Changes in 4.19.143
powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()
gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY
net: Fix potential wrong skb->protocol in skb_vlan_untag()
net: qrtr: fix usage of idr in port assignment to socket
net/smc: Prevent kernel-infoleak in __smc_diag_dump()
tipc: fix uninit skb->data in tipc_nl_compat_dumpit()
net: ena: Make missed_tx stat incremental
ipvlan: fix device features
ALSA: pci: delete repeated words in comments
ASoC: img: Fix a reference count leak in img_i2s_in_set_fmt
ASoC: img-parallel-out: Fix a reference count leak
ASoC: tegra: Fix reference count leaks.
mfd: intel-lpss: Add Intel Emmitsburg PCH PCI IDs
arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep
powerpc/xive: Ignore kmemleak false positives
media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq()
blktrace: ensure our debugfs dir exists
scsi: target: tcmu: Fix crash on ARM during cmd completion
iommu/iova: Don't BUG on invalid PFNs
drm/amdkfd: Fix reference count leaks.
drm/radeon: fix multiple reference count leak
drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms
drm/amd/display: fix ref count leak in amdgpu_drm_ioctl
drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config
drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails
scsi: lpfc: Fix shost refcount mismatch when deleting vport
xfs: Don't allow logging of XFS_ISTALE inodes
selftests/powerpc: Purge extra count_pmc() calls of ebb selftests
f2fs: fix error path in do_recover_data()
omapfb: fix multiple reference count leaks due to pm_runtime_get_sync
PCI: Fix pci_create_slot() reference count leak
ARM: dts: ls1021a: output PPS signal on FIPER2
rtlwifi: rtl8192cu: Prevent leaking urb
mips/vdso: Fix resource leaks in genvdso.c
cec-api: prevent leaking memory through hole in structure
HID: quirks: add NOGET quirk for Logitech GROUP
f2fs: fix use-after-free issue
drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open
drm/nouveau: fix reference count leak in nv50_disp_atomic_commit
drm/nouveau: Fix reference count leak in nouveau_connector_detect
locking/lockdep: Fix overflow in presentation of average lock-time
btrfs: file: reserve qgroup space after the hole punch range is locked
scsi: iscsi: Do not put host in iscsi_set_flashnode_param()
ceph: fix potential mdsc use-after-free crash
scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del()
EDAC/ie31200: Fallback if host bridge device is already initialized
KVM: arm64: Fix symbol dependency in __hyp_call_panic_nvhe
powerpc/spufs: add CONFIG_COREDUMP dependency
USB: sisusbvga: Fix a potential UB casued by left shifting a negative value
efi: provide empty efi_enter_virtual_mode implementation
Revert "ath10k: fix DMA related firmware crashes on multiple devices"
media: gpio-ir-tx: improve precision of transmitted signal due to scheduling
drm/msm/adreno: fix updating ring fence
nvme-fc: Fix wrong return value in __nvme_fc_init_request()
null_blk: fix passing of REQ_FUA flag in null_handle_rq
i2c: rcar: in slave mode, clear NACK earlier
usb: gadget: f_tcm: Fix some resource leaks in some error paths
jbd2: make sure jh have b_transaction set in refile/unfile_buffer
ext4: don't BUG on inconsistent journal feature
ext4: handle read only external journal device
jbd2: abort journal if free a async write error metadata buffer
ext4: handle option set by mount flags correctly
ext4: handle error of ext4_setup_system_zone() on remount
ext4: correctly restore system zone info when remount fails
fs: prevent BUG_ON in submit_bh_wbc()
spi: stm32: fix stm32_spi_prepare_mbr in case of odd clk_rate
s390/cio: add cond_resched() in the slow_eval_known_fn() loop
ASoC: wm8994: Avoid attempts to read unreadable registers
scsi: fcoe: Fix I/O path allocation
scsi: ufs: Fix possible infinite loop in ufshcd_hold
scsi: ufs: Improve interrupt handling for shared interrupts
scsi: ufs: Clean up completed request without interrupt notification
scsi: qla2xxx: Check if FW supports MQ before enabling
scsi: qla2xxx: Fix null pointer access during disconnect from subsystem
Revert "scsi: qla2xxx: Fix crash on qla2x00_mailbox_command"
macvlan: validate setting of multiple remote source MAC addresses
net: gianfar: Add of_node_put() before goto statement
powerpc/perf: Fix soft lockups due to missed interrupt accounting
block: loop: set discard granularity and alignment for block device backed loop
HID: i2c-hid: Always sleep 60ms after I2C_HID_PWR_ON commands
blk-mq: order adding requests to hctx->dispatch and checking SCHED_RESTART
btrfs: reset compression level for lzo on remount
btrfs: fix space cache memory leak after transaction abort
fbcon: prevent user font height or width change from causing potential out-of-bounds access
USB: lvtest: return proper error code in probe
vt: defer kfree() of vc_screenbuf in vc_do_resize()
vt_ioctl: change VT_RESIZEX ioctl to check for error return from vc_resize()
serial: samsung: Removes the IRQ not found warning
serial: pl011: Fix oops on -EPROBE_DEFER
serial: pl011: Don't leak amba_ports entry on driver register error
serial: 8250_exar: Fix number of ports for Commtech PCIe cards
serial: 8250: change lock order in serial8250_do_startup()
writeback: Protect inode->i_io_list with inode->i_lock
writeback: Avoid skipping inode writeback
writeback: Fix sync livelock due to b_dirty_time processing
XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.
usb: host: xhci: fix ep context print mismatch in debugfs
xhci: Do warm-reset when both CAS and XDEV_RESUME are set
xhci: Always restore EP_SOFT_CLEAR_TOGGLE even if ep reset failed
PM: sleep: core: Fix the handling of pending runtime resume requests
device property: Fix the secondary firmware node handling in set_primary_fwnode()
genirq/matrix: Deal with the sillyness of for_each_cpu() on UP
irqchip/stm32-exti: Avoid losing interrupts due to clearing pending bits by mistake
drm/amdgpu: Fix buffer overflow in INFO ioctl
drm/amd/pm: correct Vega10 swctf limit setting
drm/amd/pm: correct Vega12 swctf limit setting
USB: yurex: Fix bad gfp argument
usb: uas: Add quirk for PNY Pro Elite
USB: quirks: Add no-lpm quirk for another Raydium touchscreen
USB: quirks: Ignore duplicate endpoint on Sound Devices MixPre-D
USB: Ignore UAS for JMicron JMS567 ATA/ATAPI Bridge
usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe()
USB: gadget: u_f: add overflow checks to VLA macros
USB: gadget: f_ncm: add bounds checks to ncm_unwrap_ntb()
USB: gadget: u_f: Unbreak offset calculation in VLAs
USB: cdc-acm: rework notification_buffer resizing
usb: storage: Add unusual_uas entry for Sony PSZ drives
btrfs: check the right error variable in btrfs_del_dir_entries_in_log
usb: dwc3: gadget: Don't setup more than requested
usb: dwc3: gadget: Fix handling ZLP
usb: dwc3: gadget: Handle ZLP for sg requests
tpm: Unify the mismatching TPM space buffer sizes
HID: hiddev: Fix slab-out-of-bounds write in hiddev_ioctl_usage()
ALSA: usb-audio: Update documentation comment for MS2109 quirk
Linux 4.19.143
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8b6e29eda77bd69df30132842cf28019c8e7c1a3
[ Upstream commit 6c4e79d99e ]
The size of the buffers for storing context's and sessions can vary from
arch to arch as PAGE_SIZE can be anything between 4 kB and 256 kB (the
maximum for PPC64). Define a fixed buffer size set to 16 kB. This should be
enough for most use with three handles (that is how many we allow at the
moment). Parametrize the buffer size while doing this, so that it is easier
to revisit this later on if required.
Cc: stable@vger.kernel.org
Reported-by: Stefan Berger <stefanb@linux.ibm.com>
Fixes: 745b361e98 ("tpm: infrastructure for TPM spaces")
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d2ee3ff79e ]
The usb_request->zero doesn't apply for isoc. Also, if we prepare a
0-length (ZLP) TRB for the OUT direction, we need to prepare an extra
TRB to pad up to the MPS alignment. Use the same bounce buffer for the
ZLP TRB and the extra pad TRB.
Cc: <stable@vger.kernel.org> # v4.5+
Fixes: d6e5a549cc ("usb: dwc3: simplify ZLP handling")
Fixes: 04c03d10e5 ("usb: dwc3: gadget: handle request->zero")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 5d187c0454 ]
The SG list may be set up with entry size more than the requested
length. Check the usb_request->length and make sure that we don't setup
the TRBs to send/receive more than requested. This case may occur when
the SG entry is allocated up to a certain minimum size, but the request
length is less than that. It can also occur when the request is reused
for a different request length.
Cc: <stable@vger.kernel.org> # v4.18+
Fixes: a31e63b608 ("usb: dwc3: gadget: Correct handling of scattergather lists")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit fb2fecbad5 ]
With my new locking code dbench is so much faster that I tripped over a
transaction abort from ENOSPC. This turned out to be because
btrfs_del_dir_entries_in_log was checking for ret == -ENOSPC, but this
function sets err on error, and returns err. So instead of properly
marking the inode as needing a full commit, we were returning -ENOSPC
and aborting in __btrfs_unlink_inode. Fix this by checking the proper
variable so that we return the correct thing in the case of ENOSPC.
The ENOENT needs to be checked, because btrfs_lookup_dir_item_index()
can return -ENOENT if the dir item isn't in the tree log (which would
happen if we hadn't fsync'ed this guy). We actually handle that case in
__btrfs_unlink_inode, so it's an expected error to get back.
Fixes: 4a500fd178 ("Btrfs: Metadata ENOSPC handling for tree log")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add note and comment about ENOENT ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit f4b9d8a582 upstream.
Clang static analysis reports this error
cdc-acm.c:409:3: warning: Use of memory after it is freed
acm_process_notification(acm, (unsigned char *)dr);
There are three problems, the first one is that dr is not reset
The variable dr is set with
if (acm->nb_index)
dr = (struct usb_cdc_notification *)acm->notification_buffer;
But if the notification_buffer is too small it is resized with
if (acm->nb_size) {
kfree(acm->notification_buffer);
acm->nb_size = 0;
}
alloc_size = roundup_pow_of_two(expected_size);
/*
* kmalloc ensures a valid notification_buffer after a
* use of kfree in case the previous allocation was too
* small. Final freeing is done on disconnect.
*/
acm->notification_buffer =
kmalloc(alloc_size, GFP_ATOMIC);
dr should point to the new acm->notification_buffer.
The second problem is any data in the notification_buffer is lost
when the pointer is freed. In the normal case, the current data
is accumulated in the notification_buffer here.
memcpy(&acm->notification_buffer[acm->nb_index],
urb->transfer_buffer, copy_size);
When a resize happens, anything before
notification_buffer[acm->nb_index] is garbage.
The third problem is the acm->nb_index is not reset on a
resizing buffer error.
So switch resizing to using krealloc and reassign dr and
reset nb_index.
Fixes: ea2583529c ("cdc-acm: reassemble fragmented notifications")
Signed-off-by: Tom Rix <trix@redhat.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20200801152154.20683-1-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2b74b0a04d upstream.
Some values extracted by ncm_unwrap_ntb() could possibly lead to several
different out of bounds reads of memory. Specifically the values passed
to netdev_alloc_skb_ip_align() need to be checked so that memory is not
overflowed.
Resolve this by applying bounds checking to a number of different
indexes and lengths of the structure parsing logic.
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Brooke Basile <brookebasile@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b1cd1b65af upstream.
size can potentially hold an overflowed value if its assigned expression
is left unchecked, leading to a smaller than needed allocation when
vla_group_size() is used by callers to allocate memory.
To fix this, add a test for saturation before declaring variables and an
overflow check to (n) * sizeof(type).
If the expression results in overflow, vla_group_size() will return SIZE_MAX.
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Brooke Basile <brookebasile@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 068834a277 upstream.
The Sound Devices MixPre-D audio card suffers from the same defect
as the Sound Devices USBPre2: an endpoint shared between a normal
audio interface and a vendor-specific interface, in violation of the
USB spec. Since the USB core now treats duplicated endpoints as bugs
and ignores them, the audio endpoint isn't available and the card
can't be used for audio capture.
Along the same lines as commit bdd1b147b8 ("USB: quirks: blacklist
duplicate ep on Sound Devices USBPre2"), this patch adds a quirks
entry saying to ignore ep5in for interface 1, leaving it available for
use with standard audio interface 2.
Reported-and-tested-by: Jean-Christophe Barnoud <jcbarnoud@gmail.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Fixes: 3e4f8e21c4 ("USB: core: fix check for duplicate endpoints")
Link: https://lore.kernel.org/r/20200826194624.GA412633@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e579076ac0 upstream.
In the current code, when the eoi callback of the exti clears the pending
bit of the current interrupt, it will first read the values of fpr and
rpr, then logically OR the corresponding bit of the interrupt number,
and finally write back to fpr and rpr.
We found through experiments that if two exti interrupts,
we call them int1/int2, arrive almost at the same time. in our scenario,
the time difference is 30 microseconds, assuming int1 is triggered first.
there will be an extreme scenario: both int's pending bit are set to 1,
the irq handle of int1 is executed first, and eoi handle is then executed,
at this moment, all pending bits are cleared, but the int 2 has not
finally been reported to the cpu yet, which eventually lost int2.
According to stm32's TRM description about rpr and fpr: Writing a 1 to this
bit will trigger a rising edge event on event x, Writing 0 has no
effect.
Therefore, when clearing the pending bit, we only need to clear the
pending bit of the irq.
Fixes: 927abfc446 ("irqchip/stm32: Add stm32mp1 support with hierarchy domain")
Signed-off-by: qiuguorui1 <qiuguorui1@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org # v4.18+
Link: https://lore.kernel.org/r/20200820031629.15582-1-qiuguorui1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 784a083037 upstream.
Most of the CPU mask operations behave the same way, but for_each_cpu() and
it's variants ignore the cpumask argument and claim that CPU0 is always in
the mask. This is historical, inconsistent and annoying behaviour.
The matrix allocator uses for_each_cpu() and can be called on UP with an
empty cpumask. The calling code does not expect that this succeeds but
until commit e027fffff7 ("x86/irq: Unbreak interrupt affinity setting")
this went unnoticed. That commit added a WARN_ON() to catch cases which
move an interrupt from one vector to another on the same CPU. The warning
triggers on UP.
Add a check for the cpumask being empty to prevent this.
Fixes: 2f75d9e1c9 ("genirq: Implement bitmap matrix allocator")
Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c15e1bdda4 upstream.
When the primary firmware node pointer is removed from a
device (set to NULL) the secondary firmware node pointer,
when it exists, is made the primary node for the device.
However, the secondary firmware node pointer of the original
primary firmware node is never cleared (set to NULL).
To avoid situation where the secondary firmware node pointer
is pointing to a non-existing object, clearing it properly
when the primary node is removed from a device in
set_primary_fwnode().
Fixes: 97badf873a ("device property: Make it possible to use secondary firmware nodes")
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e3eb6e8fba upstream.
It has been reported that system-wide suspend may be aborted in the
absence of any wakeup events due to unforseen interactions of it with
the runtume PM framework.
One failing scenario is when there are multiple devices sharing an
ACPI power resource and runtime-resume needs to be carried out for
one of them during system-wide suspend (for example, because it needs
to be reconfigured before the whole system goes to sleep). In that
case, the runtime-resume of that device involves turning the ACPI
power resource "on" which in turn causes runtime-resume requests
to be queued up for all of the other devices sharing it. Those
requests go to the runtime PM workqueue which is frozen during
system-wide suspend, so they are not actually taken care of until
the resume of the whole system, but the pm_runtime_barrier()
call in __device_suspend() sees them and triggers system wakeup
events for them which then cause the system-wide suspend to be
aborted if wakeup source objects are in active use.
Of course, the logic that leads to triggering those wakeup events is
questionable in the first place, because clearly there are cases in
which a pending runtime resume request for a device is not connected
to any real wakeup events in any way (like the one above). Moreover,
it is racy, because the device may be resuming already by the time
the pm_runtime_barrier() runs and so if the driver doesn't take care
of signaling the wakeup event as appropriate, it will be lost.
However, if the driver does take care of that, the extra
pm_wakeup_event() call in the core is redundant.
Accordingly, drop the conditional pm_wakeup_event() call fron
__device_suspend() and make the latter call pm_runtime_barrier()
alone. Also modify the comment next to that call to reflect the new
code and extend it to mention the need to avoid unwanted interactions
between runtime PM and system-wide device suspend callbacks.
Fixes: 1e2ef05bb8 ("PM: Limit race conditions between runtime PM and system sleep (v2)")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Utkarsh H Patel <utkarsh.h.patel@intel.com>
Tested-by: Utkarsh H Patel <utkarsh.h.patel@intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f1ec7ae6c9 upstream.
Some device drivers call libusb_clear_halt when target ep queue
is not empty. (eg. spice client connected to qemu for usb redir)
Before commit f5249461b5 ("xhci: Clear the host side toggle
manually when endpoint is soft reset"), that works well.
But now, we got the error log:
EP not empty, refuse reset
xhci_endpoint_reset failed and left ep_state's EP_SOFT_CLEAR_TOGGLE
bit still set
So all the subsequent urb sumbits to the ep will fail with the
warn log:
Can't enqueue URB while manually clearing toggle
We need to clear ep_state EP_SOFT_CLEAR_TOGGLE bit after
xhci_endpoint_reset, even if it failed.
Fixes: f5249461b5 ("xhci: Clear the host side toggle manually when endpoint is soft reset")
Cc: stable <stable@vger.kernel.org> # v4.17+
Signed-off-by: Ding Hui <dinghui@sangfor.com.cn>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200821091549.20556-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 904df64a5f upstream.
Sometimes re-plugging a USB device during system sleep renders the device
useless:
[ 173.418345] xhci_hcd 0000:00:14.0: Get port status 2-4 read: 0x14203e2, return 0x10262
...
[ 176.496485] usb 2-4: Waited 2000ms for CONNECT
[ 176.496781] usb usb2-port4: status 0000.0262 after resume, -19
[ 176.497103] usb 2-4: can't resume, status -19
[ 176.497438] usb usb2-port4: logical disconnect
Because PLS equals to XDEV_RESUME, xHCI driver reports U3 to usbcore,
despite of CAS bit is flagged.
So proritize CAS over XDEV_RESUME to let usbcore handle warm-reset for
the port.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200821091549.20556-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c330fb1ddc upstream.
handler data is meant for interrupt handlers and not for storing irq chip
specific information as some devices require handler data to store internal
per interrupt information, e.g. pinctrl/GPIO chained interrupt handlers.
This obviously creates a conflict of interests and crashes the machine
because the XEN pointer is overwritten by the driver pointer.
As the XEN data is not handler specific it should be stored in
irqdesc::irq_data::chip_data instead.
A simple sed s/irq_[sg]et_handler_data/irq_[sg]et_chip_data/ cures that.
Cc: stable@vger.kernel.org
Reported-by: Roman Shaposhnik <roman@zededa.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Roman Shaposhnik <roman@zededa.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/87lfi2yckt.fsf@nanos.tec.linutronix.de
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f9cae926f3 upstream.
When we are processing writeback for sync(2), move_expired_inodes()
didn't set any inode expiry value (older_than_this). This can result in
writeback never completing if there's steady stream of inodes added to
b_dirty_time list as writeback rechecks dirty lists after each writeback
round whether there's more work to be done. Fix the problem by using
sync(2) start time is inode expiry value when processing b_dirty_time
list similarly as for ordinarily dirtied inodes. This requires some
refactoring of older_than_this handling which simplifies the code
noticeably as a bonus.
Fixes: 0ae45f63d4 ("vfs: add support for a lazytime mount option")
CC: stable@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5afced3bf2 upstream.
Inode's i_io_list list head is used to attach inode to several different
lists - wb->{b_dirty, b_dirty_time, b_io, b_more_io}. When flush worker
prepares a list of inodes to writeback e.g. for sync(2), it moves inodes
to b_io list. Thus it is critical for sync(2) data integrity guarantees
that inode is not requeued to any other writeback list when inode is
queued for processing by flush worker. That's the reason why
writeback_single_inode() does not touch i_io_list (unless the inode is
completely clean) and why __mark_inode_dirty() does not touch i_io_list
if I_SYNC flag is set.
However there are two flaws in the current logic:
1) When inode has only I_DIRTY_TIME set but it is already queued in b_io
list due to sync(2), concurrent __mark_inode_dirty(inode, I_DIRTY_SYNC)
can still move inode back to b_dirty list resulting in skipping
writeback of inode time stamps during sync(2).
2) When inode is on b_dirty_time list and writeback_single_inode() races
with __mark_inode_dirty() like:
writeback_single_inode() __mark_inode_dirty(inode, I_DIRTY_PAGES)
inode->i_state |= I_SYNC
__writeback_single_inode()
inode->i_state |= I_DIRTY_PAGES;
if (inode->i_state & I_SYNC)
bail
if (!(inode->i_state & I_DIRTY_ALL))
- not true so nothing done
We end up with I_DIRTY_PAGES inode on b_dirty_time list and thus
standard background writeback will not writeback this inode leading to
possible dirty throttling stalls etc. (thanks to Martijn Coenen for this
analysis).
Fix these problems by tracking whether inode is queued in b_io or
b_more_io lists in a new I_SYNC_QUEUED flag. When this flag is set, we
know flush worker has queued inode and we should not touch i_io_list.
On the other hand we also know that once flush worker is done with the
inode it will requeue the inode to appropriate dirty list. When
I_SYNC_QUEUED is not set, __mark_inode_dirty() can (and must) move inode
to appropriate dirty list.
Reported-by: Martijn Coenen <maco@android.com>
Reviewed-by: Martijn Coenen <maco@android.com>
Tested-by: Martijn Coenen <maco@android.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixes: 0ae45f63d4 ("vfs: add support for a lazytime mount option")
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b35250c081 upstream.
Currently, operations on inode->i_io_list are protected by
wb->list_lock. In the following patches we'll need to maintain
consistency between inode->i_state and inode->i_io_list so change the
code so that inode->i_lock protects also all inode's i_io_list handling.
Reviewed-by: Martijn Coenen <maco@android.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
CC: stable@vger.kernel.org # Prerequisite for "writeback: Avoid skipping inode writeback"
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c6b9e95dde upstream.
The following in 8250_exar.c line 589 is used to determine the number
of ports for each Exar board:
nr_ports = board->num_ports ? board->num_ports : pcidev->device & 0x0f;
If the number of ports a card has is not explicitly specified, it defaults
to the rightmost 4 bits of the PCI device ID. This is prone to error since
not all PCI device IDs contain a number which corresponds to the number of
ports that card provides.
This particular case involves COMMTECH_4222PCIE, COMMTECH_4224PCIE and
COMMTECH_4228PCIE cards with device IDs 0x0022, 0x0020 and 0x0021.
Currently the multiport cards receive 2, 0 and 1 port instead of 2, 4 and
8 ports respectively.
To fix this, each Commtech Fastcom PCIe card is given a struct where the
number of ports is explicitly specified. This ensures 'board->num_ports'
is used instead of the default 'pcidev->device & 0x0f'.
Fixes: d0aeaa83f0 ("serial: exar: split out the exar code from 8250_pci")
Signed-off-by: Valmer Huhn <valmer.huhn@concurrent-rt.com>
Tested-by: Valmer Huhn <valmer.huhn@concurrent-rt.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200813165255.GC345440@icarus.concurrent-rt.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 89efbe70b2 upstream.
pl011_probe() calls pl011_setup_port() to reserve an amba_ports[] entry,
then calls pl011_register_port() to register the uart driver with the
tty layer.
If registration of the uart driver fails, the amba_ports[] entry is not
released. If this happens 14 times (value of UART_NR macro), then all
amba_ports[] entries will have been leaked and driver probing is no
longer possible. (To be fair, that can only happen if the DeviceTree
doesn't contain alias IDs since they cause the same entry to be used for
a given port.) Fix it.
Fixes: ef2889f7ff ("serial: pl011: Move uart_register_driver call to device")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v3.15+
Cc: Tushar Behera <tushar.behera@linaro.org>
Link: https://lore.kernel.org/r/138f8c15afb2f184d8102583f8301575566064a6.1597316167.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 27afac93e3 upstream.
If probing of a pl011 gets deferred until after free_initmem(), an oops
ensues because pl011_console_match() is called which has been freed.
Fix by removing the __init attribute from the function and those it
calls.
Commit 10879ae5f1 ("serial: pl011: add console matching function")
introduced pl011_console_match() not just for early consoles but
regular preferred consoles, such as those added by acpi_parse_spcr().
Regular consoles may be registered after free_initmem() for various
reasons, one being deferred probing, another being dynamic enablement
of serial ports using a DeviceTree overlay.
Thus, pl011_console_match() must not be declared __init and the
functions it calls mustn't either.
Stack trace for posterity:
Unable to handle kernel paging request at virtual address 80c38b58
Internal error: Oops: 8000000d [#1] PREEMPT SMP ARM
PC is at pl011_console_match+0x0/0xfc
LR is at register_console+0x150/0x468
[<80187004>] (register_console)
[<805a8184>] (uart_add_one_port)
[<805b2b68>] (pl011_register_port)
[<805b3ce4>] (pl011_probe)
[<80569214>] (amba_probe)
[<805ca088>] (really_probe)
[<805ca2ec>] (driver_probe_device)
[<805ca5b0>] (__device_attach_driver)
[<805c8060>] (bus_for_each_drv)
[<805c9dfc>] (__device_attach)
[<805ca630>] (device_initial_probe)
[<805c90a8>] (bus_probe_device)
[<805c95a8>] (deferred_probe_work_func)
Fixes: 10879ae5f1 ("serial: pl011: add console matching function")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v4.10+
Cc: Aleksey Makarov <amakarov@marvell.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Christopher Covington <cov@codeaurora.org>
Link: https://lore.kernel.org/r/f827ff09da55b8c57d316a1b008a137677b58921.1597315557.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8c6c378b0c upstream.
In few older Samsung SoCs like s3c2410, s3c2412
and s3c2440, UART IP is having 2 interrupt lines.
However, in other SoCs like s3c6400, s5pv210,
exynos5433, and exynos4210 UART is having only 1
interrupt line. Due to this, "platform_get_irq(platdev, 1)"
call in the driver gives the following false-positive error:
"IRQ index 1 not found" on newer SoC's.
This patch adds the condition to check for Tx interrupt
only for the those SoC's which have 2 interrupt lines.
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Tamseel Shams <m.shams@samsung.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200810030021.45348-1-m.shams@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bbc37d6e47 upstream.
If a transaction aborts it can cause a memory leak of the pages array of
a block group's io_ctl structure. The following steps explain how that can
happen:
1) Transaction N is committing, currently in state TRANS_STATE_UNBLOCKED
and it's about to start writing out dirty extent buffers;
2) Transaction N + 1 already started and another task, task A, just called
btrfs_commit_transaction() on it;
3) Block group B was dirtied (extents allocated from it) by transaction
N + 1, so when task A calls btrfs_start_dirty_block_groups(), at the
very beginning of the transaction commit, it starts writeback for the
block group's space cache by calling btrfs_write_out_cache(), which
allocates the pages array for the block group's io_ctl with a call to
io_ctl_init(). Block group A is added to the io_list of transaction
N + 1 by btrfs_start_dirty_block_groups();
4) While transaction N's commit is writing out the extent buffers, it gets
an IO error and aborts transaction N, also setting the file system to
RO mode;
5) Task A has already returned from btrfs_start_dirty_block_groups(), is at
btrfs_commit_transaction() and has set transaction N + 1 state to
TRANS_STATE_COMMIT_START. Immediately after that it checks that the
filesystem was turned to RO mode, due to transaction N's abort, and
jumps to the "cleanup_transaction" label. After that we end up at
btrfs_cleanup_one_transaction() which calls btrfs_cleanup_dirty_bgs().
That helper finds block group B in the transaction's io_list but it
never releases the pages array of the block group's io_ctl, resulting in
a memory leak.
In fact at the point when we are at btrfs_cleanup_dirty_bgs(), the pages
array points to pages that were already released by us at
__btrfs_write_out_cache() through the call to io_ctl_drop_pages(). We end
up freeing the pages array only after waiting for the ordered extent to
complete through btrfs_wait_cache_io(), which calls io_ctl_free() to do
that. But in the transaction abort case we don't wait for the space cache's
ordered extent to complete through a call to btrfs_wait_cache_io(), so
that's why we end up with a memory leak - we wait for the ordered extent
to complete indirectly by shutting down the work queues and waiting for
any jobs in them to complete before returning from close_ctree().
We can solve the leak simply by freeing the pages array right after
releasing the pages (with the call to io_ctl_drop_pages()) at
__btrfs_write_out_cache(), since we will never use it anymore after that
and the pages array points to already released pages at that point, which
is currently not a problem since no one will use it after that, but not a
good practice anyway since it can easily lead to use-after-free issues.
So fix this by freeing the pages array right after releasing the pages at
__btrfs_write_out_cache().
This issue can often be reproduced with test case generic/475 from fstests
and kmemleak can detect it and reports it with the following trace:
unreferenced object 0xffff9bbf009fa600 (size 512):
comm "fsstress", pid 38807, jiffies 4298504428 (age 22.028s)
hex dump (first 32 bytes):
00 a0 7c 4d 3d ed ff ff 40 a0 7c 4d 3d ed ff ff ..|M=...@.|M=...
80 a0 7c 4d 3d ed ff ff c0 a0 7c 4d 3d ed ff ff ..|M=.....|M=...
backtrace:
[<00000000f4b5cfe2>] __kmalloc+0x1a8/0x3e0
[<0000000028665e7f>] io_ctl_init+0xa7/0x120 [btrfs]
[<00000000a1f95b2d>] __btrfs_write_out_cache+0x86/0x4a0 [btrfs]
[<00000000207ea1b0>] btrfs_write_out_cache+0x7f/0xf0 [btrfs]
[<00000000af21f534>] btrfs_start_dirty_block_groups+0x27b/0x580 [btrfs]
[<00000000c3c23d44>] btrfs_commit_transaction+0xa6f/0xe70 [btrfs]
[<000000009588930c>] create_subvol+0x581/0x9a0 [btrfs]
[<000000009ef2fd7f>] btrfs_mksubvol+0x3fb/0x4a0 [btrfs]
[<00000000474e5187>] __btrfs_ioctl_snap_create+0x119/0x1a0 [btrfs]
[<00000000708ee349>] btrfs_ioctl_snap_create_v2+0xb0/0xf0 [btrfs]
[<00000000ea60106f>] btrfs_ioctl+0x12c/0x3130 [btrfs]
[<000000005c923d6d>] __x64_sys_ioctl+0x83/0xb0
[<0000000043ace2c9>] do_syscall_64+0x33/0x80
[<00000000904efbce>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
CC: stable@vger.kernel.org # 4.9+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 282dd7d771 upstream.
Currently a user can set mount "-o compress" which will set the
compression algorithm to zlib, and use the default compress level for
zlib (3):
relatime,compress=zlib:3,space_cache
If the user remounts the fs using "-o compress=lzo", then the old
compress_level is used:
relatime,compress=lzo:3,space_cache
But lzo does not expose any tunable compression level. The same happens
if we set any compress argument with different level, also with zstd.
Fix this by resetting the compress_level when compress=lzo is
specified. With the fix applied, lzo is shown without compress level:
relatime,compress=lzo,space_cache
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d7d8535f37 upstream.
SCHED_RESTART code path is relied to re-run queue for dispatch requests
in hctx->dispatch. Meantime the SCHED_RSTART flag is checked when adding
requests to hctx->dispatch.
memory barriers have to be used for ordering the following two pair of OPs:
1) adding requests to hctx->dispatch and checking SCHED_RESTART in
blk_mq_dispatch_rq_list()
2) clearing SCHED_RESTART and checking if there is request in hctx->dispatch
in blk_mq_sched_restart().
Without the added memory barrier, either:
1) blk_mq_sched_restart() may miss requests added to hctx->dispatch meantime
blk_mq_dispatch_rq_list() observes SCHED_RESTART, and not run queue in
dispatch side
or
2) blk_mq_dispatch_rq_list still sees SCHED_RESTART, and not run queue
in dispatch side, meantime checking if there is request in
hctx->dispatch from blk_mq_sched_restart() is missed.
IO hang in ltp/fs_fill test is reported by kernel test robot:
https://lkml.org/lkml/2020/7/26/77
Turns out it is caused by the above out-of-order OPs. And the IO hang
can't be observed any more after applying this patch.
Fixes: bd166ef183 ("blk-mq-sched: add framework for MQ capable IO schedulers")
Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Jeffery <djeffery@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit eef4016243 upstream.
Before this commit i2c_hid_parse() consists of the following steps:
1. Send power on cmd
2. usleep_range(1000, 5000)
3. Send reset cmd
4. Wait for reset to complete (device interrupt, or msleep(100))
5. Send power on cmd
6. Try to read HID descriptor
Notice how there is an usleep_range(1000, 5000) after the first power-on
command, but not after the second power-on command.
Testing has shown that at least on the BMAX Y13 laptop's i2c-hid touchpad,
not having a delay after the second power-on command causes the HID
descriptor to read as all zeros.
In case we hit this on other devices too, the descriptor being all zeros
can be recognized by the following message being logged many, many times:
hid-generic 0018:0911:5288.0002: unknown main item tag 0x0
At the same time as the BMAX Y13's touchpad issue was debugged,
Kai-Heng was working on debugging some issues with Goodix i2c-hid
touchpads. It turns out that these need a delay after a PWR_ON command
too, otherwise they stop working after a suspend/resume cycle.
According to Goodix a delay of minimal 60ms is needed.
Having multiple cases where we need a delay after sending the power-on
command, seems to indicate that we should always sleep after the power-on
command.
This commit fixes the mentioned issues by moving the existing 1ms sleep to
the i2c_hid_set_power() function and changing it to a 60ms sleep.
Cc: stable@vger.kernel.org
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=208247
Reported-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reported-and-tested-by: Andrea Borgia <andrea@borgia.bo.it>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bcb21c8cc9 upstream.
In case of block device backend, if the backend supports write zeros, the
loop device will set queue flag of QUEUE_FLAG_DISCARD. However,
limits.discard_granularity isn't setup, and this way is wrong,
see the following description in Documentation/ABI/testing/sysfs-block:
A discard_granularity of 0 means that the device does not support
discard functionality.
Especially 9b15d109a6 ("block: improve discard bio alignment in
__blkdev_issue_discard()") starts to take q->limits.discard_granularity
for computing max discard sectors. And zero discard granularity may cause
kernel oops, or fail discard request even though the loop queue claims
discard support via QUEUE_FLAG_DISCARD.
Fix the issue by setup discard granularity and alignment.
Fixes: c52abf5630 ("loop: Better discard support for block devices")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Coly Li <colyli@suse.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Xiao Ni <xni@redhat.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Evan Green <evgreen@chromium.org>
Cc: Gwendal Grignou <gwendal@chromium.org>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 17899eaf88 ]
Performance monitor interrupt handler checks if any counter has
overflown and calls record_and_restart() in core-book3s which invokes
perf_event_overflow() to record the sample information. Apart from
creating sample, perf_event_overflow() also does the interrupt and
period checks via perf_event_account_interrupt().
Currently we record information only if the SIAR (Sampled Instruction
Address Register) valid bit is set (using siar_valid() check) and
hence the interrupt check.
But it is possible that we do sampling for some events that are not
generating valid SIAR, and hence there is no chance to disable the
event if interrupts are more than max_samples_per_tick. This leads to
soft lockup.
Fix this by adding perf_event_account_interrupt() in the invalid SIAR
code path for a sampling event. ie if SIAR is invalid, just do
interrupt check and don't record the sample information.
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1596717992-7321-1-git-send-email-atrajeev@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 989e4da042 ]
Every iteration of for_each_available_child_of_node() decrements
reference count of the previous node, however when control
is transferred from the middle of the loop, as in the case of
a return or break or goto, there is no decrement thus ultimately
resulting in a memory leak.
Fix a potential memory leak in gianfar.c by inserting of_node_put()
before the goto statement.
Issue found with Coccinelle.
Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
