Pull vfs fixes from Al Viro:
"MS_MOVE regression fix + breakage in fsmount(2) (also introduced in
this cycle, along with fsmount(2) itself).
I'm still digging through the piles of mail, so there might be more
fixes to follow, but these two are obvious and self-contained, so
there's no point delaying those..."
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs/namespace: fix unprivileged mount propagation
vfs: fsmount: add missing mntget()
Pull networking fixes from David Miller:
"Lots of bug fixes here:
1) Out of bounds access in __bpf_skc_lookup, from Lorenz Bauer.
2) Fix rate reporting in cfg80211_calculate_bitrate_he(), from John
Crispin.
3) Use after free in psock backlog workqueue, from John Fastabend.
4) Fix source port matching in fdb peer flow rule of mlx5, from Raed
Salem.
5) Use atomic_inc_not_zero() in fl6_sock_lookup(), from Eric Dumazet.
6) Network header needs to be set for packet redirect in nfp, from
John Hurley.
7) Fix udp zerocopy refcnt, from Willem de Bruijn.
8) Don't assume linear buffers in vxlan and geneve error handlers,
from Stefano Brivio.
9) Fix TOS matching in mlxsw, from Jiri Pirko.
10) More SCTP cookie memory leak fixes, from Neil Horman.
11) Fix VLAN filtering in rtl8366, from Linus Walluij.
12) Various TCP SACK payload size and fragmentation memory limit fixes
from Eric Dumazet.
13) Use after free in pneigh_get_next(), also from Eric Dumazet.
14) LAPB control block leak fix from Jeremy Sowden"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (145 commits)
lapb: fixed leak of control-blocks.
tipc: purge deferredq list for each grp member in tipc_group_delete
ax25: fix inconsistent lock state in ax25_destroy_timer
neigh: fix use-after-free read in pneigh_get_next
tcp: fix compile error if !CONFIG_SYSCTL
hv_sock: Suppress bogus "may be used uninitialized" warnings
be2net: Fix number of Rx queues used for flow hashing
net: handle 802.1P vlan 0 packets properly
tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
tcp: add tcp_min_snd_mss sysctl
tcp: tcp_fragment() should apply sane memory limits
tcp: limit payload size of sacked skbs
Revert "net: phylink: set the autoneg state in phylink_phy_change"
bpf: fix nested bpf tracepoints with per-cpu data
bpf: Fix out of bounds memory access in bpf_sk_storage
vsock/virtio: set SOCK_DONE on peer shutdown
net: dsa: rtl8366: Fix up VLAN filtering
net: phylink: set the autoneg state in phylink_phy_change
net: add high_order_alloc_disable sysctl/static key
tcp: add tcp_tx_skb_cache sysctl
...
When propagating mounts across mount namespaces owned by different user
namespaces it is not possible anymore to move or umount the mount in the
less privileged mount namespace.
Here is a reproducer:
sudo mount -t tmpfs tmpfs /mnt
sudo --make-rshared /mnt
# create unprivileged user + mount namespace and preserve propagation
unshare -U -m --map-root --propagation=unchanged
# now change back to the original mount namespace in another terminal:
sudo mkdir /mnt/aaa
sudo mount -t tmpfs tmpfs /mnt/aaa
# now in the unprivileged user + mount namespace
mount --move /mnt/aaa /opt
Unfortunately, this is a pretty big deal for userspace since this is
e.g. used to inject mounts into running unprivileged containers.
So this regression really needs to go away rather quickly.
The problem is that a recent change falsely locked the root of the newly
added mounts by setting MNT_LOCKED. Fix this by only locking the mounts
on copy_mnt_ns() and not when adding a new mount.
Fixes: 3bd045cc9c ("separate copying and locking mount tree on cross-userns copies")
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Tested-by: Christian Brauner <christian@brauner.io>
Acked-by: Christian Brauner <christian@brauner.io>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sys_fsmount() needs to take a reference to the new mount when adding it
to the anonymous mount namespace. Otherwise the filesystem can be
unmounted while it's still in use, as found by syzkaller.
Reported-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: syzbot+99de05d099a170867f22@syzkaller.appspotmail.com
Reported-by: syzbot+7008b8b8ba7df475fdc8@syzkaller.appspotmail.com
Fixes: 93766fbd26 ("vfs: syscall: Add fsmount() to create a mount for a superblock")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
We can not hold the GlobalMid_Lock spinlock during the
dfs processing in cifs_reconnect since it invokes things that may sleep
and thus trigger :
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:23
Thus we need to drop the spinlock during this code block.
RHBZ: 1716743
Cc: stable@vger.kernel.org
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Some servers such as Windows 10 will return STATUS_INSUFFICIENT_RESOURCES
as the number of simultaneous SMB3 requests grows (even though the client
has sufficient credits). Return EAGAIN on STATUS_INSUFFICIENT_RESOURCES
so that we can retry writes which fail with this status code.
This (for example) fixes large file copies to Windows 10 on fast networks.
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
There are some backward incompatible features pending
for months, mainly due to on-disk format expensions.
However, we should ensure that it cannot be mounted with
old kernels. Otherwise, it will causes unexpected behaviors.
Fixes: ba2b77a820 ("staging: erofs: add super block operations")
Cc: <stable@vger.kernel.org> # 4.19+
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ad7150
- sense of bit for controlling adaptive vs fixed threshold was flipped.
* adt7316
- Fix a build issue due to wrong headers for gpio usage.
* lsm6dsx
- correctly suspend / resume i2c slaves when the host goes to sleep.
* mlx90632
- relax a compatability check to allow for newer devices.
Also one counters fix
* counter/ftm-quaddec
- missing dependencies in Kconfig.
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Merge tag 'iio-fixes-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for the 5.2 cycle.
* ad7150
- sense of bit for controlling adaptive vs fixed threshold was flipped.
* adt7316
- Fix a build issue due to wrong headers for gpio usage.
* lsm6dsx
- correctly suspend / resume i2c slaves when the host goes to sleep.
* mlx90632
- relax a compatability check to allow for newer devices.
Also one counters fix
* counter/ftm-quaddec
- missing dependencies in Kconfig.
* tag 'iio-fixes-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
counter/ftm-quaddec: Add missing dependencies in Kconfig
staging: iio: adt7316: Fix build errors when GPIOLIB is not set
iio: temperature: mlx90632 Relax the compatibility check
iio: imu: st_lsm6dsx: fix PM support for st_lsm6dsx i2c controller
staging:iio:ad7150: fix threshold mode config bit
Eric Dumazet says:
====================
tcp: make sack processing more robust
Jonathan Looney brought to our attention multiple problems
in TCP stack at the sender side.
SACK processing can be abused by malicious peers to either
cause overflows, or increase of memory usage.
First two patches fix the immediate problems.
Since the malicious peers abuse senders by advertizing a very
small MSS in their SYN or SYNACK packet, the last two
patches add a new sysctl so that admins can chose a higher
limit for MSS clamping.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix ssbd.c which depends implicitly on asm/ptrace.h including
linux/prctl.h (through for example linux/compat.h, then linux/time.h,
linux/seqlock.h, linux/spinlock.h and linux/irqflags.h), and uses
PR_SPEC* defines.
This is an issue since we'll soon be removing the include from
asm/ptrace.h.
Fixes: 9cdc0108ba ("arm64: ssbd: Add prctl interface for per-thread mitigation")
Cc: stable@vger.kernel.org
Signed-off-by: Anisse Astier <aastier@freebox.fr>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This tag contains fixes, defconfig, and DT data changes for the v5.2-rc
series. The fixes are relatively straightforward:
- Addition of a TLB fence in the vmalloc_fault path, so the CPU doesn't
enter an infinite page fault loop;
- Readdition of the pm_power_off export, so device drivers that
reassign it can now be built as modules;
- A udelay() fix for RV32, fixing a miscomputation of the delay time;
- Removal of deprecated smp_mb__*() barriers.
The tag also adds initial DT data infrastructure for arch/riscv, along
with initial data for the SiFive FU540-C000 SoC and the corresponding
HiFive Unleashed board.
We also update the RV64 defconfig to include some core drivers for the
FU540 in the build.
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Merge tag 'riscv-for-v5.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
"This contains fixes, defconfig, and DT data changes for the v5.2-rc
series.
The fixes are relatively straightforward:
- Addition of a TLB fence in the vmalloc_fault path, so the CPU
doesn't enter an infinite page fault loop
- Readdition of the pm_power_off export, so device drivers that
reassign it can now be built as modules
- A udelay() fix for RV32, fixing a miscomputation of the delay time
- Removal of deprecated smp_mb__*() barriers
This also adds initial DT data infrastructure for arch/riscv, along
with initial data for the SiFive FU540-C000 SoC and the corresponding
HiFive Unleashed board.
We also update the RV64 defconfig to include some core drivers for the
FU540 in the build"
* tag 'riscv-for-v5.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: remove unused barrier defines
riscv: mm: synchronize MMU after pte change
riscv: dts: add initial board data for the SiFive HiFive Unleashed
riscv: dts: add initial support for the SiFive FU540-C000 SoC
dt-bindings: riscv: convert cpu binding to json-schema
dt-bindings: riscv: sifive: add YAML documentation for the SiFive FU540
arch: riscv: add support for building DTB files from DT source data
riscv: Fix udelay in RV32.
riscv: export pm_power_off again
RISC-V: defconfig: enable clocks, serial console
When multiple iovecs reference the same page, each get_user_page call
will add a reference to the page. But once we've created the bio that
information gets lost and only a single reference will be dropped after
I/O completion. Use the same_page information returned from
__bio_try_merge_page to drop additional references to pages that were
already present in the bio.
Based on a patch from Ming Lei.
Link: https://lkml.org/lkml/2019/4/23/64
Fixes: 576ed913 ("block: use bio_add_page in bio_iov_iter_get_pages")
Reported-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We currently have an input same_page parameter to __bio_try_merge_page
to prohibit merging in the same page. The rationale for that is that
some callers need to account for every page added to a bio. Instead of
letting these callers call twice into the merge code to account for the
new vs existing page cases, just turn the paramter into an output one that
returns if a merge in the same page occured and let them act accordingly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
After the recent series of cleanups in the properties and xattrs modules
that landed in the 5.2 merge window, we ended up with a regression where
after deleting the compression xattr property through the setflags ioctl,
we don't set the BTRFS_INODE_COPY_EVERYTHING flag in the inode anymore.
As a consequence, if the inode was fsync'ed when it had the compression
property set, after deleting the compression property through the setflags
ioctl and fsync'ing again the inode, the log will still contain the
compression xattr, because the inode did not had that bit set, which
made the fsync not delete all xattrs from the log and copy all xattrs
from the subvolume tree to the log tree.
This regression happens due to the fact that that series of cleanups
made btrfs_set_prop() call the old function do_setxattr() (which is now
named btrfs_setxattr()), and not the old version of btrfs_setxattr(),
which is now called btrfs_setxattr_trans().
Fix this by setting the BTRFS_INODE_COPY_EVERYTHING bit in the current
btrfs_setxattr() function and remove it from everywhere else, including
its setup at btrfs_ioctl_setflags(). This is cleaner, avoids similar
regressions in the future, and centralizes the setup of the bit. After
all, the need to setup this bit should only be in the xattrs module,
since it is an implementation of xattrs.
Fixes: 04e6863b19 ("btrfs: split btrfs_setxattr calls regarding transaction")
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
They were introduced in commit fab957c11e ("RISC-V: Atomic and
Locking Code") long after commit 2e39465abc ("locking: Remove
deprecated smp_mb__() barriers") removed the remnants of all previous
instances from the tree.
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
[paul.walmsley@sifive.com: stripped spurious mbox header from patch
description; fixed commit references in patch header]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
An endpoint conflict occurs when the USB is working in device mode
during an isochronous communication. When the endpointA IN direction
is an isochronous IN endpoint, and the host sends an IN token to
endpointA on another device, then the OUT transaction may be missed
regardless the OUT endpoint number. Generally, this occurs when the
device is connected to the host through a hub and other devices are
connected to the same hub.
The affected OUT endpoint can be either control, bulk, isochronous, or
an interrupt endpoint. After the OUT endpoint is primed, if an IN token
to the same endpoint number on another device is received, then the OUT
endpoint may be unprimed (cannot be detected by software), which causes
this endpoint to no longer respond to the host OUT token, and thus, no
corresponding interrupt occurs.
There is no good workaround for this issue, the only thing the software
could do is numbering isochronous IN from the highest endpoint since we
have observed most of device number endpoint from the lowest.
Cc: <stable@vger.kernel.org> #v3.14+
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch updates the Qualcomm SoC repo to a new location.
Signed-off-by: Andy Gross <agross@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
SDIO IRQ is triggered by low level. It need disable SDIO IRQ
detected function. Otherwise the interrupt register can't be cleared.
It will process the interrupt more.
Signed-off-by: Jjian Zhou <jjian.zhou@mediatek.com>
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Yong Mao <yong.mao@mediatek.com>
Fixes: 5215b2e952 ("mmc: mediatek: Add MMC_CAP_SDIO_IRQ support")
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
We don't have a reproducible error case, yet our BSP team suggested that
the mmc_switch_status() command in mmc_select_hs400() should come after
the callback into the driver completing HS400 setup. It makes sense to
me because we want the status of a fully setup HS400, so it will
increase the reliability of the mmc_switch_status() command.
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Fixes: ba6c7ac3a2 ("mmc: core: more fine-grained hooks for HS400 tuning")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Because RISC-V compliant implementations can cache invalid entries
in TLB, an SFENCE.VMA is necessary after changes to the page table.
This patch adds an SFENCE.vma for the vmalloc_fault path.
Signed-off-by: ShihPo Hung <shihpo.hung@sifive.com>
[paul.walmsley@sifive.com: reversed tab->whitespace conversion,
wrapped comment lines]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-riscv@lists.infradead.org
Cc: stable@vger.kernel.org
My @arm.com address will stop working at the end of August, so update to
my @kernel.org address where you'll still be able to reach me.
When I say "stop working" I really mean "will go to my line manager", so
send patches there at your peril because they may reply with roadmaps
and spreadsheets. You have been warned.
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: arm-soc <arm@kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
When a cfs_rq sleeps and returns its quota, we delay for 5ms before
waking any throttled cfs_rqs to coalesce with other cfs_rqs going to
sleep, as this has to be done outside of the rq lock we hold.
The current code waits for 5ms without any sleeps, instead of waiting
for 5ms from the first sleep, which can delay the unthrottle more than
we want. Switch this around so that we can't push this forward forever.
This requires an extra flag rather than using hrtimer_active, since we
need to start a new timer if the current one is in the process of
finishing.
Signed-off-by: Ben Segall <bsegall@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Xunlei Pang <xlpang@linux.alibaba.com>
Acked-by: Phil Auld <pauld@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/xm26a7euy6iq.fsf_-_@bsegall-linux.svl.corp.google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Jens reported that significant performance can be had on some block
workloads by special casing local wakeups. That is, wakeups on the
current task before it schedules out.
Given something like the normal wait pattern:
for (;;) {
set_current_state(TASK_UNINTERRUPTIBLE);
if (cond)
break;
schedule();
}
__set_current_state(TASK_RUNNING);
Any wakeup (on this CPU) after set_current_state() and before
schedule() would benefit from this.
Normal wakeups take p->pi_lock, which serializes wakeups to the same
task. By eliding that we gain concurrency on:
- ttwu_stat(); we already had concurrency on rq stats, this now also
brings it to task stats. -ENOCARE
- tracepoints; it is now possible to get multiple instances of
trace_sched_waking() (and possibly trace_sched_wakeup()) for the
same task. Tracers will have to learn to cope.
Furthermore, p->pi_lock is used by set_special_state(), to order
against TASK_RUNNING stores from other CPUs. But since this is
strictly CPU local, we don't need the lock, and set_special_state()'s
disabling of IRQs is sufficient.
After the normal wakeup takes p->pi_lock it issues
smp_mb__after_spinlock(), in order to ensure the woken task must
observe prior stores before we observe the p->state. If this is CPU
local, this will be satisfied with a compiler barrier, and we rely on
try_to_wake_up() being a funcation call, which implies such.
Since, when 'p == current', 'p->on_rq' must be true, the normal wakeup
would continue into the ttwu_remote() branch, which normally is
concerned with exactly this wakeup scenario, except from a remote CPU.
IOW we're waking a task that is still running. In this case, we can
trivially avoid taking rq->lock, all that's left from this is to set
p->state.
This then yields an extremely simple and fast path for 'p == current'.
Reported-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qian Cai <cai@lca.pw>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: akpm@linux-foundation.org
Cc: gkohli@codeaurora.org
Cc: hch@lst.de
Cc: oleg@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
runnable_avg_yN_inv[] is only used in kernel/sched/pelt.c but was
included in several other places because they need other macros all
came from kernel/sched/sched-pelt.h which was generated by
Documentation/scheduler/sched-pelt. As the result, it causes compilation
a lot of warnings,
kernel/sched/sched-pelt.h:4:18: warning: 'runnable_avg_yN_inv' defined but not used [-Wunused-const-variable=]
kernel/sched/sched-pelt.h:4:18: warning: 'runnable_avg_yN_inv' defined but not used [-Wunused-const-variable=]
kernel/sched/sched-pelt.h:4:18: warning: 'runnable_avg_yN_inv' defined but not used [-Wunused-const-variable=]
...
Silence it by appending the __maybe_unused attribute for it, so all
generated variables and macros can still be kept in the same file.
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1559596304-31581-1-git-send-email-cai@lca.pw
Signed-off-by: Ingo Molnar <mingo@kernel.org>
cfs_rq_has_blocked() and others_have_blocked() are only used within
update_blocked_averages(). The !CONFIG_FAIR_GROUP_SCHED version of the
latter calls them within a #define CONFIG_NO_HZ_COMMON block, whereas
the CONFIG_FAIR_GROUP_SCHED one calls them unconditionnally.
As reported by Qian, the above leads to this warning in
!CONFIG_NO_HZ_COMMON configs:
kernel/sched/fair.c: In function 'update_blocked_averages':
kernel/sched/fair.c:7750:7: warning: variable 'done' set but not used [-Wunused-but-set-variable]
It wouldn't be wrong to keep cfs_rq_has_blocked() and
others_have_blocked() as they are, but since their only current use is
to figure out when we can stop calling update_blocked_averages() on
fully decayed NOHZ idle CPUs, we can give them a new definition for
!CONFIG_NO_HZ_COMMON.
Change the definition of cfs_rq_has_blocked() and
others_have_blocked() for !CONFIG_NO_HZ_COMMON so that the
NOHZ-specific blocks of update_blocked_averages() become no-ops and
the 'done' variable gets optimised out.
While at it, remove the CONFIG_NO_HZ_COMMON block from the
!CONFIG_FAIR_GROUP_SCHED definition of update_blocked_averages() by
using the newly-introduced update_blocked_load_status() helper.
No change in functionality intended.
[ Additions by Peter Zijlstra. ]
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190603115424.7951-1-valentin.schneider@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Non-inline io_schedule() was introduced in:
commit 10ab56434f ("sched/core: Separate out io_schedule_prepare() and io_schedule_finish()")
Keep in line with io_schedule_timeout(), otherwise "/proc/<pid>/wchan" will
report io_schedule() rather than its callers when waiting for IO.
Reported-by: Jilong Kou <koujilong@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miao Xie <miaoxie@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 10ab56434f ("sched/core: Separate out io_schedule_prepare() and io_schedule_finish()")
Link: https://lkml.kernel.org/r/20190603091338.2695-1-gaoxiang25@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Add initial board data for the SiFive HiFive Unleashed A00.
Currently the data populated in this DT file describes the board
DRAM configuration and the external clock sources that supply the
PRCI.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Loys Ollivier <lollivier@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Add initial support for the SiFive FU540-C000 SoC. This is a 28nm SoC
based around the SiFive U54-MC core complex and a TileLink
interconnect.
This file is expected to grow as more device drivers are added to the
kernel.
This patch includes a fix to the QSPI memory map due to a
documentation bug, found by ShihPo Hung <shihpo.hung@sifive.com>, adds
entries for the I2C controller, and merges all DT changes that
formerly were made dynamically by the riscv-pk BBL proxy kernel.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Loys Ollivier <lollivier@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: ShihPo Hung <shihpo.hung@sifive.com>
Cc: devicetree@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
At Rob's request, we're starting to migrate our DT binding
documentation to json-schema YAML format. Start by converting our cpu
binding documentation. While doing so, document more properties and
nodes. This includes adding binding documentation support for the E51
and U54 CPU cores ("harts") that are present on this SoC. These cores
are described in:
https://static.dev.sifive.com/FU540-C000-v1.0.pdf
This cpus.yaml file is intended to be a starting point and to
evolve over time. It passes dt-doc-validate as of the yaml-bindings
commit 4c79d42e9216.
This patch was originally based on the ARM json-schema binding
documentation as added by commit 672951cbd1 ("dt-bindings: arm: Convert
cpu binding to json-schema").
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Add YAML DT binding documentation for the SiFive FU540 SoC. This
SoC is documented at:
https://static.dev.sifive.com/FU540-C000-v1.0.pdf
Passes dt-doc-validate, as of yaml-bindings commit 4c79d42e9216.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: devicetree@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Similar to ARM64, add support for building DTB files from DT source
data for RISC-V boards.
This patch starts with the infrastructure needed for SiFive boards.
Boards from other vendors would add support here in a similar form.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Loys Ollivier <lollivier@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
There is pvinfo writing come from vgpu might be unexpected, like
writing to one unknown address, GVT-g should do as reserved register
to discard any invalid write. Now GVT-g lets it write to the vreg
without prompt error message, should ignore the unexpected pvinfo
write access and leave the vreg as the default value.
For possible guest query GVT-g host feature, this returned proper
value instead of wrong guest setting.
v2: ignore unexpected pvinfo write instead of return predefined value
Fixes: e39c5add32 ("drm/i915/gvt: vGPU MMIO virtualization")
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Weinan Li <weinan.z.li@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
lapb_register calls lapb_create_cb, which initializes the control-
block's ref-count to one, and __lapb_insert_cb, which increments it when
adding the new block to the list of blocks.
lapb_unregister calls __lapb_remove_cb, which decrements the ref-count
when removing control-block from the list of blocks, and calls lapb_put
itself to decrement the ref-count before returning.
However, lapb_unregister also calls __lapb_devtostruct to look up the
right control-block for the given net_device, and __lapb_devtostruct
also bumps the ref-count, which means that when lapb_unregister returns
the ref-count is still 1 and the control-block is leaked.
Call lapb_put after __lapb_devtostruct to fix leak.
Reported-by: syzbot+afb980676c836b4a0afa@syzkaller.appspotmail.com
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Syzbot reported a memleak caused by grp members' deferredq list not
purged when the grp is be deleted.
The issue occurs when more(msg_grp_bc_seqno(hdr), m->bc_rcv_nxt) in
tipc_group_filter_msg() and the skb will stay in deferredq.
So fix it by calling __skb_queue_purge for each member's deferredq
in tipc_group_delete() when a tipc sk leaves the grp.
Fixes: b87a5ea31c ("tipc: guarantee group unicast doesn't bypass group broadcast")
Reported-by: syzbot+78fbe679c8ca8d264a8d@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tcp_tx_skb_cache_key and tcp_rx_skb_cache_key must be available
even if CONFIG_SYSCTL is not set.
Fixes: 0b7d7f6b22 ("tcp: add tcp_tx_skb_cache sysctl")
Fixes: ede61ca474 ("tcp: add tcp_rx_skb_cache sysctl")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
gcc 8.2.0 may report these bogus warnings under some condition:
warning: ‘vnew’ may be used uninitialized in this function
warning: ‘hvs_new’ may be used uninitialized in this function
Actually, the 2 pointers are only initialized and used if the variable
"conn_from_host" is true. The code is not buggy here.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Number of Rx queues used for flow hashing returned by the driver is
incorrect and this bug prevents user to use the last Rx queue in
indirection table.
Let's say we have a NIC with 6 combined queues:
[root@sm-03 ~]# ethtool -l enp4s0f0
Channel parameters for enp4s0f0:
Pre-set maximums:
RX: 5
TX: 5
Other: 0
Combined: 6
Current hardware settings:
RX: 0
TX: 0
Other: 0
Combined: 6
Default indirection table maps all (6) queues equally but the driver
reports only 5 rings available.
[root@sm-03 ~]# ethtool -x enp4s0f0
RX flow hash indirection table for enp4s0f0 with 5 RX ring(s):
0: 0 1 2 3 4 5 0 1
8: 2 3 4 5 0 1 2 3
16: 4 5 0 1 2 3 4 5
24: 0 1 2 3 4 5 0 1
...
Now change indirection table somehow:
[root@sm-03 ~]# ethtool -X enp4s0f0 weight 1 1
[root@sm-03 ~]# ethtool -x enp4s0f0
RX flow hash indirection table for enp4s0f0 with 6 RX ring(s):
0: 0 0 0 0 0 0 0 0
...
64: 1 1 1 1 1 1 1 1
...
Now it is not possible to change mapping back to equal (default) state:
[root@sm-03 ~]# ethtool -X enp4s0f0 equal 6
Cannot set RX flow hash configuration: Invalid argument
Fixes: 594ad54a2c ("be2net: Add support for setting and getting rx flow hash options")
Reported-by: Tianhao <tizhao@redhat.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When stack receives pkt: [802.1P vlan 0][802.1AD vlan 100][IPv4],
vlan_do_receive() returns false if it does not find vlan_dev. Later
__netif_receive_skb_core() fails to find packet type handler for
skb->protocol 801.1AD and drops the packet.
801.1P header with vlan id 0 should be handled as untagged packets.
This patch fixes it by checking if vlan_id is 0 and processes next vlan
header.
Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Three fixes mostly for dra7 SoC variants that have some devices disabled
compared to the base SoC. These got broken by the change of making devices
probe with ti-sysc interconnect target module and went unnnoticed for a
while. And there is no clkcel bit for timer12 unlike timer1. Also included
is a GPIO direction fix for phytec SDIO card detection.
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Merge tag 'omap-for-v5.2/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omap variants
Three fixes mostly for dra7 SoC variants that have some devices disabled
compared to the base SoC. These got broken by the change of making devices
probe with ti-sysc interconnect target module and went unnnoticed for a
while. And there is no clkcel bit for timer12 unlike timer1. Also included
is a GPIO direction fix for phytec SDIO card detection.
* tag 'omap-for-v5.2/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: am335x phytec boards: Fix cd-gpios active level
ARM: dts: dra72x: Disable usb4_tm target module
ARM: dts: Drop bogus CLKSEL for timer12 on dra7
Signed-off-by: Olof Johansson <olof@lixom.net>
This addresses an issue with probe of IO expander on DA850 EVM. There is
also a WARN_ON() fix on DA850 and DA830 devices.
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Merge tag 'davinci-fixes-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes
DaVinci fixes for v5.2 kernel.
This addresses an issue with probe of IO expander on DA850 EVM. There is
also a WARN_ON() fix on DA850 and DA830 devices.
* tag 'davinci-fixes-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: da8xx: specify dma_coherent_mask for lcdc
ARM: davinci: da850-evm: call regulator_has_full_constraints()
Signed-off-by: Olof Johansson <olof@lixom.net>
Fixing defconfig allowing to use Ethernet again on Armada 38x based
boards
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Merge tag 'mvebu-fixes-5.2-1' of git://git.infradead.org/linux-mvebu into fixes
mvebu fixes for 5.2 (part 1)
Fixing defconfig allowing to use Ethernet again on Armada 38x based
boards
* tag 'mvebu-fixes-5.2-1' of git://git.infradead.org/linux-mvebu:
ARM: mvebu_v7_defconfig: fix Ethernet on Clearfog
Signed-off-by: Olof Johansson <olof@lixom.net>
- Fix up a Kbuild warning when SOC_TI is not set
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Merge tag 'am654-fixes-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux into fixes
Texas Instruments AM65x fixes for v5.2
- Fix up a Kbuild warning when SOC_TI is not set
* tag 'am654-fixes-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux:
arm64: arch_k3: Fix kconfig dependency warning
Signed-off-by: Olof Johansson <olof@lixom.net>
5.2-rc1, please pull the following:
- Florian fixes the remaining Broadcom DTS files to have a valid
device_type = "memory" property which was missed during the removal of
skeleton.dtsi
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Merge tag 'arm-soc/for-5.2/devicetree-fixes' of https://github.com/Broadcom/stblinux into fixes
This pull request contains Broadcom ARM-based SoCs Device Tree fixes for
5.2-rc1, please pull the following:
- Florian fixes the remaining Broadcom DTS files to have a valid
device_type = "memory" property which was missed during the removal of
skeleton.dtsi
* tag 'arm-soc/for-5.2/devicetree-fixes' of https://github.com/Broadcom/stblinux:
ARM: dts: bcm: Add missing device_type = "memory" property
Signed-off-by: Olof Johansson <olof@lixom.net>
This series contains dra7 mmc voltage fixes, and fixes to the recent
changes to probe devices with device tree data insteas of legacy
platform data:
- Two fixes for dra7 mmc that needs 1.8V mode disabled as in case of a
reset, the bootrom will try to access the mmc card at 3.3V potentially
damaging the card
- Two regression fixes for am335x d_can. We must allow devices with no
control registers for ti-sysc interconnect target module driver for
at least d_can, and we remove the incorrect control registers for
d_can. And we must configure the osc clock for d_can as otherwise
register access may fail depending on the bootloader version
- Four regression fixes for dra7 variant dts files to tag rtc and usb4
as disabled for dra71x and dra76x. These SoC variants do not have
these devices, and got accidentally enabled when the L4 interconnect
got defined in the dra7-l4.dtsi for the dra7 SoC family
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Merge tag 'omap-for-v5.2/fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omap variants for dra7 mmc voltage and boot issues
This series contains dra7 mmc voltage fixes, and fixes to the recent
changes to probe devices with device tree data insteas of legacy
platform data:
- Two fixes for dra7 mmc that needs 1.8V mode disabled as in case of a
reset, the bootrom will try to access the mmc card at 3.3V potentially
damaging the card
- Two regression fixes for am335x d_can. We must allow devices with no
control registers for ti-sysc interconnect target module driver for
at least d_can, and we remove the incorrect control registers for
d_can. And we must configure the osc clock for d_can as otherwise
register access may fail depending on the bootloader version
- Four regression fixes for dra7 variant dts files to tag rtc and usb4
as disabled for dra71x and dra76x. These SoC variants do not have
these devices, and got accidentally enabled when the L4 interconnect
got defined in the dra7-l4.dtsi for the dra7 SoC family
* tag 'omap-for-v5.2/fixes-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: dra71x: Disable usb4_tm target module
ARM: dts: dra71x: Disable rtc target module
ARM: dts: dra76x: Disable usb4_tm target module
ARM: dts: dra76x: Disable rtc target module
ARM: dts: dra76x: Update MMC2_HS200_MANUAL1 iodelay values
ARM: dts: am57xx-idk: Remove support for voltage switching for SD card
bus: ti-sysc: Handle devices with no control registers
ARM: dts: Configure osc clock for d_can on am335x
Signed-off-by: Olof Johansson <olof@lixom.net>
- A build fix for soc-imx8 driver which needs SOC_BUS support. To
avoid dealing with the dependency for every single i.MX SoC bus
driver, we selects at from architecture level.
- A fix on i.MX SCU firmware driver to ensure SCU irq is enabled only
after IPC is ready.
- A regression fix on cpuidle-imx6sx driver, which causes some
characters loss on serial communication.
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Merge tag 'imx-fixes-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 5.2:
- A build fix for soc-imx8 driver which needs SOC_BUS support. To
avoid dealing with the dependency for every single i.MX SoC bus
driver, we selects at from architecture level.
- A fix on i.MX SCU firmware driver to ensure SCU irq is enabled only
after IPC is ready.
- A regression fix on cpuidle-imx6sx driver, which causes some
characters loss on serial communication.
* tag 'imx-fixes-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: imx: cpuidle-imx6sx: Restrict the SW2ISO increase to i.MX6SX
firmware: imx: SCU irq should ONLY be enabled after SCU IPC is ready
arm64: imx: Fix build error without CONFIG_SOC_BUS
Signed-off-by: Olof Johansson <olof@lixom.net>
