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On 2012-04-10T08:59:31+00:00 Bert wrote:
Description of problem:
Kernel traceback on NFS4 locking attempt
Version-Release number of selected component (if applicable):
kernel 3.3.1-2 (and 3.3.1-3)
How reproducible:
Always
Steps to Reproduce:
1. Install kernel 3.3.1-{2,3}; mount a users home over NFS4
2. Start e.g. pidgin, which tries to lock some file
3.
Actual results:
*) Pidgin crashes with 'Killed'. Strace shows that the last activity
is:
[...]
open("/users/visics/deknuydt/.config/enchant/en_US.dic", O_RDONLY) = 11
flock(11, LOCK_EX
+++ killed by SIGKILL +++
Killed
*) In dmesg, you see:
[ 322.987247] BUG: unable to handle kernel paging request at ffb8
[ 322.987330] IP: [] nfs_have_delegation+0x9/0x40 [nfs]
[ 322.987418] PGD 1c07067 PUD 1c08067 PMD 0
[ 322.987495] Oops: [#1] SMP
[ 322.987565] CPU 1
[ 322.987574] Modules linked in: nfs fscache nf_conntrack_ipv4 nf_defrag_ipv4
xt_state nf_conntrack sha256_generic dm_crypt nvidia(PO) nfsd uinput lockd
nfs_acl auth_rpcgss sunrpc snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device snd_pcm iTCO_wdt i2c_i801 iTCO_vendor_support
intel_rng microcode r8169 i2c_core mii snd_timer snd soundcore snd_page_alloc
serio_raw firewire_ohci firewire_core crc_itu_t sata_sil24 video [last
unloaded: scsi_wait_scan]
[ 322.988230]
[ 322.988230] Pid: 1697, comm: pidgin Tainted: P O
3.3.1-3.fc16.x86_64 #1 transtec AG /DG31PR
[ 322.988230] RIP: 0010:[] []
nfs_have_delegation+0x9/0x40 [nfs]
[ 322.988230] RSP: 0018:880112e55dd8 EFLAGS: 00010246
[ 322.988230] RAX: 880122411800 RBX: 880112e55e68 RCX: d8ca
[ 322.988230] RDX: RSI: 0001 RDI:
[ 322.988230] RBP: 880112e55dd8 R08: 00016560 R09: ea00044b8400
[ 322.988230] R10: a0e0457a R11: R12: d8ca
[ 322.988230] R13: 8801218be000 R14: 88011573cc00 R15: 8801224b0480
[ 322.988230] FS: 7fdda2060980() GS:88012fc8()
knlGS:
[ 322.988230] CS: 0010 DS: ES: CR0: 80050033
[ 322.988230] CR2: ffb8 CR3: 000112c07000 CR4: 06e0
[ 322.988230] DR0: DR1: DR2:
[ 322.988230] DR3: DR6: 0ff0 DR7: 0400
[ 322.988230] Process pidgin (pid: 1697, threadinfo 880112e54000, task
880112dd2e60)
[ 322.988230] Stack:
[ 322.988230] 880112e55e28 a0e01fa1 880112e11e60
[ 322.988230] 8801224b0480 8801224b0780 8801224b0480
0082
[ 322.988230] 880112e55e68 fff5 880112e55eb8
a0e04b9c
[ 322.988230] Call Trace:
[ 322.988230] [] nfs4_handle_exception+0x241/0x3a0 [nfs]
[ 322.988230] [] nfs4_proc_lock+0xec/0x440 [nfs]
[ 322.988230] [] do_setlk+0xed/0x110 [nfs]
[ 322.988230] [] nfs_flock+0x89/0xe0 [nfs]
[ 322.988230] [] sys_flock+0x113/0x1c0
[ 322.988230] [] system_call_fastpath+0x16/0x1b
[ 322.988230] 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
[ 322.988230] RIP [] nfs_have_delegation+0x9/0x40 [nfs]
[ 322.988230] RSP
[ 322.988230] CR2: ffb8
[ 322.988230] ---[ end trace 158525064a4030cd ]---
Expected results:
*) No NFS4 delegation problems.
Additional info:
1) Koji kernel 3.3.1-3 has exactly the same problem.
2) Kernel 3.3.0-8 does not have the problem.
3) Sorry for the tainted kernel (nvidia). I'll confirm with an untainted
asap.
4) It seems that Ubuntu has this problem too.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/974664
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/974664/comments/3
On 2012-04-10T12:37:33+00:00 Tim wrote:
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 ffb8
Apr 10 14:26:32 morgan kernel: [ 54.179575] IP: []
nfs_have_delegation+0x9/0x40 [nfs]
Apr 10 14:26:32 morgan kernel: [ 54.179621] PGD 1c07067 PUD 1c08067
