Comment 31 for bug 974664

We are suffering the same problem, it occurs right after login when gnome-keyring tries to access the home directory mounted via NFSv4 with kernel 3.3.1-3 on the client. Server is CentOS 6.2. Client-side kernel 3.2.10-3.fc16.x86_64 works for us. Kernel is not tainted.

Apr 10 14:26:32 morgan kernel: [ 54.179536] BUG: unable to handle kernel paging request at ffffffffffffffb8
Apr 10 14:26:32 morgan kernel: [ 54.179575] IP: [<ffffffffa03800e9>] nfs_have_delegation+0x9/0x40 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.179621] PGD 1c07067 PUD 1c08067 PMD 0
Apr 10 14:26:32 morgan kernel: [ 54.179646] Oops: 0000 [#1] SMP
Apr 10 14:26:32 morgan kernel: [ 54.179665] CPU 1
Apr 10 14:26:32 morgan kernel: [ 54.179675] Modules linked in: fuse nfs fscache auth_rpcgss nfs_acl lockd nf_conntrack_ipv4 nf_defrag_ipv4 ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables s
nd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device ppdev snd_pcm joydev i2c_i801 snd_timer snd soundcore snd_page_alloc serio_raw dcdbas parport_pc e1000e iTCO_wdt iTCO_vendor_support parport microcode sunr
pc uinput usb_storage ata_generic pata_acpi radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Apr 10 14:26:32 morgan kernel: [ 54.179957]
Apr 10 14:26:32 morgan kernel: [ 54.179966] Pid: 1345, comm: gnome-keyring-d Not tainted 3.3.1-3.fc16.x86_64 #1 Dell Inc. OptiPlex 755 /0GM819
Apr 10 14:26:32 morgan kernel: [ 54.180015] RIP: 0010:[<ffffffffa03800e9>] [<ffffffffa03800e9>] nfs_have_delegation+0x9/0x40 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.180061] RSP: 0018:ffff880074255dd8 EFLAGS: 00010246
Apr 10 14:26:32 morgan kernel: [ 54.180084] RAX: ffff8800608f4400 RBX: ffff880074255e68 RCX: 00000000ffffd8ca
Apr 10 14:26:32 morgan kernel: [ 54.180112] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
Apr 10 14:26:32 morgan kernel: [ 54.180139] RBP: ffff880074255dd8 R08: 0000000000016560 R09: ffffea0001dc9a00
Apr 10 14:26:32 morgan kernel: [ 54.180167] R10: ffffffffa037057a R11: 0000000000000000 R12: 00000000ffffd8ca
Apr 10 14:26:32 morgan kernel: [ 54.180195] R13: ffff8800608b6000 R14: ffff88006041d000 R15: ffff88007793e600
Apr 10 14:26:32 morgan kernel: [ 54.180223] FS: 00007ffb5b180800(0000) GS:ffff88007da40000(0000) knlGS:0000000000000000
Apr 10 14:26:32 morgan kernel: [ 54.180255] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Apr 10 14:26:32 morgan kernel: [ 54.180277] CR2: ffffffffffffffb8 CR3: 00000000779d9000 CR4: 00000000000006e0
Apr 10 14:26:32 morgan kernel: [ 54.180305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr 10 14:26:32 morgan kernel: [ 54.180333] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Apr 10 14:26:32 morgan kernel: [ 54.180362] Process gnome-keyring-d (pid: 1345, threadinfo ffff880074254000, task ffff880078782e60)
Apr 10 14:26:32 morgan kernel: [ 54.180396] Stack:
Apr 10 14:26:32 morgan kernel: [ 54.180405] ffff880074255e28 ffffffffa036dfa1 ffff880077268660 0000000000000000
Apr 10 14:26:32 morgan kernel: [ 54.180443] ffff88007793e600 ffff88007793e780 ffff88007793e600 0000000000000002
Apr 10 14:26:32 morgan kernel: [ 54.180479] ffff880074255e68 00000000fffffff5 ffff880074255eb8 ffffffffa0370b9c
Apr 10 14:26:32 morgan kernel: [ 54.180516] Call Trace:
Apr 10 14:26:32 morgan kernel: [ 54.180521] [<ffffffffa036dfa1>] nfs4_handle_exception+0x241/0x3a0 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.180521] [<ffffffffa0370b9c>] nfs4_proc_lock+0xec/0x440 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.180521] [<ffffffffa035118d>] do_setlk+0xed/0x110 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.180521] [<ffffffffa0351239>] nfs_flock+0x89/0xe0 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.180521] [<ffffffff811cbd53>] sys_flock+0x113/0x1c0
Apr 10 14:26:32 morgan kernel: [ 54.180521] [<ffffffff815fbfe9>] system_call_fastpath+0x16/0x1b
Apr 10 14:26:32 morgan kernel: [ 54.180521] Code: fd ff e9 40 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 66 66 66 66 90 f0 80 4f 48 04 5d c3 55 48 89 e5 66 66 66 66 90 <48> 8b 57 b8 31 c0 48 85 d2 74 0c 8b 4a 30 83 e6 03 21 f1 39 f1
Apr 10 14:26:32 morgan kernel: [ 54.180521] RIP [<ffffffffa03800e9>] nfs_have_delegation+0x9/0x40 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.180521] RSP <ffff880074255dd8>
Apr 10 14:26:32 morgan kernel: [ 54.180521] CR2: ffffffffffffffb8
Apr 10 14:26:32 morgan kernel: [ 54.180521] ---[ end trace 9fc8f48b5dd9635e ]---