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r.j.hall
n00b
Joined: 06 Feb 2003
Posts: 53
Location: London
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 Posted: Tue Feb 03, 2004 4:14 pm Post subject: cryptoapi loop filesystem segfaults |
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I am having trouble getting the cryptoapi modules to behave properly. I have loopback enabled in my Kernels block devices. I emerge cryptoapi and re emerge utils-linux with no obvious problems.
The modules load no problem. the only warnings are the taint warnings. The modules I load are:
| Code: |
cipher-aes 31748 1
cryptoloop 1196 1
cryptoapi 2868 2 [cipher-aes cryptoloop]
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When I set up /dev/loop0 to be a partition on one of my HDD it seems to work, returning no errors (doesn't return anything).
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losetup -e aes -k 256 -p 0 /dev/loop0 /dev/sdb1 < ext-backup.key
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This seems to be OK. I get a process:
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3968 ? SW 0:00 [loop0]
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which I can't kill or attach a strace to (not sure if that is by design or not). it will let me create the file system on the loop device using
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mke2fs -j /dev/loop0
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this also seems to run with no problems. Now is the annoying part. when I try and mount the loop device using:
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mount -t ext3 /dev/loop0
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I either get a segfault or no response. I can't kill the process and ctrl-c does nothing. The only entry I get in /var/log messages is:
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Feb 3 14:12:29 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000094
Feb 3 14:12:29 trinity kernel: printing eip:
Feb 3 14:12:29 trinity kernel: c0324d88
Feb 3 14:12:29 trinity kernel: *pde = 00000000
Feb 3 14:12:29 trinity kernel: Oops: 0002
Feb 3 14:12:29 trinity kernel: CPU: 1
Feb 3 14:12:29 trinity kernel: EIP: 0010:[<c0324d88>] Tainted: P
Feb 3 14:12:29 trinity kernel: EFLAGS: 00010286
Feb 3 14:12:29 trinity kernel: eax: 00000000 ebx: 00000094 ecx: 00000094 edx: 00000001
Feb 3 14:12:29 trinity kernel: esi: 00000000 edi: ca9d7400 ebp: cf93f4fc esp: ca9d1dc0
Feb 3 14:12:29 trinity kernel: ds: 0018 es: 0018 ss: 0018
Feb 3 14:12:29 trinity kernel: Process mount (pid: 3967, stackpage=ca9d1000)
Feb 3 14:12:29 trinity kernel: Stack: 00000078 cf93f4fc cf93f400 cbd7d400 c03169c9 00000000 fffffffb cf93f400
Feb 3 14:12:29 trinity kernel: cf93f400 00000020 c0316a42 cf93f400 c022e320 c04f9ecf c022f3c0 00100000
Feb 3 14:12:29 trinity kernel: c0317c13 cf93f400 c04f9ecf c04ffa00 00000020 d4e86f64 00000080 0001f942
Feb 3 14:12:29 trinity kernel: Call Trace: [<c03169c9>] [<c0316a42>] [<c0317c13>] [<c03184b8>] [<c02e0f2e>]
Feb 3 14:12:29 trinity kernel: [<c02dfde5>] [<c02e12f0>] [<c02f7b53>] [<c02f7ea4>] [<c02f8446>] [<c029b087>]
Feb 3 14:12:29 trinity kernel:
Feb 3 14:12:29 trinity kernel: Code: f0 ff 8e 94 00 00 00 0f 88 3f 09 00 00 8b 44 24 18 89 44 24
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I did get it to mount sucessfully twice last night. As I thought the problem was now fixed I went home all happy. When I get into work this morning it does not work again.
something is obviously unhappy in the loop device, but the question is what and how do I fix it?
Any suggestions would be gratefully appreciated.
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r.j.hall
n00b
Joined: 06 Feb 2003
Posts: 53
Location: London
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| Posted: Mon Feb 16, 2004 11:23 am Post subject: |
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Does anyonone have any clue about what might be causing this? I need to use an encrypted HDD to store our backups on for transportation off site, which must be encrypted. The one thing that confuses me slightly is the fact that the cryptoapi is a seperate ebuild, yet there also a cryptographic API section in the current gentoo kernel. Should the crypto modules in the kernel be enabled or disabled to function with the ebuild Cryptoapi?
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r.j.hall
n00b
Joined: 06 Feb 2003
Posts: 53
Location: London
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| Posted: Thu May 20, 2004 2:20 pm Post subject: |
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I fixed this problem by upgrading to the 2.6 kernel, now all the crypto loop stuff works great
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