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[PATCH 3.14 00/53] 3.14.74-stable review

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  [PATCH 3.14 00/53] 3.14.74-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 25/53] signal: remove warning about using SI_TKILL in rt_[tg]sigqueueinfo Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 16/53] kprobes/x86: Clear TF bit in fault on single-stepping Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 40/53] iio: accel: kxsd9: fix the usage of spi_w8r8() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 39/53] staging: iio: accel: fix error check Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 24/53] nfsd: check permissions when setting ACLs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 03/53] ipmr/ip6mr: Initialize the last assert time of mfc entries. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 05/53] usb: quirks: Add no-lpm quirk for Acer C120 LED Projector Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 17/53] x86/amd_nb: Fix boot crash on non-AMD systems Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 48/53] scsi: fix race between simultaneous decrements of ->host_failed Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:00 +0200
    [PATCH 3.14 49/53] Fix reconnect to not defer smb3 session reconnect long after socket reconnect Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:10 +0200
    [PATCH 3.14 47/53] ALSA: ctl: Stop notification after disconnection Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:10 +0200
    [PATCH 3.14 36/53] perf/x86: Honor the architectural performance monitoring version Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 52/53] tmpfs: fix regression hang in fallocate undo Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 43/53] iio:ad7266: Fix probe deferral for vref Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 15/53] x86, build: copy ldlinux.c32 to image.iso Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 50/53] xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 31/53] HID: hiddev: validate num_values for HIDIOCGUSAGES, HIDIOCSUSAGES commands Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 13/53] powerpc/tm: Always reclaim in start_thread() for exec() class syscalls Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 41/53] iio:ad7266: Fix broken regulator error handling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 46/53] ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 45/53] ALSA: dummy: Fix a use-after-free at closing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 11/53] powerpc/iommu: Remove the dependency on EEH struct in DDW mechanism Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 53/53] s390/seccomp: fix error return for filtered system calls Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 44/53] tty/vt/keyboard: fix OOB access in do_compute_shiftstate() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 12/53] powerpc/pseries: Fix PCI config address for DDW Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 32/53] tracing: Handle NULL formats in hold_module_trace_bprintk_format() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 14/53] USB: EHCI: declare hostpc register as zero-length array Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 37/53] perf/x86: Fix undefined shift on 32-bit kernels Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 29/53] kvm: Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 34/53] drm/radeon: fix asic initialization for virtualized environments Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 51/53] tmpfs: dont undo fallocate past its last page Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 30/53] HID: elo: kill not flush the work Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 23/53] posix_acl: Add set_posix_acl Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 42/53] iio:ad7266: Fix support for optional regulators Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-25 23:20 +0200
    [PATCH 3.14 04/53] net: alx: Work around the DMA RX overflow issue Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 21/53] mm: Export migrate_page_move_mapping and migrate_page_copy Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 22/53] UBIFS: Implement ->migratepage() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 20/53] ARM: 8578/1: mm: ensure pmd_present only checks the valid bit Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 19/53] NFS: Fix another OPEN_DOWNGRADE bug Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 01/53] crypto: ux500 - memmove the right size Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 07/53] usb: musb: Ensure rx reinit occurs for shared_fifo endpoints Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 18/53] make nfs_atomic_open() call d_drop() on all ->open_context() errors. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 02/53] sit: correct IP protocol used in ipip6_err Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 10/53] IB/mlx4: Properly initialize GRH TClass and FlowLabel in AHs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 28/53] KEYS: potential uninitialized variable Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 09/53] mac80211_hwsim: Add missing check for HWSIM_ATTR_SIGNAL Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    [PATCH 3.14 06/53] usb: musb: Stop bulk endpoint while queue is rotated Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:50 +0200
    Re: [PATCH 3.14 00/53] 3.14.74-stable review Shuah Khan <shuah.kh@samsung.com> - 2016-07-26 04:10 +0200
    Re: [PATCH 3.14 00/53] 3.14.74-stable review Guenter Roeck <linux@roeck-us.net> - 2016-07-26 16:00 +0200

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#1450220 — [PATCH 3.14 01/53] crypto: ux500 - memmove the right size

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Walleij <linus.walleij@linaro.org>

commit 19ced623db2fe91604d69f7d86b03144c5107739 upstream.

The hash buffer is really HASH_BLOCK_SIZE bytes, someone
must have thought that memmove takes n*u32 words by mistake.
Tests work as good/bad as before after this patch.

Cc: Joakim Bech <joakim.bech@linaro.org>
Reported-by: David Binderman <linuxdev.baldrick@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/ux500/hash/hash_core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/crypto/ux500/hash/hash_core.c
+++ b/drivers/crypto/ux500/hash/hash_core.c
@@ -797,7 +797,7 @@ static int hash_process_data(struct hash
 						&device_data->state);
 				memmove(req_ctx->state.buffer,
 					device_data->state.buffer,
-					HASH_BLOCK_SIZE / sizeof(u32));
+					HASH_BLOCK_SIZE);
 				if (ret) {
 					dev_err(device_data->dev,
 						"%s: hash_resume_state() failed!\n",
@@ -848,7 +848,7 @@ static int hash_process_data(struct hash
 
 			memmove(device_data->state.buffer,
 				req_ctx->state.buffer,
-				HASH_BLOCK_SIZE / sizeof(u32));
+				HASH_BLOCK_SIZE);
 			if (ret) {
 				dev_err(device_data->dev, "%s: hash_save_state() failed!\n",
 					__func__);

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#1450221 — [PATCH 3.14 07/53] usb: musb: Ensure rx reinit occurs for shared_fifo endpoints

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrew Goodbody <andrew.goodbody@cambrionix.com>

commit f3eec0cf784e0d6c47822ca6b66df3d5812af7e6 upstream.

shared_fifo endpoints would only get a previous tx state cleared
out, the rx state was only cleared for non shared_fifo endpoints
Change this so that the rx state is cleared for all endpoints.
This addresses an issue that resulted in rx packets being dropped
silently.

Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/musb/musb_host.c |   13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -583,14 +583,13 @@ musb_rx_reinit(struct musb *musb, struct
 		musb_writew(ep->regs, MUSB_TXCSR, 0);
 
 	/* scrub all previous state, clearing toggle */
-	} else {
-		csr = musb_readw(ep->regs, MUSB_RXCSR);
-		if (csr & MUSB_RXCSR_RXPKTRDY)
-			WARNING("rx%d, packet/%d ready?\n", ep->epnum,
-				musb_readw(ep->regs, MUSB_RXCOUNT));
-
-		musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
 	}
+	csr = musb_readw(ep->regs, MUSB_RXCSR);
+	if (csr & MUSB_RXCSR_RXPKTRDY)
+		WARNING("rx%d, packet/%d ready?\n", ep->epnum,
+			musb_readw(ep->regs, MUSB_RXCOUNT));
+
+	musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
 
 	/* target addr and (for multipoint) hub addr/port */
 	if (musb->is_multipoint) {

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#1450222 — [PATCH 3.14 18/53] make nfs_atomic_open() call d_drop() on all ->open_context() errors.

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Al Viro <viro@ZenIV.linux.org.uk>

commit d20cb71dbf3487f24549ede1a8e2d67579b4632e upstream.

In "NFSv4: Move dentry instantiation into the NFSv4-specific atomic open code"
unconditional d_drop() after the ->open_context() had been removed.  It had
been correct for success cases (there ->open_context() itself had been doing
dcache manipulations), but not for error ones.  Only one of those (ENOENT)
got a compensatory d_drop() added in that commit, but in fact it should've
been done for all errors.  As it is, the case of O_CREAT non-exclusive open
on a hashed negative dentry racing with e.g. symlink creation from another
client ended up with ->open_context() getting an error and proceeding to
call nfs_lookup().  On a hashed dentry, which would've instantly triggered
BUG_ON() in d_materialise_unique() (or, these days, its equivalent in
d_splice_alias()).

Tested-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/nfs/dir.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1459,9 +1459,9 @@ int nfs_atomic_open(struct inode *dir, s
 		err = PTR_ERR(inode);
 		trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
 		put_nfs_open_context(ctx);
+		d_drop(dentry);
 		switch (err) {
 		case -ENOENT:
-			d_drop(dentry);
 			d_add(dentry, NULL);
 			break;
 		case -EISDIR:

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#1450224 — [PATCH 3.14 02/53] sit: correct IP protocol used in ipip6_err

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Simon Horman <simon.horman@netronome.com>

[ Upstream commit d5d8760b78d0cfafe292f965f599988138b06a70 ]

Since 32b8a8e59c9c ("sit: add IPv4 over IPv4 support")
ipip6_err() may be called for packets whose IP protocol is
IPPROTO_IPIP as well as those whose IP protocol is IPPROTO_IPV6.

In the case of IPPROTO_IPIP packets the correct protocol value is not
passed to ipv4_update_pmtu() or ipv4_redirect().

This patch resolves this problem by using the IP protocol of the packet
rather than a hard-coded value. This appears to be consistent
with the usage of the protocol of a packet by icmp_socket_deliver()
the caller of ipip6_err().

I was able to exercise the redirect case by using a setup where an ICMP
redirect was received for the destination of the encapsulated packet.
However, it appears that although incorrect the protocol field is not used
in this case and thus no problem manifests.  On inspection it does not
appear that a problem will manifest in the fragmentation needed/update pmtu
case either.

In short I believe this is a cosmetic fix. None the less, the use of
IPPROTO_IPV6 seems wrong and confusing.

Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/sit.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -559,13 +559,13 @@ static int ipip6_err(struct sk_buff *skb
 
 	if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
 		ipv4_update_pmtu(skb, dev_net(skb->dev), info,
-				 t->parms.link, 0, IPPROTO_IPV6, 0);
+				 t->parms.link, 0, iph->protocol, 0);
 		err = 0;
 		goto out;
 	}
 	if (type == ICMP_REDIRECT) {
 		ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
-			      IPPROTO_IPV6, 0);
+			      iph->protocol, 0);
 		err = 0;
 		goto out;
 	}

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#1450225 — [PATCH 3.14 10/53] IB/mlx4: Properly initialize GRH TClass and FlowLabel in AHs

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>

commit 8c5122e45a10a9262f872b53f151a592e870f905 upstream.

When this code was reworked for IBoE support the order of assignments
for the sl_tclass_flowlabel got flipped around resulting in
TClass & FlowLabel being permanently set to 0 in the packet headers.

This breaks IB routers that rely on these headers, but only affects
kernel users - libmlx4 does this properly for user space.

Fixes: fa417f7b520e ("IB/mlx4: Add support for IBoE")
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/hw/mlx4/ah.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx4/ah.c
+++ b/drivers/infiniband/hw/mlx4/ah.c
@@ -46,6 +46,7 @@ static struct ib_ah *create_ib_ah(struct
 
 	ah->av.ib.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
 	ah->av.ib.g_slid  = ah_attr->src_path_bits;
+	ah->av.ib.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
 	if (ah_attr->ah_flags & IB_AH_GRH) {
 		ah->av.ib.g_slid   |= 0x80;
 		ah->av.ib.gid_index = ah_attr->grh.sgid_index;
@@ -63,7 +64,6 @@ static struct ib_ah *create_ib_ah(struct
 		       !(1 << ah->av.ib.stat_rate & dev->caps.stat_rate_support))
 			--ah->av.ib.stat_rate;
 	}
-	ah->av.ib.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
 
 	return &ah->ibah;
 }

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#1450226 — [PATCH 3.14 28/53] KEYS: potential uninitialized variable

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 38327424b40bcebe2de92d07312c89360ac9229a upstream.

If __key_link_begin() failed then "edit" would be uninitialized.  I've
added a check to fix that.

This allows a random user to crash the kernel, though it's quite
difficult to achieve.  There are three ways it can be done as the user
would have to cause an error to occur in __key_link():

 (1) Cause the kernel to run out of memory.  In practice, this is difficult
     to achieve without ENOMEM cropping up elsewhere and aborting the
     attempt.

 (2) Revoke the destination keyring between the keyring ID being looked up
     and it being tested for revocation.  In practice, this is difficult to
     time correctly because the KEYCTL_REJECT function can only be used
     from the request-key upcall process.  Further, users can only make use
     of what's in /sbin/request-key.conf, though this does including a
     rejection debugging test - which means that the destination keyring
     has to be the caller's session keyring in practice.

 (3) Have just enough key quota available to create a key, a new session
     keyring for the upcall and a link in the session keyring, but not then
     sufficient quota to create a link in the nominated destination keyring
     so that it fails with EDQUOT.

The bug can be triggered using option (3) above using something like the
following:

	echo 80 >/proc/sys/kernel/keys/root_maxbytes
	keyctl request2 user debug:fred negate @t

The above sets the quota to something much lower (80) to make the bug
easier to trigger, but this is dependent on the system.  Note also that
the name of the keyring created contains a random number that may be
between 1 and 10 characters in size, so may throw the test off by
changing the amount of quota used.

Assuming the failure occurs, something like the following will be seen:

	kfree_debugcheck: out of range ptr 6b6b6b6b6b6b6b68h
	------------[ cut here ]------------
	kernel BUG at ../mm/slab.c:2821!
	...
	RIP: 0010:[<ffffffff811600f9>] kfree_debugcheck+0x20/0x25
	RSP: 0018:ffff8804014a7de8  EFLAGS: 00010092
	RAX: 0000000000000034 RBX: 6b6b6b6b6b6b6b68 RCX: 0000000000000000
	RDX: 0000000000040001 RSI: 00000000000000f6 RDI: 0000000000000300
	RBP: ffff8804014a7df0 R08: 0000000000000001 R09: 0000000000000000
	R10: ffff8804014a7e68 R11: 0000000000000054 R12: 0000000000000202
	R13: ffffffff81318a66 R14: 0000000000000000 R15: 0000000000000001
	...
	Call Trace:
	  kfree+0xde/0x1bc
	  assoc_array_cancel_edit+0x1f/0x36
	  __key_link_end+0x55/0x63
	  key_reject_and_link+0x124/0x155
	  keyctl_reject_key+0xb6/0xe0
	  keyctl_negate_key+0x10/0x12
	  SyS_keyctl+0x9f/0xe7
	  do_syscall_64+0x63/0x13a
	  entry_SYSCALL64_slow_path+0x25/0x25

Fixes: f70e2e06196a ('KEYS: Do preallocation for __key_link()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 security/keys/key.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -575,7 +575,7 @@ int key_reject_and_link(struct key *key,
 
 	mutex_unlock(&key_construction_mutex);
 
-	if (keyring)
+	if (keyring && link_ret == 0)
 		__key_link_end(keyring, &key->index_key, edit);
 
 	/* wake up anyone waiting for a key to be constructed */

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#1450232 — [PATCH 3.14 09/53] mac80211_hwsim: Add missing check for HWSIM_ATTR_SIGNAL

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Martin Willi <martin@strongswan.org>

commit 62397da50bb20a6b812c949ef465d7e69fe54bb6 upstream.

A wmediumd that does not send this attribute causes a NULL pointer
dereference, as the attribute is accessed even if it does not exist.

The attribute was required but never checked ever since userspace frame
forwarding has been introduced. The issue gets more problematic once we
allow wmediumd registration from user namespaces.

Fixes: 7882513bacb1 ("mac80211_hwsim driver support userspace frame tx/rx")
Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/mac80211_hwsim.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2251,6 +2251,7 @@ static int hwsim_tx_info_frame_received_
 	if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
 	    !info->attrs[HWSIM_ATTR_FLAGS] ||
 	    !info->attrs[HWSIM_ATTR_COOKIE] ||
+	    !info->attrs[HWSIM_ATTR_SIGNAL] ||
 	    !info->attrs[HWSIM_ATTR_TX_INFO])
 		goto out;
 

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#1450235 — [PATCH 3.14 06/53] usb: musb: Stop bulk endpoint while queue is rotated

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrew Goodbody <andrew.goodbody@cambrionix.com>

commit 7b2c17f829545df27a910e8d82e133c21c9a8c9c upstream.

Ensure that the endpoint is stopped by clearing REQPKT before
clearing DATAERR_NAKTIMEOUT before rotating the queue on the
dedicated bulk endpoint.
This addresses an issue where a race could result in the endpoint
receiving data before it was reprogrammed resulting in a warning
about such data from musb_rx_reinit before it was thrown away.
The data thrown away was a valid packet that had been correctly
ACKed which meant the host and device got out of sync.

Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/musb/musb_host.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -950,9 +950,15 @@ static void musb_bulk_nak_timeout(struct
 	if (is_in) {
 		dma = is_dma_capable() ? ep->rx_channel : NULL;
 
-		/* clear nak timeout bit */
+		/*
+		 * Need to stop the transaction by clearing REQPKT first
+		 * then the NAK Timeout bit ref MUSBMHDRC USB 2.0 HIGH-SPEED
+		 * DUAL-ROLE CONTROLLER Programmer's Guide, section 9.2.2
+		 */
 		rx_csr = musb_readw(epio, MUSB_RXCSR);
 		rx_csr |= MUSB_RXCSR_H_WZC_BITS;
+		rx_csr &= ~MUSB_RXCSR_H_REQPKT;
+		musb_writew(epio, MUSB_RXCSR, rx_csr);
 		rx_csr &= ~MUSB_RXCSR_DATAERROR;
 		musb_writew(epio, MUSB_RXCSR, rx_csr);
 

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#1450321

On 07/25/2016 02:54 PM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 3.14.74 release.
> There are 53 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed Jul 27 20:35:00 UTC 2016.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	kernel.org/pub/linux/kernel/v3.x/stable-review/patch-3.14.74-rc1.gz
> or in the git tree and branch at:
>   git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-3.14.y
> and the diffstat can be found below.
> 


Compiled and booted on my test system. No dmesg regressions,

thanks,
-- Shuah

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#1450605

On 07/25/2016 01:54 PM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 3.14.74 release.
> There are 53 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Wed Jul 27 20:35:00 UTC 2016.
> Anything received after that time might be too late.
>

Build results:
	total: 131 pass: 131 fail: 0
Qemu test results:
	total: 89 pass: 88 fail: 1
Failed tests:
	alpha:defconfig

The failure is

Inconsistent kallsyms data
Try make KALLSYMS_EXTRA_PASS=1 as a workaround

and gcc specific; it passes with gcc 4.6.3 and fails with gcc 4.8.3. Nothing to be
concerned about (yet).

Details are available at http://kerneltests.org/builders.

Guenter

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