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Date: Fri, 1 Jun 2012 17:31:02 +0800
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Subject: Re: BUG in __key_instantiate_and_link(): unable to handle kernel
 paging request at 0000632e6472616f
From: ethan zhao <ethan.kernel@gmail.com>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: David Howells <dhowells@redhat.com>, LKML <linux-kernel@vger.kernel.org>
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The following code of __key_instantiate_and_link() tried to request a
invalid function pointer ?

<ff> 50 18  callq  *0x18(%rax)
ret = key->type->instantiate(key, data, datalen);

So may be the key/type  is not initialized or freed. not found the
same code in 3.3. should be bug with 3.4 only.

Just FYI,
Ethan

On Fri, Jun 1, 2012 at 11:41 AM, Fengguang Wu <fengguang.wu@intel.com> wrote:
> Hi David,
>
> It's the second time the machine oops in __key_instantiate_and_link() on
> 3.4 kernel. ?This bug only happens after several days of run. Do you
> have any advices or debug patches? For now I can try older (or newer)
> kernels and see if it's any better.
>
> Thanks,
> Fengguang
> ---
>
> [53056.100019] BUG: unable to handle kernel paging request at 0000632e6472616f
> [53056.108072] IP: [<0000632e6472616f>] 0x632e6472616e
> [53056.113702] PGD 0
> [53056.116119] Oops: 0010 [#1] SMP
> [53056.119982] CPU 0
> [53056.122111] Modules linked in:
> [53056.125969]
> [53056.127713] Pid: 3502, comm: rpc.idmapd Not tainted 3.4.0 #130 Intel Corporation S2600CP/S2600CP
> [53056.137880] RIP: 0010:[<0000632e6472616f>] ?[<0000632e6472616f>] 0x632e6472616e
> [53056.146228] RSP: 0018:ffff880421d2fd30 ?EFLAGS: 00010246
> [53056.152249] RAX: ffff8803bef69100 RBX: ffff8803bef690d0 RCX: ffffffff81f0f440
> [53056.160309] RDX: 0000000000000005 RSI: ffff880421d2fe8d RDI: ffff8803bef690d0
> [53056.168371] RBP: ffff880421d2fd88 R08: ffff880421d2fcd8 R09: 0000000000000000
> [53056.176435] R10: ffffffff81f0f468 R11: ffffffff813bbdbf R12: ffff880421d2fe8d
> [53056.184504] R13: ffff8805c9957b00 R14: ffff8804287b9c00 R15: 0000000000000000
> [53056.192564] FS: ?00007f87fbce5700(0000) GS:ffff88042fa00000(0000) knlGS:0000000000000000
> [53056.202451] CS: ?0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [53056.209343] CR2: 0000632e6472616f CR3: 000000042951a000 CR4: 00000000000407f0
> [53056.217784] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [53056.226226] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [53056.234675] Process rpc.idmapd (pid: 3502, threadinfo ffff880421d2e000, task ffff880427865e20)
> [53056.245144] Stack:
> [53056.247841] ?ffffffff813bbde2 ffff880416c54820 0000000000000005 ffff880421d2fdb0
> [53056.257281] ?fffffff0287b9c28 ffff8803bef690b0 ffff8803bef690d0 ffff8804287b9c00
> [53056.266725] ?0000000000000005 ffff880421d2fe8d 00007f87fbaea800 ffff880421d2fdd8
> [53056.276172] Call Trace:
> [53056.279363] ?[<ffffffff813bbde2>] ? __key_instantiate_and_link+0x5e/0xe4
> [53056.287316] ?[<ffffffff813bbec5>] key_instantiate_and_link+0x5d/0x85
> [53056.294888] ?[<ffffffff81262c29>] idmap_pipe_downcall+0x14a/0x18f
> [53056.302176] ?[<ffffffff81958071>] rpc_pipe_write+0x5d/0x77
> [53056.308782] ?[<ffffffff8114bfbd>] vfs_write+0xb2/0x142
> [53056.315000] ?[<ffffffff8114c247>] sys_write+0x4a/0x71
> [53056.321108] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
> [53056.328278] Code: ?Bad RIP value.
> [53056.332599] RIP ?[<0000632e6472616f>] 0x632e6472616e
> [53056.338687] ?RSP <ffff880421d2fd30>
> [53056.343035] CR2: 0000632e6472616f
> [53056.347640] ---[ end trace ee5d4100fdd3e1d2 ]---
>
>
> [293850.014215] general protection fault: 0000 [#1] SMP
> [293850.020521] CPU 0
> [293850.022749] Modules linked in:
> [293850.027564]
> [293850.029790] Pid: 3487, comm: rpc.idmapd Not tainted 3.4.0 #130 Intel Corporation S2600CP/S2600CP
> [293850.040833] RIP: 0010:[<ffffffff813bbddf>] ?[<ffffffff813bbddf>] __key_instantiate_and_link+0x5b/0xe4
> [293850.052196] RSP: 0018:ffff880421d3bd38 ?EFLAGS: 00010246
> [293850.058696] RAX: ffff8803044aac10 RBX: ffff8803044aac00 RCX: ffffffff81f0f440
> [293850.067637] RDX: 0000000000000005 RSI: ffff880421d3be8d RDI: ffff8803044aac00
> [293850.076670] RBP: ffff880421d3bd88 R08: ffff880421d3bcd8 R09: 0000000000000000
> [293850.085601] R10: ffffffff81f0f468 R11: ffffffff813bbdbf R12: ffff880421d3be8d
> [293850.094538] R13: ffff88036cc14d00 R14: ffff88042816dc00 R15: 0000000000000000
> [293850.103477] FS: ?00007f0954695700(0000) GS:ffff88042fa00000(0000) knlGS:0000000000000000
> [293850.113492] CS: ?0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [293850.120494] CR2: 00007f09546b8000 CR3: 0000000421d55000 CR4: 00000000000407f0
> [293850.129431] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [293850.138376] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [293850.147324] Process rpc.idmapd (pid: 3487, threadinfo ffff880421d3a000, task ffff880421cdbec0)
> [293850.157919] Stack:
> [293850.160740] ?ffff880540d037a0 0000000000000005 ffff880421d3bdb0 fffffff02816dc28
> [293850.170396] ?ffff8803044aacf0 ffff8803044aac00 ffff88042816dc00 0000000000000005
> [293850.179978] ?ffff880421d3be8d 00007f095449a800 ffff880421d3bdd8 ffffffff813bbec5
> [293850.189571] Call Trace:
> [293850.192880] ?[<ffffffff813bbec5>] key_instantiate_and_link+0x5d/0x85
> [293850.200559] ?[<ffffffff81262c29>] idmap_pipe_downcall+0x14a/0x18f
> [293850.207951] ?[<ffffffff81958071>] rpc_pipe_write+0x5d/0x77
> [293850.214668] ?[<ffffffff8114bfbd>] vfs_write+0xb2/0x142
> [293850.221001] ?[<ffffffff8114c247>] sys_write+0x4a/0x71
> [293850.227225] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
> [293850.234517] Code: 89 c5 4c 89 4d c0 e8 bc 70 5f 00 48 8b 83 c0 00 00 00 c7 45 cc f0 ff ff ff 48 8b 55 b8 a8 01 75 5f 48 8b 43 20 4c 89 e6 48 89 df <ff> 50 18 85 c0 89 45 cc 75 4b 48 8b 83 98 00 00 00 f0 ff 80 e0
> [293850.262891] RIP ?[<ffffffff813bbddf>] __key_instantiate_and_link+0x5b/0xe4
> [293850.271249] ?RSP <ffff880421d3bd38>
> [293850.276003] ---[ end trace 5e5f70d6ba42fdc4 ]---
>
> After the oops, lots of tasks get stuck:
>
> [302954.158127] SysRq : Show Blocked State
> [302954.164055] ? task ? ? ? ? ? ? ? ? ? ? ? ?PC stack ? pid father
> [302954.171284] rpc.idmapd ? ? ?D 0000000000000000 ?3912 ?3487 ? ? ?1 0x00000000
> [302954.179917] ?ffff880421d3b938 0000000000000046 ffff880421cdbec0 ffff880421d3bfd8
> [302954.189481] ?ffff880421d3bfd8 0000000000012f00 ffff88080e400000 ffff880421cdbec0
> [302954.199053] ?ffffffff8117fe4c 0000000000000000 ffff880421cdbec0 0000000000000000
> [302954.208615] Call Trace:
> [302954.211916] ?[<ffffffff8117fe4c>] ? fsnotify_clear_marks_by_inode+0x31/0xd4
> [302954.220272] ?[<ffffffff81958b73>] ? rpc_pipe_release+0x2d/0x155
> [302954.227456] ?[<ffffffff819b4393>] schedule+0x64/0x66
> [302954.233567] ?[<ffffffff819b4618>] schedule_preempt_disabled+0xe/0x10
> [302954.241236] ?[<ffffffff819b3006>] mutex_lock_nested+0x18b/0x2c9
> [302954.248415] ?[<ffffffff81958b73>] ? rpc_pipe_release+0x2d/0x155
> [302954.255595] ?[<ffffffff81958b73>] rpc_pipe_release+0x2d/0x155
> [302954.262587] ?[<ffffffff8114d7f1>] fput+0x10e/0x25b
> [302954.268506] ?[<ffffffff8114a4b3>] filp_close+0x6e/0x7a
> [302954.274816] ?[<ffffffff81067dac>] put_files_struct+0xb0/0x142
> [302954.281802] ?[<ffffffff81067d23>] ? put_files_struct+0x27/0x142
> [302954.288980] ?[<ffffffff81067ed9>] exit_files+0x49/0x51
> [302954.295286] ?[<ffffffff81068431>] do_exit+0x27a/0x7e5
> [302954.301497] ?[<ffffffff81066440>] ? kmsg_dump+0x116/0x126
> [302954.308091] ?[<ffffffff810663c5>] ? kmsg_dump+0x9b/0x126
> [302954.314591] ?[<ffffffff819b6655>] oops_end+0xbd/0xc6
> [302954.320704] ?[<ffffffff81038de9>] die+0x5a/0x65
> [302954.326328] ?[<ffffffff819b620f>] do_general_protection+0x138/0x140
> [302954.333897] ?[<ffffffff819b5b15>] general_protection+0x25/0x30
> [302954.340983] ?[<ffffffff813bbdbf>] ? __key_instantiate_and_link+0x3b/0xe4
> [302954.349040] ?[<ffffffff813bbddf>] ? __key_instantiate_and_link+0x5b/0xe4
> [302954.357096] ?[<ffffffff813bbde2>] ? __key_instantiate_and_link+0x5e/0xe4
> [302954.365151] ?[<ffffffff813bbec5>] key_instantiate_and_link+0x5d/0x85
> [302954.382213] ?[<ffffffff81262c29>] idmap_pipe_downcall+0x14a/0x18f
> [302954.389590] ?[<ffffffff81958071>] rpc_pipe_write+0x5d/0x77
> [302954.396282] ?[<ffffffff8114bfbd>] vfs_write+0xb2/0x142
> [302954.402585] ?[<ffffffff8114c247>] sys_write+0x4a/0x71
> [302954.408787] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
> [302954.416067] zsh ? ? ? ? ? ? D 0000000000000000 ?3728 ?4242 ? 4239 0x00000000
> [302954.424689] ?ffff8804296ab458 0000000000000046 ffff8804253a8000 ffff8804296abfd8
> [302954.434255] ?ffff8804296abfd8 0000000000012f00 ffffffff81ea3020 ffff8804253a8000
> [302954.443819] ?0000000100000000 ffff8804280b6900 0000000000000001 fffffffffffffff5
> [302954.453389] Call Trace:
> [302954.456688] ?[<ffffffff813c06ae>] ? request_key_and_link+0x103/0x39b
> [302954.464354] ?[<ffffffff813bc185>] ? key_user_lookup+0x3c/0x18c
> [302954.471439] ?[<ffffffff819b4393>] schedule+0x64/0x66
> [302954.477548] ?[<ffffffff819b4618>] schedule_preempt_disabled+0xe/0x10
> [302954.485215] ?[<ffffffff819b3006>] mutex_lock_nested+0x18b/0x2c9
> [302954.492509] ?[<ffffffff813c06ae>] ? request_key_and_link+0x103/0x39b
> [302954.500176] ?[<ffffffff813c06ae>] request_key_and_link+0x103/0x39b
> [302954.507646] ?[<ffffffff813c0a1a>] request_key+0x41/0x73
> [302954.514046] ?[<ffffffff8126287d>] nfs_idmap_request_key+0xea/0x1bf
> [302954.521519] ?[<ffffffff810983b7>] ? idle_balance+0x12c/0x157
> [302954.528410] ?[<ffffffff8108e121>] ? finish_task_switch+0x4c/0xf6
> [302954.535686] ?[<ffffffff81262a42>] nfs_idmap_lookup_id+0x4c/0xac
> [302954.542867] ?[<ffffffff819b54c5>] ? _raw_spin_unlock_irq+0x2e/0x3a
> [302954.550337] ?[<ffffffff81262c96>] ? nfs_map_string_to_numeric+0x28/0x76
> [302954.558292] ?[<ffffffff8108e15d>] ? finish_task_switch+0x88/0xf6
> [302954.565568] ?[<ffffffff8108e121>] ? finish_task_switch+0x4c/0xf6
> [302954.572836] ?[<ffffffff8126325f>] nfs_map_name_to_uid+0x58/0x61
> [302954.580020] ?[<ffffffff8125b17f>] decode_getfattr_attrs+0x51f/0x985
> [302954.587589] ?[<ffffffff8125e5e7>] decode_getfattr_generic.constprop.60+0x8c/0xbe
> [302954.596800] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302954.604173] ?[<ffffffff8125e62c>] decode_getfattr+0x13/0x15
> [302954.610966] ?[<ffffffff8125ead6>] nfs4_xdr_dec_getattr+0x43/0x4c
> [302954.618244] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302954.625619] ?[<ffffffff8194d701>] rpcauth_unwrap_resp+0x57/0x60
> [302954.632790] ?[<ffffffff8194490f>] call_decode+0x34c/0x3a9
> [302954.639388] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302954.647246] ?[<ffffffff819445c3>] ? call_transmit_status+0x8f/0x8f
> [302954.654714] ?[<ffffffff8194c78c>] __rpc_execute+0x9b/0x204
> [302954.661407] ?[<ffffffff81084a68>] ? wake_up_bit+0x25/0x2a
> [302954.668001] ?[<ffffffff8194c98a>] rpc_execute+0x67/0x70
> [302954.674402] ?[<ffffffff81945e6c>] rpc_run_task+0x7e/0x86
> [302954.680899] ?[<ffffffff81945f61>] rpc_call_sync+0x45/0x66
> [302954.687501] ?[<ffffffff81253e96>] _nfs4_call_sync+0x13/0x15
> [302954.694292] ?[<ffffffff81254c29>] _nfs4_proc_getattr+0x9f/0xad
> [302954.701375] ?[<ffffffff81257e9f>] nfs4_proc_getattr+0x36/0x55
> [302954.708350] ?[<ffffffff81244cc0>] __nfs_revalidate_inode+0x8b/0xef
> [302954.715817] ?[<ffffffff81244e26>] nfs_revalidate_inode+0x4a/0x51
> [302954.723095] ?[<ffffffff81240999>] nfs_check_verifier+0x51/0x77
> [302954.730175] ?[<ffffffff81240ab1>] nfs_lookup_revalidate+0xf2/0x32c
> [302954.737643] ?[<ffffffff8124220f>] nfs_open_revalidate+0x225/0x238
> [302954.745019] ?[<ffffffff81155c8f>] ? inode_permission+0x78/0xd5
> [302954.752101] ?[<ffffffff81156ecb>] ? link_path_walk+0x7e/0x74a
> [302954.759089] ?[<ffffffff81155171>] complete_walk+0xfa/0x124
> [302954.765781] ?[<ffffffff81157bb2>] path_lookupat+0x55e/0x5d4
> [302954.772574] ?[<ffffffff8113f9cc>] ? kmem_cache_alloc+0x39/0x124
> [302954.779754] ?[<ffffffff81157c50>] do_path_lookup+0x28/0xa3
> [302954.786447] ?[<ffffffff811590c7>] user_path_at_empty+0x53/0x92
> [302954.793530] ?[<ffffffff810889ea>] ? up_read+0x20/0x37
> [302954.799736] ?[<ffffffff819b8be0>] ? do_page_fault+0x3d3/0x42a
> [302954.806719] ?[<ffffffff81159117>] user_path_at+0x11/0x13
> [302954.813216] ?[<ffffffff811500e7>] vfs_fstatat+0x3a/0x64
> [302954.819613] ?[<ffffffff8115014c>] vfs_stat+0x1b/0x1d
> [302954.825722] ?[<ffffffff8115024b>] sys_newstat+0x1a/0x33
> [302954.832127] ?[<ffffffff813fdffe>] ? trace_hardirqs_on_thunk+0x3a/0x3f
> [302954.839893] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
> [302954.847176] kworker/11:5 ? ?D 000000000000000b ?4528 61345 ? ? ?2 0x00000000
> [302954.855802] ?ffff880679387c00 0000000000000046 ffff8807eb0a5e20 ffff880679387fd8
> [302954.865365] ?ffff880679387fd8 0000000000012f00 ffff880429b71f60 ffff8807eb0a5e20
> [302954.874904] ?0000000000000000 0000000000000000 ffff8807eb0a5e20 0000000000000000
> [302954.884461] Call Trace:
> [302954.887751] ?[<ffffffff819b4dd1>] ? rwsem_down_failed_common+0x41/0x103
> [302954.895707] ?[<ffffffff819b4393>] schedule+0x64/0x66
> [302954.901816] ?[<ffffffff819b4e63>] rwsem_down_failed_common+0xd3/0x103
> [302954.909579] ?[<ffffffff819b4ea6>] rwsem_down_write_failed+0x13/0x15
> [302954.917146] ?[<ffffffff813fdf63>] call_rwsem_down_write_failed+0x13/0x20
> [302954.925201] ?[<ffffffff813bda11>] ? keyring_gc+0x28/0x1b3
> [302954.931794] ?[<ffffffff819b3515>] ? down_write+0x52/0x59
> [302954.938296] ?[<ffffffff813bda11>] ? keyring_gc+0x28/0x1b3
> [302954.944892] ?[<ffffffff813bb9a4>] ? key_garbage_collector+0x2a0/0x3b1
> [302954.952656] ?[<ffffffff813bda11>] keyring_gc+0x28/0x1b3
> [302954.959061] ?[<ffffffff813bba49>] key_garbage_collector+0x345/0x3b1
> [302954.966628] ?[<ffffffff813bb9a4>] ? key_garbage_collector+0x2a0/0x3b1
> [302954.974392] ?[<ffffffff8107ce74>] process_one_work+0x220/0x3e5
> [302954.981474] ?[<ffffffff8107cde5>] ? process_one_work+0x191/0x3e5
> [302954.988743] ?[<ffffffff813bb704>] ? key_schedule_gc+0x83/0x83
> [302954.995719] ?[<ffffffff8107d4bf>] worker_thread+0x15a/0x21b
> [302955.002512] ?[<ffffffff8107d365>] ? manage_workers.isra.22+0x170/0x170
> [302955.010372] ?[<ffffffff810845d5>] kthread+0x8b/0x93
> [302955.016387] ?[<ffffffff819bd774>] kernel_thread_helper+0x4/0x10
> [302955.023564] ?[<ffffffff819b5930>] ? retint_restore_args+0x13/0x13
> [302955.030929] ?[<ffffffff8108454a>] ? __init_kthread_worker+0x5a/0x5a
> [302955.038495] ?[<ffffffff819bd770>] ? gs_change+0x13/0x13
> [302955.044936] make ? ? ? ? ? ?D 000000000000000e ?3800 46865 ?40708 0x00000000
> [302955.053556] ?ffff88048f489518 0000000000000046 ffff880678129f60 ffff88048f489fd8
> [302955.063125] ?ffff88048f489fd8 0000000000012f00 ffff880475701f60 ffff880678129f60
> [302955.072700] ?0000000000000286 0000000000000000 0000000000000000 0000000000000000
> [302955.082254] Call Trace:
> [302955.085548] ?[<ffffffff81084b9d>] ? prepare_to_wait+0x25/0x79
> [302955.092535] ?[<ffffffff813c00d1>] ? wait_for_key_construction+0x6d/0x6d
> [302955.100495] ?[<ffffffff819b4393>] schedule+0x64/0x66
> [302955.106599] ?[<ffffffff813c00df>] key_wait_bit+0xe/0x12
> [302955.113004] ?[<ffffffff819b2201>] __wait_on_bit+0x48/0x7b
> [302955.119603] ?[<ffffffff819b22a6>] out_of_line_wait_on_bit+0x72/0x7d
> [302955.127169] ?[<ffffffff813c00d1>] ? wait_for_key_construction+0x6d/0x6d
> [302955.135126] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302955.142988] ?[<ffffffff813c00ae>] wait_for_key_construction+0x4a/0x6d
> [302955.150761] ?[<ffffffff813c09bc>] request_key_with_auxdata+0x35/0x52
> [302955.158429] ?[<ffffffff81262865>] nfs_idmap_request_key+0xd2/0x1bf
> [302955.165903] ?[<ffffffff814014be>] ? _kstrtoull+0x2c/0x66
> [302955.172401] ?[<ffffffff8140150c>] ? kstrtoull+0x14/0x16
> [302955.178803] ?[<ffffffff81262a6d>] nfs_idmap_lookup_id+0x77/0xac
> [302955.185985] ?[<ffffffff819b54c5>] ? _raw_spin_unlock_irq+0x2e/0x3a
> [302955.193455] ?[<ffffffff81262c96>] ? nfs_map_string_to_numeric+0x28/0x76
> [302955.201416] ?[<ffffffff8108e121>] ? finish_task_switch+0x4c/0xf6
> [302955.208827] ?[<ffffffff812632c0>] nfs_map_group_to_gid+0x58/0x60
> [302955.216106] ?[<ffffffff8125b246>] decode_getfattr_attrs+0x5e6/0x985
> [302955.223665] ?[<ffffffff8125e5e7>] decode_getfattr_generic.constprop.60+0x8c/0xbe
> [302955.232886] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302955.240263] ?[<ffffffff8125e62c>] decode_getfattr+0x13/0x15
> [302955.247053] ?[<ffffffff8125ead6>] nfs4_xdr_dec_getattr+0x43/0x4c
> [302955.254327] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302955.261698] ?[<ffffffff8194d701>] rpcauth_unwrap_resp+0x57/0x60
> [302955.268880] ?[<ffffffff8194490f>] call_decode+0x34c/0x3a9
> [302955.275476] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302955.283336] ?[<ffffffff819445c3>] ? call_transmit_status+0x8f/0x8f
> [302955.290803] ?[<ffffffff8194c78c>] __rpc_execute+0x9b/0x204
> [302955.297496] ?[<ffffffff81084a68>] ? wake_up_bit+0x25/0x2a
> [302955.304091] ?[<ffffffff8194c98a>] rpc_execute+0x67/0x70
> [302955.310494] ?[<ffffffff81945e6c>] rpc_run_task+0x7e/0x86
> [302955.316993] ?[<ffffffff81945f61>] rpc_call_sync+0x45/0x66
> [302955.323589] ?[<ffffffff81253e96>] _nfs4_call_sync+0x13/0x15
> [302955.330378] ?[<ffffffff81254c29>] _nfs4_proc_getattr+0x9f/0xad
> [302955.337460] ?[<ffffffff81257e9f>] nfs4_proc_getattr+0x36/0x55
> [302955.344445] ?[<ffffffff81244cc0>] __nfs_revalidate_inode+0x8b/0xef
> [302955.351916] ?[<ffffffff81240b1a>] nfs_lookup_revalidate+0x15b/0x32c
> [302955.359486] ?[<ffffffff8124220f>] nfs_open_revalidate+0x225/0x238
> [302955.366867] ?[<ffffffff8115f764>] ? __d_lookup+0x177/0x189
> [302955.373555] ?[<ffffffff8115f5ed>] ? __d_lookup_rcu+0x160/0x160
> [302955.380639] ?[<ffffffff81156d5d>] do_lookup+0x1b5/0x2a5
> [302955.387042] ?[<ffffffff81156ecb>] ? link_path_walk+0x7e/0x74a
> [302955.394026] ?[<ffffffff81158041>] do_last+0x14b/0x773
> [302955.400232] ?[<ffffffff81158dd3>] path_openat+0xd0/0x351
> [302955.406728] ?[<ffffffff81159151>] do_filp_open+0x38/0x86
> [302955.413229] ?[<ffffffff819b5493>] ? _raw_spin_unlock+0x28/0x2c
> [302955.420302] ?[<ffffffff81163666>] ? alloc_fd+0xec/0xfe
> [302955.426606] ?[<ffffffff8114b5b1>] do_sys_open+0x105/0x197
> [302955.433197] ?[<ffffffff81163eab>] ? vfsmount_lock_local_lock_cpu+0x66/0x66
> [302955.441442] ?[<ffffffff8114b664>] sys_open+0x21/0x23
> [302955.447555] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
> [302955.454824] make ? ? ? ? ? ?D 0000000000000009 ?3856 47064 ?40708 0x00000000
> [302955.463444] ?ffff88080bb87518 0000000000000046 ffff880672393ec0 ffff88080bb87fd8
> [302955.473003] ?ffff88080bb87fd8 0000000000012f00 ffff88048f663ec0 ffff880672393ec0
> [302955.482558] ?0000000000000286 0000000000000000 0000000000000000 0000000000000000
> [302955.492119] Call Trace:
> [302955.495410] ?[<ffffffff81084b9d>] ? prepare_to_wait+0x25/0x79
> [302955.502392] ?[<ffffffff813c00d1>] ? wait_for_key_construction+0x6d/0x6d
> [302955.510353] ?[<ffffffff819b4393>] schedule+0x64/0x66
> [302955.516464] ?[<ffffffff813c00df>] key_wait_bit+0xe/0x12
> [302955.522867] ?[<ffffffff819b2201>] __wait_on_bit+0x48/0x7b
> [302955.529464] ?[<ffffffff8184f881>] ? release_sock+0x15e/0x17d
> [302955.536352] ?[<ffffffff819b22a6>] out_of_line_wait_on_bit+0x72/0x7d
> [302955.543920] ?[<ffffffff813c00d1>] ? wait_for_key_construction+0x6d/0x6d
> [302955.551874] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302955.559734] ?[<ffffffff813c00ae>] wait_for_key_construction+0x4a/0x6d
> [302955.567496] ?[<ffffffff813c09bc>] request_key_with_auxdata+0x35/0x52
> [302955.575162] ?[<ffffffff81262865>] nfs_idmap_request_key+0xd2/0x1bf
> [302955.592031] ?[<ffffffff814014be>] ? _kstrtoull+0x2c/0x66
> [302955.598530] ?[<ffffffff8140150c>] ? kstrtoull+0x14/0x16
> [302955.604932] ?[<ffffffff81262a6d>] nfs_idmap_lookup_id+0x77/0xac
> [302955.612102] ?[<ffffffff819b54c5>] ? _raw_spin_unlock_irq+0x2e/0x3a
> [302955.619574] ?[<ffffffff81262c96>] ? nfs_map_string_to_numeric+0x28/0x76
> [302955.627530] ?[<ffffffff8108e121>] ? finish_task_switch+0x4c/0xf6
> [302955.634808] ?[<ffffffff812632c0>] nfs_map_group_to_gid+0x58/0x60
> [302955.642085] ?[<ffffffff8125b246>] decode_getfattr_attrs+0x5e6/0x985
> [302955.649653] ?[<ffffffff8125e5e7>] decode_getfattr_generic.constprop.60+0x8c/0xbe
> [302955.658862] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302955.666231] ?[<ffffffff8125e62c>] decode_getfattr+0x13/0x15
> [302955.673020] ?[<ffffffff8125ead6>] nfs4_xdr_dec_getattr+0x43/0x4c
> [302955.680295] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302955.687667] ?[<ffffffff8194d701>] rpcauth_unwrap_resp+0x57/0x60
> [302955.694843] ?[<ffffffff8194490f>] call_decode+0x34c/0x3a9
> [302955.701436] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302955.709302] ?[<ffffffff819445c3>] ? call_transmit_status+0x8f/0x8f
> [302955.716773] ?[<ffffffff8194c78c>] __rpc_execute+0x9b/0x204
> [302955.723464] ?[<ffffffff81084a68>] ? wake_up_bit+0x25/0x2a
> [302955.730058] ?[<ffffffff8194c98a>] rpc_execute+0x67/0x70
> [302955.736455] ?[<ffffffff81945e6c>] rpc_run_task+0x7e/0x86
> [302955.742953] ?[<ffffffff81945f61>] rpc_call_sync+0x45/0x66
> [302955.749546] ?[<ffffffff81253e96>] _nfs4_call_sync+0x13/0x15
> [302955.756336] ?[<ffffffff81254c29>] _nfs4_proc_getattr+0x9f/0xad
> [302955.763419] ?[<ffffffff81257e9f>] nfs4_proc_getattr+0x36/0x55
> [302955.770402] ?[<ffffffff81244cc0>] __nfs_revalidate_inode+0x8b/0xef
> [302955.777872] ?[<ffffffff81240b1a>] nfs_lookup_revalidate+0x15b/0x32c
> [302955.785438] ?[<ffffffff8124220f>] nfs_open_revalidate+0x225/0x238
> [302955.792811] ?[<ffffffff8115f764>] ? __d_lookup+0x177/0x189
> [302955.799499] ?[<ffffffff8115f5ed>] ? __d_lookup_rcu+0x160/0x160
> [302955.806582] ?[<ffffffff81156d5d>] do_lookup+0x1b5/0x2a5
> [302955.812983] ?[<ffffffff81156ecb>] ? link_path_walk+0x7e/0x74a
> [302955.819966] ?[<ffffffff81158041>] do_last+0x14b/0x773
> [302955.826172] ?[<ffffffff81158dd3>] path_openat+0xd0/0x351
> [302955.832670] ?[<ffffffff81159151>] do_filp_open+0x38/0x86
> [302955.839168] ?[<ffffffff819b5493>] ? _raw_spin_unlock+0x28/0x2c
> [302955.846250] ?[<ffffffff81163666>] ? alloc_fd+0xec/0xfe
> [302955.852555] ?[<ffffffff8114b5b1>] do_sys_open+0x105/0x197
> [302955.859155] ?[<ffffffff81163eab>] ? vfsmount_lock_local_lock_cpu+0x66/0x66
> [302955.867403] ?[<ffffffff8114b664>] sys_open+0x21/0x23
> [302955.873514] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
> [302955.880791] make ? ? ? ? ? ?D 000000000000000c ?3856 47169 ?42128 0x00000000
> [302955.889411] ?ffff880824bbd518 0000000000000046 ffff880672389f60 ffff880824bbdfd8
> [302955.898968] ?ffff880824bbdfd8 0000000000012f00 ffff88048ffbde20 ffff880672389f60
> [302955.908525] ?0000000000000286 0000000000000000 0000000000000000 0000000000000000
> [302955.918078] Call Trace:
> [302955.921368] ?[<ffffffff81084b9d>] ? prepare_to_wait+0x25/0x79
> [302955.928354] ?[<ffffffff813c00d1>] ? wait_for_key_construction+0x6d/0x6d
> [302955.936311] ?[<ffffffff819b4393>] schedule+0x64/0x66
> [302955.942420] ?[<ffffffff813c00df>] key_wait_bit+0xe/0x12
> [302955.948821] ?[<ffffffff819b2201>] __wait_on_bit+0x48/0x7b
> [302955.955416] ?[<ffffffff8184f881>] ? release_sock+0x15e/0x17d
> [302955.962303] ?[<ffffffff819b22a6>] out_of_line_wait_on_bit+0x72/0x7d
> [302955.969868] ?[<ffffffff813c00d1>] ? wait_for_key_construction+0x6d/0x6d
> [302955.977824] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302955.985680] ?[<ffffffff813c00ae>] wait_for_key_construction+0x4a/0x6d
> [302955.993432] ?[<ffffffff813c09bc>] request_key_with_auxdata+0x35/0x52
> [302956.001099] ?[<ffffffff81262865>] nfs_idmap_request_key+0xd2/0x1bf
> [302956.008571] ?[<ffffffff814014be>] ? _kstrtoull+0x2c/0x66
> [302956.015066] ?[<ffffffff8140150c>] ? kstrtoull+0x14/0x16
> [302956.021468] ?[<ffffffff81262a6d>] nfs_idmap_lookup_id+0x77/0xac
> [302956.028648] ?[<ffffffff819b54c5>] ? _raw_spin_unlock_irq+0x2e/0x3a
> [302956.036117] ?[<ffffffff81262c96>] ? nfs_map_string_to_numeric+0x28/0x76
> [302956.044074] ?[<ffffffff8108e121>] ? finish_task_switch+0x4c/0xf6
> [302956.051349] ?[<ffffffff812632c0>] nfs_map_group_to_gid+0x58/0x60
> [302956.058636] ?[<ffffffff8125b246>] decode_getfattr_attrs+0x5e6/0x985
> [302956.066202] ?[<ffffffff8125e5e7>] decode_getfattr_generic.constprop.60+0x8c/0xbe
> [302956.075420] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302956.082794] ?[<ffffffff8125e62c>] decode_getfattr+0x13/0x15
> [302956.089586] ?[<ffffffff8125ead6>] nfs4_xdr_dec_getattr+0x43/0x4c
> [302956.096864] ?[<ffffffff8125ea93>] ? nfs4_xdr_dec_lookup+0x6e/0x6e
> [302956.104237] ?[<ffffffff8194d701>] rpcauth_unwrap_resp+0x57/0x60
> [302956.111421] ?[<ffffffff8194490f>] call_decode+0x34c/0x3a9
> [302956.118020] ?[<ffffffff81084d42>] ? autoremove_wake_function+0x3d/0x3d
> [302956.125877] ?[<ffffffff819445c3>] ? call_transmit_status+0x8f/0x8f
> [302956.133346] ?[<ffffffff8194c78c>] __rpc_execute+0x9b/0x204
> [302956.140032] ?[<ffffffff81084a68>] ? wake_up_bit+0x25/0x2a
> [302956.146629] ?[<ffffffff8194c98a>] rpc_execute+0x67/0x70
> [302956.153029] ?[<ffffffff81945e6c>] rpc_run_task+0x7e/0x86
> [302956.159527] ?[<ffffffff81945f61>] rpc_call_sync+0x45/0x66
> [302956.166121] ?[<ffffffff81253e96>] _nfs4_call_sync+0x13/0x15
> [302956.172902] ?[<ffffffff81254c29>] _nfs4_proc_getattr+0x9f/0xad
> [302956.179985] ?[<ffffffff81257e9f>] nfs4_proc_getattr+0x36/0x55
> [302956.186969] ?[<ffffffff81244cc0>] __nfs_revalidate_inode+0x8b/0xef
> [302956.194439] ?[<ffffffff81240b1a>] nfs_lookup_revalidate+0x15b/0x32c
> [302956.202007] ?[<ffffffff8124220f>] nfs_open_revalidate+0x225/0x238
> [302956.209382] ?[<ffffffff8115f764>] ? __d_lookup+0x177/0x189
> [302956.216074] ?[<ffffffff8115f5ed>] ? __d_lookup_rcu+0x160/0x160
> [302956.223157] ?[<ffffffff81156d5d>] do_lookup+0x1b5/0x2a5
> [302956.229562] ?[<ffffffff81156ecb>] ? link_path_walk+0x7e/0x74a
> [302956.236550] ?[<ffffffff81158041>] do_last+0x14b/0x773
> [302956.242756] ?[<ffffffff81158dd3>] path_openat+0xd0/0x351
> [302956.249255] ?[<ffffffff81159151>] do_filp_open+0x38/0x86
> [302956.255753] ?[<ffffffff819b5493>] ? _raw_spin_unlock+0x28/0x2c
> [302956.262835] ?[<ffffffff81163666>] ? alloc_fd+0xec/0xfe
> [302956.269137] ?[<ffffffff8114b5b1>] do_sys_open+0x105/0x197
> [302956.275726] ?[<ffffffff81163eab>] ? vfsmount_lock_local_lock_cpu+0x66/0x66
> [302956.283979] ?[<ffffffff8114b664>] sys_open+0x21/0x23
> [302956.290089] ?[<ffffffff819bc329>] system_call_fastpath+0x16/0x1b
>
--
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