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commit 55037ed7bdc62151a726f5685f88afa6a82959b1 upstream.
Add include guard wrapper define to uapi/linux/stddef.h to prevent macro
redefinition errors when stddef.h is included more than once. This was not
needed before since the only contents already used a redefinition test.
Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Link: https://lore.kernel.org/r/20220329171252.57279-1-tadeusz.struk@linaro.org
Fixes: 50d7bd38c3aa ("stddef: Introduce struct_group() helper macro")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 81cd7e8489278d28794e7b272950c3e00c344e44 ]
Avoid resetting the module-wide i8042_platform_device pointer in
i8042_probe() or i8042_remove(), so that the device can be properly
destroyed by i8042_exit() on module unload.
Fixes: 9222ba68c3f4 ("Input: i8042 - add deferred probe support")
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Link: https://lore.kernel.org/r/20221109034148.23821-1-chenjun102@huawei.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 5dd7caf0bdc5d0bae7cf9776b4d739fb09bd5ebb ]
In __unregister_kprobe_top(), if the currently unregistered probe has
post_handler but other child probes of the aggrprobe do not have
post_handler, the post_handler of the aggrprobe is cleared. If this is
a ftrace-based probe, there is a problem. In later calls to
disarm_kprobe(), we will use kprobe_ftrace_ops because post_handler is
NULL. But we're armed with kprobe_ipmodify_ops. This triggers a WARN in
__disarm_kprobe_ftrace() and may even cause use-after-free:
Failed to disarm kprobe-ftrace at kernel_clone+0x0/0x3c0 (error -2)
WARNING: CPU: 5 PID: 137 at kernel/kprobes.c:1135 __disarm_kprobe_ftrace.isra.21+0xcf/0xe0
Modules linked in: testKprobe_007(-)
CPU: 5 PID: 137 Comm: rmmod Not tainted 6.1.0-rc4-dirty #18
[...]
Call Trace:
<TASK>
__disable_kprobe+0xcd/0xe0
__unregister_kprobe_top+0x12/0x150
? mutex_lock+0xe/0x30
unregister_kprobes.part.23+0x31/0xa0
unregister_kprobe+0x32/0x40
__x64_sys_delete_module+0x15e/0x260
? do_user_addr_fault+0x2cd/0x6b0
do_syscall_64+0x3a/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
[...]
For the kprobe-on-ftrace case, we keep the post_handler setting to
identify this aggrprobe armed with kprobe_ipmodify_ops. This way we
can disarm it correctly.
Link: https://lore.kernel.org/all/20221112070000.35299-1-lihuafei1@huawei.com/
Fixes: 0bc11ed5ab60 ("kprobes: Allow kprobes coexist with livepatch")
Reported-by: Zhao Gongyi <zhaogongyi@huawei.com>
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Li Huafei <lihuafei1@huawei.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e208a1d795a08d1ac0398c79ad9c58106531bcc5 ]
If device_register() fails in sdebug_add_host_helper(), it will goto clean
and sdbg_host will be freed, but sdbg_host->host_list will not be removed
from sdebug_host_list, then list traversal may cause UAF. Fix it.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221117084421.58918-1-yuancan@huawei.com
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit bc68e428d4963af0201e92159629ab96948f0893 ]
If device_register() fails in tcm_loop_setup_hba_bus(), the name allocated
by dev_set_name() need be freed. As comment of device_register() says, it
should use put_device() to give up the reference in the error path. So fix
this by calling put_device(), then the name can be freed in kobject_cleanup().
The 'tl_hba' will be freed in tcm_loop_release_adapter(), so it don't need
goto error label in this case.
Fixes: 3703b2c5d041 ("[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221115015042.3652261-1-yangyingliang@huawei.com
Reviewed-by: Mike Christie <michael.chritie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 58e0be1ef6118c5352b56a4d06e974c5599993a5 ]
kernel test robot reported warnings when build bonding module with
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/net/bonding/:
from ../drivers/net/bonding/bond_main.c:35:
In function ‘fortify_memcpy_chk’,
inlined from ‘iph_to_flow_copy_v4addrs’ at ../include/net/ip.h:566:2,
inlined from ‘bond_flow_ip’ at ../drivers/net/bonding/bond_main.c:3984:3:
../include/linux/fortify-string.h:413:25: warning: call to ‘__read_overflow2_field’ declared with attribute warning: detected read beyond size of f
ield (2nd parameter); maybe use struct_group()? [-Wattribute-warning]
413 | __read_overflow2_field(q_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ‘fortify_memcpy_chk’,
inlined from ‘iph_to_flow_copy_v6addrs’ at ../include/net/ipv6.h:900:2,
inlined from ‘bond_flow_ip’ at ../drivers/net/bonding/bond_main.c:3994:3:
../include/linux/fortify-string.h:413:25: warning: call to ‘__read_overflow2_field’ declared with attribute warning: detected read beyond size of f
ield (2nd parameter); maybe use struct_group()? [-Wattribute-warning]
413 | __read_overflow2_field(q_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is because we try to copy the whole ip/ip6 address to the flow_key,
while we only point the to ip/ip6 saddr. Note that since these are UAPI
headers, __struct_group() is used to avoid the compiler warnings.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: c3f8324188fa ("net: Add full IPv6 addresses to flow_keys")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://lore.kernel.org/r/20221115142400.1204786-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 50d7bd38c3aafc4749e05e8d7fcb616979143602 ]
Kernel code has a regular need to describe groups of members within a
structure usually when they need to be copied or initialized separately
from the rest of the surrounding structure. The generally accepted design
pattern in C is to use a named sub-struct:
struct foo {
int one;
struct {
int two;
int three, four;
} thing;
int five;
};
This would allow for traditional references and sizing:
memcpy(&dst.thing, &src.thing, sizeof(dst.thing));
However, doing this would mean that referencing struct members enclosed
by such named structs would always require including the sub-struct name
in identifiers:
do_something(dst.thing.three);
This has tended to be quite inflexible, especially when such groupings
need to be added to established code which causes huge naming churn.
Three workarounds exist in the kernel for this problem, and each have
other negative properties.
To avoid the naming churn, there is a design pattern of adding macro
aliases for the named struct:
#define f_three thing.three
This ends up polluting the global namespace, and makes it difficult to
search for identifiers.
Another common work-around in kernel code avoids the pollution by avoiding
the named struct entirely, instead identifying the group's boundaries using
either a pair of empty anonymous structs of a pair of zero-element arrays:
struct foo {
int one;
struct { } start;
int two;
int three, four;
struct { } finish;
int five;
};
struct foo {
int one;
int start[0];
int two;
int three, four;
int finish[0];
int five;
};
This allows code to avoid needing to use a sub-struct named for member
references within the surrounding structure, but loses the benefits of
being able to actually use such a struct, making it rather fragile. Using
these requires open-coded calculation of sizes and offsets. The efforts
made to avoid common mistakes include lots of comments, or adding various
BUILD_BUG_ON()s. Such code is left with no way for the compiler to reason
about the boundaries (e.g. the "start" object looks like it's 0 bytes
in length), making bounds checking depend on open-coded calculations:
if (length > offsetof(struct foo, finish) -
offsetof(struct foo, start))
return -EINVAL;
memcpy(&dst.start, &src.start, offsetof(struct foo, finish) -
offsetof(struct foo, start));
However, the vast majority of places in the kernel that operate on
groups of members do so without any identification of the grouping,
relying either on comments or implicit knowledge of the struct contents,
which is even harder for the compiler to reason about, and results in
even more fragile manual sizing, usually depending on member locations
outside of the region (e.g. to copy "two" and "three", use the start of
"four" to find the size):
BUILD_BUG_ON((offsetof(struct foo, four) <
offsetof(struct foo, two)) ||
(offsetof(struct foo, four) <
offsetof(struct foo, three));
if (length > offsetof(struct foo, four) -
offsetof(struct foo, two))
return -EINVAL;
memcpy(&dst.two, &src.two, length);
In order to have a regular programmatic way to describe a struct
region that can be used for references and sizing, can be examined for
bounds checking, avoids forcing the use of intermediate identifiers,
and avoids polluting the global namespace, introduce the struct_group()
macro. This macro wraps the member declarations to create an anonymous
union of an anonymous struct (no intermediate name) and a named struct
(for references and sizing):
struct foo {
int one;
struct_group(thing,
int two;
int three, four;
);
int five;
};
if (length > sizeof(src.thing))
return -EINVAL;
memcpy(&dst.thing, &src.thing, length);
do_something(dst.three);
There are some rare cases where the resulting struct_group() needs
attributes added, so struct_group_attr() is also introduced to allow
for specifying struct attributes (e.g. __align(x) or __packed).
Additionally, there are places where such declarations would like to
have the struct be tagged, so struct_group_tagged() is added.
Given there is a need for a handful of UAPI uses too, the underlying
__struct_group() macro has been defined in UAPI so it can be used there
too.
To avoid confusing scripts/kernel-doc, hide the macro from its struct
parsing.
Co-developed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/lkml/20210728023217.GC35706@embeddedor
Enhanced-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/lkml/41183a98-bdb9-4ad6-7eab-5a7292a6df84@rasmusvillemoes.dk
Enhanced-by: Dan Williams <dan.j.williams@intel.com>
Link: https://lore.kernel.org/lkml/1d9a2e6df2a9a35b2cdd50a9a68cac5991e7e5f0.camel@intel.com
Enhanced-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lore.kernel.org/lkml/YQKa76A6XuFqgM03@phenom.ffwll.local
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Stable-dep-of: 58e0be1ef611 ("net: use struct_group to copy ip/ipv6 header addresses")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 7b960c967f2aa01ab8f45c5a0bd78e754cffdeee ]
Commit 05b35e7eb9a1 ("smsc95xx: add phylib support") amended
smsc95xx_resume() to call phy_init_hw(). That function waits for the
device to runtime resume even though it is placed in the runtime resume
path, causing a deadlock.
The problem is that phy_init_hw() calls down to smsc95xx_mdiobus_read(),
which never uses the _nopm variant of usbnet_read_cmd().
Commit b4df480f68ae ("usbnet: smsc95xx: add reset_resume function with
reset operation") causes a similar deadlock on resume if the device was
already runtime suspended when entering system sleep:
That's because the commit introduced smsc95xx_reset_resume(), which
calls down to smsc95xx_reset(), which neglects to use _nopm accessors.
Fix by auto-detecting whether a device access is performed by the
suspend/resume task_struct and use the _nopm variant if so. This works
because the PM core guarantees that suspend/resume callbacks are run in
task context.
Stacktrace for posterity:
INFO: task kworker/2:1:49 blocked for more than 122 seconds.
Workqueue: usb_hub_wq hub_event
schedule
rpm_resume
__pm_runtime_resume
usb_autopm_get_interface
usbnet_read_cmd
__smsc95xx_read_reg
__smsc95xx_phy_wait_not_busy
__smsc95xx_mdio_read
smsc95xx_mdiobus_read
__mdiobus_read
mdiobus_read
smsc_phy_reset
phy_init_hw
smsc95xx_resume
usb_resume_interface
usb_resume_both
usb_runtime_resume
__rpm_callback
rpm_callback
rpm_resume
__pm_runtime_resume
usb_autoresume_device
hub_event
process_one_work
Fixes: b4df480f68ae ("usbnet: smsc95xx: add reset_resume function with reset operation")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v3.16+
Cc: Andre Edich <andre.edich@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 31029a8b2c7e656a0289194ef16415050ae4c4ac ]
The function ring_buffer_nr_dirty_pages() was created to find out how many
pages are filled in the ring buffer. There's two running counters. One is
incremented whenever a new page is touched (pages_touched) and the other
is whenever a page is read (pages_read). The dirty count is the number
touched minus the number read. This is used to determine if a blocked task
should be woken up if the percentage of the ring buffer it is waiting for
is hit.
The problem is that it does not take into account dropped pages (when the
new writes overwrite pages that were not read). And then the dirty pages
will always be greater than the percentage.
This makes the "buffer_percent" file inaccurate, as the number of dirty
pages end up always being larger than the percentage, event when it's not
and this causes user space to be woken up more than it wants to be.
Add a new counter to keep track of lost pages, and include that in the
accounting of dirty pages so that it is actually accurate.
Link: https://lkml.kernel.org/r/20221021123013.55fb6055@gandalf.local.home
Fixes: 2c2b0a78b3739 ("ring-buffer: Add percentage of ring buffer full to wake up reader")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 69e16d01d1de4f1249869de342915f608feb55d5 ]
l2tp_tunnel_register() registers a tunnel without fully
initializing its attribute. This can allow another kernel thread
running l2tp_xmit_core() to access the uninitialized data and
then cause a kernel NULL pointer dereference error, as shown below.
Thread 1 Thread 2
//l2tp_tunnel_register()
list_add_rcu(&tunnel->list, &pn->l2tp_tunnel_list);
//pppol2tp_connect()
tunnel = l2tp_tunnel_get(sock_net(sk), info.tunnel_id);
// Fetch the new tunnel
...
//l2tp_xmit_core()
struct sock *sk = tunnel->sock;
...
bh_lock_sock(sk);
//Null pointer error happens
tunnel->sock = sk;
Fix this bug by initializing tunnel->sock before adding the
tunnel into l2tp_tunnel_list.
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Sishuai Gong <sishuai@purdue.edu>
Reported-by: Sishuai Gong <sishuai@purdue.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: b68777d54fac ("l2tp: Serialize access to sk_user_data with sk_callback_lock")
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 1e866afd4bcdd01a70a5eddb4371158d3035ce03 upstream.
The subsystem reset writes to a register, so we have to ensure the
device state is capable of handling that otherwise the driver may access
unmapped registers. Use the state machine to ensure the subsystem reset
doesn't try to write registers on a device already undergoing this type
of reset.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214771
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 23e085b2dead13b51fe86d27069895b740f749c0 upstream.
The passthrough commands already have this restriction, but the other
operations do not. Require the same capabilities for all users as all of
these operations, which include resets and rescans, can be disruptive.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ce0d998be9274dd3a3d971cbeaa6fe28fd2c3062 upstream.
Deal with errata TGL052, ADL037 and RPL017 "Trace May Contain Incorrect
Data When Configured With Single Range Output Larger Than 4KB" by
disabling single range output whenever larger than 4KB.
Fixes: 670638477aed ("perf/x86/intel/pt: Opportunistically use single range output mode")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20221112151508.13768-1-adrian.hunter@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e5b0d06d9b10f5f43101bd6598b076c347f9295f upstream.
`struct vmci_event_qp` allocated by qp_notify_peer() contains padding,
which may carry uninitialized data to the userspace, as observed by
KMSAN:
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user ./include/linux/instrumented.h:121
instrument_copy_to_user ./include/linux/instrumented.h:121
_copy_to_user+0x5f/0xb0 lib/usercopy.c:33
copy_to_user ./include/linux/uaccess.h:169
vmci_host_do_receive_datagram drivers/misc/vmw_vmci/vmci_host.c:431
vmci_host_unlocked_ioctl+0x33d/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:925
vfs_ioctl fs/ioctl.c:51
...
Uninit was stored to memory at:
kmemdup+0x74/0xb0 mm/util.c:131
dg_dispatch_as_host drivers/misc/vmw_vmci/vmci_datagram.c:271
vmci_datagram_dispatch+0x4f8/0xfc0 drivers/misc/vmw_vmci/vmci_datagram.c:339
qp_notify_peer+0x19a/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1479
qp_broker_attach drivers/misc/vmw_vmci/vmci_queue_pair.c:1662
qp_broker_alloc+0x2977/0x2f30 drivers/misc/vmw_vmci/vmci_queue_pair.c:1750
vmci_qp_broker_alloc+0x96/0xd0 drivers/misc/vmw_vmci/vmci_queue_pair.c:1940
vmci_host_do_alloc_queuepair drivers/misc/vmw_vmci/vmci_host.c:488
vmci_host_unlocked_ioctl+0x24fd/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:927
...
Local variable ev created at:
qp_notify_peer+0x54/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1456
qp_broker_attach drivers/misc/vmw_vmci/vmci_queue_pair.c:1662
qp_broker_alloc+0x2977/0x2f30 drivers/misc/vmw_vmci/vmci_queue_pair.c:1750
Bytes 28-31 of 48 are uninitialized
Memory access of size 48 starts at ffff888035155e00
Data copied to user address 0000000020000100
Use memset() to prevent the infoleaks.
Also speculatively fix qp_notify_peer_local(), which may suffer from the
same problem.
Reported-by: syzbot+39be4da489ed2493ba25@syzkaller.appspotmail.com
Cc: stable <stable@kernel.org>
Fixes: 06164d2b72aa ("VMCI: queue pairs implementation.")
Signed-off-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Vishnu Dasa <vdasa@vmware.com>
Link: https://lore.kernel.org/r/20221104175849.2782567-1-glider@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 222cfa0118aa68687ace74aab8fdf77ce8fbd7e6 upstream.
pci_get_device() will increase the reference count for the returned
pci_dev. We need to use pci_dev_put() to decrease the reference count
before amd_probe() returns. There is no problem for the 'smbus_dev ==
NULL' branch because pci_dev_put() can also handle the NULL input
parameter case.
Fixes: 659c9bc114a8 ("mmc: sdhci-pci: Build o2micro support in the same module")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221114083100.149200-1-wangxiongfeng2@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 096cc0cddf58232bded309336961784f1d1c85f8 upstream.
The SD card is recognized failed sometimes when resume from suspend.
Because CD# debounce time too long then card present report wrong.
Finally, card is recognized failed.
Signed-off-by: Chevron Li <chevron.li@bayhubtech.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221104095512.4068-1-chevron.li@bayhubtech.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 39a72dbfe188291b156dd6523511e3d5761ce775 upstream.
In mmc_select_voltage(), if there is no full power cycle, the voltage
range selected at the end of the function will be on a single range
(e.g. 3.3V/3.4V). To keep a range around the selected voltage (3.2V/3.4V),
the mask shift should be reduced by 1.
This issue was triggered by using a specific SD-card (Verbatim Premium
16GB UHS-1) on an STM32MP157C-DK2 board. This board cannot do UHS modes
and there is no power cycle. And the card was failing to switch to
high-speed mode. When adding the range 3.2V/3.3V for this card with the
proposed shift change, the card can switch to high-speed mode.
Fixes: ce69d37b7d8f ("mmc: core: Prevent violation of specs while initializing cards")
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221028073740.7259-1-yann.gautier@foss.st.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 65946690ed8d972fdb91a74ee75ac0f0f0d68321 upstream.
The coreboot_table driver registers a coreboot bus while probing a
"coreboot_table" device representing the coreboot table memory region.
Probing this device (i.e., registering the bus) is a dependency for the
module_init() functions of any driver for this bus (e.g.,
memconsole-coreboot.c / memconsole_driver_init()).
With synchronous probe, this dependency works OK, as the link order in
the Makefile ensures coreboot_table_driver_init() (and thus,
coreboot_table_probe()) completes before a coreboot device driver tries
to add itself to the bus.
With asynchronous probe, however, coreboot_table_probe() may race with
memconsole_driver_init(), and so we're liable to hit one of these two:
1. coreboot_driver_register() eventually hits "[...] the bus was not
initialized.", and the memconsole driver fails to register; or
2. coreboot_driver_register() gets past #1, but still races with
bus_register() and hits some other undefined/crashing behavior (e.g.,
in driver_find() [1])
We can resolve this by registering the bus in our initcall, and only
deferring "device" work (scanning the coreboot memory region and
creating sub-devices) to probe().
[1] Example failure, using 'driver_async_probe=*' kernel command line:
[ 0.114217] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
...
[ 0.114307] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc1 #63
[ 0.114316] Hardware name: Google Scarlet (DT)
...
[ 0.114488] Call trace:
[ 0.114494] _raw_spin_lock+0x34/0x60
[ 0.114502] kset_find_obj+0x28/0x84
[ 0.114511] driver_find+0x30/0x50
[ 0.114520] driver_register+0x64/0x10c
[ 0.114528] coreboot_driver_register+0x30/0x3c
[ 0.114540] memconsole_driver_init+0x24/0x30
[ 0.114550] do_one_initcall+0x154/0x2e0
[ 0.114560] do_initcall_level+0x134/0x160
[ 0.114571] do_initcalls+0x60/0xa0
[ 0.114579] do_basic_setup+0x28/0x34
[ 0.114588] kernel_init_freeable+0xf8/0x150
[ 0.114596] kernel_init+0x2c/0x12c
[ 0.114607] ret_from_fork+0x10/0x20
[ 0.114624] Code: 5280002b 1100054a b900092a f9800011 (885ffc01)
[ 0.114631] ---[ end trace 0000000000000000 ]---
Fixes: b81e3140e412 ("firmware: coreboot: Make bus registration symmetric")
Cc: <stable@vger.kernel.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20221019180934.1.If29e167d8a4771b0bf4a39c89c6946ed764817b9@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7fc961cf7ffcb130c4e93ee9a5628134f9de700a upstream.
SRS cap is the hardware cap telling if the hardware IOMMU can support
requests seeking supervisor privilege or not. SRE bit in scalable-mode
PASID table entry is treated as Reserved(0) for implementation not
supporting SRS cap.
Checking SRS cap before setting SRE bit can avoid the non-recoverable
fault of "Non-zero reserved field set in PASID Table Entry" caused by
setting SRE bit while there is no SRS cap support. The fault messages
look like below:
DMAR: DRHD: handling fault status reg 2
DMAR: [DMA Read NO_PASID] Request device [00:0d.0] fault addr 0x1154e1000
[fault reason 0x5a]
SM: Non-zero reserved field set in PASID Table Entry
Fixes: 6f7db75e1c46 ("iommu/vt-d: Add second level page table interface")
Cc: stable@vger.kernel.org
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Link: https://lore.kernel.org/r/20221115070346.1112273-1-tina.zhang@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20221116051544.26540-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0954256e970ecf371b03a6c9af2cf91b9c4085ff upstream.
We used to use the wrong type of integer in 'zfcp_fsf_req_send()' to cache
the FSF request ID when sending a new FSF request. This is used in case the
sending fails and we need to remove the request from our internal hash
table again (so we don't keep an invalid reference and use it when we free
the request again).
In 'zfcp_fsf_req_send()' we used to cache the ID as 'int' (signed and 32
bit wide), but the rest of the zfcp code (and the firmware specification)
handles the ID as 'unsigned long'/'u64' (unsigned and 64 bit wide [s390x
ELF ABI]). For one this has the obvious problem that when the ID grows
past 32 bit (this can happen reasonably fast) it is truncated to 32 bit
when storing it in the cache variable and so doesn't match the original ID
anymore. The second less obvious problem is that even when the original ID
has not yet grown past 32 bit, as soon as the 32nd bit is set in the
original ID (0x80000000 = 2'147'483'648) we will have a mismatch when we
cast it back to 'unsigned long'. As the cached variable is of a signed
type, the compiler will choose a sign-extending instruction to load the 32
bit variable into a 64 bit register (e.g.: 'lgf %r11,188(%r15)'). So once
we pass the cached variable into 'zfcp_reqlist_find_rm()' to remove the
request again all the leading zeros will be flipped to ones to extend the
sign and won't match the original ID anymore (this has been observed in
practice).
If we can't successfully remove the request from the hash table again after
'zfcp_qdio_send()' fails (this happens regularly when zfcp cannot notify
the adapter about new work because the adapter is already gone during
e.g. a ChpID toggle) we will end up with a double free. We unconditionally
free the request in the calling function when 'zfcp_fsf_req_send()' fails,
but because the request is still in the hash table we end up with a stale
memory reference, and once the zfcp adapter is either reset during recovery
or shutdown we end up freeing the same memory twice.
The resulting stack traces vary depending on the kernel and have no direct
correlation to the place where the bug occurs. Here are three examples that
have been seen in practice:
list_del corruption. next->prev should be 00000001b9d13800, but was 00000000dead4ead. (next=00000001bd131a00)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
monitor event: 0040 ilc:2 [#1] PREEMPT SMP
Modules linked in: ...
CPU: 9 PID: 1617 Comm: zfcperp0.0.1740 Kdump: loaded
Hardware name: ...
Krnl PSW : 0704d00180000000 00000003cbeea1f8 (__list_del_entry_valid+0x98/0x140)
R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: 00000000916d12f1 0000000080000000 000000000000006d 00000003cb665cd6
0000000000000001 0000000000000000 0000000000000000 00000000d28d21e8
00000000d3844000 00000380099efd28 00000001bd131a00 00000001b9d13800
00000000d3290100 0000000000000000 00000003cbeea1f4 00000380099efc70
Krnl Code: 00000003cbeea1e8: c020004f68a7 larl %r2,00000003cc8d7336
00000003cbeea1ee: c0e50027fd65 brasl %r14,00000003cc3e9cb8
#00000003cbeea1f4: af000000 mc 0,0
>00000003cbeea1f8: c02000920440 larl %r2,00000003cd12aa78
00000003cbeea1fe: c0e500289c25 brasl %r14,00000003cc3fda48
00000003cbeea204: b9040043 lgr %r4,%r3
00000003cbeea208: b9040051 lgr %r5,%r1
00000003cbeea20c: b9040032 lgr %r3,%r2
Call Trace:
[<00000003cbeea1f8>] __list_del_entry_valid+0x98/0x140
([<00000003cbeea1f4>] __list_del_entry_valid+0x94/0x140)
[<000003ff7ff502fe>] zfcp_fsf_req_dismiss_all+0xde/0x150 [zfcp]
[<000003ff7ff49cd0>] zfcp_erp_strategy_do_action+0x160/0x280 [zfcp]
[<000003ff7ff4a22e>] zfcp_erp_strategy+0x21e/0xca0 [zfcp]
[<000003ff7ff4ad34>] zfcp_erp_thread+0x84/0x1a0 [zfcp]
[<00000003cb5eece8>] kthread+0x138/0x150
[<00000003cb557f3c>] __ret_from_fork+0x3c/0x60
[<00000003cc4172ea>] ret_from_fork+0xa/0x40
INFO: lockdep is turned off.
Last Breaking-Event-Address:
[<00000003cc3e9d04>] _printk+0x4c/0x58
Kernel panic - not syncing: Fatal exception: panic_on_oops
or:
Unable to handle kernel pointer dereference in virtual kernel address space
Failing address: 6b6b6b6b6b6b6000 TEID: 6b6b6b6b6b6b6803
Fault in home space mode while using kernel ASCE.
AS:0000000063b10007 R3:0000000000000024
Oops: 0038 ilc:3 [#1] SMP
Modules linked in: ...
CPU: 10 PID: 0 Comm: swapper/10 Kdump: loaded
Hardware name: ...
Krnl PSW : 0404d00180000000 000003ff7febaf8e (zfcp_fsf_reqid_check+0x86/0x158 [zfcp])
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: 5a6f1cfa89c49ac3 00000000aff2c4c8 6b6b6b6b6b6b6b6b 00000000000002a8
0000000000000000 0000000000000055 0000000000000000 00000000a8515800
0700000000000000 00000000a6e14500 00000000aff2c000 000000008003c44c
000000008093c700 0000000000000010 00000380009ebba8 00000380009ebb48
Krnl Code: 000003ff7febaf7e: a7f4003d brc 15,000003ff7febaff8
000003ff7febaf82: e32020000004 lg %r2,0(%r2)
#000003ff7febaf88: ec2100388064 cgrj %r2,%r1,8,000003ff7febaff8
>000003ff7febaf8e: e3b020100020 cg %r11,16(%r2)
000003ff7febaf94: a774fff7 brc 7,000003ff7febaf82
000003ff7febaf98: ec280030007c cgij %r2,0,8,000003ff7febaff8
000003ff7febaf9e: e31020080004 lg %r1,8(%r2)
000003ff7febafa4: e33020000004 lg %r3,0(%r2)
Call Trace:
[<000003ff7febaf8e>] zfcp_fsf_reqid_check+0x86/0x158 [zfcp]
[<000003ff7febbdbc>] zfcp_qdio_int_resp+0x6c/0x170 [zfcp]
[<000003ff7febbf90>] zfcp_qdio_irq_tasklet+0xd0/0x108 [zfcp]
[<0000000061d90a04>] tasklet_action_common.constprop.0+0xdc/0x128
[<000000006292f300>] __do_softirq+0x130/0x3c0
[<0000000061d906c6>] irq_exit_rcu+0xfe/0x118
[<000000006291e818>] do_io_irq+0xc8/0x168
[<000000006292d516>] io_int_handler+0xd6/0x110
[<000000006292d596>] psw_idle_exit+0x0/0xa
([<0000000061d3be50>] arch_cpu_idle+0x40/0xd0)
[<000000006292ceea>] default_idle_call+0x52/0xf8
[<0000000061de4fa4>] do_idle+0xd4/0x168
[<0000000061de51fe>] cpu_startup_entry+0x36/0x40
[<0000000061d4faac>] smp_start_secondary+0x12c/0x138
[<000000006292d88e>] restart_int_handler+0x6e/0x90
Last Breaking-Event-Address:
[<000003ff7febaf94>] zfcp_fsf_reqid_check+0x8c/0x158 [zfcp]
Kernel panic - not syncing: Fatal exception in interrupt
or:
Unable to handle kernel pointer dereference in virtual kernel address space
Failing address: 523b05d3ae76a000 TEID: 523b05d3ae76a803
Fault in home space mode while using kernel ASCE.
AS:0000000077c40007 R3:0000000000000024
Oops: 0038 ilc:3 [#1] SMP
Modules linked in: ...
CPU: 3 PID: 453 Comm: kworker/3:1H Kdump: loaded
Hardware name: ...
Workqueue: kblockd blk_mq_run_work_fn
Krnl PSW : 0404d00180000000 0000000076fc0312 (__kmalloc+0xd2/0x398)
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: ffffffffffffffff 523b05d3ae76abf6 0000000000000000 0000000000092a20
0000000000000002 00000007e49b5cc0 00000007eda8f000 0000000000092a20
00000007eda8f000 00000003b02856b9 00000000000000a8 523b05d3ae76abf6
00000007dd662000 00000007eda8f000 0000000076fc02b2 000003e0037637a0
Krnl Code: 0000000076fc0302: c004000000d4 brcl 0,76fc04aa
0000000076fc0308: b904001b lgr %r1,%r11
#0000000076fc030c: e3106020001a algf %r1,32(%r6)
>0000000076fc0312: e31010000082 xg %r1,0(%r1)
0000000076fc0318: b9040001 lgr %r0,%r1
0000000076fc031c: e30061700082 xg %r0,368(%r6)
0000000076fc0322: ec59000100d9 aghik %r5,%r9,1
0000000076fc0328: e34003b80004 lg %r4,952
Call Trace:
[<0000000076fc0312>] __kmalloc+0xd2/0x398
[<0000000076f318f2>] mempool_alloc+0x72/0x1f8
[<000003ff8027c5f8>] zfcp_fsf_req_create.isra.7+0x40/0x268 [zfcp]
[<000003ff8027f1bc>] zfcp_fsf_fcp_cmnd+0xac/0x3f0 [zfcp]
[<000003ff80280f1a>] zfcp_scsi_queuecommand+0x122/0x1d0 [zfcp]
[<000003ff800b4218>] scsi_queue_rq+0x778/0xa10 [scsi_mod]
[<00000000771782a0>] __blk_mq_try_issue_directly+0x130/0x208
[<000000007717a124>] blk_mq_request_issue_directly+0x4c/0xa8
[<000003ff801302e2>] dm_mq_queue_rq+0x2ea/0x468 [dm_mod]
[<0000000077178c12>] blk_mq_dispatch_rq_list+0x33a/0x818
[<000000007717f064>] __blk_mq_do_dispatch_sched+0x284/0x2f0
[<000000007717f44c>] __blk_mq_sched_dispatch_requests+0x1c4/0x218
[<000000007717fa7a>] blk_mq_sched_dispatch_requests+0x52/0x90
[<0000000077176d74>] __blk_mq_run_hw_queue+0x9c/0xc0
[<0000000076da6d74>] process_one_work+0x274/0x4d0
[<0000000076da7018>] worker_thread+0x48/0x560
[<0000000076daef18>] kthread+0x140/0x160
[<000000007751d144>] ret_from_fork+0x28/0x30
Last Breaking-Event-Address:
[<0000000076fc0474>] __kmalloc+0x234/0x398
Kernel panic - not syncing: Fatal exception: panic_on_oops
To fix this, simply change the type of the cache variable to 'unsigned
long', like the rest of zfcp and also the argument for
'zfcp_reqlist_find_rm()'. This prevents truncation and wrong sign extension
and so can successfully remove the request from the hash table.
Fixes: e60a6d69f1f8 ("[SCSI] zfcp: Remove function zfcp_reqlist_find_safe")
Cc: <stable@vger.kernel.org> #v2.6.34+
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Link: https://lore.kernel.org/r/979f6e6019d15f91ba56182f1aaf68d61bf37fc6.1668595505.git.bblock@linux.ibm.com
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8678ea06852cd1f819b870c773d43df888d15d46 upstream.
If a page fault occurs while copying the first byte, this function resets one
byte before dst.
As a consequence, an address could be modified and leaded to kernel crashes if
case the modified address was accessed later.
Fixes: b58294ead14c ("maccess: allow architectures to provide kernel probing directly")
Signed-off-by: Alban Crequy <albancrequy@linux.microsoft.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Francis Laniel <flaniel@linux.microsoft.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org> [5.8]
Link: https://lore.kernel.org/bpf/20221110085614.111213-2-albancrequy@linux.microsoft.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b8ebf250997c5fb253582f42bfe98673801ebebd upstream.
syzbot is reporting uninitialized value at iforce_init_device() [1], for
commit 6ac0aec6b0a6 ("Input: iforce - allow callers supply data buffer
when fetching device IDs") is checking that valid length is shorter than
bytes to read. Since iforce_get_id_packet() stores valid length when
returning 0, the caller needs to check that valid length is longer than or
equals to bytes to read.
Reported-by: syzbot <syzbot+4dd880c1184280378821@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 6ac0aec6b0a6 ("Input: iforce - allow callers supply data buffer when fetching device IDs")
Link: https://lore.kernel.org/r/531fb432-7396-ad37-ecba-3e42e7f56d5c@I-love.SAKURA.ne.jp
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1bfcbe5805d0cfc83c3544dcd01e0a282c1f6790 upstream.
If the platform doesn't use DMA device filter (as is the case with
Elkhart Lake), whole lpss8250_dma_setup() setup is skipped. This
results in skipping also *_maxburst setup which is undesirable.
Refactor lpss8250_dma_setup() to configure DMA even if filter is not
setup.
Cc: stable <stable@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221108121952.5497-3-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1980860e0c8299316cddaf0992dd9e1258ec9d88 upstream.
Returning true from handle_rx_dma() without flushing DMA first creates
a data ordering hazard. If DMA Rx has handled any character at the
point when RLSI occurs, the non-DMA path handles any pending characters
jumping them ahead of those characters that are pending under DMA.
Fixes: 75df022b5f89 ("serial: 8250_dma: Fix RX handling")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221108121952.5497-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a931237cbea256aff13bb403da13a97b2d1605d9 upstream.
DW UART sometimes triggers IIR_RDI during DMA Rx when IIR_RX_TIMEOUT
should have been triggered instead. Since IIR_RDI has higher priority
than IIR_RX_TIMEOUT, this causes the Rx to hang into interrupt loop.
The problem seems to occur at least with some combinations of
small-sized transfers (I've reproduced the problem on Elkhart Lake PSE
UARTs).
If there's already an on-going Rx DMA and IIR_RDI triggers, fall
graciously back to non-DMA Rx. That is, behave as if IIR_RX_TIMEOUT had
occurred.
8250_omap already considers IIR_RDI similar to this change so its
nothing unheard of.
Fixes: 75df022b5f89 ("serial: 8250_dma: Fix RX handling")
Cc: <stable@vger.kernel.org>
Co-developed-by: Srikanth Thokala <srikanth.thokala@intel.com>
Signed-off-by: Srikanth Thokala <srikanth.thokala@intel.com>
Co-developed-by: Aman Kumar <aman.kumar@intel.com>
Signed-off-by: Aman Kumar <aman.kumar@intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221108121952.5497-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 4fe1ec995483737f3d2a14c3fe1d8fe634972979 upstream.
__list_versions will first estimate the required space using the
"dm_target_iterate(list_version_get_needed, &needed)" call and then will
fill the space using the "dm_target_iterate(list_version_get_info,
&iter_info)" call. Each of these calls locks the targets using the
"down_read(&_lock)" and "up_read(&_lock)" calls, however between the first
and second "dm_target_iterate" there is no lock held and the target
modules can be loaded at this point, so the second "dm_target_iterate"
call may need more space than what was the first "dm_target_iterate"
returned.
The code tries to handle this overflow (see the beginning of
list_version_get_info), however this handling is incorrect.
The code sets "param->data_size = param->data_start + needed" and
"iter_info.end = (char *)vers+len" - "needed" is the size returned by the
first dm_target_iterate call; "len" is the size of the buffer allocated by
userspace.
"len" may be greater than "needed"; in this case, the code will write up
to "len" bytes into the buffer, however param->data_size is set to
"needed", so it may write data past the param->data_size value. The ioctl
interface copies only up to param->data_size into userspace, thus part of
the result will be truncated.
Fix this bug by setting "iter_info.end = (char *)vers + needed;" - this
guarantees that the second "dm_target_iterate" call will write only up to
the "needed" buffer and it will exit with "DM_BUFFER_FULL_FLAG" if it
overflows the "needed" space - in this case, userspace will allocate a
larger buffer and retry.
Note that there is also a bug in list_version_get_needed - we need to add
"strlen(tt->name) + 1" to the needed size, not "strlen(tt->name)".
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ca1547ab15f48dc81624183ae17a2fd1bad06dfc upstream.
Add sentinel at end of maps to avoid potential array out of
bound access in iio core.
Fixes: 7abd9fb64682 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Link: https://lore.kernel.org/r/20221029093000.45451-4-sravanhome@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit efa17e90e1711bdb084e3954fa44afb6647331c0 upstream.
dev_set_name() allocates memory for name, it need be freed
when device_add() fails, call put_device() to give up the
reference that hold in device_initialize(), so that it can
be freed in kobject_cleanup() when the refcount hit to 0.
Fault injection test can trigger this:
unreferenced object 0xffff8e8340a7b4c0 (size 32):
comm "modprobe", pid 243, jiffies 4294678145 (age 48.845s)
hex dump (first 32 bytes):
69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge
72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............
backtrace:
[<0000000074999de8>] __kmem_cache_alloc_node+0x1e9/0x360
[<00000000497fd30b>] __kmalloc_node_track_caller+0x44/0x1a0
[<000000003636c520>] kstrdup+0x2d/0x60
[<0000000032f84da2>] kobject_set_name_vargs+0x1e/0x90
[<0000000092efe493>] dev_set_name+0x4e/0x70
Fixes: 1f785681a870 ("staging:iio:trigger sysfs userspace trigger rework.")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221022074212.1386424-1-yangyingliang@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 65f20301607d07ee279b0804d11a05a62a6c1a1c upstream.
If iio_trigger_register() returns error, it should call iio_trigger_free()
to give up the reference that hold in iio_trigger_alloc(), so that it can
call iio_trig_release() to free memory when the refcount hit to 0.
Fixes: 0e589d5fb317 ("ARM: AT91: IIO: Add AT91 ADC driver.")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221024084511.815096-1-yangyingliang@huawei.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 40bf8f162d0f95e0716e479d7db41443d931765c upstream.
There is no point to enter safe mode during DP/TBT configuration
if the DP/TBT was already configured in mux. This is because safe
mode is only applicable when there is a need to reconfigure the
pins in order to avoid damage within/to port partner.
In some chrome systems, IOM/mux is already configured before OS
comes up. Thus, when driver is probed, it blindly enters safe
mode due to PD negotiations but only after gfx driver lowers
dp_phy_ownership, will the IOM complete safe mode and send an
ack to PMC.
Since, that never happens, we see IPC timeout.
Hence, allow safe mode only when pin reconfiguration is not
required, which makes sense.
Fixes: 43d596e32276 ("usb: typec: intel_pmc_mux: Check the port status before connect")
Cc: stable <stable@kernel.org>
Signed-off-by: Rajat Khandelwal <rajat.khandelwal@linux.intel.com>
Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20221024171611.181468-1-rajat.khandelwal@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7a58b8d6021426b796eebfae80983374d9a80a75 upstream.
There is a deadlock in ci_otg_del_timer(), the process is
shown below:
(thread 1) | (thread 2)
ci_otg_del_timer() | ci_otg_hrtimer_func()
... |
spin_lock_irqsave() //(1) | ...
... |
hrtimer_cancel() | spin_lock_irqsave() //(2)
(block forever)
We hold ci->lock in position (1) and use hrtimer_cancel() to
wait ci_otg_hrtimer_func() to stop, but ci_otg_hrtimer_func()
also need ci->lock in position (2). As a result, the
hrtimer_cancel() in ci_otg_del_timer() will be blocked forever.
This patch extracts hrtimer_cancel() from the protection of
spin_lock_irqsave() in order that the ci_otg_hrtimer_func()
could obtain the ci->lock.
What`s more, there will be no race happen. Because the
"next_timer" is always under the protection of
spin_lock_irqsave() and we only check whether "next_timer"
equals to NUM_OTG_FSM_TIMERS in the following code.
Fixes: 3a316ec4c91c ("usb: chipidea: use hrtimer for otg fsm timers")
Cc: stable <stable@kernel.org>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://lore.kernel.org/r/20220918033312.94348-1-duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 181135bb20dcb184edd89817831b888eb8132741 upstream.
Before adding this quirk, this (mechanical keyboard) device would not be
recognized, logging:
new full-speed USB device number 56 using xhci_hcd
unable to read config index 0 descriptor/start: -32
chopping to 0 config(s)
It would take dozens of plugging/unpuggling cycles for the keyboard to
be recognized. Keyboard seems to simply work after applying this quirk.
This issue had been reported by users in two places already ([1], [2])
but nobody tried upstreaming a patch yet. After testing I believe their
suggested fix (DELAY_INIT + NO_LPM + DEVICE_QUALIFIER) was probably a
little overkill. I assume this particular combination was tested because
it had been previously suggested in [3], but only NO_LPM seems
sufficient for this device.
[1]: https://qiita.com/float168/items/fed43d540c8e2201b543
[2]: https://blog.kostic.dev/posts/making-the-realforce-87ub-work-with-usb30-on-Ubuntu/
[3]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678477
Cc: stable@vger.kernel.org
Signed-off-by: Nicolas Dumazet <ndumazet@google.com>
Link: https://lore.kernel.org/r/20221109122946.706036-1-ndumazet@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c1547f12df8b8e9ca2686accee43213ecd117efe upstream.
Add LARA-L6 PIDs for three different USB compositions.
LARA-L6 module can be configured (by AT interface) in three different
USB modes:
* Default mode (Vendor ID: 0x1546 Product ID: 0x1341) with 4 serial
interfaces
* RmNet mode (Vendor ID: 0x1546 Product ID: 0x1342) with 4 serial
interfaces and 1 RmNet virtual network interface
* CDC-ECM mode (Vendor ID: 0x1546 Product ID: 0x1343) with 4 serial
interface and 1 CDC-ECM virtual network interface
In default mode LARA-L6 exposes the following interfaces:
If 0: Diagnostic
If 1: AT parser
If 2: AT parser
If 3: AT parser/alternative functions
In RmNet mode LARA-L6 exposes the following interfaces:
If 0: Diagnostic
If 1: AT parser
If 2: AT parser
If 3: AT parset/alternative functions
If 4: RMNET interface
In CDC-ECM mode LARA-L6 exposes the following interfaces:
If 0: Diagnostic
If 1: AT parser
If 2: AT parser
If 3: AT parset/alternative functions
If 4: CDC-ECM interface
Signed-off-by: Davide Tronchin <davide.tronchin.94@gmail.com>
[ johan: drop PID defines in favour of comments ]
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d9e37a5c4d80ea25a7171ab8557a449115554e76 upstream.
The official LARA-R6 (00B) modem uses 0x908b PID. LARA-R6 00B does not
implement a QMI interface on port 4, the reservation (RSVD(4)) has been
added to meet other companies that implement QMI on that interface.
LARA-R6 00B USB composition exposes the following interfaces:
If 0: Diagnostic
If 1: AT parser
If 2: AT parser
If 3: AT parser/alternative functions
Signed-off-by: Davide Tronchin <davide.tronchin.94@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2ec106b96afc19698ff934323b633c0729d4c7f8 upstream.
Remove the UBLOX_PRODUCT_R6XX 0x90fa association since LARA-R6 00B final
product uses a new USB composition with different PID. 0x90fa PID used
only by LARA-R6 internal prototypes.
Move 0x90fa PID directly in the option_ids array since used by other
Qualcomm based modem vendors as pointed out in:
https://lore.kernel.org/all/6572c4e6-d8bc-b8d3-4396-d879e4e76338@gmail.com
Signed-off-by: Davide Tronchin <davide.tronchin.94@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit cd136706b4f925aa5d316642543babac90d45910 upstream.
What the code does is to not check the return value from
devm_gpiod_get() and then avoid using an erroneous GPIO descriptor
with IS_ERR_OR_NULL().
This will miss real errors from the GPIO core that should not be
ignored, such as probe deferral.
Instead request the GPIO as explicitly optional, which means that
if it doesn't exist, the descriptor returned will be NULL.
Then we can add error handling and also avoid just doing this on
the device tree path, and simplify the site where the optional
GPIO descriptor is used.
There were some problems with cleaning up this GPIO descriptor
use in the past, but this is the proper way to deal with it.
Cc: Rafał Miłecki <rafal@milecki.pl>
Cc: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20221107090753.1404679-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0fc801f8018000c8e64a275a20cb1da7c54e46df upstream.
This patch fixes a segfault by adding a null check on synth in
speakup_con_update(). The segfault can be reproduced as follows:
- Login into a text console
- Load speakup and speakup_soft modules
- Remove speakup_soft
- Switch to a graphics console
This is caused by lack of a null check on `synth` in
speakup_con_update().
Here's the sequence that causes the segfault:
- When we remove the speakup_soft, synth_release() sets the synth
to null.
- After that, when we change the virtual console to graphics
console, vt_notifier_call() is fired, which then calls
speakup_con_update().
- Inside speakup_con_update() there's no null check on synth,
so it calls synth_printf().
- Inside synth_printf(), synth_buffer_add() and synth_start(),
both access synth, when it is null and causing a segfault.
Therefore adding a null check on synth solves the issue.
Fixes: 2610df41489f ("staging: speakup: Add pause command used on switching to graphical mode")
Cc: stable <stable@kernel.org>
Signed-off-by: Mushahid Hussain <mushi.shar@gmail.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20221010165720.397042-1-mushi.shar@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5c294de36e7fb3e0cba0c4e1ef9a5f57bc080d0f upstream.
This reverts commit 6000b8d900cd5f52fbcd0776d0cc396e88c8c2ea.
The offending commit disabled the USB core PHY management as the dwc3
already manages the PHYs in question.
Unfortunately some platforms have started relying on having USB core
also controlling the PHY and this is specifically currently needed on
some Exynos platforms for PHY calibration or connected device may fail
to enumerate.
The PHY calibration was previously handled in the dwc3 driver, but to
work around some issues related to how the dwc3 driver interacts with
xhci (e.g. using multiple drivers) this was moved to USB core by commits
34c7ed72f4f0 ("usb: core: phy: add support for PHY calibration") and
a0a465569b45 ("usb: dwc3: remove generic PHY calibrate() calls").
The same PHY obviously should not be controlled from two different
places, which for example do no agree on the PHY mode or power state
during suspend, but as the offending patch was backported to stable,
let's revert it for now.
Reported-by: Stefan Agner <stefan@agner.ch>
Link: https://lore.kernel.org/lkml/808bdba846bb60456adf10a3016911ee@agner.ch/
Fixes: 6000b8d900cd ("usb: dwc3: disable USB core PHY management")
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20221103144648.14197-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1abfd71ee8f3ed99c5d0df5d9843a360541d6808 upstream.
Samsung Galaxy Book Pro 360 (13" 2021 NP930QBD-ke1US) with codec SSID
144d:c1a6 requires the same workaround for enabling the speaker amp
like other Samsung models with ALC298 codec.
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1205100
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221115170235.18875-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b18a456330e1c1ca207b57b45872f10336741388 upstream.
The Samsung Galaxy Book Pro seems to have the same issue as a few
other Samsung laptops, detailed in kernel bug report 207423. Sound from
headphone jack works, but not the built-in speakers.
alsa-info: http://alsa-project.org/db/?f=b40ba609dc6ae28dc84ad404a0d8a4bbcd8bea6d
Signed-off-by: Emil Flink <emil.flink@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221115144500.7782-1-emil.flink@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ad72c3c3f6eb81d2cb189ec71e888316adada5df upstream.
snd_usbmidi_output_open() has a check of the NULL port with
snd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened,
but in reality, the NULL port may be seen when the device gives an
invalid endpoint setup at the descriptor, hence the driver skips the
allocation. That is, the check itself is valid and snd_BUG_ON()
should be dropped from there. Otherwise it's confusing as if it were
a real bug, as recently syzbot stumbled on it.
Reported-by: syzbot+9abda841d636d86c41da@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/syzbot+9abda841d636d86c41da@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20221112141223.6144-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
