From: Tom Haynes <thomas.haynes@primarydata.com>
To: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Linux NFS Mailing list <linux-nfs@vger.kernel.org>
Subject: [PATCH v4 18/50] nfs: set hostname when creating nfsv3 ds connection
Date: Wed, 14 Jan 2015 08:44:24 -0800 [thread overview]
Message-ID: <1421253896-73106-19-git-send-email-loghyr@primarydata.com> (raw)
In-Reply-To: <1421253896-73106-1-git-send-email-loghyr@primarydata.com>
From: Peng Tao <tao.peng@primarydata.com>
lockd assumes hostname exists otherwise kernel oops.
It can be reproduced by following steps:
1. mount flexfile MDS
2. write some files
3. mount DS via nfsv3
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff8134f332>] strlen+0x2/0x20
PGD 0
Oops: 0000 [#1] SMP
Modules linked in: nfsd(F) nfs_layout_flexfiles(F) rpcsec_gss_krb5(F) auth_rpcgss(F) nfsv4(F) dns_resolver(F) nfsv3(F) nfs_acl(F) nfs(F) lockd(F) sunrpc(F) fscache(F) ebtable_nat(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6table_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat(F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) bnep(F) snd_ens1371(F) snd_rawmidi(F) snd_ac97_codec(F) btusb(F) ac97_bus(F) snd_seq(F) snd_seq_device(F) snd_pcm(F) ppdev(F) bluetooth(F) 6lowpan_iphc(F) rfkill(F) vmw_balloon(F) snd_timer(F) snd(F) soundcore(F) gameport(F) i2c_piix4(F) e1000(F) vmw_vmci(F) parport_pc(F) parport(F) shpchp(F) uinput(F) xfs(F) libcrc32c(F) vmwgfx(F) ttm(F) drm(F) mptspi(F) scsi_transport_spi(F) mptscsih(F) mptbase(F) i2c_core(F)
CPU: 0 PID: 10397 Comm: mount.nfs Tainted: GF 3.14.7-100.pd_client.001.fc16.x86_64 #1
Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013
task: ffff880008942600 ti: ffff880007990000 task.ti: ffff880007990000
RIP: 0010:[<ffffffff8134f332>] [<ffffffff8134f332>] strlen+0x2/0x20
RSP: 0018:ffff880007991aa0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff880038d39c20 RCX: 0000000000000004
RDX: 0000000000000006 RSI: 0000000000000010 RDI: 0000000000000000
RBP: ffff880007991b38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000014600 R11: 0000000000000400 R12: ffffffff81cc8580
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004
FS: 00007f90cd2ef880(0000) GS:ffff88003f600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000001710000 CR4: 00000000001407f0
Stack:
ffffffffa045f52c ffff880001782230 ffff880004141e28 0006880007991ac8
ffffffff816dc14b ffff880000000000 ffff880038d39c20 0000000000000010
0000000481cc0006 0000000000000000 ffffffffa0410be8 000000000000c014
Call Trace:
[<ffffffffa045f52c>] ? nlmclnt_lookup_host+0x4c/0x2c0 [lockd]
[<ffffffff816dc14b>] ? _raw_spin_unlock_bh+0x1b/0x20
[<ffffffffa0410be8>] ? svc_destroy+0xb8/0x140 [sunrpc]
[<ffffffffa045c323>] nlmclnt_init+0x53/0xc0 [lockd]
[<ffffffffa047d2dc>] ? nfs_get_client+0x1cc/0x340 [nfs]
[<ffffffffa047c2e7>] nfs_start_lockd+0xa7/0xd0 [nfs]
[<ffffffffa047df71>] nfs_create_server+0x181/0x5c0 [nfs]
[<ffffffffa04460f3>] nfs3_create_server+0x13/0x30 [nfsv3]
[<ffffffffa048a0bc>] nfs_try_mount+0x21c/0x300 [nfs]
[<ffffffff811ca32d>] ? __kmalloc_track_caller+0x1ad/0x240
[<ffffffffa048b677>] ? nfs_fs_mount+0xc37/0xd80 [nfs]
[<ffffffffa048ad05>] nfs_fs_mount+0x2c5/0xd80 [nfs]
[<ffffffffa048a830>] ? nfs_clone_super+0x140/0x140 [nfs]
[<ffffffffa048a240>] ? nfs_clone_sb_security+0x40/0x40 [nfs]
[<ffffffff811e7e43>] mount_fs+0x43/0x1b0
[<ffffffff81193100>] ? __alloc_percpu+0x10/0x20
[<ffffffff812026e6>] vfs_kern_mount+0x76/0x120
[<ffffffff81204917>] do_mount+0x237/0xa80
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
fs/nfs/nfs3client.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
index 52e2344..9e9fa34 100644
--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c
@@ -1,5 +1,6 @@
#include <linux/nfs_fs.h>
#include <linux/nfs_mount.h>
+#include <linux/sunrpc/addr.h>
#include "internal.h"
#include "nfs3_fs.h"
@@ -89,6 +90,12 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_client *mds_clp,
};
struct rpc_timeout ds_timeout;
struct nfs_client *clp;
+ char buf[INET6_ADDRSTRLEN + 1];
+
+ /* fake a hostname because lockd wants it */
+ if (rpc_ntop(ds_addr, buf, sizeof(buf)) <= 0)
+ return ERR_PTR(-EINVAL);
+ cl_init.hostname = buf;
/* Use the MDS nfs_client cl_ipaddr. */
nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans);
--
1.9.3
next prev parent reply other threads:[~2015-01-14 16:45 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-14 16:44 [PATCH v4 00/50] Add Flexfile Layout Module Tom Haynes
2015-01-14 16:44 ` [PATCH v4 01/50] pnfs: Prepare for flexfiles by pulling out common code Tom Haynes
2015-01-14 16:44 ` [PATCH v4 02/50] pnfs: Do not grab the commit_info lock twice when rescheduling writes Tom Haynes
2015-01-14 16:44 ` [PATCH v4 03/50] nfs41: pull data server cache from file layout to generic pnfs Tom Haynes
2015-01-14 16:44 ` [PATCH v4 04/50] nfs41: pull decode_ds_addr " Tom Haynes
2015-01-14 16:44 ` [PATCH v4 05/50] nfs41: pull nfs4_ds_connect " Tom Haynes
2015-01-14 16:44 ` [PATCH v4 06/50] nfs41: allow LD to choose DS connection auth flavor Tom Haynes
2015-01-14 16:44 ` [PATCH v4 07/50] nfs41: move file layout macros to generic pnfs Tom Haynes
2015-01-14 16:44 ` [PATCH v4 08/50] nfsv3: introduce nfs3_set_ds_client Tom Haynes
2015-01-14 16:44 ` [PATCH v4 09/50] nfs41: allow LD to choose DS connection version/minor_version Tom Haynes
2015-01-14 16:44 ` [PATCH v4 10/50] nfs41: create NFSv3 DS connection if specified Tom Haynes
2015-01-14 16:44 ` [PATCH v4 11/50] pnfs: Add nfs_rpc_ops in calls to nfs_initiate_pgio Tom Haynes
2015-01-14 16:44 ` [PATCH v4 12/50] nfs: allow different protocol in nfs_initiate_commit Tom Haynes
2015-01-14 16:44 ` [PATCH v4 13/50] nfs4: pass slot table to nfs40_setup_sequence Tom Haynes
2015-01-14 16:44 ` [PATCH v4 14/50] nfs4: export nfs4_sequence_done Tom Haynes
2015-01-14 16:44 ` [PATCH v4 15/50] nfs: allow to specify cred in nfs_initiate_pgio Tom Haynes
2015-01-14 16:44 ` [PATCH v4 16/50] NFSv4.1/NFSv3: Add pNFS callbacks for nfs3_(read|write|commit)_done() Tom Haynes
2015-01-14 16:44 ` [PATCH v4 17/50] sunrpc: add rpc_count_iostats_idx Tom Haynes
2015-01-14 16:44 ` Tom Haynes [this message]
2015-01-14 16:44 ` [PATCH v4 19/50] nfs/flexclient: export pnfs_layoutcommit_inode Tom Haynes
2015-01-14 16:44 ` [PATCH v4 20/50] nfs41: close a small race window when adding new layout to global list Tom Haynes
2015-01-14 16:44 ` [PATCH v4 21/50] nfs41: serialize first layoutget of a file Tom Haynes
2015-01-14 16:44 ` [PATCH v4 22/50] nfs: save server READ/WRITE/COMMIT status Tom Haynes
2015-01-14 16:44 ` [PATCH v4 23/50] nfs41: pass iomode through layoutreturn args Tom Haynes
2015-01-14 16:44 ` [PATCH v4 24/50] nfs41: make a helper function to send layoutreturn Tom Haynes
2015-01-14 16:44 ` [PATCH v4 25/50] nfs41: add a helper to mark layout for return Tom Haynes
2015-01-14 16:44 ` [PATCH v4 26/50] nfs41: don't use a layout if it is marked for returning Tom Haynes
2015-01-14 16:44 ` [PATCH v4 27/50] nfs41: send layoutreturn in last put_lseg Tom Haynes
2015-01-14 16:44 ` [PATCH v4 28/50] nfs41: clear NFS_LAYOUT_RETURN if layoutreturn is sent or failed to send Tom Haynes
2015-01-14 16:44 ` [PATCH v4 29/50] nfs/filelayout: use pnfs_error_mark_layout_for_return Tom Haynes
2015-01-14 16:44 ` [PATCH v4 30/50] nfs: introduce pg_cleanup op for pgio descriptors Tom Haynes
2015-01-14 16:44 ` [PATCH v4 31/50] pnfs: release lseg in pnfs_generic_pg_cleanup Tom Haynes
2015-01-14 16:44 ` [PATCH v4 32/50] nfs: handle overlapping reqs in lock_and_join Tom Haynes
2015-01-14 16:44 ` [PATCH v4 33/50] nfs: rename pgio header ds_idx to ds_commit_idx Tom Haynes
2015-01-14 16:44 ` [PATCH v4 34/50] pnfs: pass ds_commit_idx through the commit path Tom Haynes
2015-01-14 16:44 ` [PATCH v4 35/50] nfs: add mirroring support to pgio layer Tom Haynes
2015-01-14 16:44 ` [PATCH v4 36/50] nfs: mirroring support for direct io Tom Haynes
2015-01-14 16:44 ` [PATCH v4 37/50] pnfs: fail comparison when bucket verifier not set Tom Haynes
2015-01-14 16:44 ` [PATCH v4 38/50] nfs41: add a debug warning if we destroy an unempty layout Tom Haynes
2015-01-14 16:44 ` [PATCH v4 39/50] nfs: only reset desc->pg_mirror_idx when mirroring is supported Tom Haynes
2015-01-14 16:44 ` [PATCH v4 40/50] nfs: add nfs_pgio_current_mirror helper Tom Haynes
2015-01-14 16:44 ` [PATCH v4 41/50] pnfs: allow LD to ask to resend read through pnfs Tom Haynes
2015-01-14 16:44 ` [PATCH v4 42/50] nfs41: add range to layoutreturn args Tom Haynes
2015-01-14 16:44 ` [PATCH v4 43/50] nfs41: allow async version layoutreturn Tom Haynes
2015-01-14 16:44 ` [PATCH v4 44/50] nfs41: introduce NFS_LAYOUT_RETURN_BEFORE_CLOSE Tom Haynes
2015-01-14 16:44 ` [PATCH v4 45/50] nfs/flexfiles: send layoutreturn before freeing lseg Tom Haynes
2015-01-14 16:44 ` [PATCH v4 46/50] nfs41: add NFS_LAYOUT_RETRY_LAYOUTGET to layout header flags Tom Haynes
2015-01-14 16:44 ` [PATCH v4 47/50] nfs: add a helper to set NFS_ODIRECT_RESCHED_WRITES to direct writes Tom Haynes
2015-01-14 16:44 ` [PATCH v4 48/50] nfs41: wait for LAYOUTRETURN before retrying LAYOUTGET Tom Haynes
2015-01-14 16:44 ` [PATCH v4 49/50] pnfs/flexfiles: Add the FlexFile Layout Driver Tom Haynes
2015-01-14 16:44 ` [PATCH v4 50/50] pnfs: Update documentation on the Layout Drivers Tom Haynes
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