revert the HiSax_putstatus invocations to the previous state.
Fixes: 35a4a5733b0a ("isdn: clean up debug format string usage")
Cc: Kees Cook <keescook@chromium.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/hisax/hfc_sx.c')
| -rw-r--r-- | drivers/isdn/hisax/hfc_sx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/isdn/hisax/hfc_sx.c b/drivers/isdn/hisax/hfc_sx.c index b1fad81f0722..13b2151c10f5 100644 --- a/drivers/isdn/hisax/hfc_sx.c +++ b/drivers/isdn/hisax/hfc_sx.c @@ -674,7 +674,7 @@ receive_emsg(struct IsdnCardState *cs) ptr--; *ptr++ = '\n'; *ptr = 0; - HiSax_putstatus(cs, NULL, "%s", cs->dlog); + HiSax_putstatus(cs, NULL, cs->dlog); } else HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", skb->len); } |