From: Sander <sander@humilis.net>
To: Neil Brown <neilb@suse.de>
Cc: Andrew Morton <akpm@osdl.org>,
sander@humilis.net, linux-kernel@vger.kernel.org,
reiserfs-dev@namesys.com
Subject: Re: segfault mdadm --write-behind, 2.6.14-mm2 (was: Re: RAID1 ramdisk patch)
Date: Thu, 17 Nov 2005 08:50:41 +0100 [thread overview]
Message-ID: <20051117075041.GA5563@favonius> (raw)
In-Reply-To: <17275.48113.533555.948181@cse.unsw.edu.au>
Neil Brown wrote (ao):
> On Wednesday November 16, akpm@osdl.org wrote:
> > Sander <sander@humilis.net> wrote:
> > > With 2.6.14-mm2 (x86) and mdadm 2.1 I get a Segmentation fault when I
> > > try this:
> >
> > It oopsed in reiser4. reiserfs-dev added to Cc...
> >
>
> Hmm... It appears that md/bitmap is calling prepare_write and
> commit_write with 'file' as NULL - this works for some filesystems,
> but not for reiser4.
>
> Does this patch help.
Something changed, but it didn't fix it it seems:
# mdadm -C /dev/md1 --bitmap=/storage/raid1.bitmap -l1 -n2 /dev/loop0 --write-behind /dev/loop1
mdadm: RUN_ARRAY failed: No such file or directory
(google didn't turn up the same error, but a lot
without the 'No such file or directory')
[42949645.530000] md: bind<loop0>
[42949645.540000] md: bind<loop1>
[42949645.540000] md: md1: raid array is not clean -- starting background reconstruction
[42949645.540000] md1: bitmap file is out of date (0 < 1) -- forcing full recovery
[42949645.540000] md1: bitmap file is out of date, doing full recovery
[42949645.560000] md1: bitmap initialized from disk: read 0/7 pages, set 0 bits, status: 1
[42949645.560000] md1: failed to create bitmap (1)
[42949645.560000] md: pers->run() failed ...
[42949645.560000] md: md1 stopped.
[42949645.560000] md: unbind<loop1>
[42949645.560000] md: export_rdev(loop1)
[42949645.560000] md: unbind<loop0>
[42949645.560000] md: export_rdev(loop0)
# ls -l /storage/raid1.bitmap
-rw-r--r-- 1 root root 25856 Nov 17 08:37 /storage/raid1.bitmap
(file is there, lets try again)
~# mdadm -C /dev/md1 --bitmap=/storage/raid1.bitmap -l1 -n2 /dev/loop0 --write-behind /dev/loop1
mdadm: /dev/loop0 appears to be part of a raid array:
level=raid1 devices=2 ctime=Thu Nov 17 08:37:58 2005
mdadm: /dev/loop1 appears to be part of a raid array:
level=raid1 devices=2 ctime=Thu Nov 17 08:37:58 2005
Continue creating array? yes
mdadm: bitmap file /storage/raid1.bitmap already exists, use --force to overwrite
(ok, try with new bitmapfile)
# mdadm -C /dev/md1 --bitmap=/storage/raid.bitmap -l1 -n2 /dev/loop0 --write-behind /dev/loop1
mdadm: /dev/loop0 appears to be part of a raid array:
level=raid1 devices=2 ctime=Thu Nov 17 08:37:58 2005
mdadm: /dev/loop1 appears to be part of a raid array:
level=raid1 devices=2 ctime=Thu Nov 17 08:37:58 2005
Continue creating array? yes
mdadm: RUN_ARRAY failed: No such file or directory
(doesn't work, lets force the first one)
# mdadm -C /dev/md1 --bitmap=/storage/raid1.bitmap -f -l1 -n2 /dev/loop0 --write-behind /dev/loop1
mdadm: /dev/loop0 appears to be part of a raid array:
level=raid1 devices=2 ctime=Thu Nov 17 08:40:50 2005
mdadm: /dev/loop1 appears to be part of a raid array:
level=raid1 devices=2 ctime=Thu Nov 17 08:40:50 2005
Continue creating array? yes
Segmentation fault
For some reason, the dmesg is quite a bit longer now.
[42949831.700000] Bad page state at free_hot_cold_page (in process 'mdadm', page c1043220)
[42949831.700000] flags:0x80000001 mapping:00000000 mapcount:0 count:0
[42949831.700000] Backtrace:
[42949831.700000] [<c013b320>] bad_page+0x70/0xb0
[42949831.700000] [<c013bab1>] free_hot_cold_page+0x51/0xd0
[42949831.700000] [<c013f5da>] truncate_inode_pages_range+0x11a/0x310
[42949831.700000] [<c01a2ac0>] reiser4_invalidate_pages+0x90/0xc0
[42949831.700000] [<c01ba5ed>] kill_hook_extent+0x17d/0x5b0
[42949831.700000] [<c01ac29c>] plugin_by_unsafe_id+0x1c/0x110
[42949831.700000] [<c01ba470>] kill_hook_extent+0x0/0x5b0
[42949831.700000] [<c01cd7fd>] call_kill_hooks+0x9d/0xc0
[42949831.700000] [<c01cd8f0>] kill_head+0x0/0x40
[42949831.700000] [<c01cdf76>] prepare_for_compact+0x536/0x540
[42949831.700000] [<c0192a0e>] lock_tail+0x1e/0x40
[42949831.700000] [<c01ac29c>] plugin_by_unsafe_id+0x1c/0x110
[42949831.700000] [<c01cd820>] kill_units+0x0/0x80
[42949831.700000] [<c01cd8f0>] kill_head+0x0/0x40
[42949831.700000] [<c0192933>] longterm_unlock_znode+0xa3/0x160
[42949831.700000] [<c0192bf3>] longterm_lock_znode+0x163/0x250
[42949831.700000] [<c018ce4b>] jload_gfp+0x5b/0x140
[42949831.700000] [<c01cdfb1>] kill_node40+0x31/0xc0
[42949831.700000] [<c0191a88>] carry_cut+0x48/0x60
[42949831.700000] [<c018f458>] carry_on_level+0x38/0xc0
[42949831.700000] [<c018f302>] carry+0x82/0x1a0
[42949831.700000] [<c018f704>] add_carry+0x24/0x40
[42949831.700000] [<c018f51d>] post_carry+0x3d/0xa0
[42949831.710000] [<c0194886>] kill_node_content+0xf6/0x160
[42949831.710000] [<c0194e39>] cut_tree_worker_common+0x159/0x350
[42949831.710000] [<c0194ce0>] cut_tree_worker_common+0x0/0x350
[42949831.710000] [<c0195155>] cut_tree_object+0x125/0x240
[42949831.710000] [<c0196d29>] reiser4_grab_reserved+0x49/0x190
[42949831.710000] [<c018d04f>] jrelse+0xf/0x20
[42949831.710000] [<c01bfc81>] cut_file_items+0xb1/0x180
[42949831.710000] [<c01a0108>] add_empty_leaf+0xa8/0x220
[42949831.710000] [<c01bfdab>] shorten_file+0x4b/0x260
[42949831.710000] [<c01bfb40>] update_file_size+0x0/0x90
[42949831.710000] [<c01c2f03>] setattr_truncate+0x73/0x210
[42949831.710000] [<c01ad384>] permission_common+0x24/0x40
[42949831.710000] [<c01ad360>] permission_common+0x0/0x40
[42949831.710000] [<c0162b78>] permission+0x48/0x90
[42949831.710000] [<c0163119>] __link_path_walk+0x89/0xc40
[42949831.710000] [<c01c30fe>] setattr_unix_file+0x5e/0xc0
[42949831.710000] [<c016f58f>] notify_change+0xcf/0x2d5
[42949831.710000] [<c0163d3f>] link_path_walk+0x6f/0xe0
[42949831.710000] [<c0153e9b>] do_truncate+0x4b/0x70
[42949831.710000] [<c0162b78>] permission+0x48/0x90
[42949831.710000] [<c0164704>] may_open+0x184/0x1d0
[42949831.710000] [<c01647d5>] open_namei+0x85/0x560
[42949831.710000] [<c0154fe2>] filp_open+0x22/0x50
[42949831.710000] [<c01551ad>] get_unused_fd+0x4d/0xb0
[42949831.710000] [<c01552c1>] do_sys_open+0x41/0xd0
[42949831.710000] [<c0102f49>] syscall_call+0x7/0xb
[42949831.710000] Trying to fix it up, but a reboot is needed
[42949831.710000] ------------[ cut here ]------------
[42949831.710000] kernel BUG at mm/filemap.c:480!
[42949831.710000] invalid operand: 0000 [#1]
[42949831.710000] last sysfs file: /devices/pci0000:00/0000:00:11.0/i2c-0/name
[42949831.710000] Modules linked in: loop dm_mod i2c_viapro i2c_core
[42949831.710000] CPU: 0
[42949831.710000] EIP: 0060:[<c013763d>] Tainted: G B VLI
[42949831.710000] EFLAGS: 00010246 (2.6.14-mm2)
[42949831.710000] EIP is at unlock_page+0xd/0x30
[42949831.710000] eax: 00000000 ebx: c1043220 ecx: c03cad30 edx: c1652218
[42949831.710000] esi: 00000001 edi: 00000000 ebp: 00000006 esp: c26c298c
[42949831.710000] ds: 007b es: 007b ss: 0068
[42949831.710000] Process mdadm (pid: 785, threadinfo=c26c2000 task=c6f64050)
[42949831.710000] Stack: c1043220 c013f5e1 0000000e 00007000 f2fb87ec 00000000 00000000 00000007
[42949831.710000] 00000000 c1043220 c1045260 c1040240 c1040260 c1042820 c1042800 c10415e0
[42949831.710000] 00007000 00000000 00000000 00000000 00000006 f2fb8810 00000001 00006fff
[42949831.710000] Call Trace:
[42949831.710000] [<c013f5e1>] truncate_inode_pages_range+0x121/0x310
[42949831.710000] [<c01a2ac0>] reiser4_invalidate_pages+0x90/0xc0
[42949831.710000] [<c01ba5ed>] kill_hook_extent+0x17d/0x5b0
[42949831.710000] [<c01ac29c>] plugin_by_unsafe_id+0x1c/0x110
[42949831.710000] [<c01ba470>] kill_hook_extent+0x0/0x5b0
[42949831.710000] [<c01cd7fd>] call_kill_hooks+0x9d/0xc0
[42949831.710000] [<c01cd8f0>] kill_head+0x0/0x40
[42949831.710000] [<c01cdf76>] prepare_for_compact+0x536/0x540
[42949831.710000] [<c0192a0e>] lock_tail+0x1e/0x40
[42949831.710000] [<c01ac29c>] plugin_by_unsafe_id+0x1c/0x110
[42949831.710000] [<c01cd820>] kill_units+0x0/0x80
[42949831.710000] [<c01cd8f0>] kill_head+0x0/0x40
[42949831.710000] [<c0192933>] longterm_unlock_znode+0xa3/0x160
[42949831.710000] [<c0192bf3>] longterm_lock_znode+0x163/0x250
[42949831.710000] [<c018ce4b>] jload_gfp+0x5b/0x140
[42949831.710000] [<c01cdfb1>] kill_node40+0x31/0xc0
[42949831.710000] [<c0191a88>] carry_cut+0x48/0x60
[42949831.710000] [<c018f458>] carry_on_level+0x38/0xc0
[42949831.710000] [<c018f302>] carry+0x82/0x1a0
[42949831.710000] [<c018f704>] add_carry+0x24/0x40
[42949831.710000] [<c018f51d>] post_carry+0x3d/0xa0
[42949831.710000] [<c0194886>] kill_node_content+0xf6/0x160
[42949831.710000] [<c0194e39>] cut_tree_worker_common+0x159/0x350
[42949831.710000] [<c0194ce0>] cut_tree_worker_common+0x0/0x350
[42949831.710000] [<c0195155>] cut_tree_object+0x125/0x240
[42949831.710000] [<c0196d29>] reiser4_grab_reserved+0x49/0x190
[42949831.710000] [<c018d04f>] jrelse+0xf/0x20
[42949831.710000] [<c01bfc81>] cut_file_items+0xb1/0x180
[42949831.710000] [<c01a0108>] add_empty_leaf+0xa8/0x220
[42949831.710000] [<c01bfdab>] shorten_file+0x4b/0x260
[42949831.710000] [<c01bfb40>] update_file_size+0x0/0x90
[42949831.710000] [<c01c2f03>] setattr_truncate+0x73/0x210
[42949831.710000] [<c01ad384>] permission_common+0x24/0x40
[42949831.710000] [<c01ad360>] permission_common+0x0/0x40
[42949831.710000] [<c0162b78>] permission+0x48/0x90
[42949831.710000] [<c0163119>] __link_path_walk+0x89/0xc40
[42949831.710000] [<c01c30fe>] setattr_unix_file+0x5e/0xc0
[42949831.710000] [<c016f58f>] notify_change+0xcf/0x2d5
[42949831.710000] [<c0163d3f>] link_path_walk+0x6f/0xe0
[42949831.710000] [<c0153e9b>] do_truncate+0x4b/0x70
[42949831.710000] [<c0162b78>] permission+0x48/0x90
[42949831.710000] [<c0164704>] may_open+0x184/0x1d0
[42949831.710000] [<c01647d5>] open_namei+0x85/0x560
[42949831.710000] [<c0154fe2>] filp_open+0x22/0x50
[42949831.710000] [<c01551ad>] get_unused_fd+0x4d/0xb0
[42949831.710000] [<c01552c1>] do_sys_open+0x41/0xd0
[42949831.710000] [<c0102f49>] syscall_call+0x7/0xb
[42949831.710000] Code: e8 69 ff ff ff 89 da b9 20 6f 13 c0 c7 04 24 02 00 00 00 e8 e6 77 22 00 83 c4 20 5b c3 90 53 89 c3 0f ba 30 00 19 c0 85 c0 75 08 <0f> 0b e0 01 f8 6a 38 c0 89 d8 e8 34 ff ff ff 89 da 31 c9 5b e9
[42949831.710000]
--
Humilis IT Services and Solutions
http://www.humilis.net
next prev parent reply other threads:[~2005-11-17 7:50 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-05 0:46 RAID1 ramdisk patch Wilco Baan Hofman
2005-09-05 1:27 ` Neil Brown
2005-09-05 7:40 ` Wilco Baan Hofman
2005-11-16 13:36 ` segfault mdadm --write-behind, 2.6.14-mm2 (was: Re: RAID1 ramdisk patch) Sander
2005-11-16 22:20 ` Andrew Morton
2005-11-16 23:08 ` Neil Brown
2005-11-17 7:50 ` Sander [this message]
2005-11-17 10:12 ` Sander
2005-11-17 10:15 ` Sander
2005-11-21 23:07 ` Please help me understand ->writepage. Was " Neil Brown
2005-11-21 23:30 ` Jeff Garzik
2005-11-21 23:51 ` Andrew Morton
2005-11-22 3:12 ` Neil Brown
2005-11-22 3:47 ` Andrew Morton
2005-11-22 10:34 ` Sander
2005-11-24 5:41 ` Please help me understand reiser4_writepage. " Neil Brown
2005-11-22 12:00 ` Please help me understand ->writepage. " Anton Altaparmakov
2005-11-24 5:29 ` Neil Brown
2005-11-18 14:18 ` segfault mdadm --write-behind, 2.6.14-mm2 Vladimir V. Saveliev
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20051117075041.GA5563@favonius \
--to=sander@humilis.net \
--cc=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=neilb@suse.de \
--cc=reiserfs-dev@namesys.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.