2016-08-11 21:55:09

by Tapas Sarangi

Subject: FIPS self test failures (kernel panic) in kernel-4.7

Hello,

A few algorithms are failing ?alg self tests' during kernel boot into FIPS
mode (fips=1), causing a kernel panic (see below). I am using vanilla
kernel-4.7 source for these tests.

These messages were from individual boots into FIPS mode, where algorithms
are taken out from ".fips_allowed=1? and compiled.

Following (see below) is a patch to disable tests for some of these
algorithms work and kernel could boot into FIPS mode (fips=1)
successfully. Please Let me know if there is a deeper/lower-level fix to
this.


##
[ 1.270663] alg: hash: Failed to load transform for cmac(aes): -2
[ 1.271471] Kernel panic - not syncing: cmac(aes): cmac(aes) alg self
test failed in fips mode!

[ 1.256148] alg: hash: Failed to load transform for cmac(des3_ede): -2
[ 1.257005] Kernel panic - not syncing: cmac(des3_ede): cmac(des3_ede)
alg self test failed in fips mode!
[ 1.257005]

[ 1.427856] alg: aead: Failed to load transform for
authenc(hmac(sha1),cbc(des3_ede)): -2
[ 1.429036] Kernel panic - not syncing:
authenc(hmac(sha1),cbc(des3_ede)): authenc(hmac(sha1),cbc(des3_ede)) alg
self test failed in fips mode!
[ 1.429036]


[ 1.316830] alg: aead: Failed to load transform for
authenc(hmac(sha224),cbc(des3_ede)): -2
[ 1.317914] Kernel panic - not syncing:
authenc(hmac(sha224),cbc(des3_ede)): authenc(hmac(sha224),cbc(des3_ede))
alg self test failed in fips mode!
[ 1.317914]


[ 1.262950] alg: aead: Failed to load transform for
authenc(hmac(sha256),cbc(des3_ede)): -2
[ 1.264094] Kernel panic - not syncing:
authenc(hmac(sha256),cbc(des3_ede)): authenc(hmac(sha256),cbc(des3_ede))
alg self test failed in fips mode!
[ 1.264094]


##



#??PATCH??
--- a/crypto/testmgr.c 2016-08-11 14:06:15.925140405 -0500
+++ b/crypto/testmgr.c 2016-08-11 15:42:13.954317991 -0500
@@ -2079,7 +2079,6 @@
}, {
.alg = "authenc(hmac(sha1),cbc(des3_ede))",
.test = alg_test_aead,
- .fips_allowed = 1,
.suite = {
.aead = {
.enc = {
@@ -2133,7 +2132,6 @@
}, {
.alg = "authenc(hmac(sha224),cbc(des3_ede))",
.test = alg_test_aead,
- .fips_allowed = 1,
.suite = {
.aead = {
.enc = {
@@ -2174,7 +2172,6 @@
}, {
.alg = "authenc(hmac(sha256),cbc(des3_ede))",
.test = alg_test_aead,
- .fips_allowed = 1,
.suite = {
.aead = {
.enc = {
@@ -2209,7 +2206,6 @@
}, {
.alg = "authenc(hmac(sha384),cbc(des3_ede))",
.test = alg_test_aead,
- .fips_allowed = 1,
.suite = {
.aead = {
.enc = {
@@ -2258,7 +2254,6 @@
}, {
.alg = "authenc(hmac(sha512),cbc(des3_ede))",
.test = alg_test_aead,
- .fips_allowed = 1,
.suite = {
.aead = {
.enc = {
@@ -2386,7 +2381,6 @@
}, {
.alg = "cbc(des3_ede)",
.test = alg_test_skcipher,
- .fips_allowed = 1,
.suite = {
.cipher = {
.enc = {
@@ -2462,7 +2456,6 @@
}
}, {
.alg = "cmac(aes)",
- .fips_allowed = 1,
.test = alg_test_hash,
.suite = {
.hash = {
@@ -2472,7 +2465,6 @@
}
}, {
.alg = "cmac(des3_ede)",
- .fips_allowed = 1,
.test = alg_test_hash,
.suite = {
.hash = {
@@ -3753,7 +3745,6 @@
}, {
.alg = "xts(aes)",
.test = alg_test_skcipher,
- .fips_allowed = 1,
.suite = {
.cipher = {
.enc = {



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2016-08-12 13:11:55

by Stephan Müller

Subject: Re: FIPS self test failures (kernel panic) in kernel-4.7

Am Donnerstag, 11. August 2016, 21:55:05 CEST schrieb Tapas Sarangi:

Hi Tapas,

> Hello,
>
> A few algorithms are failing Œalg self tests' during kernel boot into FIPS
> mode (fips=1), causing a kernel panic (see below). I am using vanilla
> kernel-4.7 source for these tests.
>
> These messages were from individual boots into FIPS mode, where algorithms
> are taken out from ".fips_allowed=1² and compiled.
>
> Following (see below) is a patch to disable tests for some of these
> algorithms work and kernel could boot into FIPS mode (fips=1)
> successfully. Please Let me know if there is a deeper/lower-level fix to
> this.

Can you please send me (not the list) your .config file? I am not really sure
what is going on as I cannot reproduce it. I use the fips mode during my tests
and I use cmac or XTS and yet they do not cause an issue.

Thanks.

Ciao
Stephan