On Mon, 2012-07-30 at 13:47 +0200, William Dauchy wrote:
> Hi Trond,
>
> I encountered an oops regarding wait_for_key_construction on a 3.4.4
> amd64 kernel. The patch b102743 was applied; before digging a bit
> more, I was wondering if there might be another known issue with the
> legacy idmapper I'm using.
>
> Regards,
I've been on vacation for the past 2 weeks, so I'm a bit out of the loop
on what has happened in that time period.
I'm therefore Ccing Bryan in case he knows of anything. Also Ccing the
mailing list...
Cheers
Trond
> Jul 29 22:40:23 10.0.45.252 kernel: BUG: unable to handle kernel NULL
> pointer dereference at 0000000000000070
> Jul 29 22:40:23 10.0.45.252 kernel: IP: [<ffffffff811a4a18>]
> wait_for_key_construction+0x28/0x70
> Jul 29 22:40:23 10.0.45.252 kernel: PGD 2bf8de000
> Jul 29 22:40:23 10.0.45.252 kernel: Oops: 0000 [#1] PREEMPT SMP
> Jul 29 22:40:23 10.0.45.252 kernel: CPU 23
> Jul 29 22:40:23 10.0.45.252 kernel: Pid: 25735, comm: kworker/23:2
> Tainted: G W 3.4.4-grsec-simplehosting-ed05924 #1 Dell Inc.
> C6100 /0D61XP
> Jul 29 22:40:23 10.0.45.252 kernel: RIP: 0010:[<ffffffff811a4a18>]
> [<ffffffff811a4a18>] wait_for_key_construction+0x28/0x70
> Jul 29 22:40:23 10.0.45.252 kernel: RSP: 0018:ffff880b99a15a80 EFLAGS: 00010246
> Jul 29 22:40:23 10.0.45.252 kernel: RAX: ffffffff811a4a70 RBX:
> 0000000000000000 RCX: 0000000000000002
> Jul 29 22:40:23 10.0.45.252 kernel: RDX: ffffffff811a4a60 RSI:
> 0000000000000000 RDI: 0000000000000070
> Jul 29 22:40:23 10.0.45.252 kernel: RBP: ffff8803c915e420 R08:
> ffff88061c877bc1 R09: 0000000000000000
> Jul 29 22:40:23 10.0.45.252 kernel: R10: 0000000050159fb7 R11:
> 0000000000000000 R12: ffffffff816b5e49
> Jul 29 22:40:23 10.0.45.252 kernel: R13: ffff880ba944ca48 R14:
> 0000000000000013 R15: ffff8803c915e423
> Jul 29 22:40:23 10.0.45.252 kernel: FS: 0000000000000000(0000)
> GS:ffff880c3fd60000(0000) knlGS:0000000000000000
> Jul 29 22:40:23 10.0.45.252 kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> 000000008005003b
> Jul 29 22:40:23 10.0.45.252 kernel: CR2: 0000000000000070 CR3:
> 00000000014aa000 CR4: 00000000000007f0
> Jul 29 22:40:23 10.0.45.252 kernel: DR0: 0000000000000000 DR1:
> 0000000000000000 DR2: 0000000000000000
> Jul 29 22:40:23 10.0.45.252 kernel: DR3: 0000000000000000 DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 29 22:40:23 10.0.45.252 kernel: Process kworker/23:2 (pid: 25735,
> threadinfo ffff880b154a0ba0, task ffff880b154a0750)
> Jul 29 22:40:23 10.0.45.252 kernel: Stack:
> Jul 29 22:40:23 10.0.45.252 kernel: 0000000000000000 ffffffff811a512f
> 0000000000000000 ffffffff810df09d
> Jul 29 22:40:23 10.0.45.252 kernel: 0000000000000000 000000000000000e
> ffff880841b54cc0 ffffffff816c88f8
> Jul 29 22:40:23 10.0.45.252 kernel: ffff8803c915e420 ffffffff81184fbb
> 0000000000000013 ffffffff81935c40
> Jul 29 22:40:23 10.0.45.252 kernel: Call Trace:
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff811a512f>] ? request_key+0x5f/0xa0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff810df09d>] ? __kmalloc+0x2d/0x120
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81184fbb>] ?
> nfs_idmap_request_key+0x1ab/0x1c0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81185027>] ?
> nfs_idmap_get_key+0x57/0xd0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff811852ae>] ?
> nfs_map_string_to_numeric+0x3e/0xc0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8118535f>] ?
> nfs_idmap_lookup_id+0x2f/0x80
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81185479>] ?
> nfs_map_name_to_uid+0x39/0x90
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8117dedb>] ?
> decode_getfattr_attrs+0x94b/0xa10
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8117f776>] ? T.1607+0x96/0xe0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8117f852>] ?
> nfs4_xdr_dec_delegreturn+0x72/0x80
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8117f7e0>] ?
> decode_getfattr+0x20/0x20
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8144db39>] ?
> rpcauth_unwrap_resp+0x79/0x80
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8117f7e0>] ?
> decode_getfattr+0x20/0x20
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81445a33>] ?
> call_decode+0x2a3/0x400
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8144cf26>] ?
> __rpc_execute+0x46/0x1b0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81050338>] ?
> process_one_work+0x108/0x3a0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff8144d0c0>] ? rpc_execute+0x30/0x30
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81050a21>] ?
> worker_thread+0x151/0x420
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff810508d0>] ?
> rescuer_thread+0x300/0x300
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff810508d0>] ?
> rescuer_thread+0x300/0x300
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81054e3e>] ? kthread+0x9e/0xb0
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81484774>] ?
> kernel_thread_helper+0x4/0x10
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81482a38>] ?
> retint_restore_args+0x6/0x6
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81054da0>] ?
> kthread_freezable_should_stop+0x60/0x60
> Jul 29 22:40:23 10.0.45.252 kernel: [<ffffffff81484770>] ? gs_change+0xb/0xb
> Jul 29 22:40:23 10.0.45.252 kernel: Code: 00 00 00 40 80 fe 01 53 19
> c9 48 89 fb 48 c7 c0 70 4a 1a 81 f7 d1 48 c7 c2 60 4a 1a 81 83 c1 02
> 48 8d 7f 70 40 84 f6 48 0f 45 d0 <48> 8b 43 70 a8 10 75 20 48 8b 43 70
> a8 20 74 08 8b 83 80 00 00
> Jul 29 22:40:23 10.0.45.252 kernel: RIP [<ffffffff811a4a18>]
> wait_for_key_construction+0x28/0x70
> Jul 29 22:40:23 10.0.45.252 kernel: RSP <ffff880b99a15a80>
> Jul 29 22:40:23 10.0.45.252 kernel: CR2: 0000000000000070
> Jul 29 22:40:23 10.0.45.252 kernel: ---[ end trace 59a8d5be7e929e25 ]---
> Jul 29 22:40:23 10.0.45.252 kernel: BUG: unable to handle kernel
> paging request at fffffffffffffff8
> Jul 29 22:41:23 10.0.45.252 kernel: IP: [<ffffffff81054947>]
> kthread_data+0x7/0x10
> Jul 29 22:41:23 10.0.45.252 kernel: PGD 1517067 PUD 1519067 PMD 0
> Jul 29 22:41:23 10.0.45.252 kernel: Oops: 0000 [#2] PREEMPT SMP
> Jul 29 22:41:23 10.0.45.252 kernel: CPU 23
> Jul 29 22:41:23 10.0.45.252 kernel: Pid: 25735, comm: kworker/23:2
> Tainted: G D W 3.4.4-grsec-simplehosting-ed05924 #1 Dell Inc.
> C6100 /0D61XP
> Jul 29 22:41:23 10.0.45.252 kernel: RIP: 0010:[<ffffffff81054947>]
> [<ffffffff81054947>] kthread_data+0x7/0x10
> Jul 29 22:41:23 10.0.45.252 kernel: RSP: 0018:ffff880b99a15640 EFLAGS: 00010002
> Jul 29 22:41:23 10.0.45.252 kernel: RAX: 0000000000000000 RBX:
> 0000000000000017 RCX: 0000000000000017
> Jul 29 22:41:23 10.0.45.252 kernel: RDX: ffffffff81ac9240 RSI:
> 0000000000000017 RDI: ffff880b154a0750
> Jul 29 22:41:23 10.0.45.252 kernel: RBP: ffff880b154a0750 R08:
> 0000000000989680 R09: 0000000000000400
> Jul 29 22:41:23 10.0.45.252 kernel: R10: 0000000000000001 R11:
> 0000000000000000 R12: 0000000000000017
> Jul 29 22:41:23 10.0.45.252 kernel: R13: ffff880b154a0a48 R14:
> ffff880b99a157f0 R15: ffff880b154a0950
> Jul 29 22:41:23 10.0.45.252 kernel: FS: 0000000000000000(0000)
> GS:ffff880c3fd60000(0000) knlGS:0000000000000000
> Jul 29 22:41:23 10.0.45.252 kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> 000000008005003b
> Jul 29 22:41:23 10.0.45.252 kernel: CR2: fffffffffffffff8 CR3:
> 00000000014aa000 CR4: 00000000000007f0
> Jul 29 22:41:23 10.0.45.252 kernel: DR0: 0000000000000000 DR1:
> 0000000000000000 DR2: 0000000000000000
> Jul 29 22:41:23 10.0.45.252 kernel: DR3: 0000000000000000 DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 29 22:41:23 10.0.45.252 kernel: Process kworker/23:2 (pid: 25735,
> threadinfo ffff880b154a0ba0, task ffff880b154a0750)
> Jul 29 22:41:23 10.0.45.252 kernel: Stack:
> Jul 29 22:41:23 10.0.45.252 kernel: ffffffff8104f9b8 ffff880c3fd6df00
> ffffffff814811eb 0000000000000020
> Jul 29 22:41:23 10.0.45.252 kernel: ffff880b154a0ba0 ffff880b99a156d8
> ffff880b154a0ba0 000000000000df00
> Jul 29 22:41:23 10.0.45.252 kernel: ffff880b154a0ba0 ffff880b154a0ba8
> ffff880b154a0ba0 ffff880b154a0ba0
> Jul 29 22:41:23 10.0.45.252 kernel: Call Trace:
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8104f9b8>] ?
> wq_worker_sleeping+0x8/0xa0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff814811eb>] ?
> __schedule+0x4ab/0x990
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff810ddf18>] ?
> kmem_cache_free+0x98/0xa0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81037df6>] ?
> release_task+0x2b6/0x430
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81039535>] ? do_exit+0x5c5/0x930
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff810398f0>] ?
> do_group_exit+0x50/0xc0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff810064ad>] ? oops_end+0x9d/0xe0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81023f63>] ?
> no_context+0x113/0x2f0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81024f1b>] ?
> do_page_fault+0x49b/0x500
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81043524>] ? mod_timer+0x134/0x200
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a5e00>] ? user_revoke+0x60/0x60
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a3c9d>] ?
> search_my_process_keyrings+0x5d/0x1f0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a5e00>] ? user_revoke+0x60/0x60
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81482ca5>] ? page_fault+0x35/0x40
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a4a70>] ?
> key_wait_bit+0x10/0x10
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a4a60>] ?
> wait_for_key_construction+0x70/0x70
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a4a18>] ?
> wait_for_key_construction+0x28/0x70
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811a512f>] ? request_key+0x5f/0xa0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff810df09d>] ? __kmalloc+0x2d/0x120
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81184fbb>] ?
> nfs_idmap_request_key+0x1ab/0x1c0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81185027>] ?
> nfs_idmap_get_key+0x57/0xd0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff811852ae>] ?
> nfs_map_string_to_numeric+0x3e/0xc0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8118535f>] ?
> nfs_idmap_lookup_id+0x2f/0x80
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81185479>] ?
> nfs_map_name_to_uid+0x39/0x90
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8117dedb>] ?
> decode_getfattr_attrs+0x94b/0xa10
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8117f776>] ? T.1607+0x96/0xe0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8117f852>] ?
> nfs4_xdr_dec_delegreturn+0x72/0x80
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8117f7e0>] ?
> decode_getfattr+0x20/0x20
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8144db39>] ?
> rpcauth_unwrap_resp+0x79/0x80
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8117f7e0>] ?
> decode_getfattr+0x20/0x20
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81445a33>] ?
> call_decode+0x2a3/0x400
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8144cf26>] ?
> __rpc_execute+0x46/0x1b0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81050338>] ?
> process_one_work+0x108/0x3a0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff8144d0c0>] ? rpc_execute+0x30/0x30
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81050a21>] ?
> worker_thread+0x151/0x420
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff810508d0>] ?
> rescuer_thread+0x300/0x300
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff810508d0>] ?
> rescuer_thread+0x300/0x300
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81054e3e>] ? kthread+0x9e/0xb0
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81484774>] ?
> kernel_thread_helper+0x4/0x10
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81482a38>] ?
> retint_restore_args+0x6/0x6
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81054da0>] ?
> kthread_freezable_should_stop+0x60/0x60
> Jul 29 22:41:23 10.0.45.252 kernel: [<ffffffff81484770>] ? gs_change+0xb/0xb
> Jul 29 22:41:23 10.0.45.252 kernel: Code: 90 90 90 90 65 48 8b 04 25
> 00 a8 00 00 48 8b 80 a0 02 00 00 8b 40 f0 c3 66 66 66 2e 0f 1f 84 00
> 00 00 00 00 48 8b 87 a0 02 00 00 <48> 8b 40 f8 c3 0f 1f 40 00 48 3b 3d
> 09 48 a7 00 74 0f 65 8b 04
> Jul 29 22:41:23 10.0.45.252 kernel: RIP [<ffffffff81054947>]
> kthread_data+0x7/0x10
> Jul 29 22:41:23 10.0.45.252 kernel: RSP <ffff880b99a15640>
> Jul 29 22:41:23 10.0.45.252 kernel: CR2: fffffffffffffff8
> Jul 29 22:41:23 10.0.45.252 kernel: ---[ end trace 59a8d5be7e929e26 ]---
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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