This resolves the hazard between the mtc0 in the change_c0_status() and
the mfc0 in configure_exception_vector(). Without resolving this hazard
configure_exception_vector() could read an old value and would restore
this old value again. This would revert the changes change_c0_status()
did. I checked this by printing out the read_c0_status() at the end of
per_cpu_trap_init() and the ST0_MX is not set without this patch.
The hazard is documented in the MIPS Architecture Reference Manual Vol.
III: MIPS32/microMIPS32 Privileged Resource Architecture (MD00088), rev
6.03 table 8.1 which includes:
Producer | Consumer | Hazard
----------|----------|----------------------------
mtc0 | mfc0 | any coprocessor 0 register
I saw this hazard on an Atheros AR9344 rev 2 SoC with a MIPS 74Kc CPU.
There the change_c0_status() function would activate the DSPen by
setting ST0_MX in the c0_status register. This was reverted and then the
system got a DSP exception when the DSP registers were saved in
save_dsp() in the first process switch. The crash looks like this:
[ 0.089999] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.097796] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.107070] Kernel panic - not syncing: Unexpected DSP exception
[ 0.113470] Rebooting in 1 seconds..
We saw this problem in OpenWrt only on the MIPS 74Kc based Atheros SoCs,
not on the 24Kc based SoCs. We only saw it with kernel 5.4 not with
kernel 4.19, in addition we had to use GCC 8.4 or 9.X, with GCC 8.3 it
did not happen.
In the kernel I bisected this problem to commit 9012d01166 ("compiler:
allow all arches to enable CONFIG_OPTIMIZE_INLINING"), but when this was
reverted it also happened after commit 172dcd935c ("MIPS: Always
allocate exception vector for MIPSr2+").
Commit 0b24cae4d5 ("MIPS: Add missing EHB in mtc0 -> mfc0 sequence.")
does similar changes to a different file. I am not sure if there are
more places affected by this problem.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Running `make savedefconfig` creates by default `defconfig`, which is,
currently, on git’s radar, for example, `git status` lists this file as
untracked.
So, add the file to `.gitignore`, so it’s ignored by git.
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Taehee Yoo says:
====================
net: rmnet: fix interface leak for rmnet module
There are two problems in rmnet module that they occur the leak of
a lower interface.
The symptom is the same, which is the leak of a lower interface.
But there are two different real problems.
This patchset is to fix these real problems.
1. Do not allow to have different two modes.
As a lower interface of rmnet, there are two modes that they are VND
and BRIDGE.
One interface can have only one mode.
But in the current rmnet, there is no code to prevent to have
two modes in one lower interface.
So, interface leak occurs.
2. Do not allow to add multiple bridge interfaces.
rmnet can have only two bridge interface.
If an additional bridge interface is tried to be attached,
rmnet should deny it.
But there is no code to do that.
So, interface leak occurs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
rmnet can have only two bridge interface.
One of them is a link interface and another one is added by
the master operation.
rmnet interface shouldn't allow adding additional
bridge interfaces by mater operation.
But, there is no code to deny additional interfaces.
So, interface leak occurs.
Test commands:
ip link add dummy0 type dummy
ip link add dummy1 type dummy
ip link add dummy2 type dummy
ip link add rmnet0 link dummy0 type rmnet mux_id 1
ip link set dummy1 master rmnet0
ip link set dummy2 master rmnet0
ip link del rmnet0
In the above test command, the dummy0 was attached to rmnet as VND mode.
Then, dummy1 was attached to rmnet0 as BRIDGE mode.
At this point, dummy0 mode is switched from VND to BRIDGE automatically.
Then, dummy2 is attached to rmnet as BRIDGE mode.
At this point, rmnet0 should deny this operation.
But, rmnet0 doesn't deny this.
So that below splat occurs when the rmnet0 interface is deleted.
Splat looks like:
[ 186.684787][ C2] WARNING: CPU: 2 PID: 1009 at net/core/dev.c:8992 rollback_registered_many+0x986/0xcf0
[ 186.684788][ C2] Modules linked in: rmnet dummy openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_x
[ 186.684805][ C2] CPU: 2 PID: 1009 Comm: ip Not tainted 5.8.0-rc1+ #621
[ 186.684807][ C2] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 186.684808][ C2] RIP: 0010:rollback_registered_many+0x986/0xcf0
[ 186.684811][ C2] Code: 41 8b 4e cc 45 31 c0 31 d2 4c 89 ee 48 89 df e8 e0 47 ff ff 85 c0 0f 84 cd fc ff ff 5
[ 186.684812][ C2] RSP: 0018:ffff8880cd9472e0 EFLAGS: 00010287
[ 186.684815][ C2] RAX: ffff8880cc56da58 RBX: ffff8880ab21c000 RCX: ffffffff9329d323
[ 186.684816][ C2] RDX: 1ffffffff2be6410 RSI: 0000000000000008 RDI: ffffffff95f32080
[ 186.684818][ C2] RBP: dffffc0000000000 R08: fffffbfff2be6411 R09: fffffbfff2be6411
[ 186.684819][ C2] R10: ffffffff95f32087 R11: 0000000000000001 R12: ffff8880cd947480
[ 186.684820][ C2] R13: ffff8880ab21c0b8 R14: ffff8880cd947400 R15: ffff8880cdf10640
[ 186.684822][ C2] FS: 00007f00843890c0(0000) GS:ffff8880d4e00000(0000) knlGS:0000000000000000
[ 186.684823][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 186.684825][ C2] CR2: 000055b8ab1077b8 CR3: 00000000ab612006 CR4: 00000000000606e0
[ 186.684826][ C2] Call Trace:
[ 186.684827][ C2] ? lockdep_hardirqs_on_prepare+0x379/0x540
[ 186.684829][ C2] ? netif_set_real_num_tx_queues+0x780/0x780
[ 186.684830][ C2] ? rmnet_unregister_real_device+0x56/0x90 [rmnet]
[ 186.684831][ C2] ? __kasan_slab_free+0x126/0x150
[ 186.684832][ C2] ? kfree+0xdc/0x320
[ 186.684834][ C2] ? rmnet_unregister_real_device+0x56/0x90 [rmnet]
[ 186.684835][ C2] unregister_netdevice_many.part.135+0x13/0x1b0
[ 186.684836][ C2] rtnl_delete_link+0xbc/0x100
[ ... ]
[ 238.440071][ T1009] unregister_netdevice: waiting for rmnet0 to become free. Usage count = 1
Fixes: 037f9cdf72 ("net: rmnet: use upper/lower device infrastructure")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When sending mailbox in the work of aeq event, another aeq event
will be triggered. because the last aeq work is not exited and only
one work can be excuted simultaneously in the same workqueue, mailbox
sending function will return failure of timeout. We create and use
another workqueue to fix this.
Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Use kvfree() to release vmalloc()'ed areas in ipset, from Eric Dumazet.
2) UAF in nfnetlink_queue from the nf_conntrack_update() path.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap says:
====================
Documentation: networking: eliminate doubled words
Drop all duplicated words in Documentation/networking/ files.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "have".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: David Howells <dhowells@redhat.com>
Cc: linux-afs@lists.infradead.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "that".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "that".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "in".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled words "the" and "of".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: linux-can@vger.kernel.org
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "and".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-hams@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "to".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Equivalent information can be nowadays obtained using function tracer
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
There are some `static const u8` variables that are not used, this
triggers a warning building with `make W=1`, it is safe to remove them,
so do it and make the compiler more happy.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
The driver will be loaded by via a platform device. So we
will need to get the device_node from the parent device.
Depending on this we will set the driver data.
As all this is done later already, just delete the call to
of_device_get_match_data.
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
In function mtk_dsi_clk_hs_state, remove unnecessary conversion
to bool return, this change is to make the code a bit readable.
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
One fix for a regression in our pkey handling, which exhibits as PROT_EXEC
mappings taking continuous page faults.
Thanks to:
Jan Stancek, Aneesh Kumar K.V.
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Merge tag 'powerpc-5.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"One fix for a regression in our pkey handling, which exhibits as
PROT_EXEC mappings taking continuous page faults.
Thanks to: Jan Stancek, Aneesh Kumar K.V"
* tag 'powerpc-5.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm/pkeys: Make pkey access check work on execute_only_key
- Fix alternative patching for very large kernel images and modules
- Hook up existing CPU errata workarounds for Qualcomm Kryo CPUs
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Nothing earth-shattering, really - some CPU errata workarounds (one
day they'll get it right, ha!) and a fix for a boot failure with very
large kernel images where the alternative patching gets confused when
patching relative branches using veneers.
- Fix alternative patching for very large kernel images and modules
- Hook up existing CPU errata workarounds for Qualcomm Kryo CPUs"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Add KRYO4XX silver CPU cores to erratum list 1530923 and 1024718
arm64: Add KRYO4XX gold CPU cores to erratum list 1463225 and 1418040
arm64: Add MIDR value for KRYO4XX gold CPU cores
arm64/alternatives: use subsections for replacement sequences
When switching to TWA_SIGNAL for task_work notifications, we also made
any signal based condition in io_cqring_wait() return -ERESTARTSYS.
This breaks applications that rely on using signals to abort someone
waiting for events.
Check if we have a signal pending because of queued task_work, and
repeat the signal check once we've run the task_work. This provides a
reliable way of telling the two apart.
Additionally, only use TWA_SIGNAL if we are using an eventfd. If not,
we don't have the dependency situation described in the original commit,
and we can get by with just using TWA_RESUME like we previously did.
Fixes: ce593a6c48 ("io_uring: use signal based task_work running")
Cc: stable@vger.kernel.org # v5.7
Reported-by: Andres Freund <andres@anarazel.de>
Tested-by: Andres Freund <andres@anarazel.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Xen PV doesn't implement ESPFIX64, so they don't work right. Disable
them. Also print a warning the first time anyone tries to use a
16-bit segment on a Xen PV guest that would otherwise allow it
to help people diagnose this change in behavior.
This gets us closer to having all x86 selftests pass on Xen PV.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/92b2975459dfe5929ecf34c3896ad920bd9e3f2d.1593795633.git.luto@kernel.org
DEFINE_IDTENTRY_MCE and DEFINE_IDTENTRY_DEBUG were wired up as non-RAW
on x86_32, but the code expected them to be RAW.
Get rid of all the macro indirection for them on 32-bit and just use
DECLARE_IDTENTRY_RAW and DEFINE_IDTENTRY_RAW directly.
Also add a warning to make sure that we only hit the _kernel paths
in kernel mode.
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/9e90a7ee8e72fd757db6d92e1e5ff16339c1ecf9.1593795633.git.luto@kernel.org
On Xen PV, #DB doesn't use IST. It still needs to be correctly routed
depending on whether it came from user or kernel mode.
Get rid of DECLARE/DEFINE_IDTENTRY_XEN -- it was too hard to follow the
logic. Instead, route #DB and NMI through DECLARE/DEFINE_IDTENTRY_RAW on
Xen, and do the right thing for #DB. Also add more warnings to the
exc_debug* handlers to make this type of failure more obvious.
This fixes various forms of corruption that happen when usermode
triggers #DB on Xen PV.
Fixes: 4c0dcd8350 ("x86/entry: Implement user mode C entry points for #DB and #MCE")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/4163e733cce0b41658e252c6c6b3464f33fdff17.1593795633.git.luto@kernel.org
Move the clearing of the high bits of RAX after Xen PV joins the SYSENTER
path so that Xen PV doesn't skip it.
Arguably this code should be deleted instead, but that would belong in the
merge window.
Fixes: ffae641f57 ("x86/entry/64/compat: Fix Xen PV SYSENTER frame setup")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/9d33b3f3216dcab008070f1c28b6091ae7199969.1593795633.git.luto@kernel.org
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Merge tag 'for-linus-5.8b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"One small cleanup patch for ARM and two patches for the xenbus driver
fixing latent problems (large stack allocations and bad return code
settings)"
* tag 'for-linus-5.8b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/xenbus: let xenbus_map_ring_valloc() return errno values only
xen/xenbus: avoid large structs and arrays on the stack
arm/xen: remove the unused macro GRANT_TABLE_PHYSADDR
Linux maintains a coding-style and its own idiomatic set of terminology.
Update the style guidelines to recommend replacements for the terms
master/slave and blacklist/whitelist.
Link: http://lore.kernel.org/r/159389297140.2210796.13590142254668787525.stgit@dwillia2-desk3.amr.corp.intel.com
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: SeongJae Park <sjpark@amazon.de>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Laura Abbott <laura@labbott.name>
Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
I2C_SMBUS_BLOCK_MAX defines already the maximum number as defined in the
SMBus 2.0 specs. I don't see a reason to add 1 here. Also, fix the errno
to what is suggested for this error.
Fixes: c9bfdc7c16 ("i2c: mlxcpld: Add support for smbus block read transaction")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Michael Shych <michaelsh@mellanox.com>
Tested-by: Michael Shych <michaelsh@mellanox.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Pull sysctl fix from Al Viro:
"Another regression fix for sysctl changes this cycle..."
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Call sysctl_head_finish on error
I can't recall why there was none, but we surely want to have it.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Add more details which have either been missing ever since or describe
recent additions.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
The driver can't be loaded automatically because it misses
module alias to be provided. Add corresponding MODULE_DEVICE_TABLE()
call to the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Current AMD's zen-based APUs use this core for some of its i2c-buses.
With this patch we re-enable autodetection of hwmon-alike devices, so
lm-sensors will be able to work automatically.
It does not affect the boot-time of embedded devices, as the class is
set based on the DMI information.
DMI is probed only on Qtechnology QT5222 Industrial Camera Platform.
DocLink: https://qtec.com/camera-technology-camera-platforms/
Fixes: 3eddad96c4 ("i2c: designware: reverts "i2c: designware: Add support for AMD I2C controller"")
Signed-off-by: Ricardo Ribalda <ribalda@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
The PCA9665 datasheet says that I2CSTA = 78h indicates that SCL is stuck
low, this differs to the PCA9564 which uses 90h for this indication.
Treat either 0x78 or 0x90 as an indication that the SCL line is stuck.
Based on looking through the PCA9564 and PCA9665 datasheets this should
be safe for both chips. The PCA9564 should not return 0x78 for any valid
state and the PCA9665 should not return 0x90.
Fixes: eff9ec95ef ("i2c-algo-pca: Add PCA9665 support")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Merge tag '5.8-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Eight cifs/smb3 fixes, most when specifying the multiuser mount flag.
Five of the fixes are for stable"
* tag '5.8-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: prevent truncation from long to int in wait_for_free_credits
cifs: Fix the target file was deleted when rename failed.
SMB3: Honor 'posix' flag for multiuser mounts
SMB3: Honor 'handletimeout' flag for multiuser mounts
SMB3: Honor lease disabling for multiuser mounts
SMB3: Honor persistent/resilient handle flags for multiuser mounts
SMB3: Honor 'seal' flag for multiuser mounts
cifs: Display local UID details for SMB sessions in DebugData
Accumulated hwmon patches:
- Fix typo in Kconfig SENSORS_IR35221 option
- Fix potential memory leak in acpi_power_meter_add()
- Make sure the OVERT mask is set correctly in max6697 driver
- In PMBus core, fix page vs. register when accessing fans
- Mark is_visible functions static in bt1-pvt driver
- Define Temp- and Volt-to-N poly as maybe-unused in bt1-pvt driver
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Merge tag 'hwmon-for-v5.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Fix typo in Kconfig SENSORS_IR35221 option
- Fix potential memory leak in acpi_power_meter_add()
- Make sure the OVERT mask is set correctly in max6697 driver
- In PMBus core, fix page vs. register when accessing fans
- Mark is_visible functions static in bt1-pvt driver
- Define Temp- and Volt-to-N poly as maybe-unused in bt1-pvt driver
* tag 'hwmon-for-v5.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (pmbus) fix a typo in Kconfig SENSORS_IR35221 option
hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
hwmon: (max6697) Make sure the OVERT mask is set correctly
hwmon: (pmbus) Fix page vs. register when accessing fans
hwmon: (bt1-pvt) Mark is_visible functions static
hwmon: (bt1-pvt) Define Temp- and Volt-to-N poly as maybe-unused
Merge misc fixes from Andrew Morton:
"Subsystems affected by this patch series: mm/hugetlb, samples, mm/cma,
mm/vmalloc, mm/pagealloc"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm/page_alloc: fix documentation error
vmalloc: fix the owner argument for the new __vmalloc_node_range callers
mm/cma.c: use exact_nid true to fix possible per-numa cma leak
samples/vfs: avoid warning in statx override
mm/hugetlb.c: fix pages per hugetlb calculation
When I increased the upper bound of the min_free_kbytes value in
ee8eb9a5fe ("mm/page_alloc: increase default min_free_kbytes bound") I
forgot to tweak the above comment to reflect the new value. This patch
fixes that mistake.
Signed-off-by: Joel Savitz <jsavitz@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Fabrizio D'Angelo <fdangelo@redhat.com>
Link: http://lkml.kernel.org/r/20200624221236.29560-1-jsavitz@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the recently added new __vmalloc_node_range callers to pass the
correct values as the owner for display in /proc/vmallocinfo.
Fixes: 800e26b813 ("x86/hyperv: allocate the hypercall page with only read and execute bits")
Fixes: 10d5e97c1b ("arm64: use PAGE_KERNEL_ROX directly in alloc_insn_page")
Fixes: 7a0e27b2a0 ("mm: remove vmalloc_exec")
Reported-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200627075649.2455097-1-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Calling cma_declare_contiguous_nid() with false exact_nid for per-numa
reservation can easily cause cma leak and various confusion. For example,
mm/hugetlb.c is trying to reserve per-numa cma for gigantic pages. But it
can easily leak cma and make users confused when system has memoryless
nodes.
In case the system has 4 numa nodes, and only numa node0 has memory. if
we set hugetlb_cma=4G in bootargs, mm/hugetlb.c will get 4 cma areas for 4
different numa nodes. since exact_nid=false in current code, all 4 numa
nodes will get cma successfully from node0, but hugetlb_cma[1 to 3] will
never be available to hugepage will only allocate memory from
hugetlb_cma[0].
In case the system has 4 numa nodes, both numa node0&2 has memory, other
nodes have no memory. if we set hugetlb_cma=4G in bootargs, mm/hugetlb.c
will get 4 cma areas for 4 different numa nodes. since exact_nid=false in
current code, all 4 numa nodes will get cma successfully from node0 or 2,
but hugetlb_cma[1] and [3] will never be available to hugepage as
mm/hugetlb.c will only allocate memory from hugetlb_cma[0] and
hugetlb_cma[2]. This causes permanent leak of the cma areas which are
supposed to be used by memoryless node.
Of cource we can workaround the issue by letting mm/hugetlb.c scan all cma
areas in alloc_gigantic_page() even node_mask includes node0 only. that
means when node_mask includes node0 only, we can get page from
hugetlb_cma[1] to hugetlb_cma[3]. But this will cause kernel crash in
free_gigantic_page() while it wants to free page by:
cma_release(hugetlb_cma[page_to_nid(page)], page, 1 << order)
On the other hand, exact_nid=false won't consider numa distance, it might
be not that useful to leverage cma areas on remote nodes. I feel it is
much simpler to make exact_nid true to make everything clear. After that,
memoryless nodes won't be able to reserve per-numa CMA from other nodes
which have memory.
Fixes: cf11e85fc0 ("mm: hugetlb: optionally allocate gigantic hugepages using cma")
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Aslan Bakirov <aslan@fb.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andreas Schaufler <andreas.schaufler@gmx.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200628074345.27228-1-song.bao.hua@hisilicon.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Something changed recently to uncover this warning:
samples/vfs/test-statx.c:24:15: warning: `struct foo' declared inside parameter list will not be visible outside of this definition or declaration
24 | #define statx foo
| ^~~
Which is due the use of "struct statx" (here, "struct foo") in a function
prototype argument list before it has been defined:
int
# 56 "/usr/include/x86_64-linux-gnu/bits/statx-generic.h"
foo
# 56 "/usr/include/x86_64-linux-gnu/bits/statx-generic.h" 3 4
(int __dirfd, const char *__restrict __path, int __flags,
unsigned int __mask, struct
# 57 "/usr/include/x86_64-linux-gnu/bits/statx-generic.h"
foo
# 57 "/usr/include/x86_64-linux-gnu/bits/statx-generic.h" 3 4
*__restrict __buf)
__attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (2, 5)));
Add explicit struct before #include to avoid warning.
Fixes: f1b5618e01 ("vfs: Add a sample program for the new mount API")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/202006282213.C516EA6@keescook
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The routine hpage_nr_pages() was incorrectly used to calculate the number
of base pages in a hugetlb page. hpage_nr_pages is designed to be called
for THP pages and will return HPAGE_PMD_NR for hugetlb pages of any size.
Due to the context in which hpage_nr_pages was called, it is unlikely to
produce a user visible error. The routine with the incorrect call is only
exercised in the case of hugetlb memory error or migration. In addition,
this would need to be on an architecture which supports huge page sizes
less than PMD_SIZE. And, the vma containing the huge page would also need
to smaller than PMD_SIZE.
Fixes: c0d0381ade ("hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization")
Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200629185003.97202-1-mike.kravetz@oracle.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Fix a use-after-free bug when the fs shuts down.
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Merge tag 'xfs-5.8-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fix from Darrick Wong:
"Fix a use-after-free bug when the fs shuts down"
* tag 'xfs-5.8-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix use-after-free on CIL context on shutdown
There are a couple of places in net/sched/ that check skb->protocol and act
on the value there. However, in the presence of VLAN tags, the value stored
in skb->protocol can be inconsistent based on whether VLAN acceleration is
enabled. The commit quoted in the Fixes tag below fixed the users of
skb->protocol to use a helper that will always see the VLAN ethertype.
However, most of the callers don't actually handle the VLAN ethertype, but
expect to find the IP header type in the protocol field. This means that
things like changing the ECN field, or parsing diffserv values, stops
working if there's a VLAN tag, or if there are multiple nested VLAN
tags (QinQ).
To fix this, change the helper to take an argument that indicates whether
the caller wants to skip the VLAN tags or not. When skipping VLAN tags, we
make sure to skip all of them, so behaviour is consistent even in QinQ
mode.
To make the helper usable from the ECN code, move it to if_vlan.h instead
of pkt_sched.h.
v3:
- Remove empty lines
- Move vlan variable definitions inside loop in skb_protocol()
- Also use skb_protocol() helper in IP{,6}_ECN_decapsulate() and
bpf_skb_ecn_set_ce()
v2:
- Use eth_type_vlan() helper in skb_protocol()
- Also fix code that reads skb->protocol directly
- Change a couple of 'if/else if' statements to switch constructs to avoid
calling the helper twice
Reported-by: Ilya Ponetayev <i.ponetaev@ndmsystems.com>
Fixes: d8b9605d26 ("net: sched: fix skb->protocol use in case of accelerated vlan path")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'pci-v5.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"Fix a pcie_find_root_port() simplification that broke power management
because it didn't handle the edge case of finding the Root Port of a
Root Port itself (Mika Westerberg)""
* tag 'pci-v5.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Make pcie_find_root_port() work for Root Ports
Add a new device ID for Intel Tiger Lake to the DPTF battery
participant driver (Srinivas Pandruvada) and fix the Tiger Lake
fan device ID (Sumeet Pawnikar).
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Merge tag 'acpi-5.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"Add a new device ID for Intel Tiger Lake to the DPTF battery
participant driver (Srinivas Pandruvada) and fix the Tiger Lake fan
device ID (Sumeet Pawnikar)"
* tag 'acpi-5.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: fan: Fix Tiger Lake ACPI device ID
ACPI: DPTF: Add battery participant for TigerLake
