|Summary:||GFS2: deadlock running d_rwdirectlarge|
|Product:||Red Hat Enterprise Linux 5||Reporter:||Nate Straz <nstraz>|
|Component:||kernel||Assignee:||Don Zickus <dzickus>|
|Status:||CLOSED ERRATA||QA Contact:||Dean Jansa <djansa>|
|Version:||5.0||CC:||jbacik, kanderso, lwang, swhiteho, wcheng|
|Fixed In Version:||RHBA-2007-0959||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2007-11-07 19:46:32 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Cloudforms Team:||---||Target Upstream Version:|
Description Nate Straz 2007-04-11 19:40:29 UTC
Description of problem: While running dd_io on GFS2 upstream we hit a deadlock. After triage we determined that there was a deadlock between a page lock and a glock. d_doio D E010703A 0 8244 8242 8245 (NOTLB) d430fc48 00000082 00000000 e010703a 00000018 00000000 e0071118 d11a6580 00000007 dd1335b0 075fb69c 00004ded 00000a35 dd1336bc c13f4c60 00000000 d139bc80 d430fc8c 00000082 de22e6f8 00000805 00000018 00000246 d430fc74 Call Trace: [<e010703a>] dlm_lock+0x104/0x110 [dlm] [<e0071118>] gdlm_ast+0x0/0x2 [lock_dlm] [<e052ae03>] holder_wait+0x5/0x8 [gfs2] [<c040afb0>] __wait_on_bit+0x33/0x58 [<e052adfe>] holder_wait+0x0/0x8 [gfs2] [<e052adfe>] holder_wait+0x0/0x8 [gfs2] [<c040b038>] out_of_line_wait_on_bit+0x63/0x6b [<c01297da>] wake_bit_function+0x0/0x3c [<e052adfa>] wait_on_holder+0x2f/0x33 [gfs2] [<e052bc08>] glock_wait_internal+0xd5/0x1ec [gfs2] [<e052b93c>] run_queue+0x28f/0x335 [gfs2] [<e052be8e>] gfs2_glock_nq+0x16f/0x1a6 [gfs2] [<e052cd74>] gfs2_glock_nq_atime+0xdb/0x2cf [gfs2] [<e0533cc8>] gfs2_prepare_write+0x50/0x237 [gfs2] [<c0137335>] add_to_page_cache+0x60/0x70 [<e0533c78>] gfs2_prepare_write+0x0/0x237 [gfs2] [<c01384a2>] generic_file_buffered_write+0x25b/0x60f [<c013816c>] generic_file_direct_write+0x5c/0x137 [<c0138c8e>] __generic_file_aio_write_nolock+0x438/0x55a [<c0138e05>] generic_file_aio_write+0x55/0xb3 [<e052c0de>] gfs2_holder_uninit+0xb/0x1b [gfs2] [<e05350e4>] gfs2_open+0xef/0x119 [gfs2] [<c0151551>] do_sync_write+0xc7/0x10a [<c015047e>] nameidata_to_filp+0x24/0x33 [<c01297a5>] autoremove_wake_function+0x0/0x35 [<c015148a>] do_sync_write+0x0/0x10a [<c0151cb4>] vfs_write+0x8a/0x10c [<c0152223>] sys_write+0x41/0x67 lock_dlm1 D 00000086 0 7049 7 7050 3154 (L-TLB) d48d1e4c 00000046 d4ffd5b0 00000086 cf88ffa8 c10bb840 ffffffff 40000004 00000009 d4ffd5b0 07625434 00004ded 00001ed8 d4ffd6bc c13f4c60 00000000 dd4a9580 c10bb840 df27aba4 c13f5120 df27aba4 c01fe5e5 dd4ed500 c13f4c60 Call Trace: [<c01fe5e5>] generic_unplug_device+0x15/0x21 [<c040ad29>] io_schedule+0x22/0x2c [<c013715e>] sync_page+0x0/0x3b [<c0137196>] sync_page+0x38/0x3b [<c040aeea>] __wait_on_bit_lock+0x2a/0x52 [<c0137150>] __lock_page+0x58/0x5e [<c01297da>] wake_bit_function+0x0/0x3c [<c013d839>] truncate_inode_pages_range+0x203/0x258 [<c040a173>] __sched_text_start+0x14b/0x7c4 [<c013d8a5>] truncate_inode_pages+0x17/0x1a [<e052c779>] inode_go_inval+0x40/0x4b [gfs2] [<e052b3dc>] xmote_bh+0xdb/0x250 [gfs2] [<e052bac5>] gfs2_glock_cb+0xae/0x11c [gfs2] [<c01298fb>] remove_wait_queue+0xc/0x34 [<e007286f>] gdlm_thread+0x5af/0x5fc [lock_dlm] [<c0115c28>] default_wake_function+0x0/0xc [<e00722c0>] gdlm_thread+0x0/0x5fc [lock_dlm] [<c01296dc>] kthread+0xb0/0xd8 [<c012962c>] kthread+0x0/0xd8 [<c0103d27>] kernel_thread_helper+0x7/0x10 Version-Release number of selected component (if applicable): 2.6.21-rc6 How reproducible: likely Steps to Reproduce: 1. run dd_io -S REG
Comment 1 Abhijith Das 2007-04-11 21:39:06 UTC
Created attachment 152324 [details] Patch that was applied to gfs2 when we ran this test.
Comment 2 RHEL Product and Program Management 2007-04-13 18:25:20 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Comment 3 Steve Whitehouse 2007-04-18 15:14:52 UTC
Created attachment 152913 [details] A new patch to fix the bug in prepare_write's locking. N.B. This is for RHEL 5.1 only, there is a different fix for upstream which we are unable to use in RHEL since its to invasive of the VFS layer. This is a clean up of the previous patch taking into account all the comments in last weeks meeting. Please shout if you think I've missed something.
Comment 4 Wendy Cheng 2007-04-18 15:58:34 UTC
ok, look much better than last week's hack. I'll ack.
Comment 5 Steve Whitehouse 2007-05-10 09:52:59 UTC
Created attachment 154455 [details] Updated patch to fix this bug This is slightly updated so it applies against current RHEL 5.1 Since Don is going on holiday, I'm intending to send this today on the basis that we only have today & tomorrow left to get it in to RHEL 5.1 before he leaves. If it turns out that this doesn't entirely fix the problem (very unlikely I think since we've tested this fix at the meeting and the patch is identical modulo the cleanup), please open another bz rather than pull this one back from POST.
Comment 6 Don Zickus 2007-05-11 22:06:26 UTC
in 2.6.18-19.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 9 errata-xmlrpc 2007-11-07 19:46:32 UTC
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2007-0959.html