Commit Graph

561517 Commits

Author SHA1 Message Date
Hannes Frederic Sowa
9490f886b1 af-unix: passcred support for sendpage
sendpage did not care about credentials at all. This could lead to
situations in which because of fd passing between processes we could
append data to skbs with different scm data. It is illegal to splice those
skbs together. Instead we have to allocate a new skb and if requested
fill out the scm details.

Fixes: 869e7c6248 ("net: af_unix: implement stream sendpage support")
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 15:16:06 -05:00
Ming Lei
a88d32af18 blk-merge: fix computing bio->bi_seg_front_size in case of single segment
When bio has only one physical segment, we should set bio's
bi_seg_front_size as the real(final) size of the single segment.

Fixes: 02e707424c2ea(blk-merge: fix blk_bio_segment_split)
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-30 13:02:36 -07:00
David S. Miller
6e0f0331a3 Merge branch 'stmmac-fixes'
Giuseppe Cavallaro says:

====================
Spare stmmac fixes

These are some fixes for the stmmac d.d. tested on STi platforms.
They are for some part of the PM, STi glue and rx path when test
Jumbo.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 14:52:52 -05:00
Giuseppe CAVALLARO
e527c4a769 stmmac: fix oversized frame reception
The receive skb buffers can be preallocated when the link is opened
according to mtu size.
While testing on a network environment with not standard MTU (e.g. 3000),
a panic occurred if an incoming packet had a length greater than rx skb
buffer size. This is because the HW is programmed to copy, from the DMA,
an Jumbo frame and the Sw must check if the allocated buffer is enough to
store the frame.

Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 14:52:52 -05:00
Giuseppe CAVALLARO
ae26c1c6cb stmmac: fix PHY reset during resume
When stmmac_mdio_reset, was called from stmmac_resume, it was not
resetting the PHY due to which MAC was not getting reset properly and
hence ethernet interface not was resumed properly.
The issue was currently only reproducible on stih301-b2204.

Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 14:52:51 -05:00
Giuseppe CAVALLARO
22407e1317 stmmac: dwmac-sti: fix st,tx-retime-src check
In case of the st,tx-retime-src is missing from device-tree
(it's an optional field) the driver will invoke the strcasecmp to check
which clock has been selected and this is a bug; the else condition
is needed.

In the dwmac_setup, the "rs" variable, passed to the strcasecmp, was not
initialized and the compiler, depending on the options adopted, could
take it in some different part of the stack generating the hang in such
configuration.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 14:52:51 -05:00
Giuseppe CAVALLARO
61adcc03bd stmmac: fix csr clock divisor for 300MHz
This patch is to fix the csr clock in case of 300MHz is provided.

Reported-by: Kent Borg <Kent.Borg@csr.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 14:52:51 -05:00
Giuseppe CAVALLARO
ac316c783d stmmac: fix a filter problem after resuming.
When resume the HW is re-configured but some settings can be lost.
For example, the MAC Address_X High/Low Registers used for VLAN tagging..
So, while resuming, the set_filter callback needs to be invoked to
re-program perfect and hash-table registers.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-30 14:52:51 -05:00
Pavel Machek
0c62c6599b add blacklist for thinkpad T40p
Thinkpad T40p needs agpmode 1.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-11-30 14:44:34 -05:00
Christian König
82b9c55b1e drm/amdgpu: fix VM page table reference counting
We use the reservation object of the page directory for the page tables as
well, because of this the page directory should be freed last. Ensure that
by keeping a reference from the page tables to the directory.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-11-30 14:41:33 -05:00
Christian König
585116c5fa drm/amdgpu: fix userptr flags check
That got messed up while porting it from Radeon.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-11-30 14:38:47 -05:00
Jan Kara
74cedf9b6c direct-io: Fix negative return from dio read beyond eof
Assume a filesystem with 4KB blocks. When a file has size 1000 bytes and
we issue direct IO read at offset 1024, blockdev_direct_IO() reads the
tail of the last block and the logic for handling short DIO reads in
dio_complete() results in a return value -24 (1000 - 1024) which
obviously confuses userspace.

Fix the problem by bailing out early once we sample i_size and can
reliably check that direct IO read starts beyond i_size.

Reported-by: Avi Kivity <avi@scylladb.com>
Fixes: 9fe55eea7e
CC: stable@vger.kernel.org
CC: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-30 10:15:42 -07:00
Dan Williams
bc0d0d093b libnvdimm, e820: skip module loading when no type-12
If there are no persistent memory ranges present then don't bother
creating the platform device.  Otherwise, it loads the full libnvdimm
sub-system only to discover no resources present.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-11-30 09:10:33 -08:00
Guenter Roeck
c86576ea11 mn10300: Select CONFIG_HAVE_UID16 to fix build failure
mn10300 builds fail with

fs/stat.c: In function 'cp_old_stat':
fs/stat.c:163:2: error: 'old_uid_t' undeclared

ipc/util.c: In function 'ipc64_perm_to_ipc_perm':
ipc/util.c:540:2: error: 'old_uid_t' undeclared

Select CONFIG_HAVE_UID16 and remove local definition of CONFIG_UID16
to fix the problem.

Fixes: fbc416ff86 ("arm64: fix building without CONFIG_UID16")
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-11-30 07:01:40 -08:00
Grygorii Strashko
000255b7df gpio: omap: drop omap1 mpuio specific irq_mask/unmask callbacks
Originally OMAP MPUIO GPIO irqchip was implemented using Generic irq
chip, but after set of reworks Generic irq chip code was replaced by
common OMAP GPIO implementation and finally removed by
commit d2d05c65c4 ("gpio: omap: Fix regression for MPUIO interrupts").
Unfortunately, above commit left .irq_mask/unmask callbacks assigned
as below for MPUIO GPIO case:
	irqc->irq_mask = irq_gc_mask_set_bit;
	irqc->irq_unmask = irq_gc_mask_clr_bit;

This now causes boot failure on OMAP1 platforms, after
commit 450fa54cfd ("gpio: omap: convert to use generic irq handler")
which forces these callbacks to be called during GPIO IRQs mapping
from gpiochip_irq_map:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 75 [#1] ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.0-rc1-e3-los_afe0c+-00002-g25379c0-dirty #1
Hardware name: Amstrad E3 (Delta)
task: c1836000 ti: c1838000 task.ti: c1838000
PC is at irq_gc_mask_set_bit+0x1c/0x60
LR is at __irq_do_set_handler+0x118/0x15c
pc : [<c004848c>]    lr : [<c0047d4c>]    psr: 600000d3
sp : c1839c90  ip : c1862c64  fp : c1839c9c
r10: 00000000  r9 : c0411950  r8 : c0411bbc
r7 : 00000000  r6 : c185c310  r5 : c00444e8  r4 : c185c300
r3 : c1854b50  r2 : 00000000  r1 : 00000000  r0 : c185c310
Flags: nZCv  IRQs off  FIQs off  Mode SVC_32  ISA ARM  Segment kernel
Control: 0000317f  Table: 10004000  DAC: 00000057
Process swapper (pid: 1, stack limit = 0xc1838190)
Stack: (0xc1839c90 to 0xc183a000)

[...]

Backtrace:
[<c0048470>] (irq_gc_mask_set_bit) from [<c0047d4c>] (__irq_do_set_handler+0x118/0x15c)
[<c0047c34>] (__irq_do_set_handler) from [<c0047dd4>] (__irq_set_handler+0x44/0x5c)
 r6:00000000 r5:c00444e8 r4:c185c300
[<c0047d90>] (__irq_set_handler) from [<c0047e1c>] (irq_set_chip_and_handler_name+0x30/0x34)
 r7:00000050 r6:00000000 r5:c00444e8 r4:00000050
[<c0047dec>] (irq_set_chip_and_handler_name) from [<c01b345c>] (gpiochip_irq_map+0x3c/0x8c)
 r7:00000050 r6:00000000 r5:00000050 r4:c1862c64
[<c01b3420>] (gpiochip_irq_map) from [<c0049670>] (irq_domain_associate+0x7c/0x1c4)
 r5:c185c310 r4:c185cb00
[<c00495f4>] (irq_domain_associate) from [<c0049894>] (irq_domain_add_simple+0x98/0xc0)
 r8:c0411bbc r7:c185cb00 r6:00000050 r5:00000010 r4:00000001
[<c00497fc>] (irq_domain_add_simple) from [<c01b3328>] (_gpiochip_irqchip_add+0x64/0x10c)
 r7:c1862c64 r6:c0419280 r5:c1862c64 r4:c1854b50
[<c01b32c4>] (_gpiochip_irqchip_add) from [<c01b79f4>] (omap_gpio_probe+0x2fc/0x63c)
 r5:c1854b50 r4:c1862c10
[<c01b76f8>] (omap_gpio_probe) from [<c01fcf58>] (platform_drv_probe+0x2c/0x64)
 r10:00000000 r9:c03e45e8 r8:00000000 r7:c0419294 r6:c0411984 r5:c0419294
 r4:c0411950
[<c01fcf2c>] (platform_drv_probe) from [<c01fb668>] (really_probe+0x160/0x29c)

Hence, fix it by remove obsolete callbacks assignment. After this
change 	omap_gpio_mask_irq()/omap_gpio_unmask_irq() will be used
for MPUIO IRQs masking, but this now happens anyway from
omap_gpio_irq_startup/shutdown().

Cc: Tony Lindgren <tony@atomide.com>
Fixes: commit d2d05c65c4 ("gpio: omap: Fix regression for MPUIO interrupts")
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-30 13:50:21 +01:00
Mark Brown
a057d737d6 Merge remote-tracking branches 'spi/fix/bcm63xx', 'spi/fix/doc', 'spi/fix/mediatek' and 'spi/fix/pl022' into spi-linus 2015-11-30 12:26:47 +00:00
Mark Brown
9f28b3c6ae Merge remote-tracking branch 'spi/fix/core' into spi-linus 2015-11-30 12:26:46 +00:00
Eric Dumazet
9ffad80a9c drivers: net: xgene: fix possible use after free
Once TX has been enabled on a NIC, it is illegal to access skb,
as this skb might have been freed by another cpu, from TX completion
handler.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: Iyappan Subramanian <isubramanian@apm.com>
Acked-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-29 22:51:45 -05:00
Martin Blumenstingl
880621c260 packet: Allow packets with only a header (but no payload)
Commit 9c7077622d ("packet: make packet_snd fail on len smaller
than l2 header") added validation for the packet size in packet_snd.
This change enforces that every packet needs a header (with at least
hard_header_len bytes) plus a payload with at least one byte. Before
this change the payload was optional.

This fixes PPPoE connections which do not have a "Service" or
"Host-Uniq" configured (which is violating the spec, but is still
widely used in real-world setups). Those are currently failing with the
following message: "pppd: packet size is too short (24 <= 24)"

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-29 22:17:17 -05:00
Linus Torvalds
31ade3b83e Linux 4.4-rc3 2015-11-29 18:58:26 -08:00
Linus Torvalds
c5bc1c9305 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull nouveau and radeon fixes from Dave Airlie:
 "Just some nouveau and radeon/amdgpu fixes.

  The nouveau fixes look large as the firmware context files are
  regenerated, but the actual change is quite small"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: make some dpm errors debug only
  drm/nouveau/volt/pwm/gk104: fix an off-by-one resulting in the voltage not being set
  drm/nouveau/nvif: allow userspace access to its own client object
  drm/nouveau/gr/gf100-: fix oops when calling zbc methods
  drm/nouveau/gr/gf117-: assume no PPC if NV_PGRAPH_GPC_GPM_PD_PES_TPC_ID_MASK is zero
  drm/nouveau/gr/gf117-: read NV_PGRAPH_GPC_GPM_PD_PES_TPC_ID_MASK from correct GPC
  drm/nouveau/gr/gf100-: split out per-gpc address calculation macro
  drm/nouveau/bios: return actual size of the buffer retrieved via _ROM
  drm/nouveau/instmem: protect instobj list with a spinlock
  drm/nouveau/pci: enable c800 magic for some unknown Samsung laptop
  drm/nouveau/pci: enable c800 magic for Clevo P157SM
  drm/radeon: make rv770_set_sw_state failures non-fatal
  drm/amdgpu: move dependency handling out of atomic section v2
  drm/amdgpu: optimize scheduler fence handling
  drm/amdgpu: remove vm->mutex
  drm/amdgpu: add mutex for ba_va->valids/invalids
  drm/amdgpu: adapt vce session create interface changes
  drm/amdgpu: vce use multiple cache surface starting from stoney
  drm/amdgpu: reset vce trap interrupt flag
2015-11-29 17:38:08 -08:00
Linus Torvalds
818aba30b3 RTC fixes for 4.4
Two fixes for the ds1307 alarm and wakeup.
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Merge tag 'rtc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC fixes from Alexandre Belloni:
 "Two fixes for the ds1307 alarm and wakeup"

* tag 'rtc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: ds1307: fix alarm reading at probe time
  rtc: ds1307: fix kernel splat due to wakeup irq handling
2015-11-29 17:30:41 -08:00
Linus Torvalds
00fd6a7194 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fix from Ralf Baechle:
 "Just a fix for empty loops that may be removed by non-antique GCC"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Fix delay loops which may be removed by GCC.
2015-11-29 17:24:35 -08:00
Linus Torvalds
d72aee78e9 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k fixes from Geert Uytterhoeven:
 "Summary:

   - Add missing initialization of max_pfn, which is needed to make
     selftests/vm/mlock2-tests succeed,

   - Wire up new mlock2 syscall"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Wire up mlock2
  m68knommu: Add missing initialization of max_pfn and {min,max}_low_pfn
  m68k/mm: sun3 - Add missing initialization of max_pfn and {min,max}_low_pfn
  m68k/mm: m54xx - Add missing initialization of max_pfn
  m68k/mm: motorola - Add missing initialization of max_pfn
2015-11-29 17:18:41 -08:00
Linus Torvalds
04527fdafe Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "Just two changes this time around:

   - wire up the new mlock2 syscall added during the last merge window

   - fix a build problem with certain configurations provoked by making
     CONFIG_OF user selectable"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8454/1: OF implies OF_FLATTREE
  ARM: wire up mlock2 syscall
2015-11-29 17:13:07 -08:00
Hannes Reinecke
bf4e6b4e75 block: Always check queue limits for cloned requests
When a cloned request is retried on other queues it always needs
to be checked against the queue limits of that queue.
Otherwise the calculations for nr_phys_segments might be wrong,
leading to a crash in scsi_init_sgtable().

To clarify this the patch renames blk_rq_check_limits()
to blk_cloned_rq_check_limits() and removes the symbol
export, as the new function should only be used for
cloned requests and never exported.

Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Ewan Milne <emilne@redhat.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Fixes: e2a60da74 ("block: Clean up special command handling logic")
Cc: stable@vger.kernel.org # 3.7+
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:37:27 -07:00
Wenwei Tao
d0a712ceb8 lightnvm: missing nvm_lock acquire
To avoid race conditions, traverse dev, media manager,
and target lists and also register, unregister entries
to/from them, should be always under the nvm_lock control.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:58 -07:00
Matias Bjørling
08236c6bb2 lightnvm: unconverted ppa returned in get_bb_tbl
The get_bb_tbl function takes ppa as a generic address, which is
converted to the ppa device address within the device driver. When
the update_bbtbl callback is called from get_bb_tbl, the device
specific ppa is used, instead of the generic ppa.

Make sure to pass the generic ppa.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:58 -07:00
Matias Bjørling
09f2e71609 lightnvm: refactor and change vendor id for qemu
The QEMU NVMe implementation uses Intel vendor, Intel device id, and the
first vendor specific byte to identify a LightNVM compatible nvme
instance.

Instead of using the Intel specific, use a preallocated from CNEX Labs
instead. This lets us uniquely identify a QEMU lightnvm device without
breaking other vendor specific work in the qemu device driver.

Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:58 -07:00
Wenwei Tao
d160147b5c lightnvm: do device max sectors boundary check first
do device max_phys_sect boundary check first, otherwise
we will allocate dma_pools for devices whose max sectors
are beyond lightnvm support and register them.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:58 -07:00
Sudip Mukherjee
76e25081b6 lightnvm: fix ioctl memory leaks
If copy_to_user() fails we returned error but we missed releasing
devices.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:57 -07:00
Wenwei Tao
8261bd48c6 lightnvm: free memory when gennvm register fails
free allocated nvm block and gennvm lun structures when
gennvm register fails, otherwise it will cause memory leak.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:57 -07:00
Keith Busch
c4699e70d1 lightnvm: Simplify config when disabled
We shouldn't compile an object file to get empty implementations;
conforms to linux coding style on conditional compilation.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-29 14:34:57 -07:00
Vladimir Zapolskiy
d06165b329 gpiolib: fix oops, if gpio name is NULL
Commit c0017ed719 ("gpio: Introduce gpio descriptor 'name'") causes
OOPS on boot on LPC32xx boards:

    Unable to handle kernel NULL pointer dereference at virtual address 00000000
    CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0+ #707
    Hardware name: LPC32XX SoC (Flattened Device Tree)
    task: c381baa0 ti: c381e000 task.ti: c381e000
    PC is at strcmp+0x10/0x40
    LR is at gpiochip_add+0x3d0/0x4d4
    pc : [<>]    lr : [<>]    psr: a0000093
    sp : c381fd60  ip : c381fd70  fp : c381fd6c

    [snip]

    Backtrace:
    [<>] (strcmp) from [<>] (gpiochip_add+0x3d0/0x4d4)
    [<>] (gpiochip_add) from [<>] (lpc32xx_gpio_probe+0x44/0x60)
    [<>] (lpc32xx_gpio_probe) from [<>] (platform_drv_probe+0x40/0x8c)
    [<>] (platform_drv_probe) from [<>] (driver_probe_device+0x110/0x294)
    [<>] (driver_probe_device) from [<>] (__driver_attach+0x70/0x94)
    [<>] (__driver_attach) from [<>] (bus_for_each_dev+0x74/0x98)
    [<>] (bus_for_each_dev) from [<>] (driver_attach+0x20/0x28)
    [<>] (driver_attach) from [<>] (bus_add_driver+0xd4/0x1f0)
    [<>] (bus_add_driver) from [<>] (driver_register+0xa4/0xe8)
    [<>] (driver_register) from [<>] (__platform_driver_register+0x38/0x4c)
    [<>] (__platform_driver_register) from [<>] (lpc32xx_gpio_driver_init+0x18/0x20)
    [<>] (lpc32xx_gpio_driver_init) from [<>] (do_one_initcall+0x108/0x1c8)
    [<>] (do_one_initcall) from [<>] (kernel_init_freeable+0x10c/0x1d4)
    [<>] (kernel_init_freeable) from [<>] (kernel_init+0x10/0xec)
    [<>] (kernel_init) from [<>] (ret_from_fork+0x14/0x24)

This is caused by the fact that at the moment some GPIO names are set
to NULL, there is a hole in linear representation of one GPI bank, see
drivers/gpio/gpio-lpc32xx.c / gpi_p3_names[] for details.

The same problem most probably affects also gpio-cs5535.c, see
cs5535_gpio_names[].

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-29 22:17:40 +01:00
Linus Torvalds
36511e8607 Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 - fix tcm-user backend driver expired cmd time processing (agrover)
 - eliminate kref_put_spinlock_irqsave() for I/O completion (bart)
 - fix iscsi login kthread failure case hung task regression (nab)
 - fix COMPARE_AND_WRITE completion use-after-free race (nab)
 - fix COMPARE_AND_WRITE with SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC non zero
   SGL offset data corruption.  (Jan + Doug)
 - fix >= v4.4-rc1 regression for tcm_qla2xxx enable configfs attribute
   (Himanshu + HCH)

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target/stat: print full t10_wwn.model buffer
  target: fix COMPARE_AND_WRITE non zero SGL offset data corruption
  qla2xxx: Fix regression introduced by target configFS changes
  kref: Remove kref_put_spinlock_irqsave()
  target: Invoke release_cmd() callback without holding a spinlock
  target: Fix race for SCF_COMPARE_AND_WRITE_POST checking
  iscsi-target: Fix rx_login_comp hang after login failure
  iscsi-target: return -ENOMEM instead of -1 in case of failed kmalloc()
  target/user: Do not set unused fields in tcmu_ops
  target/user: Fix time calc in expired cmd processing
2015-11-29 09:03:57 -08:00
Linus Torvalds
75a29ec1e8 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management fixes from Zhang Rui:
 "Specifics:

 - several fixes and cleanups on Rockchip thermal drivers.

 - add the missing support of RK3368 SoCs in Rockchip driver.

 - small fixes on of-thermal, power_allocator, rcar driver, IMX, and
   QCOM drivers, and also compilation fixes, on thermal.h, when thermal
   is not selected"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  imx: thermal: use CPU temperature grade info for thresholds
  thermal: fix thermal_zone_bind_cooling_device prototype
  Revert "thermal: qcom_spmi: allow compile test"
  thermal: rcar_thermal: remove redundant operation
  thermal: of-thermal: Reduce log level for message when can't fine thermal zone
  thermal: power_allocator: Use temperature reading from tz
  thermal: rockchip: Support the RK3368 SoCs in thermal driver
  thermal: rockchip: consistently use int for temperatures
  thermal: rockchip: Add the sort mode for adc value increment or decrement
  thermal: rockchip: improve the conversion function
  thermal: rockchip: trivial: fix typo in commit
  thermal: rockchip: better to compatible the driver for different SoCs
  dt-bindings: rockchip-thermal: Support the RK3368 SoCs compatible
2015-11-29 08:58:48 -08:00
David Disseldorp
8f90353950 target/stat: print full t10_wwn.model buffer
Cut 'n paste error saw it only process sizeof(t10_wwn.vendor) characters.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 21:23:13 -08:00
Jan Engelhardt
d94e5a6135 target: fix COMPARE_AND_WRITE non zero SGL offset data corruption
target_core_sbc's compare_and_write functionality suffers from taking
data at the wrong memory location when writing a CAW request to disk
when a SGL offset is non-zero.

This can happen with loopback and vhost-scsi fabric drivers when
SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC is used to map existing user-space
SGL memory into COMPARE_AND_WRITE READ/WRITE payload buffers.

Given the following sample LIO subtopology,

% targetcli ls /loopback/
o- loopback ................................. [1 Target]
  o- naa.6001405ebb8df14a ....... [naa.60014059143ed2b3]
    o- luns ................................... [2 LUNs]
      o- lun0 ................ [iblock/ram0 (/dev/ram0)]
      o- lun1 ................ [iblock/ram1 (/dev/ram1)]
% lsscsi -g
[3:0:1:0]    disk    LIO-ORG  IBLOCK           4.0   /dev/sdc   /dev/sg3
[3:0:1:1]    disk    LIO-ORG  IBLOCK           4.0   /dev/sdd   /dev/sg4

the following bug can be observed in Linux 4.3 and 4.4~rc1:

% perl -e 'print chr$_ for 0..255,reverse 0..255' >rand
% perl -e 'print "\0" x 512' >zero
% cat rand >/dev/sdd
% sg_compare_and_write -i rand -D zero --lba 0 /dev/sdd
% sg_compare_and_write -i zero -D rand --lba 0 /dev/sdd
Miscompare reported
% hexdump -Cn 512 /dev/sdd
00000000  0f 0e 0d 0c 0b 0a 09 08  07 06 05 04 03 02 01 00
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
*
00000200

Rather than writing all-zeroes as instructed with the -D file, it
corrupts the data in the sector by splicing some of the original
bytes in. The page of the first entry of cmd->t_data_sg includes the
CDB, and sg->offset is set to a position past the CDB. I presume that
sg->offset is also the right choice to use for subsequent sglist
members.

Signed-off-by: Jan Engelhardt <jengelh@netitwork.de>
Tested-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: <stable@vger.kernel.org> # v3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 21:22:56 -08:00
Himanshu Madhani
3786dc454f qla2xxx: Fix regression introduced by target configFS changes
this patch fixes following regression

 # targetcli
 [Errno 13] Permission denied: '/sys/kernel/config/target/qla2xxx/21:00:00:0e:1e:08:c7:20/tpgt_1/enable'

Fixes: 2eafd72939 ("target: use per-attribute show and store methods")
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:52:10 -08:00
Bart Van Assche
3a66d7dca1 kref: Remove kref_put_spinlock_irqsave()
The last user is gone. Hence remove this function.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:33:29 -08:00
Bart Van Assche
9ff9d15edd target: Invoke release_cmd() callback without holding a spinlock
This patch fixes the following kernel warning because it avoids that
IRQs are disabled while ft_release_cmd() is invoked (fc_seq_set_resp()
invokes spin_unlock_bh()):

WARNING: CPU: 3 PID: 117 at kernel/softirq.c:150 __local_bh_enable_ip+0xaa/0x110()
Call Trace:
 [<ffffffff814f71eb>] dump_stack+0x4f/0x7b
 [<ffffffff8105e56a>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff8105e65a>] warn_slowpath_null+0x1a/0x20
 [<ffffffff81062b2a>] __local_bh_enable_ip+0xaa/0x110
 [<ffffffff814ff229>] _raw_spin_unlock_bh+0x39/0x40
 [<ffffffffa03a7f94>] fc_seq_set_resp+0xe4/0x100 [libfc]
 [<ffffffffa02e604a>] ft_free_cmd+0x4a/0x90 [tcm_fc]
 [<ffffffffa02e6972>] ft_release_cmd+0x12/0x20 [tcm_fc]
 [<ffffffffa042bd66>] target_release_cmd_kref+0x56/0x90 [target_core_mod]
 [<ffffffffa042caf0>] target_put_sess_cmd+0xc0/0x110 [target_core_mod]
 [<ffffffffa042cb81>] transport_release_cmd+0x41/0x70 [target_core_mod]
 [<ffffffffa042d975>] transport_generic_free_cmd+0x35/0x420 [target_core_mod]

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Joern Engel <joern@logfs.org>
Reviewed-by: Andy Grover <agrover@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:33:23 -08:00
Nicholas Bellinger
057085e522 target: Fix race for SCF_COMPARE_AND_WRITE_POST checking
This patch addresses a race + use after free where the first
stage of COMPARE_AND_WRITE in compare_and_write_callback()
is rescheduled after the backend sends the secondary WRITE,
resulting in second stage compare_and_write_post() callback
completing in target_complete_ok_work() before the first
can return.

Because current code depends on checking se_cmd->se_cmd_flags
after return from se_cmd->transport_complete_callback(),
this results in first stage having SCF_COMPARE_AND_WRITE_POST
set, which incorrectly falls through into second stage CAW
processing code, eventually triggering a NULL pointer
dereference due to use after free.

To address this bug, pass in a new *post_ret parameter into
se_cmd->transport_complete_callback(), and depend upon this
value instead of ->se_cmd_flags to determine when to return
or fall through into ->queue_status() code for CAW.

Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:33:15 -08:00
Nicholas Bellinger
ca82c2bded iscsi-target: Fix rx_login_comp hang after login failure
This patch addresses a case where iscsi_target_do_tx_login_io()
fails sending the last login response PDU, after the RX/TX
threads have already been started.

The case centers around iscsi_target_rx_thread() not invoking
allow_signal(SIGINT) before the send_sig(SIGINT, ...) occurs
from the failure path, resulting in RX thread hanging
indefinately on iscsi_conn->rx_login_comp.

Note this bug is a regression introduced by:

  commit e54198657b
  Author: Nicholas Bellinger <nab@linux-iscsi.org>
  Date:   Wed Jul 22 23:14:19 2015 -0700

      iscsi-target: Fix iscsit_start_kthreads failure OOPs

To address this bug, complete ->rx_login_complete for good
measure in the failure path, and immediately return from
RX thread context if connection state did not actually reach
full feature phase (TARG_CONN_STATE_LOGGED_IN).

Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:33:08 -08:00
Luis de Bethencourt
82a819e8fb iscsi-target: return -ENOMEM instead of -1 in case of failed kmalloc()
Smatch complains about returning hard coded error codes, silence this
warning.

drivers/target/iscsi/iscsi_target_parameters.c:211
   iscsi_create_default_params() warn: returning -1 instead of -ENOMEM is sloppy

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:32:59 -08:00
Andy Grover
6ba4bd297d target/user: Do not set unused fields in tcmu_ops
TCMU sets TRANSPORT_FLAG_PASSTHROUGH, so INQUIRY commands will not be
emulated by LIO but passed up to userspace. Therefore TCMU should not
set these, just like pscsi doesn't.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:32:52 -08:00
Andy Grover
611e2267b6 target/user: Fix time calc in expired cmd processing
Reversed arguments meant that we were doing nothing for cmds whose deadline
had passed.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-11-28 19:32:33 -08:00
Arnd Bergmann
aa7d5f18e5 ARM: 8454/1: OF implies OF_FLATTREE
On the ARM architecture, individual platforms select CONFIG_USE_OF if they
need it, but all device tree code is keyed off CONFIG_OF. When building
a platform without DT support and manually enabling CONFIG_OF, we now
get a number of build errors, e.g.

arch/arm/kernel/devtree.c: In function 'setup_machine_fdt':
arch/arm/kernel/devtree.c:215:19: error: implicit declaration of function 'early_init_dt_verify' [-Werror=implicit-function-declaration]

We could now try to separate the use case of booting from DT vs. the
case of using the dynamic implementation, but that seems more complicated
than it can gain us.

This simply changes the ARM Kconfig file to always enable OF_RESERVED_MEM
and OF_EARLY_FLATTREE when CONFIG_OF is enabled. These options add a little
extra code when we just want the dynamic OF implementation, but that seems
like a rather obscure case, and this version solves all CONFIG_OF related
randconfig regressions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 0166dc11be ("of: make CONFIG_OF user selectable")
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-11-28 23:26:12 +00:00
Linus Torvalds
081f3698e6 PCI updates for v4.4:
NUMA
     Prevent out of bounds access in numa_node override (Mathias Krause)
 
   HiSilicon host bridge driver
     Fix deferred probing (Arnd Bergmann)
 
   Synopsys DesignWare host bridge driver
     Remove incorrect io_base assignment (Stanimir Varbanov)
     Move align_resource function pointer to pci_host_bridge structure (Gabriele Paoloni)
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Merge tag 'pci-v4.4-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Here are a few fixes I'd like to have in v4.4: a generic one for sysfs
  and three for HiSilicon and DesignWare host controllers.

  Summary:

  NUMA:
   - Prevent out of bounds access in numa_node override (Mathias Krause)

  HiSilicon host bridge driver:
   - Fix deferred probing (Arnd Bergmann)

  Synopsys DesignWare host bridge driver:
   - Remove incorrect io_base assignment (Stanimir Varbanov)
   - Move align_resource function pointer to pci_host_bridge structure
     (Gabriele Paoloni)"

* tag 'pci-v4.4-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  ARM/PCI: Move align_resource function pointer to pci_host_bridge structure
  PCI: hisi: Fix deferred probing
  PCI: designware: Remove incorrect io_base assignment
  PCI: Prevent out of bounds access in numa_node override
2015-11-28 13:07:41 -08:00
Linus Torvalds
8003a57356 NFS client bugfixes for Linux 4.4
Highlights include:
 
 Stable patches:
 - Fix a NFSv4 callback identifier leak that was also causing client crashes
 - Fix NFSv4 callback decoding issues when incoming requests are truncated
 - Don't declare the attribute cache valid when we call nfs_update_inode with
   an empty attribute structure.
 - Resend LAYOUTGET when there is a race that changes the seqid
 
 Bugfixes:
 - Fix a number of issues with the NFSv4.2 CLONE ioctl()
 - Properly set NFS v4.2 NFSDBG_FACILITY
 - NFSv4 referrals are broken; Cleanup FATTR4_WORD0_FS_LOCATIONS after
   decoding success
 - Use sliding delay when LAYOUTGET gets NFS4ERR_DELAY
 - Ensure that attrcache is revalidated after a SETATTR
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Merge tag 'nfs-for-4.4-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

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

  Stable patches:
   - Fix a NFSv4 callback identifier leak that was also causing client
     crashes
   - Fix NFSv4 callback decoding issues when incoming requests are
     truncated
   - Don't declare the attribute cache valid when we call
     nfs_update_inode with an empty attribute structure.
   - Resend LAYOUTGET when there is a race that changes the seqid

  Bugfixes:
   - Fix a number of issues with the NFSv4.2 CLONE ioctl()
   - Properly set NFS v4.2 NFSDBG_FACILITY
   - NFSv4 referrals are broken; Cleanup FATTR4_WORD0_FS_LOCATIONS after
     decoding success
   - Use sliding delay when LAYOUTGET gets NFS4ERR_DELAY
   - Ensure that attrcache is revalidated after a SETATTR"

* tag 'nfs-for-4.4-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs4: resend LAYOUTGET when there is a race that changes the seqid
  nfs: if we have no valid attrs, then don't declare the attribute cache valid
  nfs: ensure that attrcache is revalidated after a SETATTR
  nfs4: limit callback decoding to received bytes
  nfs4: start callback_ident at idr 1
  nfs: use sliding delay when LAYOUTGET gets NFS4ERR_DELAY
  NFS4: Cleanup FATTR4_WORD0_FS_LOCATIONS after decoding success
  NFS: Properly set NFS v4.2 NFSDBG_FACILITY
  nfs: reduce the amount of ifdefs for v4.2 in nfs4file.c
  nfs: use btrfs ioctl defintions for clone
  nfs: allow intra-file CLONE
  nfs: offer native ioctls even if CONFIG_COMPAT is set
  nfs: pass on count for CLONE operations
2015-11-27 17:22:47 -08:00
Linus Torvalds
d0bc387dbe Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog fixes from Wim Van Sebroeck:
 - a null pointer dereference fix for omap_wdt
 - some clock related fixes for pnx4008
 - an underflow fix in wdt_set_timeout() for w83977f_wdt
 - restart fix for tegra wdt
 - Kconfig change to support Freescale Layerscape platforms
 - fix for stopping the mtk_wdt watchdog

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: mtk_wdt: Use MODE_KEY when stopping the watchdog
  watchdog: Add support for Freescale Layerscape platforms
  watchdog: tegra: Stop watchdog first if restarting
  watchdog: w83977f_wdt: underflow in wdt_set_timeout()
  watchdog: pnx4008: make global wdt_clk static
  watchdog: pnx4008: fix warnings caused by enabling unprepared clock
  watchdog: omap_wdt: fix null pointer dereference
2015-11-27 15:53:23 -08:00