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With the recent rewrite of the fpu code exception handling for the
lfpc instruction within load_fpu_state() was erroneously removed.
Add it again to prevent that loading invalid floating point register
values cause an unhandled specification exception.
Fixes: 8c09871a950a ("s390/fpu: limit save and restore to used registers")
Cc: [email protected]
Reported-by: Aristeu Rozanski <[email protected]>
Tested-by: Aristeu Rozanski <[email protected]>
Reviewed-by: Vasily Gorbik <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Vasily Gorbik <[email protected]>
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USB-audio driver puts SNDRV_CHMAP_SL and _SR as left and right
surround channels for UAC1 channel map, respectively. But they should
have been SNDRV_CHMAP_RL and _RR; the current value *_SL and _SR are
rather "side" channels, not "surround". I guess I took those
mistakenly when I read the spec mentioning "surround left".
This patch corrects those entries to be the right channels.
Suggested-by: Sylvain BERTRAND <[email protected]>
Closes: https://lore.kernel.orgZ/qIyJD8lhd8hFhlC@freedom
Fixes: 04324ccc75f9 ("ALSA: usb-audio: add channel map support")
Cc: <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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NAU8822 codec PLL parameters are not an information that the general
user should care about, this print is supposed to be used for debugging,
adjust the debug print priority accordingly.
Signed-off-by: Francesco Dolcini <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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This driver is intended as a "client" end of the console connection.
When connected to a host it's supposed to receive debug logs, and
possibly allow to interact with whatever debug console is available
there. Feeding messages back, depending on a configuration may cause log
messages be executed as shell commands (which can be really bad if one
is unlucky, imagine a log message like "prevented running `rm -rf
/home`"). In case of Xen, it exposes sysrq-like debug interface, and
feeding it its own logs will pretty quickly hit 'R' for "instant
reboot".
Contrary to a classic serial console, the USB one cannot be configured
ahead of time, as the device shows up only when target OS is up. And at
the time device is opened to execute relevant ioctl, it's already too
late, especially when logs start flowing shortly after device is
initialized.
Avoid the issue by changing default to no echo for this type of devices.
Signed-off-by: Marek Marczykowski-Górecki <[email protected]>
[ johan: amend summary; disable also ECHONL ]
Cc: [email protected]
Signed-off-by: Johan Hovold <[email protected]>
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RPN with 127:127 is treated as a Null RPN, just to reset the
parameters, and it's not translated to MIDI2. Although the current
code can work as is in most cases, better to implement the RPN reset
explicitly for Null message.
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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Just like the core UMP conversion helper, we need to deal with the
partially-filled RPN/NRPN data in the sequencer UMP converter as
well.
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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The UMP core conversion helper API already defines the context needed
to record the bank and RPN/NRPN values, and we can simply re-use the
same struct instead of re-defining the same content as a different
name.
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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RPN with 127:127 is treated as a Null RPN, just to reset the
parameters, and it's not translated to MIDI2. Although the current
code can work as is in most cases, better to implement the RPN reset
explicitly for Null message.
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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The UMP 1.1 spec says that an RPN/NRPN should be sent when one of the
following occurs:
* a CC 38 is received
* a subsequent CC 6 is received
* a CC 98, 99, 100, and 101 is received, indicating the last RPN/NRPN
message has ended and a new one has started
That said, we should send a partial data even if it's not fully
filled. Let's change the UMP conversion helper code to follow that
rule.
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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uevent_show() wants to de-reference dev->driver->name. There is no clean
way for a device attribute to de-reference dev->driver unless that
attribute is defined via (struct device_driver).dev_groups. Instead, the
anti-pattern of taking the device_lock() in the attribute handler risks
deadlocks with code paths that remove device attributes while holding
the lock.
This deadlock is typically invisible to lockdep given the device_lock()
is marked lockdep_set_novalidate_class(), but some subsystems allocate a
local lockdep key for @dev->mutex to reveal reports of the form:
======================================================
WARNING: possible circular locking dependency detected
6.10.0-rc7+ #275 Tainted: G OE N
------------------------------------------------------
modprobe/2374 is trying to acquire lock:
ffff8c2270070de0 (kn->active#6){++++}-{0:0}, at: __kernfs_remove+0xde/0x220
but task is already holding lock:
ffff8c22016e88f8 (&cxl_root_key){+.+.}-{3:3}, at: device_release_driver_internal+0x39/0x210
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&cxl_root_key){+.+.}-{3:3}:
__mutex_lock+0x99/0xc30
uevent_show+0xac/0x130
dev_attr_show+0x18/0x40
sysfs_kf_seq_show+0xac/0xf0
seq_read_iter+0x110/0x450
vfs_read+0x25b/0x340
ksys_read+0x67/0xf0
do_syscall_64+0x75/0x190
entry_SYSCALL_64_after_hwframe+0x76/0x7e
-> #0 (kn->active#6){++++}-{0:0}:
__lock_acquire+0x121a/0x1fa0
lock_acquire+0xd6/0x2e0
kernfs_drain+0x1e9/0x200
__kernfs_remove+0xde/0x220
kernfs_remove_by_name_ns+0x5e/0xa0
device_del+0x168/0x410
device_unregister+0x13/0x60
devres_release_all+0xb8/0x110
device_unbind_cleanup+0xe/0x70
device_release_driver_internal+0x1c7/0x210
driver_detach+0x47/0x90
bus_remove_driver+0x6c/0xf0
cxl_acpi_exit+0xc/0x11 [cxl_acpi]
__do_sys_delete_module.isra.0+0x181/0x260
do_syscall_64+0x75/0x190
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The observation though is that driver objects are typically much longer
lived than device objects. It is reasonable to perform lockless
de-reference of a @driver pointer even if it is racing detach from a
device. Given the infrequency of driver unregistration, use
synchronize_rcu() in module_remove_driver() to close any potential
races. It is potentially overkill to suffer synchronize_rcu() just to
handle the rare module removal racing uevent_show() event.
Thanks to Tetsuo Handa for the debug analysis of the syzbot report [1].
Fixes: c0a40097f0bc ("drivers: core: synchronize really_probe() and dev_uevent()")
Reported-by: [email protected]
Reported-by: Tetsuo Handa <[email protected]>
Closes: http://lore.kernel.org/[email protected] [1]
Link: http://lore.kernel.org/[email protected]
Cc: [email protected]
Cc: Ashish Sangwan <[email protected]>
Cc: Namjae Jeon <[email protected]>
Cc: Dirk Behme <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
Link: https://lore.kernel.org/r/172081332794.577428.9738802016494057132.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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dev_err() format strings should end with '\n'. Several such
format strings in the spmi-pmic-arb driver are missing it.
Add newlines where needed.
Fixes: 02922ccbb330 ("spmi: pmic-arb: Register controller for bus instead of arbiter")
Signed-off-by: David Collins <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bjorn Andersson <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Currently, irqchips for all of the subnodes (which represent a given
bus master) point to the parent wrapper node. This is no bueno, as
no interrupts arrive, ever (because nothing references that node).
Fix that by passing a reference to the respective master's of_node.
Worth noting, this is a NOP for devices with only a single master
described.
Signed-off-by: Konrad Dybcio <[email protected]>
Link: https://lore.kernel.org/r/20240522-topic-spmi_multi_master_irqfix-v2-1-7ec92a862b9f@linaro.org
Reviewed-by: Abel Vesa <[email protected]>
Tested-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Fixes: 02922ccbb330 ("spmi: pmic-arb: Register controller for bus instead of arbiter")
Cc: [email protected]
Signed-off-by: Stephen Boyd <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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36c55ce8703c ("binder_alloc: Replace kcalloc with kvcalloc to
mitigate OOM issues") introduced schedule while atomic issue.
[ 2689.152635][ T4275] BUG: sleeping function called from invalid context at mm/vmalloc.c:2847
[ 2689.161291][ T4275] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4275, name: kworker/1:140
[ 2689.170708][ T4275] preempt_count: 1, expected: 0
[ 2689.175572][ T4275] RCU nest depth: 0, expected: 0
[ 2689.180521][ T4275] INFO: lockdep is turned off.
[ 2689.180523][ T4275] Preemption disabled at:
[ 2689.180525][ T4275] [<ffffffe031f2a2dc>] binder_alloc_deferred_release+0x2c/0x388
..
..
[ 2689.213419][ T4275] __might_resched+0x174/0x178
[ 2689.213423][ T4275] __might_sleep+0x48/0x7c
[ 2689.213426][ T4275] vfree+0x4c/0x15c
[ 2689.213430][ T4275] kvfree+0x24/0x44
[ 2689.213433][ T4275] binder_alloc_deferred_release+0x2c0/0x388
[ 2689.213436][ T4275] binder_proc_dec_tmpref+0x15c/0x2a8
[ 2689.213440][ T4275] binder_deferred_func+0xa8/0x8ec
[ 2689.213442][ T4275] process_one_work+0x254/0x59c
[ 2689.213447][ T4275] worker_thread+0x274/0x3ec
[ 2689.213450][ T4275] kthread+0x110/0x134
[ 2689.213453][ T4275] ret_from_fork+0x10/0x20
Fix it by moving the place of kvfree outside of spinlock context.
Fixes: 36c55ce8703c ("binder_alloc: Replace kcalloc with kvcalloc to mitigate OOM issues")
Acked-by: Carlos Llamas <[email protected]>
Signed-off-by: Mukesh Ojha <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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In commit 15d9da3f818c ("binder: use bitmap for faster descriptor
lookup"), it was incorrectly assumed that references to the context
manager node should always get descriptor zero assigned to them.
However, if the context manager dies and a new process takes its place,
then assigning descriptor zero to the new context manager might lead to
collisions, as there could still be references to the older node. This
issue was reported by syzbot with the following trace:
kernel BUG at drivers/android/binder.c:1173!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 447 Comm: binder-util Not tainted 6.10.0-rc6-00348-g31643d84b8c3 #10
Hardware name: linux,dummy-virt (DT)
pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : binder_inc_ref_for_node+0x500/0x544
lr : binder_inc_ref_for_node+0x1e4/0x544
sp : ffff80008112b940
x29: ffff80008112b940 x28: ffff0e0e40310780 x27: 0000000000000000
x26: 0000000000000001 x25: ffff0e0e40310738 x24: ffff0e0e4089ba34
x23: ffff0e0e40310b00 x22: ffff80008112bb50 x21: ffffaf7b8f246970
x20: ffffaf7b8f773f08 x19: ffff0e0e4089b800 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 000000002de4aa60
x14: 0000000000000000 x13: 2de4acf000000000 x12: 0000000000000020
x11: 0000000000000018 x10: 0000000000000020 x9 : ffffaf7b90601000
x8 : ffff0e0e48739140 x7 : 0000000000000000 x6 : 000000000000003f
x5 : ffff0e0e40310b28 x4 : 0000000000000000 x3 : ffff0e0e40310720
x2 : ffff0e0e40310728 x1 : 0000000000000000 x0 : ffff0e0e40310710
Call trace:
binder_inc_ref_for_node+0x500/0x544
binder_transaction+0xf68/0x2620
binder_thread_write+0x5bc/0x139c
binder_ioctl+0xef4/0x10c8
[...]
This patch adds back the previous behavior of assigning the next
non-zero descriptor if references to previous context managers still
exist. It amends both strategies, the newer dbitmap code and also the
legacy slow_desc_lookup_olocked(), by allowing them to start looking
for available descriptors at a given offset.
Fixes: 15d9da3f818c ("binder: use bitmap for faster descriptor lookup")
Cc: [email protected]
Reported-and-tested-by: [email protected]
Closes: https://lore.kernel.org/all/[email protected]/
Reviewed-by: Alice Ryhl <[email protected]>
Signed-off-by: Carlos Llamas <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Since commit 1fffe7a34c89 ("script: modpost: emit a warning when the
description is missing"), a module without a MODULE_DESCRIPTION() will
result in a warning with make W=1. The following warnings are being
observed in drivers/char when CONFIG_ARCH_NETWINDER is enabled:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/ds1620.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/nwbutton.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/nwflash.o
Add the missing invocations of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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I found one more missing dependency in the new driver: when building
without CONFIG_PCI_IOV, pci_sriov_configure_simple() cannot be
called directly:
drivers/misc/mrvl_cn10k_dpi.c: In function 'dpi_remove':
include/linux/stddef.h:9:14: error: called object is not a function or function pointer
9 | #define NULL ((void *)0)
| ^
include/linux/pci.h:2416:41: note: in expansion of macro 'NULL'
2416 | #define pci_sriov_configure_simple NULL
| ^~~~
drivers/misc/mrvl_cn10k_dpi.c:652:9: note: in expansion of macro 'pci_sriov_configure_simple'
652 | pci_sriov_configure_simple(pdev, 0);
Add this to the Kconfig file as well.
Fixes: 5f67eef6dff3 ("misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver")
Signed-off-by: Arnd Bergmann <[email protected]>
Tested-by: Vamsi Attunuru <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Currently, the devres-based management of ee1004_bus_data has
several issues when it comes to locking:
1. It does not call mutex_unlock() before returning an error.
2. When encountering an error, it deadlocks when trying to recursively
lock a mutex.
Fix this by moving the mutex-protected bus data initialization into
a separate function so that devm_add_action_or_reset() is called
without the mutex being held.
Reported-by: Dan Carpenter <[email protected]>
Fixes: 55d57ef6fa97 ("eeprom: ee1004: Use devres for bus data cleanup")
Signed-off-by: Armin Wolf <[email protected]>
Reviewed-by: Dan Carpenter <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-hub.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-aspeed.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-gpio.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-ast-cf.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-scom.o
Add the missing invocations of the MODULE_DESCRIPTION() macro, and fix the
copy/paste of the module description comment in fsi-master-ast-cf.c.
Reviewed-by: Eddie James <[email protected]>
Signed-off-by: Jeff Johnson <[email protected]>
Link: https://lore.kernel.org/r/20240730-module_description_orphans-v1-4-7094088076c8@quicinc.com
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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"early access" process
Over the past years there have been many "misunderstandings" and
"confusion" as to who is, and is not, allowed early access to the
changes created by the members of the embargoed hardware issue teams
working on a specific problem.
The current process, while it does work, is "difficult" for many
companies to understand and agree with. Because of this, there has been
numerous attempts by many companies to work around the process by lies,
subterfuge, and other side channels sometimes involving unsuspecting
lawyers. Cut all of that out, and put the responsibility of
distributing code on the silicon vendor affected, as they already have
legal agreements in place that cover this type of distribution. When
this distribution happens, the developers involved MUST be notified of
this happening, to be kept aware of the situation at all times.
The wording here has been hashed out by many different companies and
lawyers involved in the process, as well as community members and
everyone now agrees that the proposed change here should work better
than what is currently happening.
This change has been approved by a review from a large number of
different open source legal members, representing the companies involved
in this process.
Link: https://lore.kernel.org/r/2024073035-bagel-vertigo-e0dd@gregkh
Co-developed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Co-developed-by: Michael Dolan <[email protected]>
Signed-off-by: Michael Dolan <[email protected]>
Co-developed-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The embargoed-hardware-issues.rst file needed a bunch of minor grammar,
punctuation, and syntax cleanups based on feedback we have gotten over
the past few years. The main change here is the term "silicon" being
used over "hardware" to differentiate between companies that make a chip
(i.e. a CPU) and those that take the chip and put it into their system.
No process changes are made here at all, only clarification for the way
the current process works.
All of these changes have been approved by a review from a large number
of different open source legal members, representing the companies
involved in this process.
Acked-by: Jonathan Corbet <[email protected]>
Link: https://lore.kernel.org/r/2024073032-outsource-sniff-e8ea@gregkh
Co-developed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Co-developed-by: Michael Dolan <[email protected]>
Signed-off-by: Michael Dolan <[email protected]>
Co-developed-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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remove an extra quote from the doc comment so that rustdoc
no longer genertes a link to a nonexistent file.
Signed-off-by: Andrew Ballance <[email protected]>
Reviewed-by: Danilo Krummrich <[email protected]>
Acked-by: Miguel Ojeda <[email protected]>
Fixes: de6582833db0 ("rust: add firmware abstractions")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The following bug was triggered on a system built with
CONFIG_DEBUG_PREEMPT=y:
# echo p > /proc/sysrq-trigger
BUG: using smp_processor_id() in preemptible [00000000] code: sh/117
caller is perf_event_print_debug+0x1a/0x4c0
CPU: 3 UID: 0 PID: 117 Comm: sh Not tainted 6.11.0-rc1 #109
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x4f/0x60
check_preemption_disabled+0xc8/0xd0
perf_event_print_debug+0x1a/0x4c0
__handle_sysrq+0x140/0x180
write_sysrq_trigger+0x61/0x70
proc_reg_write+0x4e/0x70
vfs_write+0xd0/0x430
? handle_mm_fault+0xc8/0x240
ksys_write+0x9c/0xd0
do_syscall_64+0x96/0x190
entry_SYSCALL_64_after_hwframe+0x4b/0x53
This is because the commit d4b294bf84db ("perf/x86: Hybrid PMU support
for counters") took smp_processor_id() outside the irq critical section.
If a preemption occurs in perf_event_print_debug() and the task is
migrated to another cpu, we may get incorrect pmu debug information.
Move smp_processor_id() back inside the irq critical section to fix this
issue.
Fixes: d4b294bf84db ("perf/x86: Hybrid PMU support for counters")
Signed-off-by: Li Huafei <[email protected]>
Reviewed-and-tested-by: K Prateek Nayak <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Kan Liang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Per the example of:
!atomic_cmpxchg(&key->enabled, 0, 1)
the inverse was written as:
atomic_cmpxchg(&key->enabled, 1, 0)
except of course, that while !old is only true for old == 0, old is
true for everything except old == 0.
Fix it to read:
atomic_cmpxchg(&key->enabled, 1, 0) == 1
such that only the 1->0 transition returns true and goes on to disable
the keys.
Fixes: 83ab38ef0a0b ("jump_label: Fix concurrency issues in static_key_slow_dec()")
Reported-by: Darrick J. Wong <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Tested-by: Darrick J. Wong <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
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The recent fix for making the take over of the broadcast timer more
reliable retrieves a per CPU pointer in preemptible context.
This went unnoticed as compilers hoist the access into the non-preemptible
region where the pointer is actually used. But of course it's valid that
the compiler keeps it at the place where the code puts it which rightfully
triggers:
BUG: using smp_processor_id() in preemptible [00000000] code:
caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0
Move it to the actual usage site which is in a non-preemptible region.
Fixes: f7d43dd206e7 ("tick/broadcast: Make takeover of broadcast hrtimer reliable")
Reported-by: David Wang <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Yu Liao <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/all/87ttg56ers.ffs@tglx
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conmakehash uses getenv("abs_srctree") from the environment to strip
the absolute path from the generated sources.
However since commit e2bad142bb3d ("kbuild: unexport abs_srctree and
abs_objtree") this environment variable no longer gets set.
Instead use basename() to indicate the used file in a comment of the
generated source file.
Fixes: 3bd85c6c97b2 ("tty: vt: conmakehash: Don't mention the full path of the input in output")
Cc: stable <[email protected]>
Signed-off-by: Max Krummenacher <[email protected]>
Link: https://lore.kernel.org/stable/20240725132056.9151-1-max.oss.09%40gmail.com
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Merge fixes for the int340x thermal driver handling of MSI IRQs:
- Fix MSI error path cleanup in int340x, allow it to work with a
subset of thermal MSI IRQs if some of them are not working and
make it free all MSI IRQs on module exit (Srinivas Pandruvada).
* thermal-intel:
thermal: intel: int340x: Free MSI IRQ vectors on module exit
thermal: intel: int340x: Allow limited thermal MSI support
thermal: intel: int340x: Fix kernel warning during MSI cleanup
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When enabling access to the special register set, Receiver time-out and
RHR interrupts can happen. In this case, the IRQ handler will try to read
from the FIFO thru the RHR register at address 0x00, but address 0x00 is
mapped to DLL register, resulting in erroneous FIFO reading.
Call graph example:
sc16is7xx_startup(): entry
sc16is7xx_ms_proc(): entry
sc16is7xx_set_termios(): entry
sc16is7xx_set_baud(): DLH/DLL = $009C --> access special register set
sc16is7xx_port_irq() entry --> IIR is 0x0C
sc16is7xx_handle_rx() entry
sc16is7xx_fifo_read(): --> unable to access FIFO (RHR) because it is
mapped to DLL (LCR=LCR_CONF_MODE_A)
sc16is7xx_set_baud(): exit --> Restore access to general register set
Fix the problem by claiming the efr_lock mutex when accessing the Special
register set.
Fixes: dfeae619d781 ("serial: sc16is7xx")
Cc: [email protected]
Signed-off-by: Hugo Villeneuve <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Sometimes, when a packet is received on channel A at almost the same time
as a packet is about to be transmitted on channel B, we observe with a
logic analyzer that the received packet on channel A is transmitted on
channel B. In other words, the Tx buffer data on channel B is corrupted
with data from channel A.
The problem appeared since commit 4409df5866b7 ("serial: sc16is7xx: change
EFR lock to operate on each channels"), which changed the EFR locking to
operate on each channel instead of chip-wise.
This commit has introduced a regression, because the EFR lock is used not
only to protect the EFR registers access, but also, in a very obscure and
undocumented way, to protect access to the data buffer, which is shared by
the Tx and Rx handlers, but also by each channel of the IC.
Fix this regression first by switching to kfifo_out_linear_ptr() in
sc16is7xx_handle_tx() to eliminate the need for a shared Rx/Tx buffer.
Secondly, replace the chip-wise Rx buffer with a separate Rx buffer for
each channel.
Fixes: 4409df5866b7 ("serial: sc16is7xx: change EFR lock to operate on each channels")
Cc: [email protected]
Signed-off-by: Hugo Villeneuve <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Say there are 3 trip points A, B, C sorted in ascending temperature
order with no hysteresis. If the zone temerature is exactly equal to
B, thermal_zone_set_trips() will set the boundaries to A and C and the
hardware will not catch any crossing of B (either way) until either A
or C is crossed and the boundaries are changed.
To avoid that, use non-strict inequalities when comparing the trip
threshold to the zone temperature in thermal_zone_set_trips().
In the example above, it will cause both boundaries to be set to B,
which is desirable because an interrupt will trigger when the zone
temperature becomes different from B regardless of which way it goes.
That will allow a new interval to be set depending on the direction of
the zone temperature change.
Fixes: 893bae92237d ("thermal: trip: Make thermal_zone_set_trips() use trip thresholds")
Signed-off-by: Rafael J. Wysocki <[email protected]>
Link: https://patch.msgid.link/[email protected]
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Calling ioctl TIOCSSERIAL with an invalid baud_base can
result in uartclk being zero, which will result in a
divide by zero error in uart_get_divisor(). The check for
uartclk being zero in uart_set_info() needs to be done
before other settings are made as subsequent calls to
ioctl TIOCSSERIAL for the same port would be impacted if
the uartclk check was done where uartclk gets set.
Oops: divide error: 0000 PREEMPT SMP KASAN PTI
RIP: 0010:uart_get_divisor (drivers/tty/serial/serial_core.c:580)
Call Trace:
<TASK>
serial8250_get_divisor (drivers/tty/serial/8250/8250_port.c:2576
drivers/tty/serial/8250/8250_port.c:2589)
serial8250_do_set_termios (drivers/tty/serial/8250/8250_port.c:502
drivers/tty/serial/8250/8250_port.c:2741)
serial8250_set_termios (drivers/tty/serial/8250/8250_port.c:2862)
uart_change_line_settings (./include/linux/spinlock.h:376
./include/linux/serial_core.h:608 drivers/tty/serial/serial_core.c:222)
uart_port_startup (drivers/tty/serial/serial_core.c:342)
uart_startup (drivers/tty/serial/serial_core.c:368)
uart_set_info (drivers/tty/serial/serial_core.c:1034)
uart_set_info_user (drivers/tty/serial/serial_core.c:1059)
tty_set_serial (drivers/tty/tty_io.c:2637)
tty_ioctl (drivers/tty/tty_io.c:2647 drivers/tty/tty_io.c:2791)
__x64_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:907
fs/ioctl.c:893 fs/ioctl.c:893)
do_syscall_64 (arch/x86/entry/common.c:52
(discriminator 1) arch/x86/entry/common.c:83 (discriminator 1))
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
Reported-by: syzkaller <[email protected]>
Cc: [email protected]
Signed-off-by: George Kennedy <[email protected]>
Rule: add
Link: https://lore.kernel.org/stable/1721148848-9784-1-git-send-email-george.kennedy%40oracle.com
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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If the IFS scan test exits prematurely due to a timeout before
completing a single run, the union ifs_status remains uninitialized,
leading to incorrect test status reporting. To prevent this, always
initialize the union ifs_status to zero.
Fixes: 2b40e654b73a ("platform/x86/intel/ifs: Add scan test support")
Suggested-by: Ilpo Järvinen <[email protected]>
Reviewed-by: Jithu Joseph <[email protected]>
Reviewed-by: Ashok Raj <[email protected]>
Signed-off-by: Kuppuswamy Sathyanarayanan <[email protected]>
Link: https://lore.kernel.org/r/20240730155930.1754744-1-sathyanarayanan.kuppuswamy@linux.intel.com
Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Ilpo Järvinen <[email protected]>
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There were a few instances of typos that lead could to confusion
when reading. The following words have been corrected:
Binay -> Binary
singe -> single
chaged -> changed
Signed-off-by: Luis Felipe Hernandez <[email protected]>
Reviewed-by: Armin Wolf <[email protected]>
Acked-by: Randy Dunlap <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Ilpo Järvinen <[email protected]>
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Commit 7ba5ca32fe6e ("ALSA: firewire-lib: operate for period elapse event
in process context") removed the process context workqueue from
amdtp_domain_stream_pcm_pointer() and update_pcm_pointers() to remove
its overhead.
With RME Fireface 800, this lead to a regression since
Kernels 5.14.0, causing an AB/BA deadlock competition for the
substream lock with eventual system freeze under ALSA operation:
thread 0:
* (lock A) acquire substream lock by
snd_pcm_stream_lock_irq() in
snd_pcm_status64()
* (lock B) wait for tasklet to finish by calling
tasklet_unlock_spin_wait() in
tasklet_disable_in_atomic() in
ohci_flush_iso_completions() of ohci.c
thread 1:
* (lock B) enter tasklet
* (lock A) attempt to acquire substream lock,
waiting for it to be released:
snd_pcm_stream_lock_irqsave() in
snd_pcm_period_elapsed() in
update_pcm_pointers() in
process_ctx_payloads() in
process_rx_packets() of amdtp-stream.c
? tasklet_unlock_spin_wait
</NMI>
<TASK>
ohci_flush_iso_completions firewire_ohci
amdtp_domain_stream_pcm_pointer snd_firewire_lib
snd_pcm_update_hw_ptr0 snd_pcm
snd_pcm_status64 snd_pcm
? native_queued_spin_lock_slowpath
</NMI>
<IRQ>
_raw_spin_lock_irqsave
snd_pcm_period_elapsed snd_pcm
process_rx_packets snd_firewire_lib
irq_target_callback snd_firewire_lib
handle_it_packet firewire_ohci
context_tasklet firewire_ohci
Restore the process context work queue to prevent deadlock
AB/BA deadlock competition for ALSA substream lock of
snd_pcm_stream_lock_irq() in snd_pcm_status64()
and snd_pcm_stream_lock_irqsave() in snd_pcm_period_elapsed().
revert commit 7ba5ca32fe6e ("ALSA: firewire-lib: operate for period
elapse event in process context")
Replace inline description to prevent future deadlock.
Cc: [email protected]
Fixes: 7ba5ca32fe6e ("ALSA: firewire-lib: operate for period elapse event in process context")
Reported-by: edmund.raile <[email protected]>
Closes: https://lore.kernel.org/r/kwryofzdmjvzkuw6j3clftsxmoolynljztxqwg76hzeo4simnl@jn3eo7pe642q/
Signed-off-by: Edmund Raile <[email protected]>
Reviewed-by: Takashi Sakamoto <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Link: https://patch.msgid.link/[email protected]
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prepare resolution of AB/BA deadlock competition for substream lock:
restore workqueue previously used for process context:
revert commit b5b519965c4c ("ALSA: firewire-lib: obsolete workqueue
for period update")
Cc: [email protected]
Link: https://lore.kernel.org/r/kwryofzdmjvzkuw6j3clftsxmoolynljztxqwg76hzeo4simnl@jn3eo7pe642q/
Signed-off-by: Edmund Raile <[email protected]>
Reviewed-by: Takashi Sakamoto <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Link: https://patch.msgid.link/[email protected]
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There shouldn't be a ; at the end of the function, delete it.
Signed-off-by: Harshit Mogalapalli <[email protected]>
Reviewed-by: Javier Carrasco <[email protected]>
Reviewed-by: Heikki Krogerus <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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release_firmware() already frees fw, fix this my moving release_firmware
after the dereference.
Fixes: 916b8e5fa73d ("usb: typec: tipd: add error log to provide firmware name and size")
Signed-off-by: Harshit Mogalapalli <[email protected]>
Reviewed-by: Heikki Krogerus <[email protected]>
Reviewed-by: Javier Carrasco <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Upstream commit aba3a8d01d62 ("usb: gadget: u_serial: add suspend
resume callbacks") added started_delayed flag, so that new ports
which are opened after USB suspend can start IO while resuming.
But if the port was already opened, and gadget suspend kicks in
afterwards, start_delayed will never be set. This causes resume
to bail out before calling gs_start_io(). Fix this by setting
start_delayed during suspend.
Fixes: aba3a8d01d62 ("usb: gadget: u_serial: add suspend resume callbacks")
Cc: [email protected]
Signed-off-by: Prashanth K <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The tcpci_check_std_output_cap() function is supposed to return negative
error codes but it's declared as type bool so the error handling doesn't
work. Declare it as an int instead.
Fixes: 62ce9ef14797 ("usb: typec: tcpci: add support to set connector orientation")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Heikki Krogerus <[email protected]>
Reviewed-by: Marco Felsch <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Currently, the driver will happily register the switch/mux devices, and
so long as the i2c master doesn't complain, the user would never know
there's something wrong.
Add a device id check (based on [1]) and return -ENODEV if the read
fails or returns nonsense.
Checking the value on a Qualcomm SM6115P-based Lenovo Tab P11 tablet,
the ID mentioned in the datasheet does indeed show up:
fsa4480 1-0042: Found FSA4480 v1.1 (Vendor ID = 0)
[1] https://www.onsemi.com/pdf/datasheet/fsa4480-d.pdf
Fixes: 1dc246320c6b ("usb: typec: mux: Add On Semi fsa4480 driver")
Cc: stable <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Signed-off-by: Konrad Dybcio <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Make sure the descriptor has been set before looking at maxpacket.
This fixes a null pointer panic in this case.
This may happen if the gadget doesn't properly set up the endpoint
for the current speed, or the gadget descriptors are malformed and
the descriptor for the speed/endpoint are not found.
No current gadget driver is known to have this problem, but this
may cause a hard-to-find bug during development of new gadgets.
Fixes: 54f83b8c8ea9 ("USB: gadget: Reject endpoints with 0 maxpacket value")
Cc: [email protected]
Signed-off-by: Chris Wulff <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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At a few places the driver carries stale pointers
to references that can still be used. Make sure that does not happen.
This strictly speaking closes ZDI-CAN-22273, though there may be
similar races in the driver.
Signed-off-by: Oliver Neukum <[email protected]>
Cc: stable <[email protected]>
Acked-by: Shuah Khan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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config_ep_by_speed.
These functions can fail if descriptors are malformed, or missing,
for the selected USB speed.
Fixes: eb9fecb9e69b ("usb: gadget: f_uac2: split out audio core")
Fixes: 24f779dac8f3 ("usb: gadget: f_uac2/u_audio: add feedback endpoint support")
Cc: [email protected]
Signed-off-by: Chris Wulff <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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When the block number 0xff is given to Function Block Discovery
message, the device should return the information of all Function
Blocks, but currently the gadget driver treats it as an error.
Implement the proper behavior for the block 0xff instead.
Fixes: 8b645922b223 ("usb: gadget: Add support for USB MIDI 2.0 function driver")
Cc: [email protected]
Signed-off-by: Takashi Iwai <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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USB2517 is a 7-port variant of this USB hub. Add an USB compatible
based on USB vendor & product ID.
Signed-off-by: Alexander Stein <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial updates for 6.11-rc1
Here are the USB-serial updates for 6.11-rc1, including:
- add missing module descriptions
- add flexible array annotation in garmin_gps
Included are also various clean ups.
All have been in linux-next with no reported issues.
* tag 'usb-serial-6.11-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: garmin_gps: use struct_size() to allocate pkt
USB: serial: garmin_gps: annotate struct garmin_packet with __counted_by
USB: serial: add missing MODULE_DESCRIPTION() macros
USB: serial: spcp8x5: remove unused struct 'spcp8x5_usb_ctrl_arg'
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix regression in extent map rework when handling insertion of
overlapping compressed extent
- fix unexpected file length when appending to a file using direct io
and buffer not faulted in
- in zoned mode, fix accounting of unusable space when flipping
read-only block group back to read-write
- fix page locking when COWing an inline range, assertion failure found
by syzbot
- fix calculation of space info in debugging print
- tree-checker, add validation of data reference item
- fix a few -Wmaybe-uninitialized build warnings
* tag 'for-6.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: initialize location to fix -Wmaybe-uninitialized in btrfs_lookup_dentry()
btrfs: fix corruption after buffer fault in during direct IO append write
btrfs: zoned: fix zone_unusable accounting on making block group read-write again
btrfs: do not subtract delalloc from avail bytes
btrfs: make cow_file_range_inline() honor locked_page on error
btrfs: fix corrupt read due to bad offset of a compressed extent map
btrfs: tree-checker: validate dref root and objectid
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git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools fixes from Namhyung Kim:
"Some more build fixes and a random crash fix:
- Fix cross-build by setting pkg-config env according to the arch
- Fix static build for missing library dependencies
- Fix Segfault when callchain has no symbols"
* tag 'perf-tools-fixes-for-v6.11-2024-07-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
perf docs: Document cross compilation
perf: build: Link lib 'zstd' for static build
perf: build: Link lib 'lzma' for static build
perf: build: Only link libebl.a for old libdw
perf: build: Set Python configuration for cross compilation
perf: build: Setup PKG_CONFIG_LIBDIR for cross compilation
perf tool: fix dereferencing NULL al->maps
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
ice: fix AF_XDP ZC timeout and concurrency issues
Maciej Fijalkowski says:
Changes included in this patchset address an issue that customer has
been facing when AF_XDP ZC Tx sockets were used in combination with flow
control and regular Tx traffic.
After executing:
ethtool --set-priv-flags $dev link-down-on-close on
ethtool -A $dev rx on tx on
launching multiple ZC Tx sockets on $dev + pinging remote interface (so
that regular Tx traffic is present) and then going through down/up of
$dev, Tx timeout occurred and then most of the time ice driver was unable
to recover from that state.
These patches combined together solve the described above issue on
customer side. Main focus here is to forbid producing Tx descriptors when
either carrier is not yet initialized or process of bringing interface
down has already started.
v1: https://lore.kernel.org/netdev/[email protected]/
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
ice: xsk: fix txq interrupt mapping
ice: add missing WRITE_ONCE when clearing ice_rx_ring::xdp_prog
ice: improve updating ice_{t,r}x_ring::xsk_pool
ice: toggle netif_carrier when setting up XSK pool
ice: modify error handling when setting XSK pool in ndo_bpf
ice: replace synchronize_rcu with synchronize_net
ice: don't busy wait for Rx queue disable in ice_qp_dis()
ice: respect netif readiness in AF_XDP ZC related ndo's
====================
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Tighten csum_start and csum_offset checks in virtio_net_hdr_to_skb
for GSO packets.
The function already checks that a checksum requested with
VIRTIO_NET_HDR_F_NEEDS_CSUM is in skb linear. But for GSO packets
this might not hold for segs after segmentation.
Syzkaller demonstrated to reach this warning in skb_checksum_help
offset = skb_checksum_start_offset(skb);
ret = -EINVAL;
if (WARN_ON_ONCE(offset >= skb_headlen(skb)))
By injecting a TSO packet:
WARNING: CPU: 1 PID: 3539 at net/core/dev.c:3284 skb_checksum_help+0x3d0/0x5b0
ip_do_fragment+0x209/0x1b20 net/ipv4/ip_output.c:774
ip_finish_output_gso net/ipv4/ip_output.c:279 [inline]
__ip_finish_output+0x2bd/0x4b0 net/ipv4/ip_output.c:301
iptunnel_xmit+0x50c/0x930 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x2296/0x2c70 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x759/0xa60 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4850 [inline]
netdev_start_xmit include/linux/netdevice.h:4864 [inline]
xmit_one net/core/dev.c:3595 [inline]
dev_hard_start_xmit+0x261/0x8c0 net/core/dev.c:3611
__dev_queue_xmit+0x1b97/0x3c90 net/core/dev.c:4261
packet_snd net/packet/af_packet.c:3073 [inline]
The geometry of the bad input packet at tcp_gso_segment:
[ 52.003050][ T8403] skb len=12202 headroom=244 headlen=12093 tailroom=0
[ 52.003050][ T8403] mac=(168,24) mac_len=24 net=(192,52) trans=244
[ 52.003050][ T8403] shinfo(txflags=0 nr_frags=1 gso(size=1552 type=3 segs=0))
[ 52.003050][ T8403] csum(0x60000c7 start=199 offset=1536
ip_summed=3 complete_sw=0 valid=0 level=0)
Mitigate with stricter input validation.
csum_offset: for GSO packets, deduce the correct value from gso_type.
This is already done for USO. Extend it to TSO. Let UFO be:
udp[46]_ufo_fragment ignores these fields and always computes the
checksum in software.
csum_start: finding the real offset requires parsing to the transport
header. Do not add a parser, use existing segmentation parsing. Thanks
to SKB_GSO_DODGY, that also catches bad packets that are hw offloaded.
Again test both TSO and USO. Do not test UFO for the above reason, and
do not test UDP tunnel offload.
GSO packet are almost always CHECKSUM_PARTIAL. USO packets may be
CHECKSUM_NONE since commit 10154dbded6d6 ("udp: Allow GSO transmit
from devices with no checksum offload"), but then still these fields
are initialized correctly in udp4_hwcsum/udp6_hwcsum_outgoing. So no
need to test for ip_summed == CHECKSUM_PARTIAL first.
This revises an existing fix mentioned in the Fixes tag, which broke
small packets with GSO offload, as detected by kselftests.
Link: https://syzkaller.appspot.com/bug?extid=e1db31216c789f552871
Link: https://lore.kernel.org/netdev/[email protected]
Fixes: e269d79c7d35 ("net: missing check virtio")
Cc: [email protected]
Signed-off-by: Willem de Bruijn <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Commit 708405f3e56e ("net: phy: aquantia: wait for the GLOBAL_CFG to
start returning real values") introduced a workaround for an issue
observed on aqr115c. However there were never any reports of it
happening on other models and the workaround has been reported to cause
and issue on aqr113c (and it may cause the same on any other model not
supporting 10M mode).
Let's limit the impact of the workaround to aqr113, aqr113c and aqr115c
and poll the 100M GLOBAL_CFG register instead as both models are known
to support it correctly.
Reported-by: Jon Hunter <[email protected]>
Closes: https://lore.kernel.org/lkml/[email protected]/
Fixes: 708405f3e56e ("net: phy: aquantia: wait for the GLOBAL_CFG to start returning real values")
Tested-by: Jon Hunter <[email protected]>
Signed-off-by: Bartosz Golaszewski <[email protected]>
Reviewed-by: Antoine Tenart <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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