Hi,
I think I got bitten by a bug in reiserfs.
Kernels tested:
2.4.7 with patch-int
2.4.9 with patch-int (you can get its config from here:
http://office.altkom.com.pl/olo/domowa/249i)
plain 2.4.9
My distro: Mandrake 7.1
I can reproduce it on my machine using gftp 2.0.8. I suspect that when
it tries to write to files (or create ones) in the ~/.gftp/cache, it
triggers that bug. It clearly fails when trying to update its remote
directory cache, which is stored there.
I suspect that, because every time I connect to ftp.mozilla.org with
gftp I see the same outdated directory listing.
However, I were able to copy the ~/.gftp with cp -R in whole, so that's
probably not a problem with reading but writing.
When I had tried to refresh the remote dir, gftp-gtk segfaulted (it
probably tried to update the cache), kernel error occured and files on
the whole /home filesystem were inaccessible. I could list dirs in
/home, but any process that tried to open a file instantly freezed (even
if run by root).
The segfault message:
/usr/bin/gftp: line 9: 1349 Segmentation fault /usr/bin/gftp-gtk $@
When I tried to do an emergency sync using the Alt-SysRq-S combo, I got
the following message:
Syncing device 03:06 ... OK
Syncing device 03:08 ...
ll /dev/hda8 shows this:
brw-rw---- 1 root disk 3, 8 May 5 1998 /dev/hda8
mount shows this for dev/hda8:
/dev/hda8 on /home type reiserfs (rw)
Here are two snippets from /var/log messages - what the kernel said when
the error occured (including some lines of context):
Sep 1 10:00:20 karpaty PAM_pwdb[734]: (login) session closed for user olo
Sep 1 10:00:34 karpaty kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000008
Sep 1 10:00:34 karpaty kernel: printing eip:
Sep 1 10:00:34 karpaty kernel: c01721ce
Sep 1 10:00:34 karpaty kernel: *pde = 00000000
Sep 1 10:00:34 karpaty kernel: Oops: 0000
Sep 1 10:00:34 karpaty kernel: CPU: 0
Sep 1 10:00:34 karpaty kernel: EIP:
0010:[leaf_copy_boundary_item+786/1796]
Sep 1 10:00:34 karpaty kernel: EFLAGS: 00010246
Sep 1 10:00:34 karpaty kernel: eax: 00001000 ebx: 00000015 ecx:
c14ad600 edx: 00000000
Sep 1 10:00:34 karpaty kernel: esi: 00003a70 edi: c149c018 ebp:
c15d31f8 esp: c30cd7f8
Sep 1 10:00:34 karpaty kernel: ds: 0018 es: 0018 ss: 0018
Sep 1 10:00:34 karpaty kernel: Process gftp-gtk (pid: 990,
stackpage=c30cd000)
Sep 1 10:00:34 karpaty kernel: Stack: c149c018 00001000 00000010
00000015 ffffffff c14ad600 c30cdf18 c1195200
Sep 1 10:00:34 karpaty kernel: c2aad140 c016c05a c30be07c
00000015 c145ba20 c0172da9 c30cd8a4 c14ad600
Sep 1 10:00:34 karpaty kernel: 00000001 ffffffff c30cd8a4
c30cd894 ffffffff 00000010 c0172ff0 c30cd8a4
Sep 1 10:00:34 karpaty kernel: Call Trace: [get_num_ver+330/864]
[leaf_copy_items+153/244] [leaf_move_items+68/132]
[leaf_shift_right+27/68] [balance_leaf+3666/9696]
Sep 1 10:00:34 karpaty kernel: [schedule+614/916]
[__wait_on_buffer+128/140] [bread+89/120] [clear_all_dirty_bits+17/24]
[do_balance+142/256] [leaf_delete_items+91/344]
Sep 1 10:00:34 karpaty kernel: [reiserfs_insert_item+158/240]
[indirect2direct+474/572] [maybe_indirect_to_direct+497/508]
[reiserfs_cut_from_item+208/1104] [reiserfs_do_truncate+780/1052]
[reiserfs_truncate_file+170/372]
Sep 1 10:00:34 karpaty kernel: [reiserfs_file_release+828/864]
[fput+56/192] [filp_close+92/100] [sys_close+67/84] [system_call+51/64]
Sep 1 10:00:34 karpaty kernel:
Sep 1 10:00:34 karpaty kernel: Code: 8b 42 08 ff d0 83 c4 08 85 c0 75
07 31 c0 e9 d4 03 00 00 66
Sep 1 10:00:46 karpaty chronyd[416]: Selected source 149.156.2.100
Sep 1 10:01:00 karpaty CROND[993]: (root) CMD (
/usr/share/msec/promisc_check.sh)
Another one:
Sep 1 10:06:01 karpaty CROND[781]: (root) CMD (
/usr/share/msec/promisc_check.sh)
Sep 1 10:06:29 karpaty kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000008
Sep 1 10:06:29 karpaty kernel: printing eip:
Sep 1 10:06:29 karpaty kernel: c01721ce
Sep 1 10:06:29 karpaty kernel: *pde = 00000000
Sep 1 10:06:29 karpaty kernel: Oops: 0000
Sep 1 10:06:29 karpaty kernel: CPU: 0
Sep 1 10:06:29 karpaty kernel: EIP:
0010:[leaf_copy_boundary_item+786/1796]
Sep 1 10:06:29 karpaty kernel: EFLAGS: 00010246
Sep 1 10:06:29 karpaty kernel: eax: 00001000 ebx: 00000017 ecx:
c2d68f00 edx: 00000000
Sep 1 10:06:29 karpaty kernel: esi: 00003a70 edi: c0a18018 ebp:
c0afe228 esp: c1ed57f8
Sep 1 10:06:29 karpaty kernel: ds: 0018 es: 0018 ss: 0018
Sep 1 10:06:29 karpaty kernel: Process gftp-gtk (pid: 768,
stackpage=c1ed5000)
Sep 1 10:06:29 karpaty kernel: Stack: c0a18018 00001000 00000011
00000017 ffffffff c2d68f00 00000240 c0175ad3
Sep 1 10:06:29 karpaty kernel: c23c9000 c016c05a c2b38094
00000017 c2555d20 c0172da9 c1ed58a4 c2d68f00
Sep 1 10:06:29 karpaty kernel: 00000001 ffffffff c1ed58a4
c1ed5894 ffffffff 00000011 c0172ff0 c1ed58a4
Sep 1 10:06:29 karpaty kernel: Call Trace: [is_tree_node+67/88]
[get_num_ver+330/864] [leaf_copy_items+153/244] [leaf_move_items+68/132]
[leaf_shift_right+27/68]
Sep 1 10:06:29 karpaty kernel: [balance_leaf+3666/9696]
[schedule+614/916] [__wait_on_buffer+128/140] [bread+89/120]
[clear_all_dirty_bits+17/24] [do_balance+142/256]
Sep 1 10:06:29 karpaty kernel: [get_cnode+17/104]
[reiserfs_insert_item+158/240] [indirect2direct+474/572]
[maybe_indirect_to_direct+497/508] [reiserfs_cut_from_item+208/1104]
[reiserfs_do_truncate+780/1052]
Sep 1 10:06:29 karpaty kernel: [reiserfs_truncate_file+170/372]
[reiserfs_file_release+828/864] [fput+56/192] [filp_close+92/100]
[sys_close+67/84] [system_call+51/64]
Sep 1 10:06:29 karpaty kernel:
Sep 1 10:06:29 karpaty kernel: Code: 8b 42 08 ff d0 83 c4 08 85 c0 75
07 31 c0 e9 d4 03 00 00 66
Sep 1 10:06:30 karpaty chronyd[415]: Selected source 153.19.253.204
Sep 1 10:07:00 karpaty CROND[792]: (root) CMD (
/usr/share/msec/promisc_check.sh)
I'm leaving on a vacation right now, and will be back on Sep 10, so if
you want me to do further investigatons for you, contact me by e-mail then.
Best regards,
Olo
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This archive was generated by hypermail 2b29 : Fri Sep 07 2001 - 21:00:11 EST