An uninitialized gfn_to_hva_cache has ghc->len == 0, which causes
the accessors to croak very loudly. While a BUG_ON is definitely
_too_ loud and a bug on its own, there is indeed an issue of using
the caches in such a way that they could not have been initialized,
because ghc->gpa == 0 might match and thus kvm_gfn_to_hva_cache_init
would not be called.
For the vmcs12_cache, the solution is simply to invoke
kvm_gfn_to_hva_cache_init unconditionally: we already know
that the cache does not match the current VMCS pointer.
For the shadow_vmcs12_cache, there is no similar condition
that checks the VMCS link pointer, so invalidate the cache
on VMXON.
Fixes: cee66664dc ("KVM: nVMX: Use a gfn_to_hva_cache for vmptrld")
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Reported-by: syzbot+7b7db8bb4db6fd5e157b@syzkaller.appspotmail.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Fix constant sign extension affecting TCR_EL2 and preventing
running on ARMv8.7 models due to spurious bits being set
- Fix use of helpers using PSTATE early on exit by always sampling
it as soon as the exit takes place
- Move pkvm's 32bit handling into a common helper
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Merge tag 'kvmarm-fixes-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.16, take #2
- Fix constant sign extension affecting TCR_EL2 and preventing
running on ARMv8.7 models due to spurious bits being set
- Fix use of helpers using PSTATE early on exit by always sampling
it as soon as the exit takes place
- Move pkvm's 32bit handling into a common helper
- Fix incorrect KVM_MAX_VCPUS value
- Unmap stage2 mapping when deleting/moving a memslot
(This was due to empty kvm_arch_flush_shadow_memslot())
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Merge tag 'kvm-riscv-fixes-5.16-1' of https://github.com/kvm-riscv/linux into HEAD
KVM/riscv fixes for 5.16, take #1
- Fix incorrect KVM_MAX_VCPUS value
- Unmap stage2 mapping when deleting/moving a memslot
(This was due to empty kvm_arch_flush_shadow_memslot())
Jakub Kicinski says:
====================
tls: splice_read fixes
As I work my way to unlocked and zero-copy TLS Rx the obvious bugs
in the splice_read implementation get harder and harder to ignore.
This is to say the fixes here are discovered by code inspection,
I'm not aware of anyone actually using splice_read.
====================
Link: https://lore.kernel.org/r/20211124232557.2039757-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Previous patch fixes overriding callbacks incorrectly. Triggering
the crash in sendpage_locked would be more spectacular but it's
hard to get to, so take the easier path of proving this is broken
and call getname. We're currently getting IPv4 socket info on an
IPv6 socket.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We replace proto_ops whenever TLS is configured for RX. But our
replacement also overrides sendpage_locked, which will crash
unless TX is also configured. Similarly we plug both of those
in for TLS_HW (NIC crypto offload) even tho TLS_HW has a completely
different implementation for TX.
Last but not least we always plug in something based on inet_stream_ops
even though a few of the callbacks differ for IPv6 (getname, release,
bind).
Use a callback building method similar to what we do for struct proto.
Fixes: c46234ebb4 ("tls: RX path for ktls")
Fixes: d4ffb02dee ("net/tls: enable sk_msg redirect to tls socket egress")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
recvmsg() will put peek()ed and partially read records onto the rx_list.
splice_read() needs to consult that list otherwise it may miss data.
Align with recvmsg() and also put partially-read records onto rx_list.
tls_sw_advance_skb() is pretty pointless now and will be removed in
net-next.
Fixes: 692d7b5d1f ("tls: Fix recvmsg() to be able to peek across multiple records")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We don't support splicing control records. TLS 1.3 changes moved
the record type check into the decrypt if(). The skb may already
be decrypted and still be an alert.
Note that decrypt_skb_update() is idempotent and updates ctx->decrypted
so the if() is pointless.
Reorder the check for decryption errors with the content type check
while touching them. This part is not really a bug, because if
decryption failed in TLS 1.3 content type will be DATA, and for
TLS 1.2 it will be correct. Nevertheless its strange to touch output
before checking if the function has failed.
Fixes: fedf201e12 ("net: tls: Refactor control message handling on recv")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
More missed changes, the response back to another system sending a
command that had no user to handle it wasn't formatted properly.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
A couple of issues:
The tested data sizes are wrong; during the design that changed and this
got missed.
The formatting of the reponse couldn't use the normal one, it has to be
an IPMB formatted response.
Reported-by: Jakub Kicinski <kuba@kernel.org>
Fixes: 059747c245 ("ipmi: Add support for IPMB direct messages")
Signed-off-by: Corey Minyard <cminyard@mvista.com>
content, one error-checking fix for vc4 and two fixes for nouveau, one
to support a new device and another one to properly check for errors.
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Merge tag 'drm-misc-fixes-2021-11-25' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
One removal fix for hyperv, one fix in aspeed for the vga_pw sysfs file
content, one error-checking fix for vc4 and two fixes for nouveau, one
to support a new device and another one to properly check for errors.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211125101819.ynu7zgbs7yfwedri@houat
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Merge tag 'block-5.16-2021-11-25' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request via Christoph:
- Add a NO APST quirk for a Kioxia device (Enzo Matsumiya)
- Fix write zeroes pi (Klaus Jensen)
- Various TCP transport fixes (Maurizio Lombardi and Varun
Prakash)
- Ignore invalid fast_io_fail_tmo values (Maurizio Lombardi)
- Use IOCB_NOWAIT only if the filesystem supports it (Maurizio
Lombardi)
- Module loading fix (Ming)
- Kerneldoc warning fix (Yang)
* tag 'block-5.16-2021-11-25' of git://git.kernel.dk/linux-block:
block: fix parameter not described warning
nvmet: use IOCB_NOWAIT only if the filesystem supports it
nvme: fix write zeroes pi
nvme-fabrics: ignore invalid fast_io_fail_tmo values
nvme-pci: add NO APST quirk for Kioxia device
nvme-tcp: fix memory leak when freeing a queue
nvme-tcp: validate R2T PDU in nvme_tcp_handle_r2t()
nvmet-tcp: fix incomplete data digest send
nvmet-tcp: fix memory leak when performing a controller reset
nvmet-tcp: add an helper to free the cmd buffers
nvmet-tcp: fix a race condition between release_queue and io_work
block: avoid to touch unloaded module instance when opening bdev
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Merge tag 'io_uring-5.16-2021-11-25' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A locking fix for link traversal, and fixing up an outdated function
name in a comment"
* tag 'io_uring-5.16-2021-11-25' of git://git.kernel.dk/linux-block:
io_uring: correct link-list traversal locking
io_uring: fix missed comment from *task_file rename
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Merge tag '5.16-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Four small cifs/smb3 fixes:
- two multichannel fixes
- fix problem noted by kernel test robot
- update internal version number"
* tag '5.16-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal version number
smb2: clarify rc initialization in smb2_reconnect
cifs: populate server_hostname for extra channels
cifs: nosharesock should be set on new server
André Almeida sends an update for the newly added futex_waitv
syscall that was initially only added to a few architectures.
Some additional ones have since made it through architecture
maintainer trees, this finishes the remaining ones.
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Merge tag 'asm-generic-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic syscall table update from Arnd Bergmann:
"André Almeida sends an update for the newly added futex_waitv syscall
that was initially only added to a few architectures.
Some additional ones have since made it through architecture
maintainer trees, this finishes the remaining ones"
* tag 'asm-generic-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
futex: Wireup futex_waitv syscall
There are only a few devicetree fixes this time:
- one outdated devicetree property that slipped into the
newly added ExynosAutov9 support
- three changes to Broadcom SoCs that had incorrect
number values for interrupts or irqchips.
In the MAINTAINERS file, Nishanth Menon gets listed for TI K3 SoCs,
while Taichi Sugaya and Takao Orito take ownership of the Socionext
Milbeaut platform.
All other changes are for SoC specific drivers, fixing:
- A missing NULL pointer check in the mediatek memory driver
- An integer overflow issue in the Arm smccc firwmare interface
- A false-positive fortify-source check
- Error handling fixes for optee and smci
- Incorrect message format in one SCMI call
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Merge tag 'arm-fixes-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"There are only a few devicetree fixes this time:
- one outdated devicetree property that slipped into the newly added
ExynosAutov9 support
- three changes to Broadcom SoCs that had incorrect number values for
interrupts or irqchips.
In the MAINTAINERS file, Nishanth Menon gets listed for TI K3 SoCs,
while Taichi Sugaya and Takao Orito take ownership of the Socionext
Milbeaut platform.
All other changes are for SoC specific drivers, fixing:
- A missing NULL pointer check in the mediatek memory driver
- An integer overflow issue in the Arm smccc firwmare interface
- A false-positive fortify-source check
- Error handling fixes for optee and smci
- Incorrect message format in one SCMI call"
* tag 'arm-fixes-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
memory: mtk-smi: Fix a null dereference for the ostd
arm64: dts: exynos: drop samsung,ufs-shareability-reg-offset in ExynosAutov9
MAINTAINERS: Update maintainer entry for keystone platforms
MAINTAINERS: Add entry to MAINTAINERS for Milbeaut
firmware: smccc: Fix check for ARCH_SOC_ID not implemented
ARM: socfpga: Fix crash with CONFIG_FORTIRY_SOURCE
firmware: arm_scmi: Fix type error assignment in voltage protocol
firmware: arm_scmi: Fix type error in sensor protocol
firmware: arm_scmi: pm: Propagate return value to caller
firmware: arm_scmi: Fix base agent discover response
optee: fix kfree NULL pointer
ARM: dts: bcm2711: Fix PCIe interrupts
ARM: dts: BCM5301X: Add interrupt properties to GPIO node
ARM: dts: BCM5301X: Fix I2C controller interrupt
firmware: arm_scmi: Fix null de-reference on error path
- Fix compilation warnings on csky and sparc
- Rename multipage folios to large folios
- Rename AS_THP_SUPPORT and FS_THP_SUPPORT
- Add functions to zero portions of a folio
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Merge tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache
Pull folio fixes from Matthew Wilcox:
"In the course of preparing the folio changes for iomap for next merge
window, we discovered some problems that would be nice to address now:
- Renaming multi-page folios to large folios.
mapping_multi_page_folio_support() is just a little too long, so we
settled on mapping_large_folio_support(). That meant renaming, eg
folio_test_multi() to folio_test_large().
Rename AS_THP_SUPPORT to match
- I hadn't included folio wrappers for zero_user_segments(), etc.
Also, multi-page^W^W large folio support is now independent of
CONFIG_TRANSPARENT_HUGEPAGE, so machines with HIGHMEM always need
to fall back to the out-of-line zero_user_segments().
Remove FS_THP_SUPPORT to match
- The build bots finally got round to telling me that I missed a
couple of architectures when adding flush_dcache_folio(). Christoph
suggested that we just add linux/cacheflush.h and not rely on
asm-generic/cacheflush.h"
* tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache:
mm: Add functions to zero portions of a folio
fs: Rename AS_THP_SUPPORT and mapping_thp_support
fs: Remove FS_THP_SUPPORT
mm: Remove folio_test_single
mm: Rename folio_test_multi to folio_test_large
Add linux/cacheflush.h
Have pericom_do_set_divisor() use the uartclk instead of a hard coded
value to work with different speed crystals. Tested with 14.7456 and 24
MHz crystals.
Have pericom_do_set_divisor() always calculate the divisor rather than
call serial8250_do_set_divisor() for rates below baud_base.
Do not write registers or call serial8250_do_set_divisor() if valid
divisors could not be found.
Fixes: 6bf4e42f1d ("serial: 8250: Add support for higher baud rates to Pericom chips")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jay Dolan <jay.dolan@accesio.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211122120604.3909-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix error in table for PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S that caused it
and PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4 to be missing their fourth port.
Fixes: 78d3820b9b ("serial: 8250_pci: Have ACCES cards that use the four port Pericom PI7C9X7954 chip use the pci_pericom_setup()")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jay Dolan <jay.dolan@accesio.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211122120604.3909-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit f45709df77 ("serial: 8250: Don't touch RTS modem control while
in rs485 mode") sought to prevent user space from interfering with rs485
communication by ignoring a TIOCMSET ioctl() which changes RTS polarity.
It did so in serial8250_do_set_mctrl(), which turns out to be too deep
in the call stack: When a uart_port is opened, RTS polarity is set by
the rs485-aware function uart_port_dtr_rts(). It calls down to
serial8250_do_set_mctrl() and that particular RTS polarity change should
*not* be ignored.
The user-visible result is that on 8250_omap ports which use rs485 with
inverse polarity (RTS bit in MCR register is 1 to receive, 0 to send),
a newly opened port initially sets up RTS for sending instead of
receiving. That's because omap_8250_startup() sets the cached value
up->mcr to 0 and omap_8250_restore_regs() subsequently writes it to the
MCR register. Due to the commit, serial8250_do_set_mctrl() preserves
that incorrect register value:
do_sys_openat2
do_filp_open
path_openat
vfs_open
do_dentry_open
chrdev_open
tty_open
uart_open
tty_port_open
uart_port_activate
uart_startup
uart_port_startup
serial8250_startup
omap_8250_startup # up->mcr = 0
uart_change_speed
serial8250_set_termios
omap_8250_set_termios
omap_8250_restore_regs
serial8250_out_MCR # up->mcr written
tty_port_block_til_ready
uart_dtr_rts
uart_port_dtr_rts
serial8250_set_mctrl
omap8250_set_mctrl
serial8250_do_set_mctrl # mcr[1] = 1 ignored
Fix by intercepting RTS changes from user space in uart_tiocmset()
instead.
Link: https://lore.kernel.org/linux-serial/20211027111644.1996921-1-baocheng.su@siemens.com/
Fixes: f45709df77 ("serial: 8250: Don't touch RTS modem control while in rs485 mode")
Cc: Chao Zeng <chao.zeng@siemens.com>
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Su Bao Cheng <baocheng.su@siemens.com>
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Tested-by: Su Bao Cheng <baocheng.su@siemens.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/21170e622a1aaf842a50b32146008b5374b3dd1d.1637596432.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Revert commit b4b844930f ("tty: serial: fsl_lpuart: drop earlycon entry
for i.MX8QXP"), because this breaks earlycon support on imx8qm/imx8qxp.
While it is true that for earlycon there is no difference between
i.MX8QXP and i.MX7ULP (for now at least), there are differences
regarding clocks and fixups for wakeup support. For that reason it was
deemed unacceptable to add the imx7ulp compatible to device tree in
order to get earlycon working again.
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20211124073109.805088-1-alexander.stein@ew.tq-group.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current implementation uses 0 as lower limit for the baud rate
tolerance for tegra20 and tegra30 chips which causes isses on UART
initialization as soon as baud rate clock is lower than required even
when within the standard UART tolerance of +/- 4%.
This fix aligns the implementation with the initial commit description
of +/- 4% tolerance for tegra chips other than tegra186 and
tegra194.
Fixes: d781ec21ba ("serial: tegra: report clk rate errors")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Patrik John <patrik.john@u-blox.com>
Link: https://lore.kernel.org/r/sig.19614244f8.20211123132737.88341-1-patrik.john@u-blox.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The LITEX symbol is neither a build or runtime dependency for the
liteuart serial driver.
LITEX is selected by the "LiteX SoC Controller" driver, which does a
probe-time register-access sanity check and panics if the SoC has not
been configured correctly. That driver's Kconfig entry asserts that any
LiteX driver using the LiteX register accessors should depend on LITEX,
but currently only the serial driver complies.
Relax this LITEX "dependency" in order to make it easier to compile test
the driver.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211117100512.5058-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to release the allocated minor number before returning on
probe errors.
Fixes: 1da81e5562 ("drivers/tty/serial: add LiteUART driver")
Cc: stable@vger.kernel.org # 5.11
Cc: Filip Kokosinski <fkokosinski@antmicro.com>
Cc: Mateusz Holenko <mholenko@antmicro.com>
Reviewed-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211117100512.5058-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Deregister the port when unbinding the driver to prevent it from being
used after releasing the driver data and leaking memory allocated by
serial core.
Fixes: 1da81e5562 ("drivers/tty/serial: add LiteUART driver")
Cc: stable@vger.kernel.org # 5.11
Cc: Filip Kokosinski <fkokosinski@antmicro.com>
Cc: Mateusz Holenko <mholenko@antmicro.com>
Reviewed-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211117100512.5058-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drvdata has to be set in _probe() - otherwise platform_get_drvdata()
causes null pointer dereference BUG in _remove().
Fixes: 1da81e5562 ("drivers/tty/serial: add LiteUART driver")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ilia Sergachev <silia@ethz.ch>
Link: https://lore.kernel.org/r/20211115224944.23f8c12b@dtkw
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix a division by zero in `vgacon_resize' with a backtrace like:
vgacon_resize
vc_do_resize
vgacon_init
do_bind_con_driver
do_unbind_con_driver
fbcon_fb_unbind
do_unregister_framebuffer
do_register_framebuffer
register_framebuffer
__drm_fb_helper_initial_config_and_unlock
drm_helper_hpd_irq_event
dw_hdmi_irq
irq_thread
kthread
caused by `c->vc_cell_height' not having been initialized. This has
only started to trigger with commit 860dafa902 ("vt: Fix character
height handling with VT_RESIZEX"), however the ultimate offender is
commit 50ec42edd9 ("[PATCH] Detaching fbcon: fix vgacon to allow
retaking of the console").
Said commit has added a call to `vc_resize' whenever `vgacon_init' is
called with the `init' argument set to 0, which did not happen before.
And the call is made before a key vgacon boot parameter retrieved in
`vgacon_startup' has been propagated in `vgacon_init' for `vc_resize' to
use to the console structure being worked on. Previously the parameter
was `c->vc_font.height' and now it is `c->vc_cell_height'.
In this particular scenario the registration of fbcon has failed and vt
resorts to vgacon. Now fbcon does have initialized `c->vc_font.height'
somehow, unlike `c->vc_cell_height', which is why this code did not
crash before, but either way the boot parameters should have been copied
to the console structure ahead of the call to `vc_resize' rather than
afterwards, so that first the call has a chance to use them and second
they do not change the console structure to something possibly different
from what was used by `vc_resize'.
Move the propagation of the vgacon boot parameters ahead of the call to
`vc_resize' then. Adjust the comment accordingly.
Fixes: 50ec42edd9 ("[PATCH] Detaching fbcon: fix vgacon to allow retaking of the console")
Cc: stable@vger.kernel.org # v2.6.18+
Reported-by: Wim Osterholt <wim@djo.tudelft.nl>
Reported-by: Pavel V. Panteleev <panteleev_p@mcst.ru>
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2110252317110.58149@angie.orcam.me.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The CONSOLE_POLLING mode is used for tools like k(g)db. In this kind of
setup, it is often sharing a serial device with the normal system console.
This is usually no problem because the polling helpers can consume input
values directly (when in kgdb context) and the normal Linux handlers can
only consume new input values after kgdb switched back.
This is not true anymore when RX DMA is enabled for UARTDM controllers.
Single input values can no longer be received correctly. Instead following
seems to happen:
* on 1. input, some old input is read (continuously)
* on 2. input, two old inputs are read (continuously)
* on 3. input, three old input values are read (continuously)
* on 4. input, 4 previous inputs are received
This repeats then for each group of 4 input values.
This behavior changes slightly depending on what state the controller was
when the first input was received. But this makes working with kgdb
basically impossible because control messages are always corrupted when
kgdboc tries to parse them.
RX DMA should therefore be off when CONSOLE_POLLING is enabled to avoid
these kind of problems. No such problem was noticed for TX DMA.
Fixes: 9969394501 ("tty: serial: msm: Add RX DMA support")
Cc: stable@vger.kernel.org
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Link: https://lore.kernel.org/r/20211113121050.7266-1-sven@narfation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The document 'ACPI for Arm Components 1.0' defines the following
_HID mappings:
-'Prime cell UART (PL011)': ARMH0011
-'SBSA UART': ARMHB000
Use the sbsa-uart driver when a device is described with
the 'ARMHB000' _HID.
Note:
PL011 devices currently use the sbsa-uart driver instead of the
uart-pl011 driver. Indeed, PL011 devices are not bound to a clock
in ACPI. It is not possible to change their baudrate.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Link: https://lore.kernel.org/r/20211109172248.19061-1-Pierre.Gondois@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 761ed4a945 ("tty: serial_core: convert uart_close to use
tty_port_close") converted serial core to use tty_port_close() but
failed to notice that the transmit buffer still needs to be freed on
final close.
Not freeing the transmit buffer means that the buffer is no longer
cleared on next open so that any ioctl() waiting for the buffer to drain
might wait indefinitely (e.g. on termios changes) or that stale data can
end up being transmitted in case tx is restarted.
Furthermore, the buffer of any port that has been opened would leak on
driver unbind.
Note that the port lock is held when clearing the buffer pointer due to
the ldisc race worked around by commit a5ba1d95e4 ("uart: fix race
between uart_put_char() and uart_shutdown()").
Also note that the tty-port shutdown() callback is not called for
console ports so it is not strictly necessary to free the buffer page
after releasing the lock (cf. d72402145a ("tty/serial: do not free
trasnmit buffer page under port lock")).
Link: https://lore.kernel.org/r/319321886d97c456203d5c6a576a5480d07c3478.1635781688.git.baruch@tkos.co.il
Fixes: 761ed4a945 ("tty: serial_core: convert uart_close to use tty_port_close")
Cc: stable@vger.kernel.org # 4.9
Cc: Rob Herring <robh@kernel.org>
Reported-by: Baruch Siach <baruch@tkos.co.il>
Tested-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211108085431.12637-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adding myself as rpmsg tty maintainer and also adding remoteproc
mailing list to inform about changes in the driver.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20211102123817.19874-1-arnaud.pouliquen@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The build warning:
block/blk-core.c:968: warning: Function parameter or member 'iob'
not described in 'bio_poll'.
Fixes: 5a72e899ce ("block: add a struct io_comp_batch argument to fops->iopoll()")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
It hangup when booting Loongson 3A1000 with BOTH
CONFIG_PAGE_SIZE_64KB and CONFIG_MIPS_VA_BITS_48, that it turn
out to use 2-level pgtable instead of 3-level. 64KB page size
with 2-level pgtable only cover 42 bits VA, use 3-level pgtable
to cover all 48 bits VA(55 bits)
Fixes: 1e321fa917 ("MIPS64: Support of at least 48 bits of SEGBITS)
Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Having a signed (1 << 31) constant for TCR_EL2_RES1 and CPTR_EL2_TCPAC
causes the upper 32-bit to be set to 1 when assigning them to a 64-bit
variable. Bit 32 in TCR_EL2 is no longer RES0 in ARMv8.7: with FEAT_LPA2
it changes the meaning of bits 49:48 and 9:8 in the stage 1 EL2 page
table entries. As a result of the sign-extension, a non-VHE kernel can
no longer boot on a model with ARMv8.7 enabled.
CPTR_EL2 still has the top 32 bits RES0 but we should preempt any future
problems
Make these top bit constants unsigned as per commit df655b75c4
("arm64: KVM: Avoid setting the upper 32 bits of VTCR_EL2 to 1").
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Chris January <Chris.January@arm.com>
Cc: <stable@vger.kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211125152014.2806582-1-catalin.marinas@arm.com
It turns out that 'decode_configs' -> 'set_ftlb_enable' is called under
c->cputype unset, which leaves FTLB disabled on BOTH 3A2000 and 3A3000
Fix it by calling "decode_configs" after c->cputype is initialized
Fixes: da1bd29742 ("MIPS: Loongson64: Probe CPU features via CPUCFG")
Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
There exists the following issue under DEBUG_PREEMPT:
BUG: using smp_processor_id() in preemptible [00000000] code: systemd/1
caller is show_cpuinfo+0x460/0xea0
...
Call Trace:
[<ffffffff8020f0dc>] show_stack+0x94/0x128
[<ffffffff80e6cab4>] dump_stack_lvl+0x94/0xd8
[<ffffffff80e74c5c>] check_preemption_disabled+0x104/0x110
[<ffffffff802209c8>] show_cpuinfo+0x460/0xea0
[<ffffffff80539d54>] seq_read_iter+0xfc/0x4f8
[<ffffffff804fcc10>] new_sync_read+0x110/0x1b8
[<ffffffff804ff57c>] vfs_read+0x1b4/0x1d0
[<ffffffff804ffb18>] ksys_read+0xd0/0x110
[<ffffffff8021c090>] syscall_common+0x34/0x58
We can see the following call trace:
show_cpuinfo()
cpu_has_fpu
current_cpu_data
smp_processor_id()
$ addr2line -f -e vmlinux 0xffffffff802209c8
show_cpuinfo
arch/mips/kernel/proc.c:188
$ head -188 arch/mips/kernel/proc.c | tail -1
if (cpu_has_fpu)
arch/mips/include/asm/cpu-features.h
# define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
arch/mips/include/asm/cpu-info.h
#define current_cpu_data cpu_data[smp_processor_id()]
Based on the above analysis, fix the issue by using raw_cpu_has_fpu
which calls raw_smp_processor_id() in show_cpuinfo().
Fixes: 626bfa0372 ("MIPS: kernel: proc: add CPU option reporting")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
The issue happened randomly in runtime. The message "Link is Down" is
popped but soon it recovered to "Link is Up".
The "Link is Down" results from the incorrect read data for reading the
PHY register via MDIO bus. The correct sequence for reading the data
shall be:
1. fire the command
2. wait for command done (this step was missing)
3. wait for data idle
4. read data from data register
Cc: stable@vger.kernel.org
Fixes: f160e99462 ("net: phy: Add mdio-aspeed")
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/20211125024432.15809-1-dylan_hung@aspeedtech.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Oleksandr brought a bug report where netpoll causes trace
messages in the log on igb.
Danielle brought this back up as still occurring, so we'll try
again.
[22038.710800] ------------[ cut here ]------------
[22038.710801] igb_poll+0x0/0x1440 [igb] exceeded budget in poll
[22038.710802] WARNING: CPU: 12 PID: 40362 at net/core/netpoll.c:155 netpoll_poll_dev+0x18a/0x1a0
As Alex suggested, change the driver to return work_done at the
exit of napi_poll, which should be safe to do in this driver
because it is not polling multiple queues in this single napi
context (multiple queues attached to one MSI-X vector). Several
other drivers contain the same simple sequence, so I hope
this will not create new problems.
Fixes: 16eb8815c2 ("igb: Refactor clean_rx_irq to reduce overhead and improve performance")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reported-by: Danielle Ratson <danieller@nvidia.com>
Suggested-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Danielle Ratson <danieller@nvidia.com>
Link: https://lore.kernel.org/r/20211123204000.1597971-1-jesse.brandeburg@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
HYPERVISOR_set_debugreg() is being called from noinstr code, so it
should be attributed "always_inline".
Fixes: 7361fac046 ("x86/xen: Make set_debugreg() noinstr")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20211125092056.24758-3-jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
HYPERVISOR_get_debugreg() is being called from noinstr code, so it
should be attributed "always_inline".
Fixes: f4afb713e5 ("x86/xen: Make get_debugreg() noinstr")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20211125092056.24758-2-jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
- add a NO APST quirk for a Kioxia device (Enzo Matsumiya)
- fix write zeroes pi (Klaus Jensen)
- various TCP transport fixes (Maurizio Lombardi and Varun Prakash)
- ignore invalid fast_io_fail_tmo values (Maurizio Lombardi)
- use IOCB_NOWAIT only if the filesystem supports it (Maurizio Lombardi)
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Merge tag 'nvme-5.16-2021-11-25' of git://git.infradead.org/nvme into block-5.16
Pull NVMe fixes from Christoph:
"nvme fixes for Linux 5.16
- add a NO APST quirk for a Kioxia device (Enzo Matsumiya)
- fix write zeroes pi (Klaus Jensen)
- various TCP transport fixes (Maurizio Lombardi and Varun Prakash)
- ignore invalid fast_io_fail_tmo values (Maurizio Lombardi)
- use IOCB_NOWAIT only if the filesystem supports it (Maurizio Lombardi)"
* tag 'nvme-5.16-2021-11-25' of git://git.infradead.org/nvme:
nvmet: use IOCB_NOWAIT only if the filesystem supports it
nvme: fix write zeroes pi
nvme-fabrics: ignore invalid fast_io_fail_tmo values
nvme-pci: add NO APST quirk for Kioxia device
nvme-tcp: fix memory leak when freeing a queue
nvme-tcp: validate R2T PDU in nvme_tcp_handle_r2t()
nvmet-tcp: fix incomplete data digest send
nvmet-tcp: fix memory leak when performing a controller reset
nvmet-tcp: add an helper to free the cmd buffers
nvmet-tcp: fix a race condition between release_queue and io_work
