[parisc-linux] Re: documented Oops running big-endian reiserfs on parisc architecture
Hans Reiser
reiser@namesys.com
Mon, 03 Sep 2001 14:25:39 +0400
Well, I should have read the next email before saying these patches seemed to be
stable.
Jeff?
Hans
thunder7@xs4all.nl wrote:
>
> Well, I watched the number of files in /lost+found grow every time I
> had to pull the plug from my HP C200, so I added a 'sync' option in
> /etc/fstab and tried to get reiserfs working.
>
> I patched my 2.4.9-pa13 kernel with
>
> endian-safe-reiserfs-for-2.4.8.patch
>
> which went without warnings or errors. A patched
> reiserfs-progs-3.x.0k-pre9 also built well (despite what the configure
> scripts says, you _need_ automake).
>
> Creating a reiserfs-partition went without a hitch.
>
> running bonnie -s 128 on it did this:
>
> Adding Swap: 1041400k swap-space (priority -1)
> eth0: Setting half-duplex based on MII#1 link partner capability of 0021.
> reiserfs: checking transaction log (device 08:03) ...
> Using r5 hash to sort names
> ReiserFS version 3.6.25
> bonnie[163]: Unaligned data reference 28
>
> YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
> PSW: 00000000000001001111111100001110
> r0-3 00000000 102ec550 10197d0c 26f24838
> r4-7 26f24848 27054e40 00000011 00000020
> r8-11 0000000a 26f06580 00000020 26f247a0
> r12-15 27088d1c ffffffff 26f24838 00000001
> r16-19 26f24708 faf02c68 0006a248 26f24852
> r20-23 0000000f 00000003 03000000 00000002
> r24-27 0000000a 0000000a 26f24848 102d4010
> r28-31 26f24848 01000000 26f24b40 10196fc8
> sr0-3 00000000 00000004 00000000 00000004
> sr4-7 00000000 00000000 00000000 00000000
>
> IASQ: 00000000 00000000 IAOQ: 10197d10 10197d14
> IIR: 0c7c1093 ISR: 00000000 IOR: 26f24846
> ORIG_R28: 00000000
> pa8200:/var/log#
>
> After reading in the archives about ksymoops, I looked up this part of
> my System.map:
>
> 101979e0 T reiserfs_lookup
> 101979e0 t .L1432
> 10197ad4 t reiserfs_add_entry
> 10197e50 t .L1512
> 10197f28 t .L1510
> 10198068 T reiserfs_create
>
> objdump -d /boot/linux-2.4.9-pa13 revealed:
>
> 10197cbc: d6 d6 0b 18 depw,z r22,7,8,r22
> 10197cc0: d6 b5 0a 10 depw,z r21,15,16,r21
> 10197cc4: 41 33 01 fe ldb ff(sr0,r9),r19
> 10197cc8: 0a d5 02 75 or r21,r22,r21
> 10197ccc: d6 94 09 08 depw,z r20,23,24,r20
> 10197cd0: 0a b4 02 74 or r20,r21,r20
> 10197cd4: 0a 93 02 73 or r19,r20,r19
> 10197cd8: d2 75 18 f8 extrw,u r19,7,8,r21
> 10197cdc: d2 74 19 f8 extrw,u r19,15,8,r20
> 10197ce0: 0c 73 12 16 stb r19,b(sr0,r3)
> 10197ce4: d2 73 1a f8 extrw,u r19,23,8,r19
> 10197ce8: 0c 75 12 10 stb r21,8(sr0,r3)
> 10197cec: 0c 74 12 12 stb r20,9(sr0,r3)
> 10197cf0: e8 86 a9 e4 b,l 102a51e8 <memcpy>,%r2
> 10197cf4: 0c 73 12 14 stb r19,a(sr0,r3)
> 10197cf8: 08 06 02 59 copy r6,r25
> 10197cfc: 08 04 02 5a copy r4,r26
> 10197d00: d7 20 1c 1d depwi 0,31,3,r25
> 10197d04: e8 0d a5 d8 call 101b1ff8 <padd_item>
> 10197d08: 08 08 02 58 copy r8,r24
> 10197d0c: 00 01 0e 74 rsm 1,r20
> 10197d10: 0c 7c 10 93 ldw e(sr0,r3),r19
> 10197d14: d6 60 1f 1f depwi 0,7,1,r19
> 10197d18: 0c 73 12 9c stw r19,e(sr0,r3)
> 10197d1c: 00 14 18 60 mtsm r20
> 10197d20: 85 e0 26 32 cmpib,=,n 0,r15,10198040 <.L1510+0x118>
> 10197d24: 00 01 0e 74 rsm 1,r20
> 10197d28: 0c 7c 10 93 ldw e(sr0,r3),r19
> 10197d2c: d6 7f 1f 5f depwi -1,5,1,r19
> 10197d30: 0c 73 12 9c stw r19,e(sr0,r3)
> 10197d34: 00 14 18 60 mtsm r20
> 10197d38: 08 00 02 54 copy r0,r20
> 10197d3c: 08 00 02 55 copy r0,r21
> 10197d40: 37 c6 3e 51 ldo -d8(sp),r6
> 10197d44: 37 cd 3d c1 ldo -120(sp),r13
> 10197d48: 6b d4 3e 51 stw r20,-d8(sr0,sp)
> 10197d4c: 6b d5 3e 59 stw r21,-d4(sr0,sp)
> 10197d50: 6b d4 3e 61 stw r20,-d0(sr0,sp)
> 10197d54: 6b d5 3e 69 stw r21,-cc(sr0,sp)
> 10197d58: 08 0c 02 59 copy r12,r25
> 10197d5c: 6b c6 3e 01 stw r6,-100(sr0,sp)
> 10197d60: 6b cd 3f 99 stw r13,-34(sr0,sp)
> 10197d64: 08 08 02 58 copy r8,r24
> 10197d68: 08 05 02 5a copy r5,r26
> 10197d6c: eb ff b4 4d b,l 10197798 <reiserfs_find_entry>,%r2
>
> which makes the error somewhere around here in
> fs/reiserfs/namei.c, function reiserfs_add_entry, after call to
> padd_item, before call to reiserfs_find_entry:
>
> /* copy name */
> memcpy ((char *)(deh + 1), name, namelen);
> /* padd by 0s to the 4 byte boundary */
> padd_item ((char *)(deh + 1), ROUND_UP (namelen), namelen);
>
> /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */
> mark_de_without_sd (deh);
> visible ? mark_de_visible (deh) : mark_de_hidden (deh);
>
> /* find the proper place for the new entry */
> memset (bit_string, 0, sizeof (bit_string));
> de.de_gen_number_bit_string = (char *)bit_string;
> retval = reiserfs_find_entry (dir, name, namelen, &path, &de);
>
> And there I'm stuck. I'm sending this to the parisc-list to document the
> failure, and to linux-kernel to reach some reiserfs-experts, perhaps.
>
> I'm willing to test anything!
>
> Good luck,
> Jurriaan
> --
> "I have seen her. That is enough, perhaps."
> Pug smiled. "You are a rare man."
> Raymond E Feist - The King's Buccaneer
> GNU/Linux 2.4.9-ac5 SMP/ReiserFS 2x1402 bogomips load av: 0.04 0.01 0.06
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