[asterisk-dev] Seeing kernel oops in crypto (linux ocf)

[Kevin P. Fleming]

On 06/29/2011 11:29 AM, Philip Prindeville wrote:
> I'm running 2.6.38.8 on a Geode processor (alix 6F2) with OpenWRT trunk, and Asterisk 1.8.
>
> At startup, Asterisk causes an oops:
>
> general protection fault: 0000 [#1]
> last sysfs file: /sys/kernel/uevent_seqnum
> Modules linked in: lm90 scx200_acb i2c_gpio i2c_algo_pcf i2c_algo_pca i2c_algo_bit i2c_dev i2c_core geodewdt via_rhine ohci_hcd cs5535_gpio cs5535_clockevt nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp cs5535_mfgpt cs5535_mfd mfd_core ipt_MASQUERADE iptable_nat nf_nat xt_conntrack xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd pppoe pppox pppoatm ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables nsc_gpio gpio_dev dummy ppp_mppeppp_async ppp_generic slhc br2684 atm ath9k ath9k_common ath9k_hw ath5k ath mac80211 usbcore nls_base crc_ccitt cfg80211 compat sha1_generic cryptosoft cryptodev(P) ocf(P) geode_aes ecb arc4 aes_i586 aes_generic crypto_blkcipher cryptomgr aead crypto_hash crypto_algapi
>
> Pid: 1263, comm: asterisk Tainted: P            2.6.38.8 #1
> EIP: 0060:[<d091a620>] EFLAGS: 00010282 CPU: 0
> EIP is at 0xd091a620
> EAX: fffffffe EBX: cee44004 ECX: cfdf606c EDX: 00008010
> ESI: 00000000 EDI: ce467200 EBP: ce403ea0 ESP: ce403d94
>   DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
> Process asterisk (pid: 1263, ti=ce402000 task=cf829c20 task.ti=ce402000)
> Stack:
>   00000001 00000000 d091b6e0 cfb96400 ce403ea0 00000000 d08e94ef 00000004
>   02000000 ce403ea0 00000282 00000282 cfb96400 ce403f24 00000001 ce403ec4
>   cee2c1d0 03000000 c01c6365 d090a96f bfd7ca94 00000001 06000000 00000014
> Call Trace:
>   [<d08e94ef>] ? crypto_newsession+0x1d2/0x27f [ocf]
>   [<d090a96f>] ? 0xd090a96f
>   [<c10edc63>] ? kobject_get+0xf/0x13
>   [<c106aaef>] ? chrdev_open+0xb4/0xf9
>   [<c10576e1>] ? __do_fault.clone.72+0x2db/0x325
>   [<d090b99c>] ? 0xd090b99c
>   [<c10735ea>] ? do_vfs_ioctl+0x46e/0x4c6
>   [<c1073669>] ? sys_ioctl+0x27/0x4a
>   [<c11c44bd>] ? syscall_call+0x7/0xb
> Code: c2 c1 f8 03 39 04 24 72 b9 85 ff 75 07 8b 13 8b 42 08 eb 10 68 29 ac 91 d0
>   e8 f0 8a 8a f0 8b 13 8b 42 08 59 8b 12 80 e6 80 74 25<81>  08 00 01 00 00 8b 03
>   8b 4d 04 8b 70 08 8d 41 0e 83 c1 07 0f
> EIP: [<d091a620>] 0xd091a620 SS:ESP 0068:ce403d94
> ---[ end trace a7dc158c2c15d886 ]---
>
>
> I'm wondering if anyone else has seen this, or if there's an obvious set of crypto modules that Asterisk needs when using linux-ocf.
>
> For instance, des, hmac, and md5 weren't turned on (but aes and sha1 were).

Asterisk does not use kernel crypto modules at all. It is possible that 
Asterisk's usage of OpenSSL may result in *it* using kernel crypto 
modules, but I don't think that's likely either.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
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