linux-toradex.git/drivers/infiniband/hw, branch v3.4.76 Linux kernel for Apalis and Colibri modules IB/ipath: Convert ipath_user_sdma_pin_pages() to use get_user_pages_fast() 2013-12-04T18:50:28+00:00 Jan Kara jack@suse.cz 2013-10-04T13:29:06+00:00 ac6638ed78e168e6c6c77e5ac6d9a6c4f49d0040 commit 4adcf7fb6783e354aab38824d803fa8c4f8e8a27 upstream. ipath_user_sdma_queue_pkts() gets called with mmap_sem held for writing. Except for get_user_pages() deep down in ipath_user_sdma_pin_pages() we don't seem to need mmap_sem at all. Even more interestingly the function ipath_user_sdma_queue_pkts() (and also ipath_user_sdma_coalesce() called somewhat later) call copy_from_user() which can hit a page fault and we deadlock on trying to get mmap_sem when handling that fault. So just make ipath_user_sdma_pin_pages() use get_user_pages_fast() and leave mmap_sem locking for mm. This deadlock has actually been observed in the wild when the node is under memory pressure. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> [ Merged in fix for call to get_user_pages_fast from Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>. - Roland ] Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 4adcf7fb6783e354aab38824d803fa8c4f8e8a27 upstream.

ipath_user_sdma_queue_pkts() gets called with mmap_sem held for
writing.  Except for get_user_pages() deep down in
ipath_user_sdma_pin_pages() we don't seem to need mmap_sem at all.

Even more interestingly the function ipath_user_sdma_queue_pkts() (and
also ipath_user_sdma_coalesce() called somewhat later) call
copy_from_user() which can hit a page fault and we deadlock on trying
to get mmap_sem when handling that fault.  So just make
ipath_user_sdma_pin_pages() use get_user_pages_fast() and leave
mmap_sem locking for mm.

This deadlock has actually been observed in the wild when the node
is under memory pressure.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
[ Merged in fix for call to get_user_pages_fast from Tetsuo Handa
  <penguin-kernel@I-love.SAKURA.ne.jp>.  - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RDMA/nes: Fix for terminate timer crash 2013-01-17T16:50:51+00:00 Tatyana Nikolova Tatyana.E.Nikolova@intel.com 2012-12-06T19:58:27+00:00 0d38a8789caf511e5b997caf76eb32fddbff051c commit 7bfcfa51c35cdd2d37e0d70fc11790642dd11fb3 upstream. The terminate timer needs to be initialized just once. Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: CAI Qian <caiqian@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 7bfcfa51c35cdd2d37e0d70fc11790642dd11fb3 upstream.

The terminate timer needs to be initialized just once.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: CAI Qian <caiqian@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RDMA/nes: Fix for crash when registering zero length MR for CQ 2013-01-17T16:50:51+00:00 Tatyana Nikolova Tatyana.E.Nikolova@intel.com 2012-12-06T20:05:02+00:00 e5ca2896f817ef43802387ae2f41a9c70e30ee86 commit 7d9c199a55200c9b9fcad08e150470d02fb385be upstream. Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: CAI Qian <caiqian@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 7d9c199a55200c9b9fcad08e150470d02fb385be upstream.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: CAI Qian <caiqian@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RDMA/cxgb4: Drop peer_abort when no endpoint found 2012-06-01T07:18:16+00:00 Steve Wise swise@opengridcomputing.com 2012-04-30T20:31:29+00:00 ece17ce979baa62e074ba2d617e3a3ffc77ada84 commit 14b9222808bb8bfefc71f72bc0dbdcf3b2f0140f upstream. Log a warning and drop the abort message. Otherwise we will do a bogus wake_up() and crash. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 14b9222808bb8bfefc71f72bc0dbdcf3b2f0140f upstream.

Log a warning and drop the abort message.  Otherwise we will do a
bogus wake_up() and crash.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RDMA/cxgb4: Use dst parameter in import_ep() 2012-06-01T07:18:16+00:00 Steve Wise swise@opengridcomputing.com 2012-04-27T15:24:33+00:00 466dab407e47968777912aa23e5c66d1bd715405 commit bd61baaf59669accae2720799394a51fecabe5d9 upstream. Function import_ep() is incorrectly using ep->dst instead of the dst ptr passed in. This causes a crash when accepting new rdma connections becase ep->dst is not initialized yet. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit bd61baaf59669accae2720799394a51fecabe5d9 upstream.

Function import_ep() is incorrectly using ep->dst instead of the dst
ptr passed in.  This causes a crash when accepting new rdma connections
becase ep->dst is not initialized yet.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RDMA/cxgb4: Always wake up waiters in c4iw_peer_abort_intr() 2012-06-01T07:18:15+00:00 Steve Wise swise@opengridcomputing.com 2012-04-27T14:59:16+00:00 b7a1a2016dba604884bfffb2e5ccf0ebc41b6e52 commit 0f1dcfae6bc5563424346ad3a03282b8235a4c33 upstream. This fixes a race where an ingress abort fails to wake up the thread blocked in rdma_init() causing the app to hang. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 0f1dcfae6bc5563424346ad3a03282b8235a4c33 upstream.

This fixes a race where an ingress abort fails to wake up the thread
blocked in rdma_init() causing the app to hang.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'ib-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2012-04-26T22:35:35+00:00 Linus Torvalds torvalds@linux-foundation.org 2012-04-26T22:35:35+00:00 ebcf596d89f9686308db768e527a22165831b473 Pull infiniband fixes from Roland Dreier: "A few fixes for regressions introduced in 3.4-rc1: - fix memory leak in mlx4 - fix two problems with new MAD response generation code" * tag 'ib-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Fix memory leaks in ib_link_query_port() IB/mad: Don't send response for failed MADs IB/mad: Set 'D' bit in response for unhandled MADs 
Pull infiniband fixes from Roland Dreier:
 "A few fixes for regressions introduced in 3.4-rc1:
   - fix memory leak in mlx4
   - fix two problems with new MAD response generation code"

* tag 'ib-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mlx4: Fix memory leaks in ib_link_query_port()
  IB/mad: Don't send response for failed MADs
  IB/mad: Set 'D' bit in response for unhandled MADs
IB/mlx4: Fix memory leaks in ib_link_query_port() 2012-04-24T23:11:21+00:00 Jesper Juhl jj@chaosbits.net 2012-04-11T21:43:29+00:00 bf6b47deb40f9fc8ddb4573373dc9614aab59d35 If the call to mlx4_MAD_IFC() fails in ib_link_query_port() we will currently do 'return err;' which will leak 'in_mad' and 'out_mad'. We should instead do 'goto out;' where we'll properly free the memory we previously allocated. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Acked-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com> 
If the call to mlx4_MAD_IFC() fails in ib_link_query_port() we will
currently do 'return err;' which will leak 'in_mad' and 'out_mad'.  We
should instead do 'goto out;' where we'll properly free the memory we
previously allocated.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
IB/mlx4: Don't return an invalid speed when a port is down 2012-04-02T17:55:24+00:00 Or Gerlitz ogerlitz@mellanox.com 2012-04-02T14:45:20+00:00 d2ef406866620f0450ad0b4c7fb5c2796c7bf245 When the IB port is down, the active_speed value returned by the MAD_IFC command is seven (7) which isn't among the defined IB speeds in enum ib_port_speed, and this invalid speed value is passed up to higher layers or applications who do port query. Fix that by setting the speed to be SDR -- the lowest possible -- when the port is down. Signed-off-by: Roland Dreier <roland@purestorage.com> 
When the IB port is down, the active_speed value returned by the
MAD_IFC command is seven (7) which isn't among the defined IB speeds
in enum ib_port_speed, and this invalid speed value is passed up to
higher layers or applications who do port query.

Fix that by setting the speed to be SDR -- the lowest possible -- when
the port is down.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Remove all #inclusions of asm/system.h 2012-03-28T17:30:03+00:00 David Howells dhowells@redhat.com 2012-03-28T17:30:03+00:00 9ffc93f203c18a70623f21950f1dd473c9ec48cd Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: David Howells <dhowells@redhat.com> 
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>