linux-toradex.git, branch v4.9.6

Linux 4.9.6

2017-01-26T07:25:24+00:00

libceph: stop allocating a new cipher on every crypto request

2017-01-26T07:24:46+00:00

commit 7af3ea189a9a13f090de51c97f676215dabc1205 upstream.

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:
     [] ? schedule+0x31/0x80
     [] ? schedule_preempt_disabled+0xa/0x10
     [] ? __mutex_lock_slowpath+0xb4/0x130
     [] ? mutex_lock+0x1b/0x30
     [] ? xfs_reclaim_inodes_ag+0x233/0x2d0 [xfs]
     [] ? move_active_pages_to_lru+0x125/0x270
     [] ? radix_tree_gang_lookup_tag+0xc5/0x1c0
     [] ? __list_lru_walk_one.isra.3+0x33/0x120
     [] ? xfs_reclaim_inodes_nr+0x31/0x40 [xfs]
     [] ? super_cache_scan+0x17e/0x190
     [] ? shrink_slab.part.38+0x1e3/0x3d0
     [] ? shrink_node+0x10a/0x320
     [] ? do_try_to_free_pages+0xf4/0x350
     [] ? try_to_free_pages+0xea/0x1b0
     [] ? __alloc_pages_nodemask+0x61d/0xe60
     [] ? cache_grow_begin+0x9d/0x560
     [] ? fallback_alloc+0x148/0x1c0
     [] ? __crypto_alloc_tfm+0x37/0x130
     [] ? __kmalloc+0x1eb/0x580
     [] ? crush_choose_firstn+0x3eb/0x470 [libceph]
     [] ? __crypto_alloc_tfm+0x37/0x130
     [] ? crypto_spawn_tfm+0x39/0x60
     [] ? crypto_cbc_init_tfm+0x23/0x40 [cbc]
     [] ? __crypto_alloc_tfm+0xcc/0x130
     [] ? crypto_skcipher_init_tfm+0x113/0x180
     [] ? crypto_create_tfm+0x43/0xb0
     [] ? crypto_larval_lookup+0x150/0x150
     [] ? crypto_alloc_tfm+0x72/0x120
     [] ? ceph_aes_encrypt2+0x67/0x400 [libceph]
     [] ? ceph_pg_to_up_acting_osds+0x84/0x5b0 [libceph]
     [] ? release_sock+0x40/0x90
     [] ? tcp_recvmsg+0x4b4/0xae0
     [] ? ceph_encrypt2+0x54/0xc0 [libceph]
     [] ? ceph_x_encrypt+0x5d/0x90 [libceph]
     [] ? calcu_signature+0x5f/0x90 [libceph]
     [] ? ceph_x_sign_message+0x35/0x50 [libceph]
     [] ? prepare_write_message_footer+0x5c/0xa0 [libceph]
     [] ? ceph_con_workfn+0x2258/0x2dd0 [libceph]
     [] ? queue_con_delay+0x33/0xd0 [libceph]
     [] ? __submit_request+0x20d/0x2f0 [libceph]
     [] ? ceph_osdc_start_request+0x28/0x30 [libceph]
     [] ? rbd_queue_workfn+0x2f3/0x350 [rbd]
     [] ? process_one_work+0x160/0x410
     [] ? worker_thread+0x4d/0x480
     [] ? process_one_work+0x410/0x410
     [] ? kthread+0xcd/0xf0
     [] ? ret_from_fork+0x1f/0x40
     [] ? 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 
Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

libceph: uninline ceph_crypto_key_destroy()

2017-01-26T07:24:46+00:00

commit 6db2304aabb070261ad34923bfd83c43dfb000e3 upstream.

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

tools/virtio/ringtest: fix run-on-all.sh for offline cpus

2017-01-26T07:24:46+00:00

commit 21f5eda9b8671744539c8295b9df62991fffb2ce upstream.

Since ef1b144d ("tools/virtio/ringtest: fix run-on-all.sh to work
without /dev/cpu") run-on-all.sh uses seq 0 $HOST_AFFINITY as the list
of ids of the CPUs to run the command on (assuming ids of online CPUs
are consecutive and start from 0), where $HOST_AFFINITY is the highest
CPU id in the system previously determined using lscpu.  This can fail
on systems with offline CPUs.

Instead let's use lscpu to determine the list of online CPUs.

Signed-off-by: Halil Pasic 
Fixes: ef1b144d ("tools/virtio/ringtest: fix run-on-all.sh to work without
/dev/cpu")
Reviewed-by: Sascha Silbe 
Signed-off-by: Cornelia Huck 
Signed-off-by: Greg Kroah-Hartman

selftest/powerpc: Wrong PMC initialized in pmc56_overflow test

2017-01-26T07:24:45+00:00

commit df21d2fa733035e4d414379960f94b2516b41296 upstream.

Test uses PMC2 to count the event. But PMC1 is being initialized.
Patch to fix it.

Fixes: 3752e453f6ba ('selftests/powerpc: Add tests of PMU EBBs')
Signed-off-by: Madhavan Srinivasan 
Signed-off-by: Michael Ellerman 
Signed-off-by: Greg Kroah-Hartman

soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()

2017-01-26T07:24:45+00:00

commit 36b29eb30ee0f6c99f06bea406c23a3fd4cbb80b upstream.

Fix to return a negative error code from the kthread_run() error
handling case instead of 0, as done elsewhere in this function.

Fixes: cdd5de500b2c ("soc: ti: Add wkup_m3_ipc driver")
Signed-off-by: Wei Yongjun 
Signed-off-by: Tony Lindgren 
Signed-off-by: Greg Kroah-Hartman

spi: pxa2xx: add missed break

2017-01-26T07:24:45+00:00

commit a2dd8af00ca7fff4972425a4a6b19dd1840dc807 upstream.

The commit 7c7289a40425 ("spi: pxa2xx: Default thresholds to PXA
configuration") while splitting up CE4100 code obviously missed a break
condition in one chunk. Add it here.

Looks like we have no active user of CE4100, though better to fix this later
than never.

Fixes: commit 7c7289a40425 ("spi: pxa2xx: Default thresholds to PXA configuration")
Signed-off-by: Andy Shevchenko 
Signed-off-by: Mark Brown 
Signed-off-by: Greg Kroah-Hartman

dmaengine: pl330: Fix runtime PM support for terminated transfers

2017-01-26T07:24:45+00:00

commit 5c9e6c2b2ba3ec3a442e2fb5b4286498f8b4dcb7 upstream.

PL330 DMA engine driver is leaking a runtime reference after any terminated
DMA transactions. This patch fixes this issue by tracking runtime PM state
of the device and making additional call to pm_runtime_put() in terminate_all
callback if needed.

Fixes: ae43b3289186 ("ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12")
Signed-off-by: Marek Szyprowski 
Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: rcar-dmac: unmap slave resource when channel is freed

2017-01-26T07:24:45+00:00

commit 3139dc8ded6f27552a248d23fe9f086e3027fa12 upstream.

The slave mapping should be removed together with other channel
resources when the channel is freed. If it's not unmapped it will hang
around forever after the channel is freed.

Fixes: 9f878603dbdb7db3 ("dmaengine: rcar-dmac: add iommu support for slave transfers")
Reported-by: Laurent Pinchart 
Signed-off-by: Niklas Söderlund 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

s5p-mfc: Fix clock management in s5p_mfc_release() function

2017-01-26T07:24:45+00:00

commit c0026c7bfb95c250c3e34fde59f96ad72fd730d6 upstream.

Clock control indirectly requires access to MFC device, so call it only
if we are sure that the device exists in s5p_mfc_release function.
s5p_mfc_remove() calls s5p_mfc_final_pm(), which releases all PM related
resources, including clocks, so any call to clocks related functions
is not valid after s5p_mfc_final_pm().

Fixes: d695c12 ("[media] media: s5p-mfc fix invalid memory access from
s5p_mfc_release()")

Signed-off-by: Marek Szyprowski 
Signed-off-by: Sylwester Nawrocki 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Greg Kroah-Hartman