Commit Graph

44625 Commits

Author SHA1 Message Date
Jarno Rajahalme
87e159c59d openvswitch: Add a missing break statement.
Add a break statement to prevent fall-through from
OVS_KEY_ATTR_ETHERNET to OVS_KEY_ATTR_TUNNEL.  Without the break
actions setting ethernet addresses fail to validate with log messages
complaining about invalid tunnel attributes.

Fixes: 0a6410fbde ("openvswitch: netlink: support L3 packets")
Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-20 14:07:41 -05:00
zheng li
0a28cfd51e ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output
There is an inconsistent conditional judgement in __ip_append_data and
ip_finish_output functions, the variable length in __ip_append_data just
include the length of application's payload and udp header, don't include
the length of ip header, but in ip_finish_output use
(skb->len > ip_skb_dst_mtu(skb)) as judgement, and skb->len include the
length of ip header.

That causes some particular application's udp payload whose length is
between (MTU - IP Header) and MTU were fragmented by ip_fragment even
though the rst->dev support UFO feature.

Add the length of ip header to length in __ip_append_data to keep
consistent conditional judgement as ip_finish_output for ip fragment.

Signed-off-by: Zheng Li <james.z.li@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-20 10:45:22 -05:00
Linus Torvalds
52f40e9d65 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes and cleanups from David Miller:

 1) Revert bogus nla_ok() change, from Alexey Dobriyan.

 2) Various bpf validator fixes from Daniel Borkmann.

 3) Add some necessary SET_NETDEV_DEV() calls to hsis_femac and hip04
    drivers, from Dongpo Li.

 4) Several ethtool ksettings conversions from Philippe Reynes.

 5) Fix bugs in inet port management wrt. soreuseport, from Tom Herbert.

 6) XDP support for virtio_net, from John Fastabend.

 7) Fix NAT handling within a vrf, from David Ahern.

 8) Endianness fixes in dpaa_eth driver, from Claudiu Manoil

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (63 commits)
  net: mv643xx_eth: fix build failure
  isdn: Constify some function parameters
  mlxsw: spectrum: Mark split ports as such
  cgroup: Fix CGROUP_BPF config
  qed: fix old-style function definition
  net: ipv6: check route protocol when deleting routes
  r6040: move spinlock in r6040_close as SOFTIRQ-unsafe lock order detected
  irda: w83977af_ir: cleanup an indent issue
  net: sfc: use new api ethtool_{get|set}_link_ksettings
  net: davicom: dm9000: use new api ethtool_{get|set}_link_ksettings
  net: cirrus: ep93xx: use new api ethtool_{get|set}_link_ksettings
  net: chelsio: cxgb3: use new api ethtool_{get|set}_link_ksettings
  net: chelsio: cxgb2: use new api ethtool_{get|set}_link_ksettings
  bpf: fix mark_reg_unknown_value for spilled regs on map value marking
  bpf: fix overflow in prog accounting
  bpf: dynamically allocate digest scratch buffer
  gtp: Fix initialization of Flags octet in GTPv1 header
  gtp: gtp_check_src_ms_ipv4() always return success
  net/x25: use designated initializers
  isdn: use designated initializers
  ...
2016-12-17 20:17:04 -08:00
David S. Miller
67a72a5891 Three fixes:
* avoid a WARN_ON() when trying to use WEP with AP_VLANs
  * ensure enough headroom on mesh forwarding packets
  * don't report unknown/invalid rates to userspace
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Merge tag 'mac80211-for-davem-2016-12-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Three fixes:
 * avoid a WARN_ON() when trying to use WEP with AP_VLANs
 * ensure enough headroom on mesh forwarding packets
 * don't report unknown/invalid rates to userspace
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 21:41:33 -05:00
Mantas M
c2ed1880fd net: ipv6: check route protocol when deleting routes
The protocol field is checked when deleting IPv4 routes, but ignored for
IPv6, which causes problems with routing daemons accidentally deleting
externally set routes (observed by multiple bird6 users).

This can be verified using `ip -6 route del <prefix> proto something`.

Signed-off-by: Mantas Mikulėnas <grawity@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 21:37:06 -05:00
Kees Cook
e999cb43d5 net/x25: use designated initializers
Prepare to mark sensitive kernel structures for randomization by making
sure they're using designated initializers. These were identified during
allyesconfig builds of x86, arm, and arm64, with most initializer fixes
extracted from grsecurity.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:56:57 -05:00
Kees Cook
9d1c0ca5e1 net: use designated initializers
Prepare to mark sensitive kernel structures for randomization by making
sure they're using designated initializers. These were identified during
allyesconfig builds of x86, arm, and arm64, with most initializer fixes
extracted from grsecurity.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:56:57 -05:00
Kees Cook
99a5e178bd ATM: use designated initializers
Prepare to mark sensitive kernel structures for randomization by making
sure they're using designated initializers. These were identified during
allyesconfig builds of x86, arm, and arm64, with most initializer fixes
extracted from grsecurity.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:56:57 -05:00
John Fastabend
f23bc46c30 net: xdp: add invalid buffer warning
This adds a warning for drivers to use when encountering an invalid
buffer for XDP. For normal cases this should not happen but to catch
this in virtual/qemu setups that I may not have expected from the
emulation layer having a standard warning is useful.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:48:55 -05:00
Xin Long
08abb79542 sctp: sctp_transport_lookup_process should rcu_read_unlock when transport is null
Prior to this patch, sctp_transport_lookup_process didn't rcu_read_unlock
when it failed to find a transport by sctp_addrs_lookup_transport.

This patch is to fix it by moving up rcu_read_unlock right before checking
transport and also to remove the out path.

Fixes: 1cceda7849 ("sctp: fix the issue sctp_diag uses lock_sock in rcu_read_lock")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:43:23 -05:00
Xin Long
5cb2cd68dd sctp: sctp_epaddr_lookup_transport should be protected by rcu_read_lock
Since commit 7fda702f93 ("sctp: use new rhlist interface on sctp transport
rhashtable"), sctp has changed to use rhlist_lookup to look up transport, but
rhlist_lookup doesn't call rcu_read_lock inside, unlike rhashtable_lookup_fast.

It is called in sctp_epaddr_lookup_transport and sctp_addrs_lookup_transport.
sctp_addrs_lookup_transport is always in the protection of rcu_read_lock(),
as __sctp_lookup_association is called in rx path or sctp_lookup_association
which are in the protection of rcu_read_lock() already.

But sctp_epaddr_lookup_transport is called by sctp_endpoint_lookup_assoc, it
doesn't call rcu_read_lock, which may cause "suspicious rcu_dereference_check
usage' in __rhashtable_lookup.

This patch is to fix it by adding rcu_read_lock in sctp_endpoint_lookup_assoc
before calling sctp_epaddr_lookup_transport.

Fixes: 7fda702f93 ("sctp: use new rhlist interface on sctp transport rhashtable")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:43:23 -05:00
LABBE Corentin
616f6b4023 irda: irnet: add member name to the miscdevice declaration
Since the struct miscdevice have many members, it is dangerous to init
it without members name relying only on member order.

This patch add member name to the init declaration.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:29:31 -05:00
LABBE Corentin
33de4d1bb9 irda: irnet: Remove unused IRNET_MAJOR define
The IRNET_MAJOR define is not used, so this patch remove it.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:17:24 -05:00
LABBE Corentin
24c946cc5d irnet: ppp: move IRNET_MINOR to include/linux/miscdevice.h
This patch move the define for IRNET_MINOR to include/linux/miscdevice.h
It is better that all minor number definitions are in the same place.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:17:24 -05:00
LABBE Corentin
e292823559 irda: irnet: Move linux/miscdevice.h include
The only use of miscdevice is irda_ppp so no need to include
linux/miscdevice.h for all irda files.
This patch move the linux/miscdevice.h include to irnet_ppp.h

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:16:31 -05:00
LABBE Corentin
078497a4d9 irda: irproc.c: Remove unneeded linux/miscdevice.h include
irproc.c does not use any miscdevice so this patch remove this
unnecessary inclusion.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:16:31 -05:00
Tom Herbert
0643ee4fd1 inet: Fix get port to handle zero port number with soreuseport set
A user may call listen with binding an explicit port with the intent
that the kernel will assign an available port to the socket. In this
case inet_csk_get_port does a port scan. For such sockets, the user may
also set soreuseport with the intent a creating more sockets for the
port that is selected. The problem is that the initial socket being
opened could inadvertently choose an existing and unreleated port
number that was already created with soreuseport.

This patch adds a boolean parameter to inet_bind_conflict that indicates
rather soreuseport is allowed for the check (in addition to
sk->sk_reuseport). In calls to inet_bind_conflict from inet_csk_get_port
the argument is set to true if an explicit port is being looked up (snum
argument is nonzero), and is false if port scan is done.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:13:19 -05:00
Tom Herbert
9af7e923fd inet: Don't go into port scan when looking for specific bind port
inet_csk_get_port is called with port number (snum argument) that may be
zero or nonzero. If it is zero, then the intent is to find an available
ephemeral port number to bind to. If snum is non-zero then the caller
is asking to allocate a specific port number. In the latter case we
never want to perform the scan in ephemeral port range. It is
conceivable that this can happen if the "goto again" in "tb_found:"
is done. This patch adds a check that snum is zero before doing
the "goto again".

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 11:13:19 -05:00
Paul Blakey
f93bd17b91 net/sched: cls_flower: Use masked key when calling HW offloads
Zero bits on the mask signify a "don't care" on the corresponding bits
in key. Some HWs require those bits on the key to be zero. Since these
bits are masked anyway, it's okay to provide the masked key to all
drivers.

Fixes: 5b33f48842 ('net/flower: Introduce hardware offload support')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 10:44:35 -05:00
Paul Blakey
970bfcd097 net/sched: cls_flower: Use mask for addr_type
When addr_type is set, mask should also be set.

Fixes: 66530bdf85 ('sched,cls_flower: set key address type when present')
Fixes: bc3103f1ed ('net/sched: cls_flower: Classify packet in ip tunnels')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-17 10:44:35 -05:00
Linus Torvalds
59331c215d A varied set of changes:
- a large rework of cephx auth code to cope with CONFIG_VMAP_STACK
   (myself).  Also fixed a deadlock caused by a bogus allocation on the
   writeback path and authorize reply verification.
 
 - a fix for long stalls during fsync (Jeff Layton).  The client now
   has a way to force the MDS log flush, leading to ~100x speedups in
   some synthetic tests.
 
 - a new [no]require_active_mds mount option (Zheng Yan).  On mount, we
   will now check whether any of the MDSes are available and bail rather
   than block if none are.  This check can be avoided by specifying the
   "no" option.
 
 - a couple of MDS cap handling fixes and a few assorted patches
   throughout.
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Merge tag 'ceph-for-4.10-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "A varied set of changes:

   - a large rework of cephx auth code to cope with CONFIG_VMAP_STACK
     (myself). Also fixed a deadlock caused by a bogus allocation on the
     writeback path and authorize reply verification.

   - a fix for long stalls during fsync (Jeff Layton). The client now
     has a way to force the MDS log flush, leading to ~100x speedups in
     some synthetic tests.

   - a new [no]require_active_mds mount option (Zheng Yan).

     On mount, we will now check whether any of the MDSes are available
     and bail rather than block if none are. This check can be avoided
     by specifying the "no" option.

   - a couple of MDS cap handling fixes and a few assorted patches
     throughout"

* tag 'ceph-for-4.10-rc1' of git://github.com/ceph/ceph-client: (32 commits)
  libceph: remove now unused finish_request() wrapper
  libceph: always signal completion when done
  ceph: avoid creating orphan object when checking pool permission
  ceph: properly set issue_seq for cap release
  ceph: add flags parameter to send_cap_msg
  ceph: update cap message struct version to 10
  ceph: define new argument structure for send_cap_msg
  ceph: move xattr initialzation before the encoding past the ceph_mds_caps
  ceph: fix minor typo in unsafe_request_wait
  ceph: record truncate size/seq for snap data writeback
  ceph: check availability of mds cluster on mount
  ceph: fix splice read for no Fc capability case
  ceph: try getting buffer capability for readahead/fadvise
  ceph: fix scheduler warning due to nested blocking
  ceph: fix printing wrong return variable in ceph_direct_read_write()
  crush: include mapper.h in mapper.c
  rbd: silence bogus -Wmaybe-uninitialized warning
  libceph: no need to drop con->mutex for ->get_authorizer()
  libceph: drop len argument of *verify_authorizer_reply()
  libceph: verify authorize reply on connect
  ...
2016-12-16 11:23:34 -08:00
Linus Torvalds
ff0f962ca3 Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
 "This update contains:

   - try to clone on copy-up

   - allow renaming a directory

   - split source into managable chunks

   - misc cleanups and fixes

  It does not contain the read-only fd data inconsistency fix, which Al
  didn't like. I'll leave that to the next year..."

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (36 commits)
  ovl: fix reStructuredText syntax errors in documentation
  ovl: fix return value of ovl_fill_super
  ovl: clean up kstat usage
  ovl: fold ovl_copy_up_truncate() into ovl_copy_up()
  ovl: create directories inside merged parent opaque
  ovl: opaque cleanup
  ovl: show redirect_dir mount option
  ovl: allow setting max size of redirect
  ovl: allow redirect_dir to default to "on"
  ovl: check for emptiness of redirect dir
  ovl: redirect on rename-dir
  ovl: lookup redirects
  ovl: consolidate lookup for underlying layers
  ovl: fix nested overlayfs mount
  ovl: check namelen
  ovl: split super.c
  ovl: use d_is_dir()
  ovl: simplify lookup
  ovl: check lower existence of rename target
  ovl: rename: simplify handling of lower/merged directory
  ...
2016-12-16 10:58:12 -08:00
Linus Torvalds
759b2656b2 The one new feature is support for a new NFSv4.2 mode_umask attribute
that makes ACL inheritance a little more useful in environments that
 default to restrictive umasks.  Requires client-side support, also on
 its way for 4.10.
 
 Other than that, miscellaneous smaller fixes and cleanup, especially to
 the server rdma code.
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Merge tag 'nfsd-4.10' of git://linux-nfs.org/~bfields/linux

Pull nfsd updates from Bruce Fields:
 "The one new feature is support for a new NFSv4.2 mode_umask attribute
  that makes ACL inheritance a little more useful in environments that
  default to restrictive umasks. Requires client-side support, also on
  its way for 4.10.

  Other than that, miscellaneous smaller fixes and cleanup, especially
  to the server rdma code"

[ The client side of the umask attribute was merged yesterday ]

* tag 'nfsd-4.10' of git://linux-nfs.org/~bfields/linux:
  nfsd: add support for the umask attribute
  sunrpc: use DEFINE_SPINLOCK()
  svcrdma: Further clean-up of svc_rdma_get_inv_rkey()
  svcrdma: Break up dprintk format in svc_rdma_accept()
  svcrdma: Remove unused variable in rdma_copy_tail()
  svcrdma: Remove unused variables in xprt_rdma_bc_allocate()
  svcrdma: Remove svc_rdma_op_ctxt::wc_status
  svcrdma: Remove DMA map accounting
  svcrdma: Remove BH-disabled spin locking in svc_rdma_send()
  svcrdma: Renovate sendto chunk list parsing
  svcauth_gss: Close connection when dropping an incoming message
  svcrdma: Clear xpt_bc_xps in xprt_setup_rdma_bc() error exit arm
  nfsd: constify reply_cache_stats_operations structure
  nfsd: update workqueue creation
  sunrpc: GFP_KERNEL should be GFP_NOFS in crypto code
  nfsd: catch errors in decode_fattr earlier
  nfsd: clean up supported attribute handling
  nfsd: fix error handling for clients that fail to return the layout
  nfsd: more robust allocation failure handling in nfsd_reply_cache_init
2016-12-16 10:48:28 -08:00
Linus Torvalds
9a19a6db37 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:

 - more ->d_init() stuff (work.dcache)

 - pathname resolution cleanups (work.namei)

 - a few missing iov_iter primitives - copy_from_iter_full() and
   friends. Either copy the full requested amount, advance the iterator
   and return true, or fail, return false and do _not_ advance the
   iterator. Quite a few open-coded callers converted (and became more
   readable and harder to fuck up that way) (work.iov_iter)

 - several assorted patches, the big one being logfs removal

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  logfs: remove from tree
  vfs: fix put_compat_statfs64() does not handle errors
  namei: fold should_follow_link() with the step into not-followed link
  namei: pass both WALK_GET and WALK_MORE to should_follow_link()
  namei: invert WALK_PUT logics
  namei: shift interpretation of LOOKUP_FOLLOW inside should_follow_link()
  namei: saner calling conventions for mountpoint_last()
  namei.c: get rid of user_path_parent()
  switch getfrag callbacks to ..._full() primitives
  make skb_add_data,{_nocache}() and skb_copy_to_page_nocache() advance only on success
  [iov_iter] new primitives - copy_from_iter_full() and friends
  don't open-code file_inode()
  ceph: switch to use of ->d_init()
  ceph: unify dentry_operations instances
  lustre: switch to use of ->d_init()
2016-12-16 10:24:44 -08:00
Miklos Szeredi
beef5121f3 Revert "af_unix: fix hard linked sockets on overlay"
This reverts commit eb0a4a47ae.

Since commit 51f7e52dc9 ("ovl: share inode for hard link") there's no
need to call d_real_inode() to check two overlay inodes for equality.

Side effect of this revert is that it's no longer possible to connect one
socket on overlayfs to one on the underlying layer (something which didn't
make sense anyway).

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2016-12-16 11:02:53 +01:00
Linus Torvalds
73e2e0c9b1 NFS client updates for Linux 4.10
Highlights include:
 
 Stable bugfixes:
  - Fix a pnfs deadlock between read resends and layoutreturn
  - Don't invalidate the layout stateid while a layout return is outstanding
  - Don't schedule a layoutreturn if the layout stateid is marked as invalid
  - On a pNFS error, do not send LAYOUTGET until the LAYOUTRETURN is complete
  - SUNRPC: fix refcounting problems with auth_gss messages.
 
 Features:
  - Add client support for the NFSv4 umask attribute.
  - NFSv4: Correct support for flock() stateids.
  - Add a LAYOUTRETURN operation to CLOSE and DELEGRETURN when return-on-close
    is specified
  - Allow the pNFS/flexfiles layoutstat information to piggyback on LAYOUTRETURN
  - Optimise away redundant GETATTR calls when doing state recovery and/or
    when not required by cache revalidation rules or close-to-open cache
    consistency.
  - Attribute cache improvements
  - RPC/RDMA support for SG_GAP devices
 
 Bugfixes:
  - NFS: Fix performance regressions in readdir
  - pNFS/flexfiles: Fix a deadlock on LAYOUTGET
  - NFSv4: Add missing nfs_put_lock_context()
  - NFSv4.1: Fix regression in callback retry handling
  - Fix false positive NFSv4.0 trunking detection.
  - pNFS/flexfiles: Only send layoutstats updates for mirrors that were updated
  - Various layout stateid related bugfixes
  - RPC/RDMA bugfixes
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Merge tag 'nfs-for-4.10-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable bugfixes:
   - Fix a pnfs deadlock between read resends and layoutreturn
   - Don't invalidate the layout stateid while a layout return is
     outstanding
   - Don't schedule a layoutreturn if the layout stateid is marked as
     invalid
   - On a pNFS error, do not send LAYOUTGET until the LAYOUTRETURN is
     complete
   - SUNRPC: fix refcounting problems with auth_gss messages.

  Features:
   - Add client support for the NFSv4 umask attribute.
   - NFSv4: Correct support for flock() stateids.
   - Add a LAYOUTRETURN operation to CLOSE and DELEGRETURN when
     return-on-close is specified
   - Allow the pNFS/flexfiles layoutstat information to piggyback on
     LAYOUTRETURN
   - Optimise away redundant GETATTR calls when doing state recovery
     and/or when not required by cache revalidation rules or
     close-to-open cache consistency.
   - Attribute cache improvements
   - RPC/RDMA support for SG_GAP devices

  Bugfixes:
   - NFS: Fix performance regressions in readdir
   - pNFS/flexfiles: Fix a deadlock on LAYOUTGET
   - NFSv4: Add missing nfs_put_lock_context()
   - NFSv4.1: Fix regression in callback retry handling
   - Fix false positive NFSv4.0 trunking detection.
   - pNFS/flexfiles: Only send layoutstats updates for mirrors that were
     updated
   - Various layout stateid related bugfixes
   - RPC/RDMA bugfixes"

* tag 'nfs-for-4.10-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (82 commits)
  SUNRPC: fix refcounting problems with auth_gss messages.
  nfs: add support for the umask attribute
  pNFS/flexfiles: Ensure we have enough buffer for layoutreturn
  pNFS/flexfiles: Remove a redundant parameter in ff_layout_encode_ioerr()
  pNFS/flexfiles: Fix a deadlock on LAYOUTGET
  pNFS: Layoutreturn must free the layout after the layout-private data
  pNFS/flexfiles: Fix ff_layout_add_ds_error_locked()
  NFSv4: Add missing nfs_put_lock_context()
  pNFS: Release NFS_LAYOUT_RETURN when invalidating the layout stateid
  NFSv4.1: Don't schedule lease recovery in nfs4_schedule_session_recovery()
  NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE
  NFS: Only look at the change attribute cache state in nfs_check_verifier
  NFS: Fix incorrect size revalidation when holding a delegation
  NFS: Fix incorrect mapping revalidation when holding a delegation
  pNFS/flexfiles: Support sending layoutstats in layoutreturn
  pNFS/flexfiles: Minor refactoring before adding iostats to layoutreturn
  NFS: Fix up read of mirror stats
  pNFS/flexfiles: Clean up layoutstats
  pNFS/flexfiles: Refactor encoding of the layoutreturn payload
  pNFS: Add a layoutreturn callback to performa layout-private setup
  ...
2016-12-15 18:47:31 -08:00
Linus Torvalds
ed3c5a0be3 virtio, vhost: new device, fixes, speedups
This includes the new virtio crypto device, and fixes all over the
 place.  In particular enabling endian-ness checks for sparse builds
 found some bugs which this fixes.  And it appears that everyone is in
 agreement that disabling endian-ness sparse checks shouldn't be
 necessary any longer.
 
 So this enables them for everyone, and drops __CHECK_ENDIAN__
 and __bitwise__ APIs.
 
 IRQ handling in virtio has been refactored somewhat, the
 larger switch to IRQ_SHARED will have to wait as
 it proved too aggressive.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "virtio, vhost: new device, fixes, speedups

  This includes the new virtio crypto device, and fixes all over the
  place. In particular enabling endian-ness checks for sparse builds
  found some bugs which this fixes. And it appears that everyone is in
  agreement that disabling endian-ness sparse checks shouldn't be
  necessary any longer.

  So this enables them for everyone, and drops the __CHECK_ENDIAN__ and
  __bitwise__ APIs.

  IRQ handling in virtio has been refactored somewhat, the larger switch
  to IRQ_SHARED will have to wait as it proved too aggressive"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits)
  Makefile: drop -D__CHECK_ENDIAN__ from cflags
  fs/logfs: drop __CHECK_ENDIAN__
  Documentation/sparse: drop __CHECK_ENDIAN__
  linux: drop __bitwise__ everywhere
  checkpatch: replace __bitwise__ with __bitwise
  Documentation/sparse: drop __bitwise__
  tools: enable endian checks for all sparse builds
  linux/types.h: enable endian checks for all sparse builds
  virtio_mmio: Set dev.release() to avoid warning
  vhost: remove unused feature bit
  virtio_ring: fix description of virtqueue_get_buf
  vhost/scsi: Remove unused but set variable
  tools/virtio: use {READ,WRITE}_ONCE() in uaccess.h
  vringh: kill off ACCESS_ONCE()
  tools/virtio: fix READ_ONCE()
  crypto: add virtio-crypto driver
  vhost: cache used event for better performance
  vsock: lookup and setup guest_cid inside vhost_vsock_lock
  virtio_pci: split vp_try_to_find_vqs into INTx and MSI-X variants
  virtio_pci: merge vp_free_vectors into vp_del_vqs
  ...
2016-12-15 18:13:41 -08:00
Michael S. Tsirkin
6bdf1e0efb Makefile: drop -D__CHECK_ENDIAN__ from cflags
That's the default now, no need for makefiles to set it.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
2016-12-16 00:13:43 +02:00
Michael S. Tsirkin
9efeccacd3 linux: drop __bitwise__ everywhere
__bitwise__ used to mean "yes, please enable sparse checks
unconditionally", but now that we dropped __CHECK_ENDIAN__
__bitwise is exactly the same.
There aren't many users, replace it by __bitwise everywhere.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Akced-by: Lee Duncan <lduncan@suse.com>
2016-12-16 00:13:41 +02:00
Linus Torvalds
4d5b57e05a Updates for 4.10 kernel merge window
- Shared mlx5 updates with net stack (will drop out on merge if Dave's
   tree has already been merged)
 - Driver updates: cxgb4, hfi1, hns-roce, i40iw, mlx4, mlx5, qedr, rxe
 - Debug cleanups
 - New connection rejection helpers
 - SRP updates
 - Various misc fixes
 - New paravirt driver from vmware
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma updates from Doug Ledford:
 "This is the complete update for the rdma stack for this release cycle.

  Most of it is typical driver and core updates, but there is the
  entirely new VMWare pvrdma driver. You may have noticed that there
  were changes in DaveM's pull request to the bnxt Ethernet driver to
  support a RoCE RDMA driver. The bnxt_re driver was tentatively set to
  be pulled in this release cycle, but it simply wasn't ready in time
  and was dropped (a few review comments still to address, and some
  multi-arch build issues like prefetch() not working across all
  arches).

  Summary:

   - shared mlx5 updates with net stack (will drop out on merge if
     Dave's tree has already been merged)

   - driver updates: cxgb4, hfi1, hns-roce, i40iw, mlx4, mlx5, qedr, rxe

   - debug cleanups

   - new connection rejection helpers

   - SRP updates

   - various misc fixes

   - new paravirt driver from vmware"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (210 commits)
  IB: Add vmw_pvrdma driver
  IB/mlx4: fix improper return value
  IB/ocrdma: fix bad initialization
  infiniband: nes: return value of skb_linearize should be handled
  MAINTAINERS: Update Intel RDMA RNIC driver maintainers
  MAINTAINERS: Remove Mitesh Ahuja from emulex maintainers
  IB/core: fix unmap_sg argument
  qede: fix general protection fault may occur on probe
  IB/mthca: Replace pci_pool_alloc by pci_pool_zalloc
  mlx5, calc_sq_size(): Make a debug message more informative
  mlx5: Remove a set-but-not-used variable
  mlx5: Use { } instead of { 0 } to init struct
  IB/srp: Make writing the add_target sysfs attr interruptible
  IB/srp: Make mapping failures easier to debug
  IB/srp: Make login failures easier to debug
  IB/srp: Introduce a local variable in srp_add_one()
  IB/srp: Fix CONFIG_DYNAMIC_DEBUG=n build
  IB/multicast: Check ib_find_pkey() return value
  IPoIB: Avoid reading an uninitialized member variable
  IB/mad: Fix an array index check
  ...
2016-12-15 12:03:32 -08:00
Ben Greear
a17d93ff3a mac80211: fix legacy and invalid rx-rate report
This fixes obtaining the rate info via sta_set_sinfo
when the rx rate is invalid (for instance, on IBSS
interface that has received no frames from one of its
peers).

Also initialize rinfo->flags for legacy rates, to not
rely on the whole sinfo being initialized to zero.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-15 10:54:48 +01:00
Michael S. Tsirkin
f83f12d660 vsock/virtio: fix src/dst cid format
These fields are 64 bit, using le32_to_cpu and friends
on these will not do the right thing.
Fix this up.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15 06:59:19 +02:00
Michael S. Tsirkin
819483d806 vsock/virtio: mark an internal function static
virtio_transport_alloc_pkt is only used locally, make it static.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15 06:59:19 +02:00
Michael S. Tsirkin
6c7efafdd5 vsock/virtio: add a missing __le annotation
guest cid is read from config space, therefore it's in little endian
format and is treated as such, annotate it accordingly.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15 06:59:18 +02:00
Linus Torvalds
a57cb1c1d7 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:

 - a few misc things

 - kexec updates

 - DMA-mapping updates to better support networking DMA operations

 - IPC updates

 - various MM changes to improve DAX fault handling

 - lots of radix-tree changes, mainly to the test suite. All leading up
   to reimplementing the IDA/IDR code to be a wrapper layer over the
   radix-tree. However the final trigger-pulling patch is held off for
   4.11.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (114 commits)
  radix tree test suite: delete unused rcupdate.c
  radix tree test suite: add new tag check
  radix-tree: ensure counts are initialised
  radix tree test suite: cache recently freed objects
  radix tree test suite: add some more functionality
  idr: reduce the number of bits per level from 8 to 6
  rxrpc: abstract away knowledge of IDR internals
  tpm: use idr_find(), not idr_find_slowpath()
  idr: add ida_is_empty
  radix tree test suite: check multiorder iteration
  radix-tree: fix replacement for multiorder entries
  radix-tree: add radix_tree_split_preload()
  radix-tree: add radix_tree_split
  radix-tree: add radix_tree_join
  radix-tree: delete radix_tree_range_tag_if_tagged()
  radix-tree: delete radix_tree_locate_item()
  radix-tree: improve multiorder iterators
  btrfs: fix race in btrfs_free_dummy_fs_info()
  radix-tree: improve dump output
  radix-tree: make radix_tree_find_next_bit more useful
  ...
2016-12-14 17:25:18 -08:00
Matthew Wilcox
444306129a rxrpc: abstract away knowledge of IDR internals
Add idr_get_cursor() / idr_set_cursor() APIs, and remove the reference
to IDR_SIZE.

Link: http://lkml.kernel.org/r/1480369871-5271-65-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14 16:04:10 -08:00
Linus Torvalds
dcdaa2f948 Merge branch 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit
Pull audit updates from Paul Moore:
 "After the small number of patches for v4.9, we've got a much bigger
  pile for v4.10.

  The bulk of these patches involve a rework of the audit backlog queue
  to enable us to move the netlink multicasting out of the task/thread
  that generates the audit record and into the kernel thread that emits
  the record (just like we do for the audit unicast to auditd).

  While we were playing with the backlog queue(s) we fixed a number of
  other little problems with the code, and from all the testing so far
  things look to be in much better shape now. Doing this also allowed us
  to re-enable disabling IRQs for some netns operations ("netns: avoid
  disabling irq for netns id").

  The remaining patches fix some small problems that are well documented
  in the commit descriptions, as well as adding session ID filtering
  support"

* 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit:
  audit: use proper refcount locking on audit_sock
  netns: avoid disabling irq for netns id
  audit: don't ever sleep on a command record/message
  audit: handle a clean auditd shutdown with grace
  audit: wake up kauditd_thread after auditd registers
  audit: rework audit_log_start()
  audit: rework the audit queue handling
  audit: rename the queues and kauditd related functions
  audit: queue netlink multicast sends just like we do for unicast sends
  audit: fixup audit_init()
  audit: move kaudit thread start from auditd registration to kaudit init (#2)
  audit: add support for session ID user filter
  audit: fix formatting of AUDIT_CONFIG_CHANGE events
  audit: skip sessionid sentinel value when auto-incrementing
  audit: tame initialization warning len_abuf in audit_log_execve_info
  audit: less stack usage for /proc/*/loginuid
2016-12-14 14:06:40 -08:00
Ilya Dryomov
45ee2c1d66 libceph: remove now unused finish_request() wrapper
Kill the wrapper and rename __finish_request() to finish_request().

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-12-14 22:39:08 +01:00
Ilya Dryomov
c297eb4269 libceph: always signal completion when done
r_safe_completion is currently, and has always been, signaled only if
on-disk ack was requested.  It's there for fsync and syncfs, which wait
for in-flight writes to flush - all data write requests set ONDISK.

However, the pool perm check code introduced in 4.2 sends a write
request with only ACK set.  An unfortunately timed syncfs can then hang
forever: r_safe_completion won't be signaled because only an unsafe
reply was requested.

We could patch ceph_osdc_sync() to skip !ONDISK write requests, but
that is somewhat incomplete and yet another special case.  Instead,
rename this completion to r_done_completion and always signal it when
the OSD client is done with the request, whether unsafe, safe, or
error.  This is a bit cleaner and helps with the cancellation code.

Reported-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-12-14 22:39:08 +01:00
Paul Moore
fba143c66a netns: avoid disabling irq for netns id
Bring back commit bc51dddf98 ("netns: avoid disabling irq for netns
id") now that we've fixed some audit multicast issues that caused
problems with original attempt.  Additional information, and history,
can be found in the links below:

 * https://github.com/linux-audit/audit-kernel/issues/22
 * https://github.com/linux-audit/audit-kernel/issues/23

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-12-14 13:06:04 -05:00
Steve Wise
39384f04d0 rds_rdma: log the connection reject message
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-14 11:38:28 -05:00
Cedric Izoard
d8da0b5d64 mac80211: Ensure enough headroom when forwarding mesh pkt
When a buffer is duplicated during MESH packet forwarding,
this patch ensures that the new buffer has enough headroom.

Signed-off-by: Cedric Izoard <cedric.izoard@ceva-dsp.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-13 16:08:37 +01:00
Johannes Berg
ec4efc4a10 mac80211: don't call drv_set_default_unicast_key() for VLANs
Since drivers know nothing about AP_VLAN interfaces, trying to
call drv_set_default_unicast_key() just results in a warning
and no call to the driver. Avoid the warning by not calling the
driver for this on AP_VLAN interfaces.

This means that drivers that somehow need this call for AP mode
will fail to work properly in the presence of VLAN interfaces,
but the current drivers don't seem to use it, and mac80211 will
select and indicate the key - so drivers should be OK now.

Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-13 15:57:59 +01:00
Linus Torvalds
e71c3978d6 Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp hotplug updates from Thomas Gleixner:
 "This is the final round of converting the notifier mess to the state
  machine. The removal of the notifiers and the related infrastructure
  will happen around rc1, as there are conversions outstanding in other
  trees.

  The whole exercise removed about 2000 lines of code in total and in
  course of the conversion several dozen bugs got fixed. The new
  mechanism allows to test almost every hotplug step standalone, so
  usage sites can exercise all transitions extensively.

  There is more room for improvement, like integrating all the
  pointlessly different architecture mechanisms of synchronizing,
  setting cpus online etc into the core code"

* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  tracing/rb: Init the CPU mask on allocation
  soc/fsl/qbman: Convert to hotplug state machine
  soc/fsl/qbman: Convert to hotplug state machine
  zram: Convert to hotplug state machine
  KVM/PPC/Book3S HV: Convert to hotplug state machine
  arm64/cpuinfo: Convert to hotplug state machine
  arm64/cpuinfo: Make hotplug notifier symmetric
  mm/compaction: Convert to hotplug state machine
  iommu/vt-d: Convert to hotplug state machine
  mm/zswap: Convert pool to hotplug state machine
  mm/zswap: Convert dst-mem to hotplug state machine
  mm/zsmalloc: Convert to hotplug state machine
  mm/vmstat: Convert to hotplug state machine
  mm/vmstat: Avoid on each online CPU loops
  mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead()
  tracing/rb: Convert to hotplug state machine
  oprofile/nmi timer: Convert to hotplug state machine
  net/iucv: Use explicit clean up labels in iucv_init()
  x86/pci/amd-bus: Convert to hotplug state machine
  x86/oprofile/nmi: Convert to hotplug state machine
  ...
2016-12-12 19:25:04 -08:00
Tobias Klauser
f6c0d1a3ed crush: include mapper.h in mapper.c
Include linux/crush/mapper.h in crush/mapper.c to get the prototypes of
crush_find_rule and crush_do_rule which are defined there. This fixes
the following GCC warnings when building with 'W=1':

  net/ceph/crush/mapper.c:40:5: warning: no previous prototype for ‘crush_find_rule’ [-Wmissing-prototypes]
  net/ceph/crush/mapper.c:793:5: warning: no previous prototype for ‘crush_do_rule’ [-Wmissing-prototypes]

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
[idryomov@gmail.com: corresponding !__KERNEL__ include]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-12-12 23:54:26 +01:00
Ilya Dryomov
b3bbd3f2ab libceph: no need to drop con->mutex for ->get_authorizer()
->get_authorizer(), ->verify_authorizer_reply(), ->sign_message() and
->check_message_signature() shouldn't be doing anything with or on the
connection (like closing it or sending messages).

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2016-12-12 23:09:21 +01:00
Ilya Dryomov
0dde584882 libceph: drop len argument of *verify_authorizer_reply()
The length of the reply is protocol-dependent - for cephx it's
ceph_x_authorize_reply.  Nothing sensible can be passed from the
messenger layer anyway.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2016-12-12 23:09:21 +01:00
Ilya Dryomov
5c056fdc5b libceph: verify authorize reply on connect
After sending an authorizer (ceph_x_authorize_a + ceph_x_authorize_b),
the client gets back a ceph_x_authorize_reply, which it is supposed to
verify to ensure the authenticity and protect against replay attacks.
The code for doing this is there (ceph_x_verify_authorizer_reply(),
ceph_auth_verify_authorizer_reply() + plumbing), but it is never
invoked by the the messenger.

AFAICT this goes back to 2009, when ceph authentication protocols
support was added to the kernel client in 4e7a5dcd1b ("ceph:
negotiate authentication protocol; implement AUTH_NONE protocol").

The second param of ceph_connection_operations::verify_authorizer_reply
is unused all the way down.  Pass 0 to facilitate backporting, and kill
it in the next commit.

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2016-12-12 23:09:21 +01:00
Ilya Dryomov
5418d0a2c8 libceph: no need for GFP_NOFS in ceph_monc_init()
It's called during inital setup, when everything should be allocated
with GFP_KERNEL.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2016-12-12 23:09:21 +01:00
Ilya Dryomov
7af3ea189a libceph: stop allocating a new cipher on every crypto request
This is useless and more importantly not allowed on the writeback path,
because crypto_alloc_skcipher() allocates memory with GFP_KERNEL, which
can recurse back into the filesystem:

    kworker/9:3     D ffff92303f318180     0 20732      2 0x00000080
    Workqueue: ceph-msgr ceph_con_workfn [libceph]
     ffff923035dd4480 ffff923038f8a0c0 0000000000000001 000000009eb27318
     ffff92269eb28000 ffff92269eb27338 ffff923036b145ac ffff923035dd4480
     00000000ffffffff ffff923036b145b0 ffffffff951eb4e1 ffff923036b145a8
    Call Trace:
     [<ffffffff951eb4e1>] ? schedule+0x31/0x80
     [<ffffffff951eb77a>] ? schedule_preempt_disabled+0xa/0x10
     [<ffffffff951ed1f4>] ? __mutex_lock_slowpath+0xb4/0x130
     [<ffffffff951ed28b>] ? mutex_lock+0x1b/0x30
     [<ffffffffc0a974b3>] ? xfs_reclaim_inodes_ag+0x233/0x2d0 [xfs]
     [<ffffffff94d92ba5>] ? move_active_pages_to_lru+0x125/0x270
     [<ffffffff94f2b985>] ? radix_tree_gang_lookup_tag+0xc5/0x1c0
     [<ffffffff94dad0f3>] ? __list_lru_walk_one.isra.3+0x33/0x120
     [<ffffffffc0a98331>] ? xfs_reclaim_inodes_nr+0x31/0x40 [xfs]
     [<ffffffff94e05bfe>] ? super_cache_scan+0x17e/0x190
     [<ffffffff94d919f3>] ? shrink_slab.part.38+0x1e3/0x3d0
     [<ffffffff94d9616a>] ? shrink_node+0x10a/0x320
     [<ffffffff94d96474>] ? do_try_to_free_pages+0xf4/0x350
     [<ffffffff94d967ba>] ? try_to_free_pages+0xea/0x1b0
     [<ffffffff94d863bd>] ? __alloc_pages_nodemask+0x61d/0xe60
     [<ffffffff94ddf42d>] ? cache_grow_begin+0x9d/0x560
     [<ffffffff94ddfb88>] ? fallback_alloc+0x148/0x1c0
     [<ffffffff94ed84e7>] ? __crypto_alloc_tfm+0x37/0x130
     [<ffffffff94de09db>] ? __kmalloc+0x1eb/0x580
     [<ffffffffc09fe2db>] ? crush_choose_firstn+0x3eb/0x470 [libceph]
     [<ffffffff94ed84e7>] ? __crypto_alloc_tfm+0x37/0x130
     [<ffffffff94ed9c19>] ? crypto_spawn_tfm+0x39/0x60
     [<ffffffffc08b30a3>] ? crypto_cbc_init_tfm+0x23/0x40 [cbc]
     [<ffffffff94ed857c>] ? __crypto_alloc_tfm+0xcc/0x130
     [<ffffffff94edcc23>] ? crypto_skcipher_init_tfm+0x113/0x180
     [<ffffffff94ed7cc3>] ? crypto_create_tfm+0x43/0xb0
     [<ffffffff94ed83b0>] ? crypto_larval_lookup+0x150/0x150
     [<ffffffff94ed7da2>] ? crypto_alloc_tfm+0x72/0x120
     [<ffffffffc0a01dd7>] ? ceph_aes_encrypt2+0x67/0x400 [libceph]
     [<ffffffffc09fd264>] ? ceph_pg_to_up_acting_osds+0x84/0x5b0 [libceph]
     [<ffffffff950d40a0>] ? release_sock+0x40/0x90
     [<ffffffff95139f94>] ? tcp_recvmsg+0x4b4/0xae0
     [<ffffffffc0a02714>] ? ceph_encrypt2+0x54/0xc0 [libceph]
     [<ffffffffc0a02b4d>] ? ceph_x_encrypt+0x5d/0x90 [libceph]
     [<ffffffffc0a02bdf>] ? calcu_signature+0x5f/0x90 [libceph]
     [<ffffffffc0a02ef5>] ? ceph_x_sign_message+0x35/0x50 [libceph]
     [<ffffffffc09e948c>] ? prepare_write_message_footer+0x5c/0xa0 [libceph]
     [<ffffffffc09ecd18>] ? ceph_con_workfn+0x2258/0x2dd0 [libceph]
     [<ffffffffc09e9903>] ? queue_con_delay+0x33/0xd0 [libceph]
     [<ffffffffc09f68ed>] ? __submit_request+0x20d/0x2f0 [libceph]
     [<ffffffffc09f6ef8>] ? ceph_osdc_start_request+0x28/0x30 [libceph]
     [<ffffffffc0b52603>] ? rbd_queue_workfn+0x2f3/0x350 [rbd]
     [<ffffffff94c94ec0>] ? process_one_work+0x160/0x410
     [<ffffffff94c951bd>] ? worker_thread+0x4d/0x480
     [<ffffffff94c95170>] ? process_one_work+0x410/0x410
     [<ffffffff94c9af8d>] ? kthread+0xcd/0xf0
     [<ffffffff951efb2f>] ? ret_from_fork+0x1f/0x40
     [<ffffffff94c9aec0>] ? kthread_create_on_node+0x190/0x190

Allocating the cipher along with the key fixes the issue - as long the
key doesn't change, a single cipher context can be used concurrently in
multiple requests.

We still can't take that GFP_KERNEL allocation though.  Both
ceph_crypto_key_clone() and ceph_crypto_key_decode() are called from
GFP_NOFS context, so resort to memalloc_noio_{save,restore}() here.

Reported-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2016-12-12 23:09:20 +01:00