Five changes, two in drivers (qla2xxx, zfcp), one to MAINTAINERS
(qla2xxx) and two in the core. The last two are mostly about removing
incorrect messages from the kernel log: the resid message is
definitely wrong and the sync cache on protected drive problem is
arguably wrong.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Five changes, two in drivers (qla2xxx, zfcp), one to MAINTAINERS
(qla2xxx) and two in the core.
The last two are mostly about removing incorrect messages from the
kernel log: the resid message is definitely wrong and the sync cache
on protected drive problem is arguably wrong"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: MAINTAINERS: Update qla2xxx driver
scsi: zfcp: fix reaction on bit error threshold notification
scsi: core: save/restore command resid for error handling
scsi: qla2xxx: Remove WARN_ON_ONCE in qla2x00_status_cont_entry()
scsi: sd: Ignore a failure to sync cache due to lack of authorization
NET_VENDOR_BROADCOM is intended to control a kconfig menu only.
It should not have anything to do with code generation.
As such, it should not select DIMLIB for all drivers under
NET_VENDOR_BROADCOM. Instead each driver that needs DIMLIB should
select it (being the symbols SYSTEMPORT, BNXT, and BCMGENET).
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1907021810220.13058@ramsan.of.borg/
Fixes: 4f75da3666 ("linux/dim: Move implementation to .c files")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
Cc: Tal Gilboa <talgi@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: netdev@vger.kernel.org
Cc: linux-rdma@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use my kernel.org address for all entries in MAINTAINERS.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
phydev->dev_flags is entirely dependent on the PHY device driver which
is going to be used, setting the internal GENET PHY revision in those
bits only makes sense when drivers/net/phy/bcm7xxx.c is the PHY driver
being used.
Fixes: 487320c541 ("net: bcmgenet: communicate integrated PHY revision to PHY driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
While invalidating the dst, we assign backhole_netdev instead of
loopback device. However, this device does not have idev pointer
and hence no ip6_ptr even if IPv6 is enabled. Possibly this has
triggered the syzbot reported crash.
The syzbot report does not have reproducer, however, this is the
only device that doesn't have matching idev created.
Crash instruction is :
static inline bool ip6_ignore_linkdown(const struct net_device *dev)
{
const struct inet6_dev *idev = __in6_dev_get(dev);
return !!idev->cnf.ignore_routes_with_linkdown; <= crash
}
Also ipv6 always assumes presence of idev and never checks for it
being NULL (as does the above referenced code). So adding a idev
for the blackhole_netdev to avoid this class of crashes in the future.
Signed-off-by: David S. Miller <davem@davemloft.net>
HAVE_FAST_GUP enables the lockless quick page table walker for simple
cases, and is a nice optimization for some random loads that can then
use get_user_pages_fast() rather than the more careful page walker.
However, for some unexplained reason, it seems to be subtly broken on
sparc64. The breakage is only with some compiler versions and some
hardware, and nobody seems to have figured out what triggers it,
although there's a simple reprodicer for the problem when it does
trigger.
The problem was introduced with the conversion to the generic GUP code
in commit 7b9afb86b6 ("sparc64: use the generic get_user_pages_fast
code"), but nothing looks obviously wrong in that conversion. It may be
a compiler bug that just hits us with the code reorganization. Or it
may be something very specific to sparc64.
This disables HAVE_FAST_GUP entirely. That makes things like futexes a
bit slower, but at least they work. If we can figure out the trigger,
that would be lovely, but it's been three months already..
Link: https://lore.kernel.org/lkml/20190717215956.GA30369@altlinux.org/
Fixes: 7b9afb86b6 ("sparc64: use the generic get_user_pages_fast code")
Reported-by: Dmitry V Levin <ldv@altlinux.org>
Reported-by: Anatoly Pugachev <matorola@gmail.com>
Requested-by: Meelis Roos <mroos@linux.ee>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Second set of fixes for 5.4. ath10k regression and iwlwifi BAD_COMMAND
bug are the ones getting most reports at the moment.
ath10k
* fix throughput regression on QCA98XX
iwlwifi
* fix initialization of 3168 devices (the infamous BAD_COMMAND bug)
* other smaller fixes
rt2x00
* don't include input-polldev.h header
* fix hw reset to work during first 5 minutes of system run
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Merge tag 'wireless-drivers-for-davem-2019-10-15' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 5.4
Second set of fixes for 5.4. ath10k regression and iwlwifi BAD_COMMAND
bug are the ones getting most reports at the moment.
ath10k
* fix throughput regression on QCA98XX
iwlwifi
* fix initialization of 3168 devices (the infamous BAD_COMMAND bug)
* other smaller fixes
rt2x00
* don't include input-polldev.h header
* fix hw reset to work during first 5 minutes of system run
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Panfrost uses multiple schedulers (one for each slot, so 2 in reality),
and on a timeout has to stop all the schedulers to safely perform a
reset. However more than one scheduler can trigger a timeout at the same
time. This race condition results in jobs being freed while they are
still in use.
When stopping other slots use cancel_delayed_work_sync() to ensure that
any timeout started for that slot has completed. Also use
mutex_trylock() to obtain reset_lock. This means that only one thread
attempts the reset, the other threads will simply complete without doing
anything (the first thread will wait for this in the call to
cancel_delayed_work_sync()).
While we're here and since the function is already dependent on
sched_job not being NULL, let's remove the unnecessary checks.
Fixes: aa20236784 ("drm/panfrost: Prevent concurrent resets")
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191009094456.9704-1-steven.price@arm.com
Pull parisc fixes from Helge Deller:
- Fix a parisc-specific fallout of Christoph's
dma_set_mask_and_coherent() patches (Sven)
- Fix a vmap memory leak in ioremap()/ioremap() (Helge)
- Some minor cleanups and documentation updates (Nick, Helge)
* 'parisc-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Remove 32-bit DMA enforcement from sba_iommu
parisc: Fix vmap memory leak in ioremap()/iounmap()
parisc: prefer __section from compiler_attributes.h
parisc: sysctl.c: Use CONFIG_PARISC instead of __hppa_ define
MAINTAINERS: Add hp_sdc drivers to parisc arch
Pull dmi fix from Jean Delvare.
* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
firmware: dmi: Fix unlikely out-of-bounds read in save_mem_devices
rq_qos_del() incorrectly assigns the node being deleted to the head if
it was the first on the list in the !prev path. Fix it by iterating
with ** instead.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Fixes: a79050434b ("blk-rq-qos: refactor out common elements of blk-wbt")
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
blkcg_activate_policy() has the following bugs.
* cf09a8ee19 ("blkcg: pass @q and @blkcg into
blkcg_pol_alloc_pd_fn()") added @blkcg to ->pd_alloc_fn(); however,
blkcg_activate_policy() ends up using pd's allocated for the root
blkcg for all preallocations, so ->pd_init_fn() for non-root blkcgs
can be passed in pd's which are allocated for the root blkcg.
For blk-iocost, this means that ->pd_init_fn() can write beyond the
end of the allocated object as it determines the length of the flex
array at the end based on the blkcg's nesting level.
* Each pd is initialized as they get allocated. If alloc fails, the
policy will get freed with pd's initialized on it.
* After the above partial failure, the partial pds are not freed.
This patch fixes all the above issues by
* Restructuring blkcg_activate_policy() so that alloc and init passes
are separate. Init takes place only after all allocs succeeded and
on failure all allocated pds are freed.
* Unifying and fixing the cleanup of the remaining pd_prealloc.
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: cf09a8ee19 ("blkcg: pass @q and @blkcg into blkcg_pol_alloc_pd_fn()")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
64-bit time is a signed quantity in the kernel, so the bulkstat
structure should reflect that. Note that the structure size stays
the same and that we have not yet published userspace headers for this
new ioctl so there are no users to break.
Fixes: 7035f9724f ("xfs: introduce new v5 bulkstat structure")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
There is a warning message in my test with below steps:
# rbd bench --io-type write --io-size 4K --io-threads 1 --io-pattern rand test &
# sleep 5
# pkill -9 rbd
# rbd map test &
# sleep 5
# pkill rbd
The reason is that the rbd_add_acquire_lock() is interruptable,
that means, when we kill the waiting on ->acquire_wait, the lock_dwork
could be still running.
1. do_rbd_add() 2. lock_dwork
rbd_add_acquire_lock()
- queue_delayed_work()
lock_dwork queued
- wait_for_completion_killable_timeout() <-- kill happen
rbd_dev_image_unlock() <-- UNLOCKED now, nothing to do.
rbd_dev_device_release()
rbd_dev_image_release()
- ...
lock successed here
- cancel_delayed_work_sync(&rbd_dev->lock_dwork)
Then when we reach the rbd_dev_free(), WARN_ON is triggered because
lock_state is not RBD_LOCK_STATE_UNLOCKED.
To fix it, this commit make sure the lock_dwork was finished before
calling rbd_dev_image_unlock().
On the other hand, this would not happend in do_rbd_remove(), because
after rbd mapped, lock_dwork will only be queued for IO request, and
request will continue unless lock_dwork finished. when we call
rbd_dev_image_unlock() in do_rbd_remove(), all requests are done.
That means, lock_state should not be locked again after
rbd_dev_image_unlock().
[ Cancel lock_dwork in rbd_add_acquire_lock(), only if the wait is
interrupted. ]
Fixes: 637cd06053 ("rbd: new exclusive lock wait/wake code")
Signed-off-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In the future, we're going to want to extend the ceph_reply_info_extra
for create replies. Currently though, the kernel code doesn't accept an
extra blob that is larger than the expected data.
Change the code to skip over any unrecognized fields at the end of the
extra blob, rather than returning -EIO.
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Now we recalculate the sequence of timeout with 'req->sequence =
ctx->cached_sq_head + count - 1', judge the right place to insert
for timeout_list by compare the number of request we still expected for
completion. But we have not consider about the situation of overflow:
1. ctx->cached_sq_head + count - 1 may overflow. And a bigger count for
the new timeout req can have a small req->sequence.
2. cached_sq_head of now may overflow compare with before req. And it
will lead the timeout req with small req->sequence.
This overflow will lead to the misorder of timeout_list, which can lead
to the wrong order of the completion of timeout_list. Fix it by reuse
req->submit.sequence to store the count, and change the logic of
inserting sort in io_timeout.
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Fix bashism reported by checkbashisms by using only one '=':
possible bashism in scripts/setlocalversion line 96 (should be 'b = a'):
if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
Fixes: 38b3439d84 ("setlocalversion: update mercurial tag parsing")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Mike Crowe <mcrowe@zipitwireless.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
During nvme_tcp_setup_cmd_pdu error flow, one must call nvme_cleanup_cmd
since it's symmetric to nvme_setup_cmd.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
During nvme_loop_queue_rq error flow, one must call nvme_cleanup_cmd since
it's symmetric to nvme_setup_cmd.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
IOMMU Event Log encodes 20-bit PASID for events:
ILLEGAL_DEV_TABLE_ENTRY
IO_PAGE_FAULT
PAGE_TAB_HARDWARE_ERROR
INVALID_DEVICE_REQUEST
as:
PASID[15:0] = bit 47:32
PASID[19:16] = bit 19:16
Note that INVALID_PPR_REQUEST event has different encoding
from the rest of the events as the following:
PASID[15:0] = bit 31:16
PASID[19:16] = bit 45:42
So, fixes the decoding logic.
Fixes: d64c0486ed ("iommu/amd: Update the PASID information printed to the system log")
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
As platform_get_irq() now prints an error when the interrupt does not
exist, calling it gratuitously causes scary messages like:
ipmmu-vmsa e6740000.mmu: IRQ index 0 not found
Fix this by moving the call to platform_get_irq() down, where the
existence of the interrupt is mandatory.
Fixes: 7723f4c5ec ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Till now the Rockchip iommu driver walked through the irq list via
platform_get_irq() until it encountered an ENXIO error. With the
recent change to add a central error message, this always results
in such an error for each iommu on probe and shutdown.
To not confuse people, switch to platform_count_irqs() to get the
actual number of interrupts before walking through them.
Fixes: 7723f4c5ec ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Check that the per-cpu cluster mask pointer has been set prior to
clearing a dying cpu's bit. The per-cpu pointer is not set until the
target cpu reaches smp_callin() during CPUHP_BRINGUP_CPU, whereas the
teardown function, x2apic_dead_cpu(), is associated with the earlier
CPUHP_X2APIC_PREPARE. If an error occurs before the cpu is awakened,
e.g. if do_boot_cpu() itself fails, x2apic_dead_cpu() will dereference
the NULL pointer and cause a panic.
smpboot: do_boot_cpu failed(-22) to wakeup CPU#1
BUG: kernel NULL pointer dereference, address: 0000000000000008
RIP: 0010:x2apic_dead_cpu+0x1a/0x30
Call Trace:
cpuhp_invoke_callback+0x9a/0x580
_cpu_up+0x10d/0x140
do_cpu_up+0x69/0xb0
smp_init+0x63/0xa9
kernel_init_freeable+0xd7/0x229
? rest_init+0xa0/0xa0
kernel_init+0xa/0x100
ret_from_fork+0x35/0x40
Fixes: 023a611748 ("x86/apic/x2apic: Simplify cluster management")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20191001205019.5789-1-sean.j.christopherson@intel.com
Now that there's Hyper-V IOMMU driver, Linux can switch to x2apic mode
when supported by the vcpus.
However, the apic access functions for Hyper-V enlightened apic assume
xapic mode only.
As a result, Linux fails to bring up secondary cpus when run as a guest
in QEMU/KVM with both hv_apic and x2apic enabled.
According to Michael Kelley, when in x2apic mode, the Hyper-V synthetic
apic MSRs behave exactly the same as the corresponding architectural
x2apic MSRs, so there's no need to override the apic accessors. The
only exception is hv_apic_eoi_write, which benefits from lazy EOI when
available; however, its implementation works for both xapic and x2apic
modes.
Fixes: 29217a4746 ("iommu/hyper-v: Add Hyper-V stub IOMMU driver")
Fixes: 6b48cb5f83 ("X86/Hyper-V: Enlighten APIC access")
Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20191010123258.16919-1-rkagan@virtuozzo.com
There is a bug in create_safe_exec_page(), when page table is allocated
it is not checked that table is allocated successfully:
But it is dereferenced in: pgd_none(READ_ONCE(*pgdp)). Check that
allocation was successful.
Fixes: 82869ac57b ("arm64: kernel: Add support for hibernate/suspend-to-disk")
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Will Deacon <will@kernel.org>
If CONFIG_ARM64_SVE=n then we fail to report ID_AA64ZFR0_EL1 as 0 when
read by userspace, despite being required by the architecture. Although
this is theoretically a change in ABI, userspace will first check for
the presence of SVE via the HWCAP or the ID_AA64PFR0_EL1.SVE field
before probing the ID_AA64ZFR0_EL1 register. Given that these are
reported correctly for this configuration, we can safely tighten up the
current behaviour.
Ensure ID_AA64ZFR0_EL1 is treated as RAZ when CONFIG_ARM64_SVE=n.
Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Dave Martin <dave.martin@arm.com>
Fixes: 06a916feca ("arm64: Expose SVE2 features for userspace")
Signed-off-by: Will Deacon <will@kernel.org>
Igor Russkikh says:
====================
Aquantia/Marvell AQtion atlantic driver fixes 10/2019
Here is a set of various bugfixes, to be considered for stable as well.
V2: double space removed
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
macvlan and multicast handling is now mixed up.
The explicit issue is that macvlan interface gets broken (no traffic)
after clearing MULTICAST flag on the real interface.
We now do separate logic and consider both ALLMULTI and MULTICAST
flags on the device.
Fixes: 11ba961c91 ("net: aquantia: Fix IFF_ALLMULTI flag functionality")
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Individual descriptors on LRO TCP session should be checked
for CRC errors. It was discovered that HW recalculates
L4 checksums on LRO session and does not break it up on bad L4
csum.
Thus, driver should aggregate HW LRO L4 statuses from all individual
buffers of LRO session and drop packet if one of the buffers has bad
L4 checksum.
Fixes: f38f1ee8ae ("net: aquantia: check rx csum for all packets in LRO session")
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
>From HW specification to correctly reset HW caches (this is a required
workaround when stopping the device), register bit should actually
be toggled.
It was previosly always just set. Due to the way driver stops HW this
never actually caused any issues, but it still may, so cleaning this up.
Fixes: 7a1bb49461 ("net: aquantia: fix potential IOMMU fault after driver unbind")
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chip temperature is a two byte word, colocated internally with cable
length data. We do all readouts from HW memory by dwords, thus
we should clear extra high bytes, otherwise temperature output
gets weird as soon as we attach a cable to the NIC.
Fixes: 8f89401186 ("net: aquantia: add infrastructure to readout chip temperature")
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge more fixes from Andrew Morton:
"The usual shower of hotfixes and some followups to the recently merged
page_owner enhancements"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm/memory-failure: poison read receives SIGKILL instead of SIGBUS if mmaped more than once
mm/slab.c: fix kernel-doc warning for __ksize()
xarray.h: fix kernel-doc warning
bitmap.h: fix kernel-doc warning and typo
fs/fs-writeback.c: fix kernel-doc warning
fs/libfs.c: fix kernel-doc warning
fs/direct-io.c: fix kernel-doc warning
mm, compaction: fix wrong pfn handling in __reset_isolation_pfn()
mm, hugetlb: allow hugepage allocations to reclaim as needed
lib/test_meminit: add a kmem_cache_alloc_bulk() test
mm/slub.c: init_on_free=1 should wipe freelist ptr for bulk allocations
lib/generic-radix-tree.c: add kmemleak annotations
mm/slub: fix a deadlock in show_slab_objects()
mm, page_owner: rename flag indicating that page is allocated
mm, page_owner: decouple freeing stack trace from debug_pagealloc
mm, page_owner: fix off-by-one error in __set_page_owner_handle()
We switch the default handler to be handle_bad_irq() instead of
handle_simple_irq() (which was not correct anyway).
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The driver wants to initialize related registers before IRQ chip will be added.
That's why move it to a corresponding callback. It also fixes the NULL pointer
dereference.
Fixes: 8f86a5b4ad ("gpio: merrifield: Pass irqchip when adding gpiochip")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The driver wants to initialize related registers before IRQ chip will be added.
That's why move it to a corresponding callback. It also fixes the NULL pointer
dereference.
Fixes: 7b1e889436 ("gpio: lynxpoint: Pass irqchip when adding gpiochip")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The driver wants to initialize related registers before IRQ chip will be added.
That's why move it to a corresponding callback. It also fixes the NULL pointer
dereference.
Fixes: 8069e69a97 ("gpio: intel-mid: Pass irqchip when adding gpiochip")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
After changing the drivers to use GPIO core to add an IRQ chip
it appears that some of them requires a hardware initialization
before adding the IRQ chip.
Add an optional callback ->init_hw() to allow that drivers
to initialize hardware if needed.
This change is a part of the fix NULL pointer dereference
brought to the several drivers recently.
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
During conversion to internal IRQ chip initialization the commit
8f86a5b4ad ("gpio: merrifield: Pass irqchip when adding gpiochip")
lost the irq_base assignment.
drivers/gpio/gpio-merrifield.c: In function ‘mrfld_gpio_probe’:
drivers/gpio/gpio-merrifield.c:405:17: warning: variable ‘irq_base’ set but not used [-Wunused-but-set-variable]
Assign the girq->first to it.
Fixes: 8f86a5b4ad ("gpio: merrifield: Pass irqchip when adding gpiochip")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Custom outs*/ins* implementations are long gone from the xtensa port,
remove matching EXPORT_SYMBOLs.
This fixes the following build warnings issued by modpost since commit
15bfc2348d ("modpost: check for static EXPORT_SYMBOL* functions"):
WARNING: "insb" [vmlinux] is a static EXPORT_SYMBOL
WARNING: "insw" [vmlinux] is a static EXPORT_SYMBOL
WARNING: "insl" [vmlinux] is a static EXPORT_SYMBOL
WARNING: "outsb" [vmlinux] is a static EXPORT_SYMBOL
WARNING: "outsw" [vmlinux] is a static EXPORT_SYMBOL
WARNING: "outsl" [vmlinux] is a static EXPORT_SYMBOL
Cc: stable@vger.kernel.org
Fixes: d38efc1f15 ("xtensa: adopt generic io routines")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Mmap /dev/dax more than once, then read the poison location using
address from one of the mappings. The other mappings due to not having
the page mapped in will cause SIGKILLs delivered to the process.
SIGKILL succeeds over SIGBUS, so user process loses the opportunity to
handle the UE.
Although one may add MAP_POPULATE to mmap(2) to work around the issue,
MAP_POPULATE makes mapping 128GB of pmem several magnitudes slower, so
isn't always an option.
Details -
ndctl inject-error --block=10 --count=1 namespace6.0
./read_poison -x dax6.0 -o 5120 -m 2
mmaped address 0x7f5bb6600000
mmaped address 0x7f3cf3600000
doing local read at address 0x7f3cf3601400
Killed
Console messages in instrumented kernel -
mce: Uncorrected hardware memory error in user-access at edbe201400
Memory failure: tk->addr = 7f5bb6601000
Memory failure: address edbe201: call dev_pagemap_mapping_shift
dev_pagemap_mapping_shift: page edbe201: no PUD
Memory failure: tk->size_shift == 0
Memory failure: Unable to find user space address edbe201 in read_poison
Memory failure: tk->addr = 7f3cf3601000
Memory failure: address edbe201: call dev_pagemap_mapping_shift
Memory failure: tk->size_shift = 21
Memory failure: 0xedbe201: forcibly killing read_poison:22434 because of failure to unmap corrupted page
=> to deliver SIGKILL
Memory failure: 0xedbe201: Killing read_poison:22434 due to hardware memory corruption
=> to deliver SIGBUS
Link: http://lkml.kernel.org/r/1565112345-28754-3-git-send-email-jane.chu@oracle.com
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Suggested-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix kernel-doc warning in mm/slab.c:
mm/slab.c:4215: warning: Function parameter or member 'objp' not described in '__ksize'
Also add Return: documentation section for this function.
Link: http://lkml.kernel.org/r/68c9fd7d-f09e-d376-e292-c7b2bdf1774d@infradead.org
Fixes: 10d1f8cb39 ("mm/slab: refactor common ksize KASAN logic into slab_common.c")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix kernel-doc warning in <linux/bitmap.h>:
include/linux/bitmap.h:341: warning: Function parameter or member 'nbits' not described in 'bitmap_or_equal'
Also fix small typo (bitnaps).
Link: http://lkml.kernel.org/r/0729ea7a-2c0d-b2c5-7dd3-3629ee0803e2@infradead.org
Fixes: b9fa6442f7 ("cpumask: Implement cpumask_or_equal()")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix kernel-doc warning in fs/libfs.c:
fs/libfs.c:496: warning: Excess function parameter 'available' description in 'simple_write_end'
Link: http://lkml.kernel.org/r/5fc9d70b-e377-0ec9-066a-970d49579041@infradead.org
Fixes: ad2a722f19 ("libfs: Open code simple_commit_write into only user")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Boaz Harrosh <boazh@netapp.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix kernel-doc warning in fs/direct-io.c:
fs/direct-io.c:258: warning: Excess function parameter 'offset' description in 'dio_complete'
Also, don't mark this function as having kernel-doc notation since it is
not exported.
Link: http://lkml.kernel.org/r/97908511-4328-4a56-17fe-f43a1d7aa470@infradead.org
Fixes: 6d544bb4d9 ("dio: centralize completion in dio_complete()")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Zach Brown <zab@zabbo.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Florian and Dave reported [1] a NULL pointer dereference in
__reset_isolation_pfn(). While the exact cause is unclear, staring at
the code revealed two bugs, which might be related.
One bug is that if zone starts in the middle of pageblock, block_page
might correspond to different pfn than block_pfn, and then the
pfn_valid_within() checks will check different pfn's than those accessed
via struct page. This might result in acessing an unitialized page in
CONFIG_HOLES_IN_ZONE configs.
The other bug is that end_page refers to the first page of next
pageblock and not last page of current pageblock. The online and valid
check is then wrong and with sections, the while (page < end_page) loop
might wander off actual struct page arrays.
[1] https://lore.kernel.org/linux-xfs/87o8z1fvqu.fsf@mid.deneb.enyo.de/
Link: http://lkml.kernel.org/r/20191008152915.24704-1-vbabka@suse.cz
Fixes: 6b0868c820 ("mm/compaction.c: correct zone boundary handling when resetting pageblock skip hints")
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Florian Weimer <fw@deneb.enyo.de>
Reported-by: Dave Chinner <david@fromorbit.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit b39d0ee263 ("mm, page_alloc: avoid expensive reclaim when
compaction may not succeed") has chnaged the allocator to bail out from
the allocator early to prevent from a potentially excessive memory
reclaim. __GFP_RETRY_MAYFAIL is designed to retry the allocation,
reclaim and compaction loop as long as there is a reasonable chance to
make forward progress. Neither COMPACT_SKIPPED nor COMPACT_DEFERRED at
the INIT_COMPACT_PRIORITY compaction attempt gives this feedback.
The most obvious affected subsystem is hugetlbfs which allocates huge
pages based on an admin request (or via admin configured overcommit). I
have done a simple test which tries to allocate half of the memory for
hugetlb pages while the memory is full of a clean page cache. This is
not an unusual situation because we try to cache as much of the memory
as possible and sysctl/sysfs interface to allocate huge pages is there
for flexibility to allocate hugetlb pages at any time.
System has 1GB of RAM and we are requesting 515MB worth of hugetlb pages
after the memory is prefilled by a clean page cache:
root@test1:~# cat hugetlb_test.sh
set -x
echo 0 > /proc/sys/vm/nr_hugepages
echo 3 > /proc/sys/vm/drop_caches
echo 1 > /proc/sys/vm/compact_memory
dd if=/mnt/data/file-1G of=/dev/null bs=$((4<<10))
TS=$(date +%s)
echo 256 > /proc/sys/vm/nr_hugepages
cat /proc/sys/vm/nr_hugepages
The results for 2 consecutive runs on clean 5.3
root@test1:~# sh hugetlb_test.sh
+ echo 0
+ echo 3
+ echo 1
+ dd if=/mnt/data/file-1G of=/dev/null bs=4096
262144+0 records in
262144+0 records out
1073741824 bytes (1.1 GB) copied, 21.0694 s, 51.0 MB/s
+ date +%s
+ TS=1569905284
+ echo 256
+ cat /proc/sys/vm/nr_hugepages
256
root@test1:~# sh hugetlb_test.sh
+ echo 0
+ echo 3
+ echo 1
+ dd if=/mnt/data/file-1G of=/dev/null bs=4096
262144+0 records in
262144+0 records out
1073741824 bytes (1.1 GB) copied, 21.7548 s, 49.4 MB/s
+ date +%s
+ TS=1569905311
+ echo 256
+ cat /proc/sys/vm/nr_hugepages
256
Now with b39d0ee263 applied
root@test1:~# sh hugetlb_test.sh
+ echo 0
+ echo 3
+ echo 1
+ dd if=/mnt/data/file-1G of=/dev/null bs=4096
262144+0 records in
262144+0 records out
1073741824 bytes (1.1 GB) copied, 20.1815 s, 53.2 MB/s
+ date +%s
+ TS=1569905516
+ echo 256
+ cat /proc/sys/vm/nr_hugepages
11
root@test1:~# sh hugetlb_test.sh
+ echo 0
+ echo 3
+ echo 1
+ dd if=/mnt/data/file-1G of=/dev/null bs=4096
262144+0 records in
262144+0 records out
1073741824 bytes (1.1 GB) copied, 21.9485 s, 48.9 MB/s
+ date +%s
+ TS=1569905541
+ echo 256
+ cat /proc/sys/vm/nr_hugepages
12
The success rate went down by factor of 20!
Although hugetlb allocation requests might fail and it is reasonable to
expect them to under extremely fragmented memory or when the memory is
under a heavy pressure but the above situation is not that case.
Fix the regression by reverting back to the previous behavior for
__GFP_RETRY_MAYFAIL requests and disable the beail out heuristic for
those requests.
Mike said:
: hugetlbfs allocations are commonly done via sysctl/sysfs shortly after
: boot where this may not be as much of an issue. However, I am aware of at
: least three use cases where allocations are made after the system has been
: up and running for quite some time:
:
: - DB reconfiguration. If sysctl/sysfs fails to get required number of
: huge pages, system is rebooted to perform allocation after boot.
:
: - VM provisioning. If unable get required number of huge pages, fall
: back to base pages.
:
: - An application that does not preallocate pool, but rather allocates
: pages at fault time for optimal NUMA locality.
:
: In all cases, I would expect b39d0ee263 to cause regressions and
: noticable behavior changes.
:
: My quick/limited testing in
: https://lkml.kernel.org/r/3468b605-a3a9-6978-9699-57c52a90bd7e@oracle.com
: was insufficient. It was also mentioned that if something like
: b39d0ee263 went forward, I would like exemptions for __GFP_RETRY_MAYFAIL
: requests as in this patch.
[mhocko@suse.com: reworded changelog]
Link: http://lkml.kernel.org/r/20191007075548.12456-1-mhocko@kernel.org
Fixes: b39d0ee263 ("mm, page_alloc: avoid expensive reclaim when compaction may not succeed")
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make sure allocations from kmem_cache_alloc_bulk() and
kmem_cache_free_bulk() are properly initialized.
Link: http://lkml.kernel.org/r/20191007091605.30530-2-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Thibaut Sautereau <thibaut@sautereau.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds