| Age | Commit message (Collapse) | Author |
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Pull MTD updates from Boris Brezillon:
"Core MTD changes:
- Use struct_size() where appropriate
- mtd_{read,write}() as wrappers around mtd_{read,write}_oob()
- Fix misuse of PTR_ERR() in docg3
- Coding style improvements in mtdcore.c
SPI NOR changes:
Core changes:
- Add support of octal mode I/O transfer
- Add a bunch of SPI NOR entries to the flash_info table
SPI NOR controller driver changes:
- cadence-quadspi:
* Add support for Octal SPI controller
* write upto 8-bytes data in STIG mode
- mtk-quadspi:
* rename config to a common one
* add SNOR_HWCAPS_READ to spi_nor_hwcaps mask
- Add Tudor as SPI-NOR co-maintainer
NAND changes:
NAND core changes:
- Fourth batch of fixes/cleanup to the raw NAND core impacting
various controller drivers (Sunxi, Marvell, MTK, TMIO, OMAP2).
- Check the return code of nand_reset() and nand_readid_op().
- Remove ->legacy.erase and single_erase().
- Simplify the locking.
- Several implicit fall through annotations.
Raw NAND controllers drivers changes:
- Fix various possible object reference leaks (MTK, JZ4780, Atmel)
- ST:
* Add support for STM32 FMC2 NAND flash controller
- Meson:
* Add support for Amlogic NAND flash controller
- Denali:
* Several cleanup patches
- Sunxi:
* Several cleanup patches
- FSMC:
* Disable NAND on remove()
* Reset NAND timings on resume()
SPI-NAND drivers changes:
- Toshiba:
* Add support for all Toshiba products.
- Macronix:
* Fix ECC status read.
- Gigadevice:
* Add support for GD5F1GQ4UExxG"
* tag 'mtd/for-5.1' of git://git.infradead.org/linux-mtd: (64 commits)
mtd: spi-nor: Fix wrong abbreviation HWCPAS
mtd: spi-nor: cadence-quadspi: fix spelling mistake: "Couldnt't" -> "Couldn't"
mtd: spi-nor: Add support for en25qh64
mtd: spi-nor: Add support for MX25V8035F
mtd: spi-nor: Add support for EN25Q80A
mtd: spi-nor: cadence-quadspi: Add support for Octal SPI controller
dt-bindings: cadence-quadspi: Add new compatible for AM654 SoC
mtd: spi-nor: split s25fl128s into s25fl128s0 and s25fl128s1
mtd: spi-nor: cadence-quadspi: write upto 8-bytes data in STIG mode
mtd: spi-nor: Add support for mx25u3235f
mtd: rawnand: denali_dt: remove single anonymous clock support
mtd: rawnand: mtk: fix possible object reference leak
mtd: rawnand: jz4780: fix possible object reference leak
mtd: rawnand: atmel: fix possible object reference leak
mtd: rawnand: fsmc: Disable NAND on remove()
mtd: rawnand: fsmc: Reset NAND timings on resume()
mtd: spinand: Add support for GigaDevice GD5F1GQ4UExxG
mtd: rawnand: denali: remove unused dma_addr field from denali_nand_info
mtd: rawnand: denali: remove unused function argument 'raw'
mtd: rawnand: denali: remove unneeded denali_reset_irq() call
...
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Pull VFIO updates from Alex Williamson:
- Switch mdev to generic UUID API (Andy Shevchenko)
- Fixup platform reset include paths (Masahiro Yamada)
- Fix usage of MINORMASK (Chengguang Xu)
- Remove noise from duplicate spapr table unsets (Alexey Kardashevskiy)
- Restore device state after PM reset (Alex Williamson)
- Ensure memory translation enabled for PCI ROM access (Eric Auger)
* tag 'vfio-v5.1-rc1' of git://github.com/awilliam/linux-vfio:
vfio_pci: Enable memory accesses before calling pci_map_rom
vfio/pci: Restore device state on PM transition
vfio/spapr_tce: Skip unsetting already unset table
samples/vfio-mdev/mtty: expand minor range when registering chrdev region
samples/vfio-mdev/mdpy: expand minor range when registering chrdev region
samples/vfio-mdev/mbochs: expand minor range when registering chrdev region
vfio: expand minor range when registering chrdev region
vfio: platform: reset: fix up include directives to remove ccflags-y
vfio-mdev: Switch to use new generic UUID API
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The current implementation of splice() and tee() ignores O_NONBLOCK set
on pipe file descriptors and checks only the SPLICE_F_NONBLOCK flag for
blocking on pipe arguments. This is inconsistent since splice()-ing
from/to non-pipe file descriptors does take O_NONBLOCK into
consideration.
Fix this by promoting O_NONBLOCK, when set on a pipe, to
SPLICE_F_NONBLOCK.
Some context for how the current implementation of splice() leads to
inconsistent behavior. In the ongoing work[1] to add VM tracing
capability to trace-cmd we stream tracing data over named FIFOs or
vsockets from guests back to the host.
When we receive SIGINT from user to stop tracing, we set O_NONBLOCK on
the input file descriptor and set SPLICE_F_NONBLOCK for the next call to
splice(). If splice() was blocked waiting on data from the input FIFO,
after SIGINT splice() restarts with the same arguments (no
SPLICE_F_NONBLOCK) and blocks again instead of returning -EAGAIN when no
data is available.
This differs from the splice() behavior when reading from a vsocket or
when we're doing a traditional read()/write() loop (trace-cmd's
--nosplice argument).
With this patch applied we get the same behavior in all situations after
setting O_NONBLOCK which also matches the behavior of doing a
read()/write() loop instead of splice().
This change does have potential of breaking users who don't expect
EAGAIN from splice() when SPLICE_F_NONBLOCK is not set. OTOH programs
that set O_NONBLOCK and don't anticipate EAGAIN are arguably buggy[2].
[1] https://github.com/skaslev/trace-cmd/tree/vsock
[2] https://github.com/torvalds/linux/blob/d47e3da1759230e394096fd742aad423c291ba48/fs/read_write.c#L1425
Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The arg5 of KEYCTL_PKEY_QUERY should have a __user pointer tag on
it as it is a user pointer. This clears the following sparse warning
for this:
security/keys/keyctl.c:1755:43: warning: incorrect type in argument 3 (different address spaces)
security/keys/keyctl.c:1755:43: expected struct keyctl_pkey_query [noderef] <asn:1>*<noident>
security/keys/keyctl.c:1755:43: got struct keyctl_pkey_query *<noident>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-fixes for v5.0:
- Block fb changes for async atomic updates to prevent a use after free.
- Fix ID mismatch error on load in bochs.
- Fix memory leak when drm_setup fails.
- Fixes around handling of DRM_AUTH.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/42113611-e2cd-6bdd-7de5-4f8ab5a0cbe6@linux.intel.com
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In VRR mode, keep track of the vblank count of the last
completed pageflip in amdgpu_crtc->last_flip_vblank, as
recorded in the pageflip completion handler after each
completed flip.
Use that count to prevent mmio programming a new pageflip
within the same vblank in which the last pageflip completed,
iow. to throttle pageflips to at most one flip per video
frame, while at the same time allowing to request a flip
not only before start of vblank, but also anywhere within
vblank.
The old logic did the same, and made sense for regular fixed
refresh rate flipping, but in vrr mode it prevents requesting
a flip anywhere inside the possibly huge vblank, thereby
reducing framerate in vrr mode instead of improving it, by
delaying a slightly delayed flip requests up to a maximum
vblank duration + 1 scanout duration. This would limit VRR
usefulness to only help applications with a very high GPU
demand, which can submit the flip request before start of
vblank, but then have to wait long for fences to complete.
With this method a flip can be both requested and - after
fences have completed - executed, ie. it doesn't matter if
the request (amdgpu_dm_do_flip()) gets delayed until deep
into the extended vblank due to cpu execution delays. This
also allows clients which want to regulate framerate within
the vrr range a much more fine-grained control of flip timing,
a feature that might be useful for video playback, and is
very useful for neuroscience/vision research applications.
In regular non-VRR mode, retain the old flip submission
behavior. This to keep flip scheduling for fullscreen X11/GLX
OpenGL clients intact, if they use the GLX_OML_sync_control
extensions glXSwapBufferMscOML(, ..., target_msc,...) function
with a specific target_msc target vblank count.
glXSwapBuffersMscOML() or DRI3/Present PresentPixmap() will
not flip at the proper target_msc for a non-zero target_msc
if VRR mode is active with this patch. They'd often flip one
frame too early. However, this limitation should not matter
much in VRR mode, as scheduling based on vblank counts is
pretty futile/unusable under variable refresh duration
anyway, so no real extra harm is done.
According to some testing already done with this patch by
Nicholas on top of my tests, IGT tests didn't report any
problems. If fixes stuttering and flickering when flipping
at rates below the minimum vrr refresh rate.
Fixes: bb47de736661 ("drm/amdgpu: Set FreeSync state using drm VRR
properties")
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Michel Dänzer <michel@daenzer.net>
Tested-by: Bruno Filipe <bmilreu@gmail.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Pull vfs fixes from Al Viro:
"Assorted fixes that sat in -next for a while, all over the place"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
aio: Fix locking in aio_poll()
exec: Fix mem leak in kernel_read_file
copy_mount_string: Limit string length to PATH_MAX
cgroup: saner refcounting for cgroup_root
fix cgroup_do_mount() handling of failure exits
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The label is only used from inside the #ifdef and should be
hidden the same way, to avoid this warning:
net/sched/act_tunnel_key.c: In function 'tunnel_key_init':
net/sched/act_tunnel_key.c:389:1: error: label 'release_tun_meta' defined but not used [-Werror=unused-label]
release_tun_meta:
Fixes: 41411e2fd6b8 ("net/sched: act_tunnel_key: Add dst_cache support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When CONFIG_SYSCTL is turned off, we get a link failure for
the newly introduced tuning knob.
net/ipv6/addrconf.o: In function `addrconf_init_net':
addrconf.c:(.text+0x31dc): undefined reference to `sysctl_devconf_inherit_init_net'
Add an IS_ENABLED() check to fall back to the default behavior
(sysctl_devconf_inherit_init_net=0) here.
Fixes: 856c395cfa63 ("net: introduce a knob to control whether to inherit devconf config")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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MDIO_BUS_MUX can only be selected if OF_MDIO is already turned on:
WARNING: unmet direct dependencies detected for MDIO_BUS_MUX
Depends on [n]: NETDEVICES [=y] && MDIO_BUS [=m] && OF_MDIO [=n]
Selected by [m]:
- MDIO_BUS_MUX_MULTIPLEXER [=m] && NETDEVICES [=y] && MDIO_BUS [=m] && OF [=y]
Fixes: 7865ad6551c9 ("drivers: net: phy: mdio-mux: Add support for Generic Mux controls")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As can be seen from the usage of the return value, we should use
phy_modify_mmd_changed() here.
Fixes: 9a5dc8af4416 ("net: phy: add genphy_c45_an_config_aneg")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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DSA framework
In the original patch I missed to add mv88e6xxx_ports_cmode_init()
to the second probe function, the one for the new DSA framework.
Fixes: ed8fe20205ac ("net: dsa: mv88e6xxx: prevent interrupt storm caused by mv88e6390x_port_set_cmode")
Reported-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patchset does:
1. Moves MM related code from kernel/setup.c to mm/init.c
2. Implements compile-time fixed mappings
Using fixed mappings, we get earlyprints even without SBI calls.
For example, we can now use kernel parameter
"earlycon=uart8250,mmio,0x10000000"
to get early prints on QEMU virt machine without using SBI calls.
The patchset is tested on QEMU virt machine.
Palmer: It looks like some of the code movement here conflicted with the
patches to move hartid handling around. As far as I can tell the only
changed code was in smp_setup_processor_id(), and I've kept the one in
smp.c.
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Remove duplicate header which is included twice.
Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The function early_init_dt_scan returns true if a DTB was detected.
Fixes: 8fd6e05c7463 ("arch: riscv: support kernel command line forcing when no DTB passed")
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Paul Walmsley <paul.walmsley@sifive.com>
Tested-by: Paul Walmsley <paul.walmsley@sifive.com> # FU540 HiFive-U BBL
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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Some sky2 chips fire IRQ after S3, before the driver is fully resumed:
[ 686.804877] do_IRQ: 1.37 No irq handler for vector
This is likely a platform bug that device isn't fully quiesced during
S3. Use MSI-X, maskable MSI or INTx can prevent this issue from
happening.
Since MSI-X and maskable MSI are not supported by this device, fallback
to use INTx on affected platforms.
BugLink: https://bugs.launchpad.net/bugs/1807259
BugLink: https://bugs.launchpad.net/bugs/1809843
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eran Ben Elisha says:
====================
Devlink health updates
This patchset includes a fix [patch 01] to the devlink health state update, in
case recover was aborted.
In addition, it includes a small enhancement to the infrastructure in order to
allow direct state update in run-time, and use it from mlx5e tx reporter.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Once channels were successfully opened, update tx reporter health state to
healthy. This is needed for the following scenario:
- SQ has an un-recovered error reported to the devlink health, resulting tx
reporter state to be error.
- Current channels (including this SQ) are closed
- New channels are opened
After that flow, the original error was "solved", and tx reporter state
should be healthy. However, as it was resolved as a side effect, and not
via tx reporter recover method, driver needs to inform devlink health
about it.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is possible that a reporter state will be updated due to a recover flow
which is not triggered by a devlink health related operation, but as a side
effect of some other operation in the system.
Expose devlink health API for a direct update of a reporter status.
Move devlink_health_reporter_state enum definition to devlink.h so it could
be used from drivers as a parameter of devlink_health_reporter_state_update.
In addition, add trace_devlink_health_reporter_state_update to provide user
notification for reporter state change.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If devlink_health_report() aborted the recover flow due to grace period checker,
it left the reporter status as DEVLINK_HEALTH_REPORTER_STATE_HEALTHY, which is
a bug. Fix that by always setting the reporter state to
DEVLINK_HEALTH_REPORTER_STATE_ERROR prior to running the checker mentioned above.
In addition, save the previous health_state in a temporary variable, then use
it in the abort check comparison instead of using reporter->health_state which
might be already changed.
Fixes: c8e1da0bf923 ("devlink: Add health report functionality")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The user msg is also copied to the abort packet when doing SCTP_ABORT in
sctp_sendmsg_check_sflags(). When SCTP_SENDALL is set, iov_iter_revert()
should have been called for sending abort on the next asoc with copying
this msg. Otherwise, memcpy_from_msg() in sctp_make_abort_user() will
fail and return error.
Fixes: 4910280503f3 ("sctp: add support for snd flag SCTP_SENDALL process in sendmsg")
Reported-by: Ying Xu <yinxu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When team is used in loadbalance mode a BPF filter can be used to
provide a hash which will determine the Tx port.
When the netdev is later unregistered the filter is not freed which
results in memory leaks [1].
Fix by freeing the program and the corresponding filter when
unregistering the netdev.
[1]
unreferenced object 0xffff8881dbc47cc8 (size 16):
comm "teamd", pid 3068, jiffies 4294997779 (age 438.247s)
hex dump (first 16 bytes):
a3 00 6b 6b 6b 6b 6b 6b 88 a5 82 e1 81 88 ff ff ..kkkkkk........
backtrace:
[<000000008a3b47e3>] team_nl_cmd_options_set+0x88f/0x11b0
[<00000000c4f4f27e>] genl_family_rcv_msg+0x78f/0x1080
[<00000000610ef838>] genl_rcv_msg+0xca/0x170
[<00000000a281df93>] netlink_rcv_skb+0x132/0x380
[<000000004d9448a2>] genl_rcv+0x29/0x40
[<000000000321b2f4>] netlink_unicast+0x4c0/0x690
[<000000008c25dffb>] netlink_sendmsg+0x929/0xe10
[<00000000068298c5>] sock_sendmsg+0xc8/0x110
[<0000000082a61ff0>] ___sys_sendmsg+0x77a/0x8f0
[<00000000663ae29d>] __sys_sendmsg+0xf7/0x250
[<0000000027c5f11a>] do_syscall_64+0x14d/0x610
[<000000006cfbc8d3>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<00000000e23197e2>] 0xffffffffffffffff
unreferenced object 0xffff8881e182a588 (size 2048):
comm "teamd", pid 3068, jiffies 4294997780 (age 438.247s)
hex dump (first 32 bytes):
20 00 00 00 02 00 00 00 30 00 00 00 28 f0 ff ff .......0...(...
07 00 00 00 00 00 00 00 28 00 00 00 00 00 00 00 ........(.......
backtrace:
[<000000002daf01fb>] lb_bpf_func_set+0x45c/0x6d0
[<000000008a3b47e3>] team_nl_cmd_options_set+0x88f/0x11b0
[<00000000c4f4f27e>] genl_family_rcv_msg+0x78f/0x1080
[<00000000610ef838>] genl_rcv_msg+0xca/0x170
[<00000000a281df93>] netlink_rcv_skb+0x132/0x380
[<000000004d9448a2>] genl_rcv+0x29/0x40
[<000000000321b2f4>] netlink_unicast+0x4c0/0x690
[<000000008c25dffb>] netlink_sendmsg+0x929/0xe10
[<00000000068298c5>] sock_sendmsg+0xc8/0x110
[<0000000082a61ff0>] ___sys_sendmsg+0x77a/0x8f0
[<00000000663ae29d>] __sys_sendmsg+0xf7/0x250
[<0000000027c5f11a>] do_syscall_64+0x14d/0x610
[<000000006cfbc8d3>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<00000000e23197e2>] 0xffffffffffffffff
Fixes: 01d7f30a9f96 ("team: add loadbalance mode")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Similar to commit 44f49dd8b5a6 ("ipmr: fix possible race resulting from
improper usage of IP_INC_STATS_BH() in preemptible context."), we cannot
assume preemption is disabled when incrementing the counter and
accessing a per-CPU variable.
Preemption can be enabled when we add a route in process context that
corresponds to packets stored in the unresolved queue, which are then
forwarded using this route [1].
Fix this by using IP6_INC_STATS() which takes care of disabling
preemption on architectures where it is needed.
[1]
[ 157.451447] BUG: using __this_cpu_add() in preemptible [00000000] code: smcrouted/2314
[ 157.460409] caller is ip6mr_forward2+0x73e/0x10e0
[ 157.460434] CPU: 3 PID: 2314 Comm: smcrouted Not tainted 5.0.0-rc7-custom-03635-g22f2712113f1 #1336
[ 157.460449] Hardware name: Mellanox Technologies Ltd. MSN2100-CB2FO/SA001017, BIOS 5.6.5 06/07/2016
[ 157.460461] Call Trace:
[ 157.460486] dump_stack+0xf9/0x1be
[ 157.460553] check_preemption_disabled+0x1d6/0x200
[ 157.460576] ip6mr_forward2+0x73e/0x10e0
[ 157.460705] ip6_mr_forward+0x9a0/0x1510
[ 157.460771] ip6mr_mfc_add+0x16b3/0x1e00
[ 157.461155] ip6_mroute_setsockopt+0x3cb/0x13c0
[ 157.461384] do_ipv6_setsockopt.isra.8+0x348/0x4060
[ 157.462013] ipv6_setsockopt+0x90/0x110
[ 157.462036] rawv6_setsockopt+0x4a/0x120
[ 157.462058] __sys_setsockopt+0x16b/0x340
[ 157.462198] __x64_sys_setsockopt+0xbf/0x160
[ 157.462220] do_syscall_64+0x14d/0x610
[ 157.462349] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: 0912ea38de61 ("[IPV6] MROUTE: Add stats in multicast routing module method ip6_mr_forward().")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Allocating memory via kzalloc for phi may fail and causes a
NULL pointer dereference. This patch avoids such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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PHYs
If an external PHY is connected via SGMII and uses in-band signalling
then the auto-negotiated values aren't propagated to the port,
resulting in a broken link. See discussion in [0]. This patch adds
this propagation. We need to call mv88e6xxx_port_setup_mac(),
therefore export it from chip.c.
Successfully tested on a ZII DTU with 88E6390 switch and an
Aquantia AQCS109 PHY connected via SGMII to port 9.
[0] https://marc.info/?t=155130287200001&r=1&w=2
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Every in-kernel use of this function defined it to KERNEL_DS (either as
an actual define, or as an inline function). It's an entirely
historical artifact, and long long long ago used to actually read the
segment selector valueof '%ds' on x86.
Which in the kernel is always KERNEL_DS.
Inspired by a patch from Jann Horn that just did this for a very small
subset of users (the ones in fs/), along with Al who suggested a script.
I then just took it to the logical extreme and removed all the remaining
gunk.
Roughly scripted with
git grep -l '(get_ds())' -- :^tools/ | xargs sed -i 's/(get_ds())/(KERNEL_DS)/'
git grep -lw 'get_ds' -- :^tools/ | xargs sed -i '/^#define get_ds()/d'
plus manual fixups to remove a few unusual usage patterns, the couple of
inline function cases and to fix up a comment that had become stale.
The 'get_ds()' function remains in an x86 kvm selftest, since in user
space it actually does something relevant.
Inspired-by: Jann Horn <jannh@google.com>
Inspired-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently, we set hwcap based on first valid hart from DT. This may not
be correct always as that hart might not be current booting cpu or may
have a different capability.
Set hwcap as the capabilities supported by all possible harts with "okay"
status.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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We should never have a cpuid greater that NR_CPUS. Compare with NR_CPUS
before creating the mapping between logical and physical CPU ids. This
is also mandatory as NR_CPUS check is removed from
riscv_of_processor_hartid.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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It is perfectly okay to call riscv_hartid_to_cpuid for a hartid that is
not mapped with an CPU id. It can happen if the calling functions
retrieves the hartid from DT. However, that hartid was never brought
online by the firmware or kernel for any reasons.
No need to BUG() in the above case. A negative error return is
sufficient and the calling function should check for the return value
always.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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In non-smp configuration, hartid can be higher that NR_CPUS.
riscv_of_processor_hartid should not be compared to hartid to NR_CPUS in
that case. Moreover, this function checks all the DT properties of a
hart node. NR_CPUS comparison seems out of place.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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Currently, logical CPU id to physical hartid mapping is defined for both
smp and non-smp configurations. This is not required as we need this
only for smp configuration. The mapping function can define directly
boot_cpu_hartid for non-smp use case.
The reverse mapping function i.e. hartid to cpuid can be called for any
valid but not booted harts. So it should return default cpu 0 only if it
is a boot hartid.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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In SMP path, __cpu_up waits for other CPU to come online indefinitely.
This is wrong as other CPU might be disabled in machine mode and
possible CPU is set to the cpus present in DT.
Introduce a completion variable and waits only for a second.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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Al Viro root-caused a race where the IOCB_CMD_POLL handling of
fget/fput() could cause us to access the file pointer after it had
already been freed:
"In more details - normally IOCB_CMD_POLL handling looks so:
1) io_submit(2) allocates aio_kiocb instance and passes it to
aio_poll()
2) aio_poll() resolves the descriptor to struct file by req->file =
fget(iocb->aio_fildes)
3) aio_poll() sets ->woken to false and raises ->ki_refcnt of that
aio_kiocb to 2 (bumps by 1, that is).
4) aio_poll() calls vfs_poll(). After sanity checks (basically,
"poll_wait() had been called and only once") it locks the queue.
That's what the extra reference to iocb had been for - we know we
can safely access it.
5) With queue locked, we check if ->woken has already been set to
true (by aio_poll_wake()) and, if it had been, we unlock the
queue, drop a reference to aio_kiocb and bugger off - at that
point it's a responsibility to aio_poll_wake() and the stuff
called/scheduled by it. That code will drop the reference to file
in req->file, along with the other reference to our aio_kiocb.
6) otherwise, we see whether we need to wait. If we do, we unlock the
queue, drop one reference to aio_kiocb and go away - eventual
wakeup (or cancel) will deal with the reference to file and with
the other reference to aio_kiocb
7) otherwise we remove ourselves from waitqueue (still under the
queue lock), so that wakeup won't get us. No async activity will
be happening, so we can safely drop req->file and iocb ourselves.
If wakeup happens while we are in vfs_poll(), we are fine - aio_kiocb
won't get freed under us, so we can do all the checks and locking
safely. And we don't touch ->file if we detect that case.
However, vfs_poll() most certainly *does* touch the file it had been
given. So wakeup coming while we are still in ->poll() might end up
doing fput() on that file. That case is not too rare, and usually we
are saved by the still present reference from descriptor table - that
fput() is not the final one.
But if another thread closes that descriptor right after our fget()
and wakeup does happen before ->poll() returns, we are in trouble -
final fput() done while we are in the middle of a method:
Al also wrote a patch to take an extra reference to the file descriptor
to fix this, but I instead suggested we just streamline the whole file
pointer handling by submit_io() so that the generic aio submission code
simply keeps the file pointer around until the aio has completed.
Fixes: bfe4037e722e ("aio: implement IOCB_CMD_POLL")
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: syzbot+503d4cc169fcec1cb18c@syzkaller.appspotmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some of these macros were conflicting with global namespace,
hence prefixing them with CXGB4.
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2019-03-04
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add AF_XDP support to libbpf. Rationale is to facilitate writing
AF_XDP applications by offering higher-level APIs that hide many
of the details of the AF_XDP uapi. Sample programs are converted
over to this new interface as well, from Magnus.
2) Introduce a new cant_sleep() macro for annotation of functions
that cannot sleep and use it in BPF_PROG_RUN() to assert that
BPF programs run under preemption disabled context, from Peter.
3) Introduce per BPF prog stats in order to monitor the usage
of BPF; this is controlled by kernel.bpf_stats_enabled sysctl
knob where monitoring tools can make use of this to efficiently
determine the average cost of programs, from Alexei.
4) Split up BPF selftest's test_progs similarly as we already
did with test_verifier. This allows to further reduce merge
conflicts in future and to get more structure into our
quickly growing BPF selftest suite, from Stanislav.
5) Fix a bug in BTF's dedup algorithm which can cause an infinite
loop in some circumstances; also various BPF doc fixes and
improvements, from Andrii.
6) Various BPF sample cleanups and migration to libbpf in order
to further isolate the old sample loader code (so we can get
rid of it at some point), from Jakub.
7) Add a new BPF helper for BPF cgroup skb progs that allows
to set ECN CE code point and a Host Bandwidth Manager (HBM)
sample program for limiting the bandwidth used by v2 cgroups,
from Lawrence.
8) Enable write access to skb->queue_mapping from tc BPF egress
programs in order to let BPF pick TX queue, from Jesper.
9) Fix a bug in BPF spinlock handling for map-in-map which did
not propagate spin_lock_off to the meta map, from Yonghong.
10) Fix a bug in the new per-CPU BPF prog counters to properly
initialize stats for each CPU, from Eric.
11) Add various BPF helper prototypes to selftest's bpf_helpers.h,
from Willem.
12) Fix various BPF samples bugs in XDP and tracing progs,
from Toke, Daniel and Yonghong.
13) Silence preemption splat in test_bpf after BPF_PROG_RUN()
enforces it now everywhere, from Anders.
14) Fix a signedness bug in libbpf's btf_dedup_ref_type() to
get error handling working, from Dan.
15) Fix bpftool documentation and auto-completion with regards
to stream_{verdict,parser} attach types, from Alban.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds a warning (once) for any kernel dereference that has a user
exception handler, but accesses a non-canonical address. It basically
is a simpler - and more limited - version of commit 9da3f2b74054
("x86/fault: BUG() when uaccess helpers fault on kernel addresses") that
got reverted.
Note that unlike that original commit, this only causes a warning,
because there are real situations where we currently can do this
(notably speculative argument fetching for uprobes etc). Also, unlike
that original commit, this _only_ triggers for #GP accesses, so the
cases of valid kernel pointers that cross into a non-mapped page aren't
affected.
The intent of this is two-fold:
- the uprobe/tracing accesses really do need to be more careful. In
particular, from a portability standpoint it's just wrong to think
that "a pointer is a pointer", and use the same logic for any random
pointer value you find on the stack. It may _work_ on x86-64, but it
doesn't necessarily work on other architectures (where the same
pointer value can be either a kernel pointer _or_ a user pointer, and
you really need to be much more careful in how you try to access it)
The warning can hopefully end up being a reminder that just any
random pointer access won't do.
- Kees in particular wanted a way to actually report invalid uses of
wild pointers to user space accessors, instead of just silently
failing them. Automated fuzzers want a way to get reports if the
kernel ever uses invalid values that the fuzzer fed it.
The non-canonical address range is a fair chunk of the address space,
and with this you can teach syzkaller to feed in invalid pointer
values and find cases where we do not properly validate user
addresses (possibly due to bad uses of "set_fs()").
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Jann Horn <jannh@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* pm-opp:
cpufreq: OMAP: Register an Energy Model
cpufreq: imx6q: Register an Energy Model
opp: no need to check return value of debugfs_create functions
cpufreq: mediatek: Register an Energy Model
cpufreq: scmi: Register an Energy Model
cpufreq: arm_big_little: Register an Energy Model
cpufreq: scpi: Register an Energy Model
cpufreq: dt: Register an Energy Model
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* pm-cpufreq: (48 commits)
cpufreq: kryo: Release OPP tables on module removal
cpufreq: ap806: add missing of_node_put after of_device_is_available
cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies
cpufreq: Pass updated policy to driver ->setpolicy() callback
cpufreq: Fix two debug messages in cpufreq_set_policy()
cpufreq: Reorder and simplify cpufreq_update_policy()
cpufreq: Add kerneldoc comments for two core functions
cpufreq: intel_pstate: Rework iowait boosting to be less aggressive
cpufreq: intel_pstate: Eliminate intel_pstate_get_base_pstate()
cpufreq: intel_pstate: Avoid redundant initialization of local vars
cpufreq / cppc: Work around for Hisilicon CPPC cpufreq
ACPI / CPPC: Add a helper to get desired performance
cpufreq: davinci: move configuration to include/linux/platform_data
cpufreq: speedstep: convert BUG() to BUG_ON()
cpufreq: powernv: fix missing check of return value in init_powernv_pstates()
cpufreq: longhaul: remove unneeded semicolon
cpufreq: pcc-cpufreq: remove unneeded semicolon
cpufreq: Replace double NOT (!!) with single NOT (!)
cpufreq: intel_pstate: Add reasons for failure and debug messages
cpufreq: dt: Implement online/offline() callbacks
...
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* pm-cpuidle:
ACPI / processor: Set P_LVL{2,3} idle state descriptions
intel_idle: add support for Jacobsville
cpuidle: dt: bail out if the idle-state DT node is not compatible
cpuidle: use BIT() for idle state flags and remove CPUIDLE_DRIVER_FLAGS_MASK
Documentation: driver-api: PM: Add cpuidle document
cpuidle: New timer events oriented governor for tickless systems
* powercap:
powercap/intel_rapl: add Ice Lake mobile
powercap: intel_rapl: add support for Jacobsville
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* pm-core:
PM / core: Add support to skip power management in device/driver model
PM / suspend: Print debug messages for device using direct-complete
PM-runtime: update time accounting only when enabled
PM-runtime: Switch accounting over to ktime_get_mono_fast_ns()
PM-runtime: Optimize pm_runtime_autosuspend_expiration()
PM-runtime: Replace jiffies-based accounting with ktime-based accounting
PM-runtime: update accounting_timestamp on enable
PM: clock_ops: fix missing clk_prepare() return value check
drm/i915: Move on the new pm runtime interface
PM-runtime: Add new interface to get accounted time
* pm-sleep:
PM / wakeup: fix kerneldoc comment for pm_wakeup_dev_event()
* pm-qos:
PM: QoS: no need to check return value of debugfs_create functions
* pm-domains:
PM / Domains: Mark "name" const in dev_pm_domain_attach_by_name()
PM / Domains: Mark "name" const in genpd_dev_pm_attach_by_name()
PM: domains: no need to check return value of debugfs_create functions
* pm-em:
PM / EM: Expose the Energy Model in debugfs
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* acpi-video:
ACPI / video: Extend chassis-type detection with a "Lunch Box" check
ACPI / video: Refactor and fix dmi_is_desktop()
* acpi-x86:
ACPI / x86: Make PWM2 device always present at Lenovo Yoga Book
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* acpi-apei: (29 commits)
efi: cper: Fix possible out-of-bounds access
ACPI: APEI: Fix possible out-of-bounds access to BERT region
MAINTAINERS: Add James Morse to the list of APEI reviewers
ACPI / APEI: Add support for the SDEI GHES Notification type
firmware: arm_sdei: Add ACPI GHES registration helper
ACPI / APEI: Use separate fixmap pages for arm64 NMI-like notifications
ACPI / APEI: Only use queued estatus entry during in_nmi_queue_one_entry()
ACPI / APEI: Split ghes_read_estatus() to allow a peek at the CPER length
ACPI / APEI: Make GHES estatus header validation more user friendly
ACPI / APEI: Pass ghes and estatus separately to avoid a later copy
ACPI / APEI: Let the notification helper specify the fixmap slot
ACPI / APEI: Move locking to the notification helper
arm64: KVM/mm: Move SEA handling behind a single 'claim' interface
KVM: arm/arm64: Add kvm_ras.h to collect kvm specific RAS plumbing
ACPI / APEI: Switch NOTIFY_SEA to use the estatus queue
ACPI / APEI: Move NOTIFY_SEA between the estatus-queue and NOTIFY_NMI
ACPI / APEI: Don't allow ghes_ack_error() to mask earlier errors
ACPI / APEI: Generalise the estatus queue's notify code
ACPI / APEI: Don't update struct ghes' flags in read/clear estatus
ACPI / APEI: Remove spurious GHES_TO_CLEAR check
...
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* acpi-tables:
ACPI/PPTT: Add acpi_pptt_warn_missing() to consolidate logs
ACPI / tables: table override from built-in initrd
* acpi-debug:
ACPI: debug: Clean up acpi_aml_init()
ACPI: no need to check return value of debugfs_create functions
* acpi-ec:
Revert "ACPI / EC: Remove old CLEAR_ON_RESUME quirk"
ACPI: EC: Simplify boot EC checks in acpi_ec_add()
ACPI: EC: Eliminate acpi_config_boot_ec()
ACPI: EC: Make acpi_ec_dsdt_probe() more straightforward
ACPI: EC: Make acpi_ec_ecdt_probe() more straightforward
ACPI: EC: Declare boot_ec as static
ACPI: EC: Clean up probing for early EC
* acpi-dptf:
ACPI / DPTF: remove header search path to the parent directory
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