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SubjectLRW/XTS + Via Padlock Bug in 2.6.24-rc7?
Hello,

I have a Via Epia Sn1000 Board with a padlock-aes crypto accelerator, if
I uses this with cryptsetup and LRW or XTS, I get a kernel panic and
cryptsetup never ends.

XTS:
cryptsetup -c aes-xts-plain -s 256 luksFormat /dev/raid/test

general protection fault: 0000 [#1]
Modules linked in: lrw padlock_aes xts xt_TCPMSS xt_tcpmss
iptable_mangle pppoe pppox ipt_MASQUERADE xt_tcpudp iptable_nat nf_nat
nf_conntrack_ipv4 iptable_filter ip_tables x_tables af_packet
ppp_generic slhc aes_i586 dm_crypt dm_mod

Pid: 5991, comm: kcryptd Not tainted (2.6.24-rc7 #4)
EIP: 0060:[<f88cf028>] EFLAGS: 00010296 CPU: 0
EIP is at aes_crypt_copy+0x28/0x40 [padlock_aes]
EAX: f6385ff0 EBX: f61ce450 ECX: 00000001 EDX: f61ce430
ESI: f6235dac EDI: f6385ff0 EBP: f6235e00 ESP: f6235dac
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process kcryptd (pid: 5991, ti=f6234000 task=f63fcab0 task.ti=f6234000)
Stack: 811cd642 f3a4d1ea d12d0cfa 3098ed1e 00000000 ffffff24 c02695d8
00000060
f61ce450 f6385ff0 f6385ff0 f88cf096 f61ce430 f6385ff0 f6385ff0
00000010
f88c90fc f581f3e0 f6235e34 f6235ea8 00000010 f89b59df c29b34ff
391d88f0
Call Trace:
[<c02695d8>] gf128mul_x_ble+0x68/0x90
[<f88cf096>] aes_decrypt+0x56/0x60 [padlock_aes]
[<f88c90fc>] crypt+0xdc/0x110 [xts]
[<f88cf040>] aes_decrypt+0x0/0x60 [padlock_aes]
[<f88c9222>] decrypt+0x42/0x50 [xts]
[<f88cf810>] aes_encrypt+0x0/0x60 [padlock_aes]
[<f88cf040>] aes_decrypt+0x0/0x60 [padlock_aes]
[<f886a7de>] crypt_convert_scatterlist+0x6e/0xe0 [dm_crypt]
[<f886a9ea>] crypt_convert+0x19a/0x1c0 [dm_crypt]
[<f886aa10>] kcryptd_do_crypt+0x0/0x260 [dm_crypt]
[<f886aa59>] kcryptd_do_crypt+0x49/0x260 [dm_crypt]
[<c01195c0>] update_curr+0x70/0x110
[<f886aa10>] kcryptd_do_crypt+0x0/0x260 [dm_crypt]
[<c012b116>] run_workqueue+0x66/0xe0
[<c03f5279>] schedule+0x149/0x270
[<c012b8f0>] worker_thread+0x0/0x100
[<c012b98d>] worker_thread+0x9d/0x100
[<c012e790>] autoremove_wake_function+0x0/0x50
[<c012b8f0>] worker_thread+0x0/0x100
[<c012e452>] kthread+0x42/0x70
[<c012e410>] kthread+0x0/0x70
[<c0104acf>] kernel_thread_helper+0x7/0x18
=======================
Code: <f3> 0f a7 c8 8b 5c 24 20 8b 74 24 24 8b 7c 24 28 83 c4 2c c3 8d 74
EIP: [<f88cf028>] aes_crypt_copy+0x28/0x40 [padlock_aes] SS:ESP
0068:f6235dac
---[ end trace 9ae4eb03d4e4c477 ]---
note: kcryptd[5991] exited with preempt_count 1

I'm not on the lklm, so please CC me.

I hope you have enough information.

Thank you and greetings
Torben Viets




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