crypto: caam - fix printk recursion for long error texts
during recent descriptor development, an Invalid Sequence Command
error triggered a:
BUG: recent printk recursion!
due to insufficient memory allocated for the error text.
The Invalid Sequence Command error text is the longest.
The length of the maximum error string is computed as
the sum of:
"DECO: ": 6
"jump tgt desc idx 255: ": 23
Invalid Sequence Command text: 272
zero termination character: 1
i.e, 302 characters.
Define this maximum error string length in error.h and fix
caam_jr_strstatus callsites.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index 5c16019..b97575e 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -113,7 +113,7 @@
dev_err(dev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
#endif
if (err) {
- char tmp[256];
+ char tmp[CAAM_ERROR_STR_MAX];
dev_err(dev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
}
@@ -414,7 +414,7 @@
offsetof(struct ipsec_esp_edesc, hw_desc));
if (err) {
- char tmp[256];
+ char tmp[CAAM_ERROR_STR_MAX];
dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
}
@@ -454,7 +454,7 @@
offsetof(struct ipsec_esp_edesc, hw_desc));
if (err) {
- char tmp[256];
+ char tmp[CAAM_ERROR_STR_MAX];
dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
}
diff --git a/drivers/crypto/caam/error.h b/drivers/crypto/caam/error.h
index 067afc1..02c7baa 100644
--- a/drivers/crypto/caam/error.h
+++ b/drivers/crypto/caam/error.h
@@ -6,5 +6,6 @@
#ifndef CAAM_ERROR_H
#define CAAM_ERROR_H
+#define CAAM_ERROR_STR_MAX 302
extern char *caam_jr_strstatus(char *outstr, u32 status);
#endif /* CAAM_ERROR_H */