linux/fs/nfs at f3cbd435b02fb45efc2c8a39c2ea19816669c412 - linux - MSD Gitea: Git with a cup of tea

leandrof/linux

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History

fanchaoting 5a12cca697 umount oops when remove blocklayoutdriver first

now pnfs client uses block layout, maybe we can remove
blocklayoutdriver first. if we umount later,
it can cause oops in unset_pnfs_layoutdriver.
because nfss->pnfs_curr_ld->clear_layoutdriver is invalid.

reproduce it:
 modprobe  blocklayoutdriver
 mount -t nfs4 -o minorversion=1 pnfsip:/ /mnt/
 rmmod blocklayoutdriver
 umount /mnt

then you can see following

CPU 0
Pid: 17023, comm: umount.nfs4 Tainted: GF          O 3.7.0-rc6-pnfs #1 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform
RIP: 0010:[<ffffffffa04cfe6d>]  [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4]
RSP: 0018:ffff8800022d9e48  EFLAGS: 00010286
RAX: ffffffffa04a1b00 RBX: ffff88000b013800 RCX: 0000000000000001
RDX: ffffffff81ae8ee0 RSI: ffff880001ee94b8 RDI: ffff88000b013800
RBP: ffff8800022d9e58 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff880001ee9400
R13: ffff8800105978c0 R14: 00007fff25846c08 R15: 0000000001bba550
FS:  00007f45ae7f0700(0000) GS:ffff880012c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffffffffa04a1b38 CR3: 0000000002c0c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process umount.nfs4 (pid: 17023, threadinfo ffff8800022d8000, task ffff880006e48aa0)
Stack:
ffff8800105978c0 ffff88000b013800 ffff8800022d9e78 ffffffffa04cd0ce
ffff8800022d9e78 ffff88000b013800 ffff8800022d9ea8 ffffffffa04755a7
ffff8800022d9ea8 ffff880002f96400 ffff88000b013800 ffff880002f96400
Call Trace:
[<ffffffffa04cd0ce>] nfs4_destroy_server+0x1e/0x30 [nfsv4]
[<ffffffffa04755a7>] nfs_free_server+0xb7/0x150 [nfs]
[<ffffffffa047d4d5>] nfs_kill_super+0x35/0x40 [nfs]
[<ffffffff81178d35>] deactivate_locked_super+0x45/0x70
[<ffffffff8117986a>] deactivate_super+0x4a/0x70
[<ffffffff81193ee2>] mntput_no_expire+0xd2/0x130
[<ffffffff81194d62>] sys_umount+0x72/0xe0
[<ffffffff8154af59>] system_call_fastpath+0x16/0x1b
Code: 06 e1 b8 ea ff ff ff eb 9e 0f 1f 44 00 00 55 48 89 e5 53 48 83 ec 08 66 66 66 66 90 48 8b 87 80 03 00 00 48 89 fb 48 85 c0 74 29 <48> 8b 40 38 48 85 c0 74 02 ff d0 48 8b 03 3e ff 48 04 0f 94 c2
RIP  [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4]
RSP <ffff8800022d9e48>
CR2: ffffffffa04a1b38
---[ end trace 29f75aaedda058bf ]---

Signed-off-by: fanchaoting<fanchaoting@cn.fujitsu.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org

2013-02-17 15:40:15 -05:00

..

umount oops when remove blocklayoutdriver first

2013-02-17 15:40:15 -05:00

umount oops when remove blocklayoutdriver first

2013-02-17 15:40:15 -05:00

cache_lib.c

NFSv4: Get rid of unnecessary BUG_ON()s

2012-11-04 14:43:39 -05:00

cache_lib.h

NFS: DNS resolver PipeFS notifier introduced

2012-01-31 18:20:26 -05:00

callback_proc.c

NFSv4.1: Fix bulk recall and destroy of layouts

2013-02-14 13:22:50 -05:00

callback_xdr.c

NFSv4.1: Move slot table and session struct definitions to nfs4session.h

2012-12-06 00:30:46 +01:00

callback.c

NFSv4: Fix the return value for nfs_callback_start_svc

2012-10-16 13:14:42 -04:00

callback.h

NFSv4.1: Clean up session draining

2012-12-06 00:30:44 +01:00

client.c

NFS: avoid NULL dereference in nfs_destroy_server

2012-12-12 23:55:56 -05:00

delegation.c

NFSv4: Ensure delegation recall and byte range lock removal don't conflict

2013-02-11 15:33:13 -05:00

delegation.h

NFSv4.1: Don't lose locks when a server reboots during delegation return

2013-02-11 15:33:12 -05:00

dir.c

NFS: Fix access to suid/sgid executables

2013-01-03 17:06:27 -05:00

direct.c

nfs: fix page dirtying in NFS DIO read codepath

2012-12-12 12:56:19 -05:00

dns_resolve.c

NFS: fix bug in legacy DNS resolver.

2012-10-31 16:25:59 -04:00

dns_resolve.h

NFS: DNS resolver cache per network namespace context introduced

2012-01-31 18:20:26 -05:00

file.c

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

fscache-index.c

NFS: Use the inode->i_version to cache NFSv4 change attribute information

2011-10-18 09:14:34 -07:00

fscache.c

NFS4: Open files for fscaching

2012-12-20 22:19:42 +00:00

fscache.h

NFS: Provide stub nfs_fscache_wait_on_invalidate() for when CONFIG_NFS_FSCACHE=n

2012-12-21 08:06:48 -08:00

getroot.c

nfs: remove kfree() redundant null checks

2013-02-17 15:27:21 -05:00

idmap.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2012-12-16 15:40:50 -08:00

inode.c

Revert "NFS: add nfs_sb_deactive_async to avoid deadlock"

2013-02-01 10:13:48 -05:00

internal.h

Revert "NFS: add nfs_sb_deactive_async to avoid deadlock"

2013-02-01 10:13:48 -05:00

iostat.h

…

Kconfig

NFSv4.1: Remove the dependency on CONFIG_EXPERIMENTAL

2012-10-03 10:54:50 -07:00

Makefile

NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.c

2012-12-06 00:30:45 +01:00

mount_clnt.c

NFS: Remove the BUG_ON() in the mount code

2012-11-04 14:43:39 -05:00

namespace.c

NFS: Don't silently fail setattr() requests on mountpoints

2013-01-30 17:41:04 -05:00

netns.h

nfs: include NFSv4 header in netns.h

2012-10-02 08:17:02 -07:00

nfs2super.c

NFS: Convert v2 into a module

2012-07-30 19:06:41 -04:00

nfs2xdr.c

NFS: Remove asserts from the NFS XDR code

2012-11-04 14:43:38 -05:00

nfs3acl.c

userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr

2012-09-18 01:01:35 -07:00

nfs3client.c

NFS: Only initialize the ACL client in the v3 case

2012-07-30 19:05:54 -04:00

nfs3proc.c

SUNRPC handle EKEYEXPIRED in call_refreshresult

2012-12-12 15:36:02 -05:00

nfs3super.c

NFS: Convert v3 into a module

2012-07-30 19:06:46 -04:00

nfs3xdr.c

NFS: Remove asserts from the NFS XDR code

2012-11-04 14:43:38 -05:00

nfs4_fs.h

NFSv4: Ensure delegation recall and byte range lock removal don't conflict

2013-02-11 15:33:13 -05:00

nfs4client.c

NFSv4.1: Ensure that nfs41_walk_client_list() does start lease recovery

2013-01-27 15:51:41 -05:00

nfs4file.c

NFS4: Open files for fscaching

2012-12-20 22:19:42 +00:00

nfs4filelayout.c

SUNRPC handle EKEYEXPIRED in call_refreshresult

2012-12-12 15:36:02 -05:00

nfs4filelayout.h

NFSv4.1: Kill nfs4_ds_disconnect()

2012-10-15 10:49:42 -04:00

nfs4filelayoutdev.c

NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.c

2012-12-06 00:30:45 +01:00

nfs4getroot.c

NFSv4: fs/nfs/nfs4getroot.c needs to include "internal.h"

2012-10-16 12:37:59 -04:00

nfs4namespace.c

nfs: Show original device name verbatim in /proc/*/mount{s,info}

2012-10-31 16:26:26 -04:00

nfs4proc.c

NFSv4.1: Don't decode skipped layoutgets

2013-02-17 15:24:16 -05:00

nfs4renewd.c

workqueue: use mod_delayed_work() instead of cancel + queue

2012-08-13 16:27:37 -07:00

nfs4session.c

NFSv4.1: Deal effectively with interrupted RPC calls.

2012-12-15 15:39:59 -05:00

nfs4session.h

NFSv4.1: Deal effectively with interrupted RPC calls.

2012-12-15 15:39:59 -05:00

nfs4state.c

NFSv4: Ensure delegation recall and byte range lock removal don't conflict

2013-02-11 15:33:13 -05:00

nfs4super.c

NFS: Ensure that we always drop inodes that have been marked as stale

2012-12-14 14:36:36 -05:00

nfs4sysctl.c

nfs: include nfs4_fh.h in nfs4sysctl.c

2012-10-02 08:17:03 -07:00

nfs4xdr.c

Merge branch 'bugfixes' into nfs-for-next

2012-12-11 09:16:26 -05:00

nfs.h

NFS: Convert v4 into a module

2012-07-30 19:06:52 -04:00

nfsroot.c

SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUG

2012-03-20 13:08:26 -04:00

pagelist.c

NFS: Clean up helper function nfs4_select_rw_stateid()

2012-09-28 16:03:04 -04:00

pnfs_dev.c

NFSv4.1: pNFS data servers may be temporarily offline

2012-09-28 16:03:09 -04:00

pnfs.c

NFSv4.1: Fix bulk recall and destroy of layouts

2013-02-14 13:22:50 -05:00

pnfs.h

NFSv4.1: Fix bulk recall and destroy of layouts

2013-02-14 13:22:50 -05:00

proc.c

SUNRPC handle EKEYEXPIRED in call_refreshresult

2012-12-12 15:36:02 -05:00

read.c

NFS: Ensure that we free the rpc_task after read and write cleanups are done

2013-01-04 12:59:10 -05:00

super.c

Revert "NFS: add nfs_sb_deactive_async to avoid deadlock"

2013-02-01 10:13:48 -05:00

symlink.c

…

sysctl.c

NFS: Initialize v4 sysctls from nfs_init_v4()

2012-07-17 13:33:18 -04:00

unlink.c

nfs: remove kfree() redundant null checks

2013-02-17 15:27:21 -05:00

write.c

NFS: Ensure that we free the rpc_task after read and write cleanups are done

2013-01-04 12:59:10 -05:00