1. 04 Apr, 2014 2 commits
    • J. Bruce Fields's avatar
      nfsd4: don't create unnecessary mask acl · 06f9cc12
      J. Bruce Fields authored
      Any setattr of the ACL attribute, even if it sets just the basic 3-ACE
      ACL exactly as it was returned from a file with only mode bits, creates
      a mask entry, and it is only the mask, not group, entry that is changed
      by subsequent modifications of the mode bits.
      
      So, for example, it's surprising that GROUP@ is left without read or
      write permissions after a chmod 0666:
      
        touch test
        chmod 0600 test
        nfs4_getfacl test
              A::OWNER@:rwatTcCy
              A::GROUP@:tcy
              A::EVERYONE@:tcy
        nfs4_getfacl test | nfs4_setfacl -S - test #
        chmod 0666 test
        nfs4_getfacl test
              A::OWNER@:rwatTcCy
              A::GROUP@:tcy
              D::GROUP@:rwa
              A::EVERYONE@:rwatcy
      
      So, let's stop creating the unnecessary mask ACL.
      
      A mask will still be created on non-trivial ACLs (ACLs with actual named
      user and group ACEs), so the odd posix-acl behavior of chmod modifying
      only the mask will still be left in that case; but that's consistent
      with local behavior.
      Reported-by: default avatarSoumya Koduri <skoduri@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      06f9cc12
    • J. Bruce Fields's avatar
      nfsd: revert v2 half of "nfsd: don't return high mode bits" · 082f31a2
      J. Bruce Fields authored
      This reverts the part of commit 6e14b46b
      that changes NFSv2 behavior.
      
      Mark Lord found that it broke nfs-root for Linux clients, because it
      broke NFSv2.
      
      In fact, from RFC 1094:
      
      	"Notice that the file type is specified both in the mode bits
      	and in the file type.  This is really a bug in the protocol and
      	will be fixed in future versions."
      
      So NFSv2 clients really are expected to depend on the high bits of the
      mode.
      
      Cc: stable@kernel.org
      Reported-by: default avatarMark Lord <mlord@pobox.com>
      Reviewed-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      082f31a2
  2. 31 Mar, 2014 2 commits
  3. 30 Mar, 2014 6 commits
  4. 29 Mar, 2014 10 commits
  5. 28 Mar, 2014 7 commits
    • Jeff Layton's avatar
      svcrdma: fix offset calculation for non-page aligned sge entries · 3cbe01a9
      Jeff Layton authored
      The xdr_off value in dma_map_xdr gets passed to ib_dma_map_page as the
      offset into the page to be mapped. This calculation does not correctly
      take into account the case where the data starts at some offset into
      the page. Increment the xdr_off by the page_base to ensure that it is
      respected.
      
      Cc: Tom Tucker <tom@opengridcomputing.com>
      Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      3cbe01a9
    • Jeff Layton's avatar
      xprtrdma: add separate Kconfig options for NFSoRDMA client and server support · 2e8c12e1
      Jeff Layton authored
      There are two entirely separate modules under xprtrdma/ and there's no
      reason that enabling one should automatically enable the other. Add
      config options for each one so they can be enabled/disabled separately.
      Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      2e8c12e1
    • Tom Tucker's avatar
      Fix regression in NFSRDMA server · 7e4359e2
      Tom Tucker authored
      The server regression was caused by the addition of rq_next_page
      (afc59400). There were a few places that
      were missed with the update of the rq_respages array.
      Signed-off-by: default avatarTom Tucker <tom@ogc.us>
      Tested-by: default avatarSteve Wise <swise@ogc.us>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      7e4359e2
    • J. Bruce Fields's avatar
      nfsd: typo in nfsd_rename comment · fbb74a34
      J. Bruce Fields authored
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      fbb74a34
    • Kinglong Mee's avatar
    • Jeff Layton's avatar
      lockd: ensure we tear down any live sockets when socket creation fails during lockd_up · 679b033d
      Jeff Layton authored
      We had a Fedora ABRT report with a stack trace like this:
      
      kernel BUG at net/sunrpc/svc.c:550!
      invalid opcode: 0000 [#1] SMP
      [...]
      CPU: 2 PID: 913 Comm: rpc.nfsd Not tainted 3.13.6-200.fc20.x86_64 #1
      Hardware name: Hewlett-Packard HP ProBook 4740s/1846, BIOS 68IRR Ver. F.40 01/29/2013
      task: ffff880146b00000 ti: ffff88003f9b8000 task.ti: ffff88003f9b8000
      RIP: 0010:[<ffffffffa0305fa8>]  [<ffffffffa0305fa8>] svc_destroy+0x128/0x130 [sunrpc]
      RSP: 0018:ffff88003f9b9de0  EFLAGS: 00010206
      RAX: ffff88003f829628 RBX: ffff88003f829600 RCX: 00000000000041ee
      RDX: 0000000000000000 RSI: 0000000000000286 RDI: 0000000000000286
      RBP: ffff88003f9b9de8 R08: 0000000000017360 R09: ffff88014fa97360
      R10: ffffffff8114ce57 R11: ffffea00051c9c00 R12: ffff88003f829600
      R13: 00000000ffffff9e R14: ffffffff81cc7cc0 R15: 0000000000000000
      FS:  00007f4fde284840(0000) GS:ffff88014fa80000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: 00007f4fdf5192f8 CR3: 00000000a569a000 CR4: 00000000001407e0
      Stack:
       ffff88003f792300 ffff88003f9b9e18 ffffffffa02de02a 0000000000000000
       ffffffff81cc7cc0 ffff88003f9cb000 0000000000000008 ffff88003f9b9e60
       ffffffffa033bb35 ffffffff8131c86c ffff88003f9cb000 ffff8800a5715008
      Call Trace:
       [<ffffffffa02de02a>] lockd_up+0xaa/0x330 [lockd]
       [<ffffffffa033bb35>] nfsd_svc+0x1b5/0x2f0 [nfsd]
       [<ffffffff8131c86c>] ? simple_strtoull+0x2c/0x50
       [<ffffffffa033c630>] ? write_pool_threads+0x280/0x280 [nfsd]
       [<ffffffffa033c6bb>] write_threads+0x8b/0xf0 [nfsd]
       [<ffffffff8114efa4>] ? __get_free_pages+0x14/0x50
       [<ffffffff8114eff6>] ? get_zeroed_page+0x16/0x20
       [<ffffffff811dec51>] ? simple_transaction_get+0xb1/0xd0
       [<ffffffffa033c098>] nfsctl_transaction_write+0x48/0x80 [nfsd]
       [<ffffffff811b8b34>] vfs_write+0xb4/0x1f0
       [<ffffffff811c3f99>] ? putname+0x29/0x40
       [<ffffffff811b9569>] SyS_write+0x49/0xa0
       [<ffffffff810fc2a6>] ? __audit_syscall_exit+0x1f6/0x2a0
       [<ffffffff816962e9>] system_call_fastpath+0x16/0x1b
      Code: 31 c0 e8 82 db 37 e1 e9 2a ff ff ff 48 8b 07 8b 57 14 48 c7 c7 d5 c6 31 a0 48 8b 70 20 31 c0 e8 65 db 37 e1 e9 f4 fe ff ff 0f 0b <0f> 0b 66 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 41 56 41 55
      RIP  [<ffffffffa0305fa8>] svc_destroy+0x128/0x130 [sunrpc]
       RSP <ffff88003f9b9de0>
      
      Evidently, we created some lockd sockets and then failed to create
      others. make_socks then returned an error and we tried to tear down the
      svc, but svc->sv_permsocks was not empty so we ended up tripping over
      the BUG() in svc_destroy().
      
      Fix this by ensuring that we tear down any live sockets we created when
      socket creation is going to return an error.
      
      Fixes: 786185b5 (SUNRPC: move per-net operations from...)
      Reported-by: default avatarRaphos <raphoszap@laposte.net>
      Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
      Reviewed-by: default avatarStanislav Kinsbursky <skinsbursky@parallels.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      679b033d
    • Kinglong Mee's avatar
      NFSD: Traverse unconfirmed client through hash-table · 2b905635
      Kinglong Mee authored
      When stopping nfsd, I got BUG messages, and soft lockup messages,
      The problem is cuased by double rb_erase() in nfs4_state_destroy_net()
      and destroy_client().
      
      This patch just let nfsd traversing unconfirmed client through
      hash-table instead of rbtree.
      
      [ 2325.021995] BUG: unable to handle kernel NULL pointer dereference at
                (null)
      [ 2325.022809] IP: [<ffffffff8133c18c>] rb_erase+0x14c/0x390
      [ 2325.022982] PGD 7a91b067 PUD 7a33d067 PMD 0
      [ 2325.022982] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
      [ 2325.022982] Modules linked in: nfsd(OF) cfg80211 rfkill bridge stp
      llc snd_intel8x0 snd_ac97_codec ac97_bus auth_rpcgss nfs_acl serio_raw
      e1000 i2c_piix4 ppdev snd_pcm snd_timer lockd pcspkr joydev parport_pc
      snd parport i2c_core soundcore microcode sunrpc ata_generic pata_acpi
      [last unloaded: nfsd]
      [ 2325.022982] CPU: 1 PID: 2123 Comm: nfsd Tainted: GF          O
      3.14.0-rc8+ #2
      [ 2325.022982] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS
      VirtualBox 12/01/2006
      [ 2325.022982] task: ffff88007b384800 ti: ffff8800797f6000 task.ti:
      ffff8800797f6000
      [ 2325.022982] RIP: 0010:[<ffffffff8133c18c>]  [<ffffffff8133c18c>]
      rb_erase+0x14c/0x390
      [ 2325.022982] RSP: 0018:ffff8800797f7d98  EFLAGS: 00010246
      [ 2325.022982] RAX: ffff880079c1f010 RBX: ffff880079f4c828 RCX:
      0000000000000000
      [ 2325.022982] RDX: 0000000000000000 RSI: ffff880079bcb070 RDI:
      ffff880079f4c810
      [ 2325.022982] RBP: ffff8800797f7d98 R08: 0000000000000000 R09:
      ffff88007964fc70
      [ 2325.022982] R10: 0000000000000000 R11: 0000000000000400 R12:
      ffff880079f4c800
      [ 2325.022982] R13: ffff880079bcb000 R14: ffff8800797f7da8 R15:
      ffff880079f4c860
      [ 2325.022982] FS:  0000000000000000(0000) GS:ffff88007f900000(0000)
      knlGS:0000000000000000
      [ 2325.022982] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
      [ 2325.022982] CR2: 0000000000000000 CR3: 000000007a3ef000 CR4:
      00000000000006e0
      [ 2325.022982] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
      0000000000000000
      [ 2325.022982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
      0000000000000400
      [ 2325.022982] Stack:
      [ 2325.022982]  ffff8800797f7de0 ffffffffa0191c6e ffff8800797f7da8
      ffff8800797f7da8
      [ 2325.022982]  ffff880079f4c810 ffff880079bcb000 ffffffff81cc26c0
      ffff880079c1f010
      [ 2325.022982]  ffff880079bcb070 ffff8800797f7e28 ffffffffa01977f2
      ffff8800797f7df0
      [ 2325.022982] Call Trace:
      [ 2325.022982]  [<ffffffffa0191c6e>] destroy_client+0x32e/0x3b0 [nfsd]
      [ 2325.022982]  [<ffffffffa01977f2>] nfs4_state_shutdown_net+0x1a2/0x220
      [nfsd]
      [ 2325.022982]  [<ffffffffa01700b8>] nfsd_shutdown_net+0x38/0x70 [nfsd]
      [ 2325.022982]  [<ffffffffa017013e>] nfsd_last_thread+0x4e/0x80 [nfsd]
      [ 2325.022982]  [<ffffffffa001f1eb>] svc_shutdown_net+0x2b/0x30 [sunrpc]
      [ 2325.022982]  [<ffffffffa017064b>] nfsd_destroy+0x5b/0x80 [nfsd]
      [ 2325.022982]  [<ffffffffa0170773>] nfsd+0x103/0x130 [nfsd]
      [ 2325.022982]  [<ffffffffa0170670>] ? nfsd_destroy+0x80/0x80 [nfsd]
      [ 2325.022982]  [<ffffffff810a8232>] kthread+0xd2/0xf0
      [ 2325.022982]  [<ffffffff810a8160>] ? insert_kthread_work+0x40/0x40
      [ 2325.022982]  [<ffffffff816c493c>] ret_from_fork+0x7c/0xb0
      [ 2325.022982]  [<ffffffff810a8160>] ? insert_kthread_work+0x40/0x40
      [ 2325.022982] Code: 48 83 e1 fc 48 89 10 0f 84 02 01 00 00 48 3b 41 10
      0f 84 08 01 00 00 48 89 51 08 48 89 fa e9 74 ff ff ff 0f 1f 40 00 48 8b
      50 10 <f6> 02 01 0f 84 93 00 00 00 48 8b 7a 10 48 85 ff 74 05 f6 07 01
      [ 2325.022982] RIP  [<ffffffff8133c18c>] rb_erase+0x14c/0x390
      [ 2325.022982]  RSP <ffff8800797f7d98>
      [ 2325.022982] CR2: 0000000000000000
      [ 2325.022982] ---[ end trace 28c27ed011655e57 ]---
      
      [  228.064071] BUG: soft lockup - CPU#0 stuck for 22s! [nfsd:558]
      [  228.064428] Modules linked in: ip6t_rpfilter ip6t_REJECT cfg80211
      xt_conntrack rfkill 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 nfsd(OF) auth_rpcgss nfs_acl lockd snd_intel8x0
      snd_ac97_codec ac97_bus joydev snd_pcm snd_timer e1000 sunrpc snd ppdev
      parport_pc serio_raw pcspkr i2c_piix4 microcode parport soundcore
      i2c_core ata_generic pata_acpi
      [  228.064539] CPU: 0 PID: 558 Comm: nfsd Tainted: GF          O
      3.14.0-rc8+ #2
      [  228.064539] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS
      VirtualBox 12/01/2006
      [  228.064539] task: ffff880076adec00 ti: ffff880074616000 task.ti:
      ffff880074616000
      [  228.064539] RIP: 0010:[<ffffffff8133ba17>]  [<ffffffff8133ba17>]
      rb_next+0x27/0x50
      [  228.064539] RSP: 0018:ffff880074617de0  EFLAGS: 00000282
      [  228.064539] RAX: ffff880074478010 RBX: ffff88007446f860 RCX:
      0000000000000014
      [  228.064539] RDX: ffff880074478010 RSI: 0000000000000000 RDI:
      ffff880074478010
      [  228.064539] RBP: ffff880074617de0 R08: 0000000000000000 R09:
      0000000000000012
      [  228.064539] R10: 0000000000000001 R11: ffffffffffffffec R12:
      ffffea0001d11a00
      [  228.064539] R13: ffff88007f401400 R14: ffff88007446f800 R15:
      ffff880074617d50
      [  228.064539] FS:  0000000000000000(0000) GS:ffff88007f800000(0000)
      knlGS:0000000000000000
      [  228.064539] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
      [  228.064539] CR2: 00007fe9ac6ec000 CR3: 000000007a5d6000 CR4:
      00000000000006f0
      [  228.064539] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
      0000000000000000
      [  228.064539] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
      0000000000000400
      [  228.064539] Stack:
      [  228.064539]  ffff880074617e28 ffffffffa01ab7db ffff880074617df0
      ffff880074617df0
      [  228.064539]  ffff880079273000 ffffffff81cc26c0 ffffffff81cc26c0
      0000000000000000
      [  228.064539]  0000000000000000 ffff880074617e48 ffffffffa01840b8
      ffffffff81cc26c0
      [  228.064539] Call Trace:
      [  228.064539]  [<ffffffffa01ab7db>] nfs4_state_shutdown_net+0x18b/0x220
      [nfsd]
      [  228.064539]  [<ffffffffa01840b8>] nfsd_shutdown_net+0x38/0x70 [nfsd]
      [  228.064539]  [<ffffffffa018413e>] nfsd_last_thread+0x4e/0x80 [nfsd]
      [  228.064539]  [<ffffffffa00aa1eb>] svc_shutdown_net+0x2b/0x30 [sunrpc]
      [  228.064539]  [<ffffffffa018464b>] nfsd_destroy+0x5b/0x80 [nfsd]
      [  228.064539]  [<ffffffffa0184773>] nfsd+0x103/0x130 [nfsd]
      [  228.064539]  [<ffffffffa0184670>] ? nfsd_destroy+0x80/0x80 [nfsd]
      [  228.064539]  [<ffffffff810a8232>] kthread+0xd2/0xf0
      [  228.064539]  [<ffffffff810a8160>] ? insert_kthread_work+0x40/0x40
      [  228.064539]  [<ffffffff816c493c>] ret_from_fork+0x7c/0xb0
      [  228.064539]  [<ffffffff810a8160>] ? insert_kthread_work+0x40/0x40
      [  228.064539] Code: 1f 44 00 00 55 48 8b 17 48 89 e5 48 39 d7 74 3b 48
      8b 47 08 48 85 c0 75 0e eb 25 66 0f 1f 84 00 00 00 00 00 48 89 d0 48 8b
      50 10 <48> 85 d2 75 f4 5d c3 66 90 48 3b 78 08 75 f6 48 8b 10 48 89 c7
      
      Fixes: ac55fdc4 (nfsd: move the confirmed and unconfirmed hlists...)
      Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
      Cc: stable@vger.kernel.org
      Reviewed-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      2b905635
  6. 27 Mar, 2014 9 commits
  7. 18 Feb, 2014 1 commit
  8. 13 Feb, 2014 1 commit
    • NeilBrown's avatar
      lockd: send correct lock when granting a delayed lock. · 2ec197db
      NeilBrown authored
      If an NFS client attempts to get a lock (using NLM) and the lock is
      not available, the server will remember the request and when the lock
      becomes available it will send a GRANT request to the client to
      provide the lock.
      
      If the client already held an adjacent lock, the GRANT callback will
      report the union of the existing and new locks, which can confuse the
      client.
      
      This happens because __posix_lock_file (called by vfs_lock_file)
      updates the passed-in file_lock structure when adjacent or
      over-lapping locks are found.
      
      To avoid this problem we take a copy of the two fields that can
      be changed (fl_start and fl_end) before the call and restore them
      afterwards.
      An alternate would be to allocate a 'struct file_lock', initialise it,
      use locks_copy_lock() to take a copy, then locks_release_private()
      after the vfs_lock_file() call.  But that is a lot more work.
      Reported-by: default avatarOlaf Kirch <okir@suse.com>
      Signed-off-by: default avatarNeilBrown <neilb@suse.de>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      
      --
      v1 had a couple of issues (large on-stack struct and didn't really work properly).
      This version is much better tested.
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      2ec197db
  9. 11 Feb, 2014 1 commit
    • J. Bruce Fields's avatar
      nfsd4: fix acl buffer overrun · 09bdc2d7
      J. Bruce Fields authored
      4ac7249e "nfsd: use get_acl and
      ->set_acl" forgets to set the size in the case get_acl() succeeds, so
      _posix_to_nfsv4_one() can then write past the end of its allocation.
      Symptoms were slab corruption warnings.
      
      Also, some minor cleanup while we're here.  (Among other things, note
      that the first few lines guarantee that pacl is non-NULL.)
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      09bdc2d7
  10. 10 Feb, 2014 1 commit