$ uname -a<br />
Linux localhost.localdomain.com 3.10.0-123.6.3.el7.x86_64 <a href="http://bugs.centos.org/view.php?id=1">0000001</a> SMP Wed Aug 6 21:12:36 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux<br />
<br />
$ cat /etc/centos-release <br />
CentOS Linux release 7.0.1406 (Core)<br />
<br />
While scp-ing a 500 GB sparse file from a remote host to an automounted NFS home directory a kernel oops occurs.<br />
<br />
[ 492.868263] BUG: unable to handle kernel NULL pointer dereference at 0000000000000014<br />
[ 492.868269] IP: [<ffffffffa118cbed>] nfs41_assign_slot+0x3d/0x60 [nfsv4]<br />
[ 492.868284] PGD 0<br />
[ 492.868286] Oops: 0002 [<a href="http://bugs.centos.org/view.php?id=1">0000001</a>] SMP<br />
[ 492.868289] Modules linked in: arc4 md4 nls_utf8 cifs bnep bluetooth rfkill vhost_net macvtap macvlan ipt_MASQUERADE xt_CHECKSUM tun sg rpcsec_gss_krb5 nfsv4 dns_resolver nfs nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ftp ip6t_rpfilter ip6t_REJECT ipt_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw iptable_filter ip_tables binfmt_misc cachefiles fscache ext4 mbcache jbd2 iTCO_wdt iTCO_vendor_support dcdbas snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_seq<br />
[ 492.868325] snd_seq_device snd_pcm snd_page_alloc snd_timer snd coretemp i2c_i801 lpc_ich mfd_core shpchp serio_raw kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd pcspkr soundcore mperf mei_me mei uinput nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common nvidia(POF) ahci libahci drm e1000e libata ptp i2c_core pps_core video dm_mirror dm_region_hash dm_log dm_mod<br />
[ 492.868355] CPU: 1 PID: 16497 Comm: kworker/1:3 Tainted: PF O-------------- 3.10.0-123.6.3.el7.x86_64 <a href="http://bugs.centos.org/view.php?id=1">0000001</a><br />
[ 492.868357] Hardware name: Dell Inc. OptiPlex 990/06D7TR, BIOS A16 08/21/2012<br />
[ 492.868369] Workqueue: rpciod rpc_async_schedule [sunrpc]<br />
[ 492.868371] task: ffff8803163b16c0 ti: ffff8802f1dd4000 task.ti: ffff8802f1dd4000<br />
[ 492.868373] RIP: 0010:[<ffffffffa118cbed>] [<ffffffffa118cbed>] nfs41_assign_slot+0x3d/0x60 [nfsv4]<br />
[ 492.868381] RSP: 0018:ffff8802f1dd5ca0 EFLAGS: 00010246<br />
[ 492.868383] RAX: 000000010002ef5d RBX: ffff880316d59498 RCX: ffff880316d59400<br />
[ 492.868385] RDX: 0000000000000000 RSI: ffff8800c6844d80 RDI: ffff88031b7ffa00<br />
[ 492.868386] RBP: ffff8802f1dd5ca0 R08: ffff8800bdeb6af0 R09: 0000000000000001<br />
[ 492.868388] R10: dff7f0d287cbd780 R11: 0000000000000001 R12: ffff88031b7ffa00<br />
[ 492.868389] R13: ffffffffa118cbb0 R14: ffff8800c6844d80 R15: ffff880316d594b0<br />
[ 492.868391] FS: 0000000000000000(0000) GS:ffff88032dc20000(0000) knlGS:0000000000000000<br />
[ 492.868393] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br />
[ 492.868394] CR2: 0000000000000014 CR3: 00000003195f0000 CR4: 00000000000427e0<br />
[ 492.868396] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br />
[ 492.868397] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br />
[ 492.868398] Stack:<br />
[ 492.868400] ffff8802f1dd5ce0 ffffffffa0cd8da4 00000000000145c0 ffff8800c6844d80<br />
[ 492.868403] ffff8801e5cbd918 ffff880316d59400 ffff880316d59490 0000000000000040<br />
[ 492.868406] ffff8802f1dd5cf0 ffffffffa118d322 ffff8802f1dd5d20 ffffffffa11683b8<br />
[ 492.868409] Call Trace:<br />
[ 492.868419] [<ffffffffa0cd8da4>] rpc_wake_up_first+0x64/0x1f0 [sunrpc]<br />
[ 492.868428] [<ffffffffa118d322>] nfs41_wake_and_assign_slot+0x32/0x40 [nfsv4]<br />
[ 492.868433] [<ffffffffa11683b8>] nfs40_sequence_done.isra.22+0x38/0x70 [nfsv4]<br />
[ 492.868442] [<ffffffffa0cd7ad0>] ? rpc_destroy_wait_queue+0x20/0x20 [sunrpc]<br />
[ 492.868447] [<ffffffffa11687a8>] nfs4_sequence_done+0x38/0x40 [nfsv4]<br />
[ 492.868453] [<ffffffffa116a90e>] nfs4_write_done+0x1e/0xd0 [nfsv4]<br />
[ 492.868463] [<ffffffffa10df288>] nfs_writeback_done+0x48/0x240 [nfs]<br />
[ 492.868471] [<ffffffffa0cd7ad0>] ? rpc_destroy_wait_queue+0x20/0x20 [sunrpc]<br />
[ 492.868478] [<ffffffffa10df48e>] nfs_writeback_done_common+0xe/0x10 [nfs]<br />
[ 492.868486] [<ffffffffa0cd7af8>] rpc_exit_task+0x28/0x90 [sunrpc]<br />
[ 492.868494] [<ffffffffa0cd8834>] __rpc_execute+0x94/0x410 [sunrpc]<br />
[ 492.868502] [<ffffffffa0cd8bd6>] rpc_async_schedule+0x26/0x30 [sunrpc]<br />
[ 492.868506] [<ffffffff8107e03b>] process_one_work+0x17b/0x460<br />
[ 492.868509] [<ffffffff8107ee0b>] worker_thread+0x11b/0x400<br />
[ 492.868512] [<ffffffff8107ecf0>] ? rescuer_thread+0x400/0x400<br />
[ 492.868515] [<ffffffff81085aff>] kthread+0xcf/0xe0<br />
[ 492.868518] [<ffffffff81085a30>] ? kthread_create_on_node+0x140/0x140<br />
[ 492.868522] [<ffffffff815f26ec>] ret_from_fork+0x7c/0xb0<br />
[ 492.868524] [<ffffffff81085a30>] ? kthread_create_on_node+0x140/0x140<br />
[ 492.868526] Code: 89 e5 48 8b 81 a8 01 00 00 a8 01 74 09 31 c0 41 f6 40 08 02 74 2f 48 8b 81 80 01 00 00 48 89 46 10 49 89 30 48 8b 05 13 44 86 e0 <c7> 42 14 00 00 00 00 48 89 32 c7 42 10 01 00 00 00 48 89 42 08<br />
[ 492.868551] RIP [<ffffffffa118cbed>] nfs41_assign_slot+0x3d/0x60 [nfsv4]<br />
[ 492.868559] RSP <ffff8802f1dd5ca0><br />
[ 492.868561] CR2: 0000000000000014
↧