Messages in this thread | | | From | "Timo Hennerich" <> | Subject | Re: Strange memory leak in 2.6.x | Date | Mon, 14 Mar 2005 13:27:18 +0100 |
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Hello,
my brother got ill this weekend, so I'll continue this task:
> > See http://download.hennerich.de/kallsyms_20050312_1630.gz > > Great, just so that there is no confusion, I still need a new run > of /proc/page_owner, the shorter time before the lockup the better.
The machine locked up this morning again. See
http://download.hennerich.de/page_owner_sorted_20050314_0740.bz2
for one of the last results of /proc/page_owner. It seems to be obvious that the memory-leak seems to be the first entry:
$ less page_owner_sorted_20050314_0740.bz2 881397 times: Page allocated via order 0 [0xc013962b] find_or_create_page+91 [0xf8aa9955] +613 [0xf8aaa606] +1366 [0xc015765c] vfs_write+172 [0xc015776c] sys_write+60 [0xc0103879] sysenter_past_esp+82
13358 times: Page allocated via order 0 [0xc014817a] do_wp_page+282 [0xc014914e] handle_mm_fault+302 [0xc0113625] do_page_fault+501 [0xc0104a7b] error_code+43
The sorted table of /proc/kallsyms looks like this:
... f8aa90e0 t reiserfs_commit_page [reiserfs] f8aa92e0 t reiserfs_submit_file_region_for_write [reiserfs] f8aa9550 t reiserfs_check_for_tail_and_convert [reiserfs] f8aa96f0 t reiserfs_prepare_file_region_for_write [reiserfs] f8aaa0b0 t reiserfs_file_write [reiserfs] f8aaa770 t reiserfs_aio_write [reiserfs] f8aaa779 t .text.lock.file [reiserfs] f8aaa7c0 t reiserfs_dir_fsync [reiserfs] f8aaa7f0 t reiserfs_readdir [reiserfs] f8aaad70 t make_empty_dir_item_v1 [reiserfs] f8aaae50 t make_empty_dir_item [reiserfs] f8aaafc0 t create_virtual_node [reiserfs] f8aab520 t check_left [reiserfs] f8aab670 t check_right [reiserfs] f8aab7c0 t get_num_ver [reiserfs] ...
So I guess that we have a problem with the reiser filesystem?? We are using reiserfs 3.6...
Perhaps it's important to notice that the operating system
- is no fresh installation of SuSE 9.2, but was updated from SuSE 8.2 - is installed on that special hardware via a restore with the software Mondo-Rescue v2.03
Unfortunately we were not able up to now to reproduce the bug with identical hardware and simulated disk-io. Only the production environment triggers the bug.
0xf8aa9955 - 613 = 0xf8aa96f0: reiserfs_prepare_file_region_for_write 0xf8aaa606 - 1366 = 0xf8aaa0b0: reiserfs_file_write
Wild guessing: Is "reiserfs_prepare_file_region_for_write" used to append new output to existent files only - and do we have a memory leak inside of this function? The production machine is used as loghost and syslog is writing several 100MB logfiles each day - which would be a difference to the test hardware.
Best regards Timo -- T+T Hennerich GmbH --- Zettachring 12a --- 70567 Stuttgart Fon:+49(711)720714-0 Fax:+49(711)720714-44 Vanity:+49(700)HENNERICH UNIX - Linux - Java - C Entwicklung/Beratung/Betreuung/Schulung http://www.hennerich.de/
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