Bug 206295

Summary:	GFS2: bad spinlock magic, gfs2_mmap
Product:	Red Hat Enterprise Linux 5	Reporter:	Jeremy Katz <katzj>
Component:	kernel	Assignee:	Russell Cattelan <cattelan>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.0	CC:	cluster-maint, davej, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	5.0.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-12-19 18:33:24 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	220052

Description Jeremy Katz 2006-09-13 15:06:31 UTC

New oops, current rawhide (2.6.17-1.2630)

Kernel BUG at lib/list_debug.c:26─────────────────────────────────────┘         
invalid opcode: 0000 [1] SMP                                                    
last sysfs file: /block/xvda/dev                                                
CPU 0                                                                           
Modules linked in: dm_emc dm_round_robin dm_multipath dm_snapshot dm_mirror
dm_zero dm_mod xfs jfs reiserfs lock_nolock gfs2 ext3 jbd msdos raid456 xor
raid1 raid0 xenblk xennet iscsi_tcp libiscsi scsi_transport_iscsi sr_mod sd_mod
scsi_mod ide_cd cdrom ipv6 squashfs pcspkr loop nfs nfs_acl fscache lockd sunrpc
vfat fat cramfs
Pid: 601, comm: build-locale-ar Not tainted 2.6.17-1.2630.fc6xen #1
RIP: e030:[<ffffffff80330d00>]  [<ffffffff80330d00>] __list_add+0x24/0x68
RSP: e02b:ffff88000b847cd8  EFLAGS: 00010286
RAX: 0000000000000058 RBX: ffff88000b3494b0 RCX: ffff88000b846000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88000b847d18 R08: ffffffff804c88b8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88000b847d18
R13: ffffc2000010ab40 R14: 0000000000000000 R15: ffff88000b349490
FS:  0000000000000000(0063) GS:ffffffff8064e000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000
Process build-locale-ar (pid: 601, threadinfo ffff88000b846000, task
ffff880017524820)
Stack:  ffff880014ab0b50  ffffc200000ba000  ffff88000b847cf8  ffffffff882daf18 
 ffffc200000ba000  000002db000001f6  0000000000000000  0000000000000000 
 ffff88000b3494b0  ffffc2000010ab60 
Call Trace:
 [<ffffffff882daf18>] :gfs2:databuf_lo_before_commit+0xd3/0x522
 [<ffffffff882d9717>] :gfs2:gfs2_log_flush+0x11e/0x2d5
 [<ffffffff882eae25>] :gfs2:gfs2_trans_end+0x13f/0x176
 [<ffffffff882d6f07>] :gfs2:gfs2_glock_nq_atime+0x213/0x2a2
 [<ffffffff882dfaca>] :gfs2:gfs2_mmap+0x36/0x83
 [<ffffffff882d6e46>] :gfs2:gfs2_glock_nq_atime+0x152/0x2a2
 [<ffffffff8020de6b>] do_mmap_pgoff+0x49f/0x773
 [<ffffffff80262079>] _spin_unlock_irq+0x9/0x10
 [<ffffffff80223c42>] sys_mmap+0x89/0xc1
 [<ffffffff8025da05>] tracesys+0xa7/0xb2


Code: 0f 0b 68 c8 d8 47 80 c2 1a 00 48 8b 55 00 48 39 da 74 1b 48 
RIP  [<ffffffff80330d00>] __list_add+0x24/0x68
 RSP <ffff88000b847cd8>
 <0>BUG: spinlock cpu recursion on CPU#0, gfs2_logd/586 (Not tainted)
 lock: ffffc2000010aae0, .magic: dead4ead, .owner: build-locale-ar/601,
.owner_cpu: 0

Call Trace:
 [<ffffffff8020722e>] _raw_spin_lock+0x58/0xeb
 [<ffffffff882d920e>] :gfs2:gfs2_ail1_empty+0x23/0x9f
 [<ffffffff80298f07>] keventd_create_kthread+0x0/0x66
 [<ffffffff882ce250>] :gfs2:gfs2_logd+0x4b/0x10e
 [<ffffffff802839f3>] __wake_up_common+0x3e/0x68
 [<ffffffff80298f07>] keventd_create_kthread+0x0/0x66
 [<ffffffff882ce205>] :gfs2:gfs2_logd+0x0/0x10e
 [<ffffffff802335c8>] kthread+0xfe/0x132
 [<ffffffff8025e238>] child_rip+0xa/0x12
 [<ffffffff80298f07>] keventd_create_kthread+0x0/0x66
 [<ffffffff8025fee7>] thread_return+0x0/0xec
 [<ffffffff802334ca>] kthread+0x0/0x132
 [<ffffffff8025e22e>] child_rip+0x0/0x12

Comment 1 Kiersten (Kerri) Anderson 2006-11-22 21:57:59 UTC

Installs need to work on gfs2 for GA.

Comment 2 Rob Kenna 2006-11-25 21:35:14 UTC

Agreed.  This needs to be root installable for GA even though it's tech preview.

Comment 3 Russell Cattelan 2006-12-18 21:49:51 UTC

I have been unable to reproduce this panic with the current
gfs2 code in RHEL5.

Quite a number of bugs have been fixed in GFS2 some of them mmap releated
so it is quite possible this problem has been fixed.

Marking with needinfo for now.

Comment 4 Jeremy Katz 2006-12-19 18:33:24 UTC

Yeah, this one was gotten past a while ago and then bug 215088 was hit