I'm not sure whether it's an issue or not anymore. I discontinued using gfs2 because I could not get the kernel panic to go away. 


Dave Spano 


----- Original Message -----

From: "Christopher M. Penalver" <email address hidden> 
To: <email address hidden> 
Sent: Monday, December 30, 2013 4:12:56 PM 
Subject: [Bug 1020207] Re: gfs2 kernel oops when deleting file as first action after mounting 

Dave Spano, this bug was reported a while ago and there hasn't been any 
activity in it recently. We were wondering if this is still an issue? If 
so, could you please test for this with the latest development release 
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com 
/daily-live/current/ . 

If it remains an issue, could you please run the following command in 
the development release from a Terminal 
(Applications->Accessories->Terminal), as it will automatically gather 
and attach updated debug information to this report: 

apport-collect -p linux <replace-with-bug-number> 

If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: 
kernel-fixed-upstream 
kernel-fixed-upstream-VERSION-NUMBER 

where VERSION-NUMBER is the version number of the kernel you tested. For example: 
kernel-fixed-upstream-v3.13-rc6 

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: 
needs-upstream-testing 

If the mainline kernel does not fix this bug, please add the following tags: 
kernel-bug-exists-upstream 
kernel-bug-exists-upstream-VERSION-NUMBER 

As well, please remove the tag: 
needs-upstream-testing 

Once testing of the upstream kernel is complete, please mark this bug's 
Status as Confirmed. Please let us know your results. Thank you for your 
understanding. 

** Changed in: linux (Ubuntu) 
Status: In Progress => Incomplete 

** Changed in: linux (Ubuntu) 
Assignee: Andy Whitcroft (apw) => (unassigned) 

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report. 
https://bugs.launchpad.net/bugs/1020207 

Title: 
gfs2 kernel oops when deleting file as first action after mounting 

Status in “linux” package in Ubuntu: 
Incomplete 

Bug description: 
I have an active/active drbd cluster with pacemaker running on cman. 
If I create a file on the shared gfs2 file system on one node, then 
try to delete it on the other, I'm receiving this kernel panic. I get 
the same error on both nodes, so it's not specific to either machine. 

Jul 2 12:54:37 ha1 lrmd: [40983]: info: operation monitor[35] on nova-volumes:0 for client 40986: pid 2385 exited with return code 0 
Jul 2 12:54:43 ha1 lrmd: [40983]: debug: rsc:p_gfsd:1 monitor[63] (pid 2459) 
Jul 2 12:54:43 ha1 lrmd: [40983]: info: operation monitor[63] on p_gfsd:1 for client 40986: pid 2459 exited with return code 0 
Jul 2 12:54:49 ha1 kernel: [238066.234067] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 
Jul 2 12:54:49 ha1 kernel: [238066.236034] IP: [<ffffffffa037c00a>] gfs2_unlink+0x8a/0x220 [gfs2] 
Jul 2 12:54:49 ha1 kernel: [238066.237305] PGD 40ca9f067 PUD 40de7b067 PMD 0 
Jul 2 12:54:49 ha1 kernel: [238066.237336] Oops: 0000 [#1] SMP 
Jul 2 12:54:49 ha1 kernel: [238066.237336] CPU 7 
Jul 2 12:54:49 ha1 kernel: [238066.237336] Modules linked in: gfs2 drbd lru_cache ipmi_si mpt2sas scsi_transport_sas raid_class mptctl mptbase ipmi_devintf ipmi_msghandler dell_rbu kvm_amd kvm dlm configfs vesafb ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 bonding psmouse sp5100_tco dcdbas tpm_tis joydev serio_raw i2c_piix4 amd64_edac_mod k10temp edac_core acpi_power_meter edac_mce_amd mac_hid lp parport usbhid hid ses enclosure igb megaraid_sas dca bnx2 [last unloaded: ipmi_si] 
Jul 2 12:54:49 ha1 kernel: [238066.237336] 
Jul 2 12:54:49 ha1 kernel: [238066.237336] Pid: 2544, comm: rm Not tainted 3.2.0-26-generic #41-Ubuntu Dell Inc. PowerEdge R515/03X0MN 
Jul 2 12:54:49 ha1 kernel: [238066.237336] RIP: 0010:[<ffffffffa037c00a>] [<ffffffffa037c00a>] gfs2_unlink+0x8a/0x220 [gfs2] 
Jul 2 12:54:49 ha1 kernel: [238066.237336] RSP: 0018:ffff8801fe13fd28 EFLAGS: 00010296 
Jul 2 12:54:49 ha1 kernel: [238066.380032] RAX: 0000000000000000 RBX: ffff880410faa080 RCX: ffff8801fe13fd40 
Jul 2 12:54:49 ha1 kernel: [238066.380032] RDX: 0000000000000000 RSI: 0000000000012346 RDI: ffff88040c8b1440 
Jul 2 12:54:49 ha1 kernel: [238066.380032] RBP: ffff8801fe13fe38 R08: 4000000000000000 R09: 0000000000000000 
Jul 2 12:54:49 ha1 kernel: [238066.380032] R10: fde3ec81bcd7720a R11: 0000000000000008 R12: ffff8801ffc709c0 
Jul 2 12:54:49 ha1 kernel: [238066.380032] R13: ffff8801fe13fd80 R14: ffff8803f479d140 R15: ffff88040c8b1000 
Jul 2 12:54:49 ha1 kernel: [238066.380032] FS: 00007fa1b5055700(0000) GS:ffff88041fa20000(0000) knlGS:0000000000000000 
Jul 2 12:54:49 ha1 kernel: [238066.380032] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 
Jul 2 12:54:49 ha1 kernel: [238066.380032] CR2: 0000000000000018 CR3: 00000003f207c000 CR4: 00000000000006e0 
Jul 2 12:54:49 ha1 kernel: [238066.380032] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 
Jul 2 12:54:49 ha1 kernel: [238066.380032] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 
Jul 2 12:54:49 ha1 kernel: [238066.380032] Process rm (pid: 2544, threadinfo ffff8801fe13e000, task ffff8802044b5bc0) 
Jul 2 12:54:49 ha1 kernel: [238066.380032] Stack: 
Jul 2 12:54:49 ha1 kernel: [238066.380032] 0000000000000003 ffff8801fa72e260 ffff8801fe13fd58 ffff8801fe13fd40 
Jul 2 12:54:49 ha1 kernel: [238066.380032] ffff8801fe13fd40 ffff8801fa72e218 ffff88020476a680 0000000000000001 
Jul 2 12:54:49 ha1 kernel: [238066.380032] 0000000000000000 0000000000000000 ffffffffa037bfda ffff8801fe13fd80 
Jul 2 12:54:49 ha1 kernel: [238066.380032] Call Trace: 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffffa037bfda>] ? gfs2_unlink+0x5a/0x220 [gfs2] 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffffa037bff4>] ? gfs2_unlink+0x74/0x220 [gfs2] 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff8129cb2c>] ? security_inode_permission+0x1c/0x30 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff81184e70>] vfs_unlink.part.26+0x80/0xf0 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff81184f1c>] vfs_unlink+0x3c/0x60 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff8118758a>] do_unlinkat+0x1aa/0x1d0 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff8117ce5a>] ? sys_newfstatat+0x2a/0x40 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff811880d2>] sys_unlinkat+0x22/0x40 
Jul 2 12:54:49 ha1 kernel: [238066.380032] [<ffffffff81661fc2>] system_call_fastpath+0x16/0x1b 
Jul 2 12:54:49 ha1 kernel: [238066.380032] Code: 00 00 49 83 c5 40 31 d2 4c 89 e9 be 01 00 00 00 e8 fc 1e ff ff 48 8b b3 28 02 00 00 4c 89 ff e8 ad 7e 00 00 48 8d 8d 08 ff ff ff <48> 8b 78 18 31 d2 be 01 00 00 00 48 83 e9 80 e8 d2 1e ff ff 48 
Jul 2 12:54:49 ha1 kernel: [238066.380032] RIP [<ffffffffa037c00a>] gfs2_unlink+0x8a/0x220 [gfs2] 
Jul 2 12:54:49 ha1 kernel: [238066.380032] RSP <ffff8801fe13fd28> 
Jul 2 12:54:49 ha1 kernel: [238066.380032] CR2: 0000000000000018 
Jul 2 12:54:49 ha1 kernel: [238066.394510] ---[ end trace 2009fc896a3dd969 ]--- 

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