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Use ERSPAN key header field as tunnel key in gre_parse_header routine
since ERSPAN protocol sets the key field of the external GRE header to
0 resulting in a tunnel lookup fail in ip6gre_err.
In addition remove key field parsing and pskb_may_pull check in
erspan_rcv and ip6erspan_rcv
Fixes: 5a963eb61b7c ("ip6_gre: Add ERSPAN native tunnel support")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The recent addition of SPDX license identifiers to the files in
drivers/net/ethernet/sun created a licensing conflict.
The cassini driver files contain a proper license notice:
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
but the SPDX change added:
SPDX-License-Identifier: GPL-2.0
So the file got tagged GPL v2 only while in fact it is licensed under GPL
v2 or later.
It's nice that people care about the SPDX tags, but they need to be more
careful about it. Not everything under (the) sun belongs to ...
Fix up the SPDX identifier and remove the boiler plate text as it is
redundant.
Fixes: c861ef83d771 ("sun: Add SPDX license tags to Sun network drivers")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Shannon Nelson <shannon.nelson@oracle.com>
Cc: Zhu Yanjun <yanjun.zhu@oracle.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org
Acked-by: Shannon Nelson <shannon.lee.nelson@gmail.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Provides useful context about bio splits in blktrace.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Otherwise targets that don't support/expect IO splitting could resubmit
bios using code paths with unnecessary IO splitting complexity.
Depends-on: 24113d487843 ("dm: avoid indirect call in __dm_make_request")
Fixes: 978e51ba38e00 ("dm: optimize bio-based NVMe IO submission")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- descriptor parsing regression fix for devices that have more than 16
collections, from Peter Hutterer (and followup cleanup from Philipp
Zabel)
- quirk for Goodix touchpad
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: core: simplify active collection tracking
HID: i2c-hid: Disable runtime PM on Goodix touchpad
HID: core: replace the collection tree pointers with indices
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The recently added nvlink2 VFIO driver introduced a license conflict in two
files. In both cases the SPDX license identifier is:
SPDX-License-Identifier: GPL-2.0+
but the files contain also the following license boiler plate text:
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation
The latter is GPL-2.9-only and not GPL-2.0=.
Looking deeper. The nvlink source file is derived from vfio_pci_igd.c which
is also licensed under GPL-2.0-only and it can be assumed that the file was
copied and modified. As the original file is licensed GPL-2.0-only it's not
possible to relicense derivative work to GPL-2.0-or-later.
Fix the SPDX identifier and remove the boiler plate as it is redundant.
Fixes: 7f92891778df ("vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: kvm@vger.kernel.org
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Except for blk_queue_split(), bio_split() is used for splitting bio too,
then the remained bio is often resubmit to queue via generic_make_request().
So the same queue enter recursion exits in this case too. Unfortunatley
commit cd4a4ae4683dc2 doesn't help this case.
This patch covers the above case by setting BIO_QUEUE_ENTERED before calling
q->make_request_fn.
In theory the per-bio flag is used to simulate one stack variable, it is
just fine to clear it after q->make_request_fn is returned. Especially
the same bio can't be submitted from another context.
Fixes: cd4a4ae4683dc2 ("block: don't use blocking queue entered for recursive bio submits")
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: NeilBrown <neilb@suse.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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After commit
5d32a66541c4 ("PCI/ACPI: Allow ACPI to be built without CONFIG_PCI set")
dependencies on CONFIG_PCI that previously were satisfied implicitly
through dependencies on CONFIG_ACPI have to be specified directly.
PCI_LOCKLESS_CONFIG depends on PCI but this dependency has not been
mentioned in the Kconfig so add an explicit dependency here and fix
WARNING: unmet direct dependencies detected for PCI_LOCKLESS_CONFIG
Depends on [n]: PCI [=n]
Selected by [y]:
- X86 [=y]
Fixes: 5d32a66541c46 ("PCI/ACPI: Allow ACPI to be built without CONFIG_PCI set")
Signed-off-by: Sinan Kaya <okaya@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-acpi@vger.kernel.org
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190121231958.28255-2-okaya@kernel.org
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On a DIO_SKIP_HOLES filesystem, the ->get_block() method is currently
not allowed to create blocks for an empty inode. This confusion comes
from trying to bit shift a negative number, so check the size of the
inode first.
The problem is most visible for hfsplus, because the fallback to
buffered I/O doesn't happen and the write fails with EIO. This is in
part the fault of the module, because it gives a wrong return value on
->get_block(); that will be fixed in a separate patch.
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Add device nodes for VIN4, VIN5 and CSI40 to RZ/G2E (a.k.a. R8A774C0)
SoC specific device tree.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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This patch adds PCI express channel 0 device tree node to the
RZ/G2E (a.k.a. R8A774C0) SoC dtsi.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Hook up the RZ/G2E Audio-DMAC device to IPMMU-MP as stated by the
RZ/G2 User's manual.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Hook up the RZ/G2E AVB device to IPMMU-DS0 as stated by the
RZ/G2 User's manual.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Hook up SYS-DMAC0, SYS-DMAC1, and SYS-DMAC2 to IPMMU-DS0 and
IPMMU-DS1, according to what reported by the RZ/G2 User's manual.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add usb3.0 host and function device nodes to the RZ/G2E SoC dtsi.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add usb dmac and hsusb device nodes on RZ/G2E SoC dtsi.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add USB2.0 phy and host (EHCI/OHCI) device tree nodes to the RZ/G2E
SoC dtsi.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The RZ/G2E (a.k.a. R8A774C0) has one RGB output and two LVDS
outputs connected to DU.
This patch add support for DU, LVDS encoders, VSP and FCP.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add PWM support to the RZ/G2E (a.k.a. R8A774C0) SoC specific
device tree.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add sound support for the RZ/G2E SoC (a.k.a. R8A774C0).
This work is based on similar work done on the R8A77990 SoC
by Yoshihiro Kaneko <ykaneko0929@gmail.com>.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add the device nodes for all MSIOF SPI controllers on RZ/G2E SoC.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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This patch adds the thermal device node and the thermal-zones
node to the SoC specific dtsi for the RZ/G2E.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add the device nodes for both RZ/G2E CAN channels.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add r8a774c0 IPMMU nodes.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add the I2C[0-7] and IIC Bus Interface for DVFS (IIC for DVFS)
devices nodes to the r8a774c0 device tree.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add SDHI nodes to the DT of the r8a774c0 SoC.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add a device node for the second Cortex-A53 CPU core on the Renesas
RZ/G2E (a.k.a r8a774c0) SoC, and adjust the interrupt delivery masks
for the ARM Generic Interrupt Controller and Architectured Timer.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add watchdog support to the RZ/G2E (a.k.a. R8A774C0) SoC
specific device tree.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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This patch adds the SoC specific part of the Ethernet AVB
device tree node.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add GPIO device nodes to the DT of the r8a774c0 SoC.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add PFC support to the RZ/G2E (a.k.a. r8a774c0) SoC specific
device tree.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add support for the Interrupt Controller for External Devices
(INTC-EX) on RZ/G2E.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add the device nodes for all RZ/G2E SCIF and HSCIF serial ports,
including clocks, power domains and DMAs.
According to the HW user manual, SCIF[015] and HSCIF[012] are
connected to both SYS-DMAC1 and SYS-DMAC2, while SCIF[34] and
HSCIF[34] are connected to SYS-DMAC0.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Add sys-dmac[012] device nodes for the RZ/G2E SoC (a.k.a. r8a774c0).
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Basic support for the RZ/G2E SoC (a.k.a. r8a774c0).
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of
August 24, 2018, the TX clock internal delay mode doesn't support
on R-Car E3. This patch fixes EthernetAVB phy mode to rgmii.
This is achieved by simply dropping the phy-mode property from
r8a77990-ebisu.dts as the default property for this for r8a77990,
as set in r8a77990.dtsi, is "rgmii".
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
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Vexpress motherboard MMCI requires dedicated interrupts for CMD and PIO,
which obviously should be expressed as a list. Current form uses tuple
and it works fine since interrupt-cells equal to 1.
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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Fix a cut'n'paste typo.
Checking 'master->sysclk' is expected here.
Fixes: 603f2bee2c54 ("i3c: master: Add driver for Cadence IP")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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MPS2 UART requires dedicated interrupts for RX, TX and overflow, which
obviously should be expressed as a list. Current form uses tuple and
it has worked so far because NVIC has interrupt-cells equal to 1.
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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In a previous commit we switched from a d_alloc_name() + d_lookup()
combination to setup a new dentry and find potential duplicates to the more
idiomatic lookup_one_len(). As far as I understand, this also means we need
to switch from d_add() to d_instantiate() since lookup_one_len() will
create a new dentry when it doesn't find an existing one and add the new
dentry to the hash queues. So we only need to call d_instantiate() to
connect the dentry to the inode and turn it into a positive dentry.
If we were to use d_add() we sure see stack traces like the following
indicating that adding the same dentry twice over the same inode:
[ 744.441889] CPU: 4 PID: 2849 Comm: landscape-sysin Not tainted 5.0.0-rc1-brauner-binderfs #243
[ 744.441889] Hardware name: Dell DCS XS24-SC2 /XS24-SC2 , BIOS S59_3C20 04/07/2011
[ 744.441889] RIP: 0010:__d_lookup_rcu+0x76/0x190
[ 744.441889] Code: 89 75 c0 49 c1 e9 20 49 89 fd 45 89 ce 41 83 e6 07 42 8d 04 f5 00 00 00 00 89 45 c8 eb 0c 48 8b 1b 48 85 db 0f 84 81 00 00 00 <44> 8b 63 fc 4c 3b 6b 10 75 ea 48 83 7b 08 00 74 e3 41 83 e4 fe 41
[ 744.441889] RSP: 0018:ffffb8c984e27ad0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 744.441889] RAX: 0000000000000038 RBX: ffff9407ef770c08 RCX: ffffb8c980011000
[ 744.441889] RDX: ffffb8c984e27b54 RSI: ffffb8c984e27ce0 RDI: ffff9407e6689600
[ 744.441889] RBP: ffffb8c984e27b28 R08: ffffb8c984e27ba4 R09: 0000000000000007
[ 744.441889] R10: ffff9407e5c4f05c R11: 973f3eb9d84a94e5 R12: 0000000000000002
[ 744.441889] R13: ffff9407e6689600 R14: 0000000000000007 R15: 00000007bfef7a13
[ 744.441889] FS: 00007f0db13bb740(0000) GS:ffff9407f3b00000(0000) knlGS:0000000000000000
[ 744.441889] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 744.441889] CR2: 00007f0dacc51024 CR3: 000000032961a000 CR4: 00000000000006e0
[ 744.441889] Call Trace:
[ 744.441889] lookup_fast+0x53/0x300
[ 744.441889] walk_component+0x49/0x350
[ 744.441889] ? inode_permission+0x63/0x1a0
[ 744.441889] link_path_walk.part.33+0x1bc/0x5a0
[ 744.441889] ? path_init+0x190/0x310
[ 744.441889] path_lookupat+0x95/0x210
[ 744.441889] filename_lookup+0xb6/0x190
[ 744.441889] ? __check_object_size+0xb8/0x1b0
[ 744.441889] ? strncpy_from_user+0x50/0x1a0
[ 744.441889] user_path_at_empty+0x36/0x40
[ 744.441889] ? user_path_at_empty+0x36/0x40
[ 744.441889] vfs_statx+0x76/0xe0
[ 744.441889] __do_sys_newstat+0x3d/0x70
[ 744.441889] __x64_sys_newstat+0x16/0x20
[ 744.441889] do_syscall_64+0x5a/0x120
[ 744.441889] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 744.441889] RIP: 0033:0x7f0db0ec2775
[ 744.441889] Code: 00 00 00 75 05 48 83 c4 18 c3 e8 26 55 02 00 66 0f 1f 44 00 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 04 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 e1 b6 2d 00 f7 d8 64 89
[ 744.441889] RSP: 002b:00007ffc36bc9388 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
[ 744.441889] RAX: ffffffffffffffda RBX: 00007ffc36bc9300 RCX: 00007f0db0ec2775
[ 744.441889] RDX: 00007ffc36bc9400 RSI: 00007ffc36bc9400 RDI: 00007f0dad26f050
[ 744.441889] RBP: 0000000000c0bc60 R08: 0000000000000000 R09: 0000000000000001
[ 744.441889] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc36bc9400
[ 744.441889] R13: 0000000000000001 R14: 00000000ffffff9c R15: 0000000000c0bc60
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The binderfs_binder_ctl_create() call is a no-op on subsequent calls and
the first call is done before we unlock the suberblock. Hence, there is no
need to take inode_lock() in there. Let's remove it.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Al pointed out that first calling kill_litter_super() before cleaning up
info is more correct since destroying info doesn't depend on the state of
the dentries and inodes. That the opposite remains true is not guaranteed.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- switch from d_alloc_name() + d_lookup() to lookup_one_len():
Instead of using d_alloc_name() and then doing a d_lookup() with the
allocated dentry to find whether a device with the name we're trying to
create already exists switch to using lookup_one_len(). The latter will
either return the existing dentry or a new one.
- switch from kmalloc() + strscpy() to kmemdup():
Use a more idiomatic way to copy the name for the new dentry that
userspace gave us.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Al pointed out that on binderfs_fill_super() error
deactivate_locked_super() will call binderfs_kill_super() so all of the
freeing and putting we currently do in binderfs_fill_super() is unnecessary
and buggy. Let's simply return errors and let binderfs_fill_super() take
care of cleaning up on error.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- make binderfs control dentry immutable:
We don't allow to unlink it since it is crucial for binderfs to be
useable but if we allow to rename it we make the unlink trivial to
bypass. So prevent renaming too and simply treat the control dentry as
immutable.
- add is_binderfs_control_device() helper:
Take the opportunity and turn the check for the control dentry into a
separate helper is_binderfs_control_device() since it's now used in two
places.
- simplify binderfs_rename():
Instead of hand-rolling our custom version of simple_rename() just dumb
the whole function down to first check whether we're trying to rename the
control dentry. If we do EPERM the caller and if not call simple_rename().
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The comment stems from an early version of that patchset and is just
confusing now.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We allow more then 255 binderfs binder devices to be created since there
are workloads that require more than that. If we use __u8 we'll overflow
after 255. So let's use a __u32.
Note that there's no released kernel with binderfs out there so this is
not a regression.
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When we switched over from binder_ctl.h to binderfs.h we forgot to change
the include guards. It's minor but it's obviously correct.
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Often userspace doesn't know when the kernel will be calling dma_buf_detach
on the buffer.
If userpace starts its CPU access at the same time as the sg list is being
freed it could end up accessing the sg list after it has been freed.
Thread A Thread B
- DMA_BUF_IOCTL_SYNC IOCT
- ion_dma_buf_begin_cpu_access
- list_for_each_entry
- ion_dma_buf_detatch
- free_duped_table
- dma_sync_sg_for_cpu
Fix this by getting the ion_buffer lock before freeing the sg table memory.
Fixes: 2a55e7b5e544 ("staging: android: ion: Call dma_map_sg for syncing and mapping")
Signed-off-by: Liam Mark <lmark@codeaurora.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit cbffaf7aa09e ("can: flexcan: Always use last mailbox for TX")
introduced a loop letting i run up to (including) ARRAY_SIZE(regs->mb)
and in the body accessed regs->mb[i] which is an out-of-bounds array
access that then resulted in an access to an reserved register area.
Later this was changed by commit 0517961ccdf1 ("can: flexcan: Add
provision for variable payload size") to iterate a bit differently but
still runs one iteration too much resulting to call
flexcan_get_mb(priv, priv->mb_count)
which results in a WARN_ON and then a NULL pointer exception. This
only affects devices compatible with "fsl,p1010-flexcan",
"fsl,imx53-flexcan", "fsl,imx35-flexcan", "fsl,imx25-flexcan",
"fsl,imx28-flexcan", so newer i.MX SoCs are not affected.
Fixes: cbffaf7aa09e ("can: flexcan: Always use last mailbox for TX")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: linux-stable <stable@vger.kernel.org> # >= 4.20
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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