Hi Joseph,
Is the following patch for this issue?
```
commit 3bb8b653c86f6b1d2cc05aa1744fed4b18f99485
Author: Joseph Qi <joseph.qi at huawei.com>
Date: Mon Sep 19 14:44:33 2016 -0700
ocfs2: fix double unlock in case retry after free truncate log
If ocfs2_reserve_cluster_bitmap_bits() fails with ENOSPC, it will try to
free truncate log and then retry. Since ocfs2_try_to_free_truncate_log
will lock/unlock global bitmap inode, we have to unlock it before
calling this function. But when retry reserve and it fails with no /*
reserve ->
deserve, i think */
global bitmap inode lock taken, it will unlock again in error handling
branch and BUG.
This issue also exists if no need retry and then ocfs2_inode_lock fails.
So fix it.
Fixes: 2070ad1aebff ("ocfs2: retry on ENOSPC if sufficient space in
truncate log")
Link: http://lkml.kernel.org/r/57D91939.6030809 at huawei.com
Signed-off-by: Joseph Qi <joseph.qi at huawei.com>
Signed-off-by: Jiufei Xue <xuejiufei at huawei.com>
Cc: Mark Fasheh <mfasheh at suse.de>
Cc: Joel Becker <jlbec at evilplan.org>
Cc: Junxiao Bi <junxiao.bi at oracle.com>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
```
If so, Gerhard, try to backport this fix.
Eric
On 10/26/2016 05:29 AM, Gerhard Mack wrote:> Hello,
>
> I had a server reboot on me and I'm at a loss as to what caused this
> crash. Please keep in mind this server is mission critical and my
> options for testing are rather limited.
>
> Anyone have any ideas?
> Gerhard
>
>
> Oct 25 15:38:38 172.28.23.18 kernel: [ 180.900950] o2net: Connected to
> node monmailcl01 (num 1) at 10.45.0.11:7777
> Oct 25 15:38:39 172.28.23.18 kernel: [ 181.455469] o2dlm: Node 1 joins
> domain 85372A5B9E7C4C2C95F1E9922D5A83AF ( 1 2 ) 2 nodes
> Oct 25 15:38:40 172.28.23.18 kernel: [ 182.972901] o2dlm: Node 1 joins
> domain 490180441A5248339D36ECD96514427C ( 1 2 ) 2 nodes
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.410379] ------------[ cut
> here ]------------
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.410452] kernel BUG at
> fs/ocfs2/dlmglue.c:780!
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.410515] invalid opcode: 0000
> [#1] SMP
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.410576] Modules linked in:
> xt_multiport iptable_filter ocfs2 quota_tree xt_tcpudp iptable_mangle
> xt_mark
> ip_tables x_tables ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm
> ocfs2_nodemanager ocfs2_stackglue ib_iser rdma_cm iw_cm ib_cm ib_core
> configfs iscsi_tcp
> libiscsi_tcp libiscsi scsi_transport_iscsi bonding ext4 crc16 jbd2
> mbcache coretemp kvm_intel kvm snd_pcm irqbypass snd_timer snd soundcore
> pcspkr
> iTCO_wdt iTCO_vendor_support dcdbas evdev shpchp serio_raw i2c_i801
> i2c_core acpi_cpufreq lpc_ich mfd_core tpm_tis tpm i5100_edac button
> edac_core
> processor loop autofs4 xfs crc32c_generic libcrc32c raid1 md_mod sg
> sd_mod hid_generic usbhid hid ahci libahci libata e1000e scsi_mod
> uhci_hcd ehci_pci
> ehci_hcd usbcore ptp psmouse pps_core usb_common r8169 mii
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] CPU: 3 PID: 3563
> Comm: imap Not tainted 4.7.6 #8
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] Hardware name:
> Dell CS24-SC /CS24-SC , BIOS S45_3A20
> 01/21/2009
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] task:
> ffff8800bb35cd00 ti: ffff8800bb2d8000 task.ti: ffff8800bb2d8000
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RIP:
> 0010:[<ffffffffa0535365>] [<ffffffffa0535365>]
> __ocfs2_cluster_unlock.isra.34+0x4a/0x92 [ocfs2]
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RSP:
> 0018:ffff8800bb2dbbe0 EFLAGS: 00010046
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RAX:
> 0000000000000246 RBX: ffff8800bbbd7a18 RCX: 000000000005a25c
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RDX:
> 0000000000000000 RSI: ffff8800bbbd7a18 RDI: ffff8800bbbd7a84
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RBP:
> ffff8800bbbd7a84 R08: ffff8800bb2d8000 R09: 0000000000000001
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] R10:
> ffff8800bb2dbbd8 R11: 000000000000000b R12: ffff88041782b000
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] R13:
> 0000000000000246 R14: 0000000000000003 R15: 0000000000000003
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] FS:
> 00007fe9a96c2700(0000) GS:ffff88043fcc0000(0000) knlGS:0000000000000000
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] CS: 0010 DS: 0000
> ES: 0000 CR0: 0000000080050033
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] CR2:
> 000056169b47e000 CR3: 00000000bb112000 CR4: 00000000000406e0
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] Stack:
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] ffff88042d757c00
> 0000000000000000 ffff88042a0e1b40 ffff8800ba8194d8
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] 0000000000000000
> ffffffffa0528ce0 ffff88042a0e1b78 ffff8800ba8194d8
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] 0000000000000000
> ffff88042a0e1b40 ffff88042a0e1b40 ffff8800ba8194d8
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] Call Trace:
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffffa0528ce0>]
> ? ocfs2_dentry_attach_lock+0x2c2/0x3f2 [ocfs2]
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffffa0548a8d>]
> ? ocfs2_lookup+0x17c/0x268 [ocfs2]
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff81140925>]
> ? lookup_slow+0xcf/0x104
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff811422fa>]
> ? walk_component+0x69/0x12b
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff81142890>]
> ? path_lookupat+0x7d/0xfe
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff81143f8c>]
> ? filename_lookup+0x78/0xf5
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff8112a9f9>]
> ? kmem_cache_alloc+0x99/0x124
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff8113c544>]
> ? vfs_fstatat+0x46/0x83
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff8113c544>]
> ? vfs_fstatat+0x46/0x83
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff8113c5ca>]
> ? SYSC_newstat+0x10/0x27
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339]
[<ffffffff813f831b>]
> ? entry_SYSCALL_64_fastpath+0x13/0x8f
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] Code: db 75 02 0f 0b
> 41 83 fe 03 49 89 c5 74 16 41 83 fe 05
> 75 20 8b 53 5c 85 d2 75 02 0f 0b ff ca 89 53 5c eb 12 8b 53 58 85 d2 75
> 02 <0f> 0b ff ca 89 53 58 eb 02 0f 0b f6 43 30 04 74 24 8a 43 62 3c
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RIP
> [<ffffffffa0535365>] __ocfs2_cluster_unlock.isra.34+0x4a/0x92 [ocfs2]
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] RSP
<ffff8800bb2dbbe0>
> Oct 25 15:40:04 172.28.23.18 kernel: [ 266.414339] ---[ end trace
> 4eaf20faca7a8f81 ]---
>
>
> The server hard rebooted after this..
>