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Subject[PATCH v2] MODSIGN: do not send garbage to stderr when enabling modules signature
Date
openssl may send garbage to stderr when generating X.509 key pair for
modules signature regardless there was an error or not. It makes more
difficult to create scripts based on kernel error/warning messages.

When compiling kernel with -jN (N > 1), all warning/error messages
printed while openssl is generating key pair may get mixed dots and
other symbols openssl sends to stderr. This patch makes sure openssl
logs go to default stdout.

Example of the garbages:

crypto/anubis.c:581: warning: ‘inter’ is used uninitialized in this function
Generating a 4096 bit RSA private key
.........
drivers/gpu/drm/i915/i915_gem_gtt.c: In function ‘gen6_ggtt_insert_entries’:
drivers/gpu/drm/i915/i915_gem_gtt.c:440: warning: ‘addr’ may be used uninitialized in this function
.net/mac80211/tx.c: In function ‘ieee80211_subif_start_xmit’:
net/mac80211/tx.c:1780: warning: ‘chanctx_conf’ may be used uninitialized in this function
..drivers/isdn/hardware/mISDN/hfcpci.c: In function ‘hfcpci_softirq’:
.....drivers/isdn/hardware/mISDN/hfcpci.c:2298: warning: ignoring return value of ‘driver_for_each_device’, declared with attribute warn_unused_result
net/unix/af_unix.c: In function ‘unix_bind’:
net/unix/af_unix.c:892: warning: ‘path.dentry’ may be used uninitialized in this function
net/unix/af_unix.c:892: warning: ‘path.mnt’ may be used uninitialized in this function
...++
In file included from drivers/message/i2o/config-osm.c:39:
drivers/message/i2o/i2o_config.c: In function ‘i2o_cfg_passthru’:
drivers/message/i2o/i2o_config.c:888: warning: cast to pointer from integer of different size
drivers/message/i2o/i2o_config.c:943: warning: cast to pointer from integer of different size
drivers/net/ethernet/amd/nmclan_cs.c: In function ‘nmclan_config’:
drivers/net/ethernet/amd/nmclan_cs.c:625: warning: ‘pcmcia_request_exclusive_irq’ is deprecated (declared at include/pcmcia/ds.h:201)
drivers/net/ethernet/mellanox/mlx4/mcg.c: In function ‘find_entry’:
.........................................................................................................................................................................................++
writing new private key to 'signing_key.priv'
-----
drivers/net/ethernet/mellanox/mlx4/mcg.c:601: warning: ‘hash’ may be used uninitialized in this function

Signed-off-by: David Cohen <david.a.cohen@intel.com>
---
kernel/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/Makefile b/kernel/Makefile
index bbde5f1..5a51e6c 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -175,7 +175,7 @@ signing_key.priv signing_key.x509: x509.genkey
openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
-batch -x509 -config x509.genkey \
-outform DER -out signing_key.x509 \
- -keyout signing_key.priv
+ -keyout signing_key.priv 2>&1
@echo "###"
@echo "### Key pair generated."
@echo "###"
--
1.7.10.4
--
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