Pull s390 updates from Alexander Gordeev:
- Use CIO device online variable instead of the internal FSM state to
determine device availability during purge operations
- Remove extra check of task_stack_page() because try_get_task_stack()
already takes care of that when reading /proc/<pid>/wchan
- Allow user-space to use the new SCLP action qualifier 4 for to
provide NVMe SMART log data to the platform.
- Send AP CHANGE uevents on successful bind and successful association
to notify user-space about SE operations on AP queue devices
- Add an s390dbf kernel parameter to configure debug log levels and
area sizes during early boot
- On arm64 the empty zero page is going to be mapped read-only. Do the
same for s390 with an explicit set_memory_ro() call
- Improve s390-specific bcr_serialize() and cpu_relax() implementations
- Remove all unused variables to avoid allmodconfig W=1 build fails
with latest clang-23
- Cleanup default Kconfig values for s390 selftests
- Add a s390-tod trace clock to allow comparing trace timestamps
between different systems or virtual machines on s390
- Remove the s390 implementation of strlcat() in favor of the generic
variant
- Make consistent the calling order between
page_table_check_pte_clear() and secure page conversion across all
code paths
- Rearrange some fields within AP and zcrypt structs to reduce memory
consumption and unused holes
- Shorten GR_NUM and VX_NUM macros and move them to a separate header
- Replace __get_free_page() with kmalloc() in few sources
- Introduce an infrastructure for more efficient this_cpu operations.
Eliminate conditional branches when PREEMPT_NONE is removed
- Enable Rust support
- Use z10 as minimum architecture level, similar to the boot code, to
enforce a defined architecture level set
- Improve and convert various mem*() helper functions to C. For that
add .noinstr.text section to avoid orphaned warnings from the linker
- Fix the function pointer type in __ret_from_fork() to correct the
indirect call to match kernel thread return type of int
- Revert support for DCACHE_WORD_ACCESS to avoid an endless exception
loop on read from donated Ultravisor pages at unaligned addresses
* tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux: (52 commits)
s390: Revert support for DCACHE_WORD_ACCESS
s390/process: Fix kernel thread function pointer type
s390/tishift: Convert __ashlti3(), __ashrti3(), __lshrti3() to C
s390/memmove: Optimize backward copy case
s390/string: Convert memset(16|32|64)() to C
s390/string: Convert memcpy() to C
s390/string: Convert memset() to C
s390/string: Convert memmove() to C
s390/string: Add -ffreestanding compile option to string.o
s390: Add .noinstr.text to boot and purgatory linker scripts
s390/purgatory: Enforce z10 minimum architecture level
s390: Enable Rust support
s390/cmpxchg: Fix KASAN stack-out-of-bounds in atomic helpers
rust: helpers: Add memchr wrapper for string operations
rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts
s390/jump_label: Implement ARCH_STATIC_BRANCH_JUMP_ASM and ARCH_STATIC_BRANCH_ASM macros
s390/bug: Provide ARCH_WARN_ASM for Rust WARN/BUG support
s390/ap: Fix locking issue in SE bind and associate sysfs functions
s390/percpu: Provide arch_this_cpu_write() implementation
s390/percpu: Provide arch_this_cpu_read() implementation
...
Revisit and reorganize the locking and lock coverage of the
ap->lock spinlock as used in the two sysfs functions
se_bind_store() and se_associate_store().
A kernel run reported a possible deadlock situation, caused by
holding the spinlock (ap->lock) while triggering a uevent.
The fix rearranges the code protected by the spinlock by excluding
the uevent invocation, which does not require protection.
Additionally, the start of the protected region is moved earlier
to cover more lines, ensuring a consistent view of the AP queue
state between reading and updating its struct fields.
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
7.1.0-20260601.rc6.git12.516b5dbd4d4a.300.fc44.s390x+debug #1 Not tainted
-----------------------------------------------------
setupseguest.sh/11034 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire:
000001c991f498e8 (fs_reclaim){+.+.}-{0:0}, at: __kmalloc_cache_noprof+0x5a/0x6d0
and this task is already holding:
000000c4a1a12378 (&aq->lock){+.-.}-{2:2}, at: se_bind_store+0x96/0x3a0
which would create a new lock dependency:
(&aq->lock){+.-.}-{2:2} -> (fs_reclaim){+.+.}-{0:0}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&aq->lock){+.-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
_raw_spin_lock_bh+0x58/0xb0
ap_tasklet_fn+0x72/0xd0
tasklet_action_common+0x174/0x1b0
handle_softirqs+0x180/0x5c0
irq_exit_rcu+0x196/0x200
do_ext_irq+0x12a/0x4d0
ext_int_handler+0xc6/0xf0
folio_zero_user+0x1c6/0x240
folio_zero_user+0x182/0x240
vma_alloc_anon_folio_pmd+0xa0/0x1d0
__do_huge_pmd_anonymous_page+0x3a/0x200
__handle_mm_fault+0x56c/0x590
handle_mm_fault+0xa2/0x370
do_exception+0x292/0x590
__do_pgm_check+0x136/0x3e0
pgm_check_handler+0x114/0x160
to a SOFTIRQ-irq-unsafe lock:
(fs_reclaim){+.+.}-{0:0}
... which became SOFTIRQ-irq-unsafe at:
...
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
__fs_reclaim_acquire+0x44/0x50
fs_reclaim_acquire+0xbe/0x100
fs_reclaim_correct_nesting+0x20/0x70
dotest+0x5e/0x148
locking_selftest+0x2854/0x2a88
start_kernel+0x3b2/0x4f0
startup_continue+0x2e/0x40
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(fs_reclaim);
local_irq_disable();
lock(&aq->lock);
lock(fs_reclaim);
<Interrupt>
lock(&aq->lock);
*** DEADLOCK ***
4 locks held by setupseguest.sh/11034:
#0: 000000c485d01440 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x2fc/0x380
#1: 000000c4d2283288 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x12a0x270
#2: 000000c4a1830e48 (kn->active#172){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e/0x270
#3: 000000c4a1a12378 (&aq->lock){+.-.}-{2:2}, at: se_bind_store+0x96/0x3a0
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&aq->lock){+.-.}-{2:2} {
HARDIRQ-ON-W at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
_raw_spin_lock_bh+0x58/0xb0
ap_queue_init_state+0x2e/0x50
ap_scan_domains+0x5d6/0x620
ap_scan_adapter+0x4c0/0x810
ap_scan_bus+0x70/0x350
ap_scan_bus_wq_callback+0x56/0x80
process_one_work+0x2ba/0x820
worker_thread+0x21a/0x400
kthread+0x164/0x190
__ret_from_fork+0x4c/0x340
ret_from_fork+0xa/0x30
IN-SOFTIRQ-W at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
_raw_spin_lock_bh+0x58/0xb0
ap_tasklet_fn+0x72/0xd0
tasklet_action_common+0x174/0x1b0
handle_softirqs+0x180/0x5c0
irq_exit_rcu+0x196/0x200
do_ext_irq+0x12a/0x4d0
ext_int_handler+0xc6/0xf0
folio_zero_user+0x1c6/0x240
folio_zero_user+0x182/0x240
vma_alloc_anon_folio_pmd+0xa0/0x1d0
__do_huge_pmd_anonymous_page+0x3a/0x200
__handle_mm_fault+0x56c/0x590
handle_mm_fault+0xa2/0x370
do_exception+0x292/0x590
__do_pgm_check+0x136/0x3e0
pgm_check_handler+0x114/0x160
INITIAL USE at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
_raw_spin_lock_bh+0x58/0xb0
ap_queue_init_state+0x2e/0x50
ap_scan_domains+0x5d6/0x620
ap_scan_adapter+0x4c0/0x810
ap_scan_bus+0x70/0x350
ap_scan_bus_wq_callback+0x56/0x80
process_one_work+0x2ba/0x820
worker_thread+0x21a/0x400
kthread+0x164/0x190
__ret_from_fork+0x4c/0x340
ret_from_fork+0xa/0x30
}
... key at: [<000001c9936e8aa0>] __key.7+0x0/0x10
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (fs_reclaim){+.+.}-{0:0} {
HARDIRQ-ON-W at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
__fs_reclaim_acquire+0x44/0x50
fs_reclaim_acquire+0xbe/0x100
fs_reclaim_correct_nesting+0x20/0x70
dotest+0x5e/0x148
locking_selftest+0x2854/0x2a88
start_kernel+0x3b2/0x4f0
startup_continue+0x2e/0x40
SOFTIRQ-ON-W at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
__fs_reclaim_acquire+0x44/0x50
fs_reclaim_acquire+0xbe/0x100
fs_reclaim_correct_nesting+0x20/0x70
dotest+0x5e/0x148
locking_selftest+0x2854/0x2a88
start_kernel+0x3b2/0x4f0
startup_continue+0x2e/0x40
INITIAL USE at:
__lock_acquire+0x5ae/0x15a0
lock_acquire+0x14c/0x400
__fs_reclaim_acquire+0x44/0x50
fs_reclaim_acquire+0xbe/0x100
fs_reclaim_correct_nesting+0x20/0x70
dotest+0x5e/0x148
locking_selftest+0x2854/0x2a88
start_kernel+0x3b2/0x4f0
startup_continue+0x2e/0x40
}
... key at: [<000001c991f498e8>] __fs_reclaim_map+0x0/0x30
... acquired at:
check_prev_add+0x178/0xf40
__lock_acquire+0x12aa/0x15a0
lock_acquire+0x14c/0x400
__fs_reclaim_acquire+0x44/0x50
fs_reclaim_acquire+0xbe/0x100
__kmalloc_cache_noprof+0x5a/0x6d0
kobject_uevent_env+0xd4/0x420
ap_send_se_bind_uevent+0x48/0x70
se_bind_store+0x146/0x3a0
kernfs_fop_write_iter+0x18c/0x270
vfs_write+0x23c/0x380
ksys_write+0x88/0x120
__do_syscall+0x170/0x750
system_call+0x72/0x90
stack backtrace:
CPU: 6 UID: 0 PID: 11034 Comm: setupseguest.sh Not tainted 7.1.0-20260601.rc6.git2.516b5dbd4d4a.300.fc44.s390x+debug #1 PREEMPT
Hardware name: IBM 9175 ME1 701 (KVM/Linux)
Call Trace:
[<000001c98ffa0a7e>] dump_stack_lvl+0xae/0x108
[<000001c9900a6d7a>] print_bad_irq_dependency+0x47a/0x480
[<000001c9900a7184>] check_irq_usage+0x404/0x4c0
[<000001c9900a73b8>] check_prev_add+0x178/0xf40
[<000001c9900aaf1a>] __lock_acquire+0x12aa/0x15a0
[<000001c9900ab35c>] lock_acquire+0x14c/0x400
[<000001c9903be454>] __fs_reclaim_acquire+0x44/0x50
[<000001c9903be51e>] fs_reclaim_acquire+0xbe/0x100
[<000001c9903cf4ca>] __kmalloc_cache_noprof+0x5a/0x6d0
[<000001c9910ca9d4>] kobject_uevent_env+0xd4/0x420
[<000001c990d84098>] ap_send_se_bind_uevent+0x48/0x70
[<000001c990d87416>] se_bind_store+0x146/0x3a0
[<000001c99057da7c>] kernfs_fop_write_iter+0x18c/0x270
[<000001c99047712c>] vfs_write+0x23c/0x380
[<000001c990477438>] ksys_write+0x88/0x120
[<000001c9910f64e0>] __do_syscall+0x170/0x750
[<000001c99110a412>] system_call+0x72/0x90
INFO: lockdep is turned off.
Fixes: 4179c39842 ("s390/ap: Implement SE bind and associate uevents")
Reported-by: Ingo Franzki <ifranzki@linux.ibm.com>
Suggested-by: Finn Callies <fcallies@linux.ibm.com>
Reviewed-by: Finn Callies <fcallies@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
zcrypt_rng_device_add() allocates a buffer for the software random
number generator data cache.
This buffer can be allocated with kmalloc() as there's nothing special
about it to go directly to the page allocator.
kmalloc() provides a better API that does not require ugly casts and
kfree() does not need to know the size of the freed object.
Performance difference between kmalloc() and __get_free_pages() is not
measurable as both allocators take an object/page from a per-CPU list for
fast path allocations.
For the slow path the performance is anyway determined by the amount of
reclaim involved rather than by what allocator is used.
Replace use of get_zeroed_page() with kzalloc() and free_page() with
kfree().
Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
qeth_get_trap_id() allocates a temporary buffer for STSI system
information queries used to build trap identification strings.
This buffer can be allocated with kmalloc() as there's nothing special
about it to go directly to the page allocator.
kmalloc() provides a better API that does not require ugly casts and
kfree() does not need to know the size of the freed object.
Performance difference between kmalloc() and __get_free_pages() is not
measurable as both allocators take an object/page from a per-CPU list for
fast path allocations.
For the slow path the performance is anyway determined by the amount of
reclaim involved rather than by what allocator is used.
Replace use of get_zeroed_page() with kzalloc() and free_page() with
kfree().
Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Acked-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
DASD driver uses get_zeroed_page() to allocate pages for the Extended Error
Reporting software ring buffer and for a scratch buffer for formatting
sense dump diagnostic text.
These buffers can be allocated with kmalloc() as there's nothing special
about it to go directly to the page allocator.
kmalloc() provides a better API that does not require ugly casts and
kfree() does not need to know the size of the freed object.
Performance difference between kmalloc() and __get_free_pages() is not
measurable as both allocators take an object/page from a per-CPU list for
fast path allocations.
For the slow path the performance is anyway determined by the amount of
reclaim involved rather than by what allocator is used.
Replace use of get_zeroed_page() with kzalloc() and free_page() with
kfree().
Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
con3270_alloc_view() allocates a staging buffer used to assemble
3270 datastream content before it is copied into channel program
requests.
This buffer can be allocated with kmalloc() as there's nothing special
about it to go directly to the page allocator.
kmalloc() provides a better API that does not require ugly casts and
kfree() does not need to know the size of the freed object.
Performance difference between kmalloc() and __get_free_pages() is not
measurable as both allocators take an object/page from a per-CPU list for
fast path allocations.
For the slow path the performance is anyway determined by the amount of
reclaim involved rather than by what allocator is used.
Replace use of __get_free_page() with kmalloc() and free_page() with
kfree().
Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Rearrange some fields within AP and zcrypt structs to reduce
memory consumption and unused holes with the help of pahole
analysis of the code.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Finn Callies <fcallies@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
allmodconfig with clang W=1 points out unused global variables:
drivers/s390/char/zcore.c:49:23: error: variable
'zcore_reipl_file' set but not used [-Werror,-Wunused-but-set-global]
drivers/s390/char/zcore.c:50:23: error: variable
'zcore_hsa_file' set but not used [-Werror,-Wunused-but-set-global]
Remove both of them, since there is no point in keeping them.
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
allmodconfig with clang W=1 points out an unused global variable:
drivers/s390/char/sclp_vt220.c:85:12: error: variable
'sclp_vt220_buffered_chars' set but not used [-Werror,-Wunused-but-set-global]
Just remove it.
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Notify userspace about two important events on AP queues
when run within Secure Execution (SE) environment:
- Send AP CHANGE uevent with "SE_BIND=1" on successful bind
operation on this AP queue device.
- Send AP CHANGE uevent with "SE_ASSOC=<association_index>"
on successful association operation with the secret of the
reported index on this AP queue device.
Note there is no SE unbind/unassociate event. Unbind/unassociate
can have different triggers and technically there is no signaling
done which the AP code could catch. A user space application can,
if this information is crucial, query the sysfs attribute se_bind
on the AP queue which runs a synchronous TAPQ. If the attribute
returns with "unbound" a reset took place and SE bind and associate
states are unbound and unassociated.
Suggested-by: Marc Hartmayer mhartmay@linux.ibm.com
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Ensure that all devices currently offline are purged correctly.
Previously, purging logic relied on the internal FSM state to
determine whether a device was offline. However, devices with a
target state of offline could be skipped if CIO internal
processing was still ongoing during the purge operation.
Update the purge decision logic to rely on the online variable
in the cdev structure instead of the internal FSM state,
providing a more reliable indication of actual device
availability.
Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Remove the SCLP_OFB Kconfig option and enable the guarded code
unconditionally. This guards only a few lines of code, so the impact is
very low while at the same time this reduces the large number of Kconfig
options.
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Pull s390 updates from Vasily Gorbik:
- Add support for CONFIG_PAGE_TABLE_CHECK and enable it in
debug_defconfig. s390 can only tell user from kernel PTEs via the mm,
so mm_struct is now passed into pxx_user_accessible_page() callbacks
- Expose the PCI function UID as an arch-specific slot attribute in
sysfs so a function can be identified by its user-defined id while
still in standby. Introduces a generic ARCH_PCI_SLOT_GROUPS hook in
drivers/pci/slot.c
- Refresh s390 PCI documentation to reflect current behavior and cover
previously undocumented sysfs attributes
- zcrypt device driver cleanup series: consistent field types, clearer
variable naming, a kernel-doc warning fix, and a comment explaining
the intentional synchronize_rcu() in pkey_handler_register()
- Provide an s390 arch_raw_cpu_ptr() that avoids the detour via
get_lowcore() using alternatives, shrinking defconfig by ~27 kB
- Guard identity-base randomization with kaslr_enabled() so nokaslr
keeps the identity mapping at 0 even with RANDOMIZE_IDENTITY_BASE=y
- Build S390_MODULES_SANITY_TEST as a module only by requiring KUNIT &&
m, since built-in would not exercise module loading
- Remove the permanently commented-out HMCDRV_DEV_CLASS create_class()
code in the hmcdrv driver
- Drop stale ident_map_size extern conflicting with asm/page.h
* tag 's390-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/zcrypt: Fix warning about wrong kernel doc comment
PCI: s390: Expose the UID as an arch specific PCI slot attribute
docs: s390/pci: Improve and update PCI documentation
s390/pkey: Add comment about synchronize_rcu() to pkey base
s390/hmcdrv: Remove commented out code
s390/zcrypt: Slight rework on the agent_id field
s390/zcrypt: Explicitly use a card variable in _zcrypt_send_cprb
s390/zcrypt: Rework MKVP fields and handling
s390/zcrypt: Make apfs a real unsigned int field
s390/zcrypt: Rework domain processing within zcrypt device driver
s390/zcrypt: Move inline function rng_type6cprb_msgx from header to code
s390/percpu: Provide arch_raw_cpu_ptr()
s390: Enable page table check for debug_defconfig
s390/pgtable: Add s390 support for page table check
s390/pgtable: Use set_pmd_bit() to invalidate PMD entry
mm/page_table_check: Pass mm_struct to pxx_user_accessible_page()
s390/boot: Respect kaslr_enabled() for identity randomization
s390/Kconfig: Make modules sanity test a module-only option
s390/setup: Drop stale ident_map_size declaration
Pull driver core updates from Danilo Krummrich:
"debugfs:
- Fix NULL pointer dereference in debugfs_create_str()
- Fix misplaced EXPORT_SYMBOL_GPL for debugfs_create_str()
- Fix soundwire debugfs NULL pointer dereference from uninitialized
firmware_file
device property:
- Make fwnode flags modifications thread safe; widen the field to
unsigned long and use set_bit() / clear_bit() based accessors
- Document how to check for the property presence
devres:
- Separate struct devres_node from its "subclasses" (struct devres,
struct devres_group); give struct devres_node its own release and
free callbacks for per-type dispatch
- Introduce struct devres_action for devres actions, avoiding the
ARCH_DMA_MINALIGN alignment overhead of struct devres
- Export struct devres_node and its init/add/remove/dbginfo
primitives for use by Rust Devres<T>
- Fix missing node debug info in devm_krealloc()
- Use guard(spinlock_irqsave) where applicable; consolidate unlock
paths in devres_release_group()
driver_override:
- Convert PCI, WMI, vdpa, s390/cio, s390/ap, and fsl-mc to the
generic driver_override infrastructure, replacing per-bus
driver_override strings, sysfs attributes, and match logic; fixes a
potential UAF from unsynchronized access to driver_override in bus
match() callbacks
- Simplify __device_set_driver_override() logic
kernfs:
- Send IN_DELETE_SELF and IN_IGNORED inotify events on kernfs file
and directory removal
- Add corresponding selftests for memcg
platform:
- Allow attaching software nodes when creating platform devices via a
new 'swnode' field in struct platform_device_info
- Add kerneldoc for struct platform_device_info
software node:
- Move software node initialization from postcore_initcall() to
driver_init(), making it available early in the boot process
- Move kernel_kobj initialization (ksysfs_init) earlier to support
the above
- Remove software_node_exit(); dead code in a built-in unit
SoC:
- Introduce of_machine_read_compatible() and of_machine_read_model()
OF helpers and export soc_attr_read_machine() to replace direct
accesses to of_root from SoC drivers; also enables
CONFIG_COMPILE_TEST coverage for these drivers
sysfs:
- Constify attribute group array pointers to
'const struct attribute_group *const *' in sysfs functions,
device_add_groups() / device_remove_groups(), and struct class
Rust:
- Devres:
- Embed struct devres_node directly in Devres<T> instead of going
through devm_add_action(), avoiding the extra allocation and the
unnecessary ARCH_DMA_MINALIGN alignment
- I/O:
- Turn IoCapable from a marker trait into a functional trait
carrying the raw I/O accessor implementation (io_read /
io_write), providing working defaults for the per-type Io
methods
- Add RelaxedMmio wrapper type, making relaxed accessors usable in
code generic over the Io trait
- Remove overloaded per-type Io methods and per-backend macros
from Mmio and PCI ConfigSpace
- I/O (Register):
- Add IoLoc trait and generic read/write/update methods to the Io
trait, making I/O operations parameterizable by typed locations
- Add register! macro for defining hardware register types with
typed bitfield accessors backed by Bounded values; supports
direct, relative, and array register addressing
- Add write_reg() / try_write_reg() and LocatedRegister trait
- Update PCI sample driver to demonstrate the register! macro
Example:
```
register! {
/// UART control register.
CTRL(u32) @ 0x18 {
/// Receiver enable.
19:19 rx_enable => bool;
/// Parity configuration.
14:13 parity ?=> Parity;
}
/// FIFO watermark and counter register.
WATER(u32) @ 0x2c {
/// Number of datawords in the receive FIFO.
26:24 rx_count;
/// RX interrupt threshold.
17:16 rx_water;
}
}
impl WATER {
fn rx_above_watermark(&self) -> bool {
self.rx_count() > self.rx_water()
}
}
fn init(bar: &pci::Bar<BAR0_SIZE>) {
let water = WATER::zeroed()
.with_const_rx_water::<1>(); // > 3 would not compile
bar.write_reg(water);
let ctrl = CTRL::zeroed()
.with_parity(Parity::Even)
.with_rx_enable(true);
bar.write_reg(ctrl);
}
fn handle_rx(bar: &pci::Bar<BAR0_SIZE>) {
if bar.read(WATER).rx_above_watermark() {
// drain the FIFO
}
}
fn set_parity(bar: &pci::Bar<BAR0_SIZE>, parity: Parity) {
bar.update(CTRL, |r| r.with_parity(parity));
}
```
- IRQ:
- Move 'static bounds from where clauses to trait declarations for
IRQ handler traits
- Misc:
- Enable the generic_arg_infer Rust feature
- Extend Bounded with shift operations, single-bit bool
conversion, and const get()
Misc:
- Make deferred_probe_timeout default a Kconfig option
- Drop auxiliary_dev_pm_ops; the PM core falls back to driver PM
callbacks when no bus type PM ops are set
- Add conditional guard support for device_lock()
- Add ksysfs.c to the DRIVER CORE MAINTAINERS entry
- Fix kernel-doc warnings in base.h
- Fix stale reference to memory_block_add_nid() in documentation"
* tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (67 commits)
bus: fsl-mc: use generic driver_override infrastructure
s390/ap: use generic driver_override infrastructure
s390/cio: use generic driver_override infrastructure
vdpa: use generic driver_override infrastructure
platform/wmi: use generic driver_override infrastructure
PCI: use generic driver_override infrastructure
driver core: make software nodes available earlier
software node: remove software_node_exit()
kernel: ksysfs: initialize kernel_kobj earlier
MAINTAINERS: add ksysfs.c to the DRIVER CORE entry
drivers/base/memory: fix stale reference to memory_block_add_nid()
device property: Document how to check for the property presence
soundwire: debugfs: initialize firmware_file to empty string
debugfs: fix placement of EXPORT_SYMBOL_GPL for debugfs_create_str()
debugfs: check for NULL pointer in debugfs_create_str()
driver core: Make deferred_probe_timeout default a Kconfig option
driver core: simplify __device_set_driver_override() clearing logic
driver core: auxiliary bus: Drop auxiliary_dev_pm_ops
device property: Make modifications of fwnode "flags" thread safe
rust: devres: embed struct devres_node directly
...
Pull s390 fixes from Vasily Gorbik:
- Fix a memory leak in the zcrypt driver where the AP message buffer
for clear key RSA requests was allocated twice, once by the caller
and again locally, causing the first allocation to never be freed
- Fix the cpum_sf perf sampling rate overflow adjustment to clamp the
recalculated rate to the hardware maximum, preventing exceptions on
heavily loaded systems running with HZ=1000
* tag 's390-7.0-7' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/zcrypt: Fix memory leak with CCA cards used as accelerator
s390/cpum_sf: Cap sampling rate to prevent lsctl exception
When the AP masks are updated via apmask_store() or aqmask_store(),
ap_bus_revise_bindings() is called after ap_attr_mutex has been
released.
This calls __ap_revise_reserved(), which accesses the driver_override
field without holding any lock, racing against a concurrent
driver_override_store() that may free the old string, resulting in a
potential UAF.
Fix this by using the driver-core driver_override infrastructure, which
protects all accesses with an internal spinlock.
Note that unlike most other buses, the AP bus does not check
driver_override in its match() callback; the override is checked in
ap_device_probe() and __ap_revise_reserved() instead.
Also note that we do not enable the driver_override feature of struct
bus_type, as AP - in contrast to most other buses - passes "" to
sysfs_emit() when the driver_override pointer is NULL. Thus, printing
"\n" instead of "(null)\n".
Additionally, AP has a custom counter that is modified in the
corresponding custom driver_override_store().
Fixes: d38a87d7c0 ("s390/ap: Support driver_override for AP queue devices")
Tested-by: Holger Dengler <dengler@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Link: https://patch.msgid.link/20260324005919.2408620-11-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Add a comment about the use of the synchronize_rcu() invocation.
There are two invocations of the synchronize_rcu() call in the
pkey base code. On one place it is optional but used to enforce
a fast path update to the other CPUs. As some people and code
checkers complain about this redundant invocation the suggestion
came up to add a comment to explain why the call is meaningful
at that place.
Closes: https://lore.kernel.org/linux-s390/20260313052312.2389-1-lirongqing@baidu.com/
Suggested-by: Li Rongqing <lirongqing@baidu.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
The agent_id field is a two byte ascii field addressing
the target agent on the crypto card. Some code however
addresses this field as unsigned short. Rework these
places to treat this field always as a two byte array.
Unfortunately this field also shows up as __u16 in
struct ica_xcRB as part of the zcrypt ioctl interface.
Leave this untouched as it would break the API.
There are two other places (func_id) where a byte array
gets assigned with hex values but in fact these are ascii
value. So replace these assignments with real ascii values
for more readability.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Use an explicit variable "card" for the card addressing in
function _zcrypt_send_cprb instead of the confusing field
"user_defined" from the ica_xcRB struct. This makes the code
somewhat cleaner and easier to understand.
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
In general all MKVPs (Master Key Verification Pattern) are binary
data - usually some kind of shortened hash value e.g. sha256.
Some code parts however used some u64 type which made compares
a little bit easier. Anyway this is binary data and so all
fields related to MKVP are now u8[] and function parameters
use (const) u8 * now. The sysfs emit for the MKVPs also has
been adapted to first format the MKVP as hex string into a
buffer and then use %s with sysfs_emit_at() to generate the
sysfs output. The patch also include a simple whitespace fix.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Slight rework on the apfs field: Instead of unsigned char[4]
make this a real 32 bit unsigned int field. With that done,
some assignments and some printouts can be simplified.
With that comes a slight move of the anonymous struct covering
the message type 86 header to dedupe some code lines.
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Slight rework of the domain handling within the zcrypt dd:
Remove this curious construct to give a pointer to the
domain field within the CPRB struct to the zcrypt API and
later fill in the target domain via this pointer.
Now the domain is filled in with the send function when
the ready constructed AP message is about to be pushed
down into the software queue for AP queue processing.
So now the domain handling for CCA, EP11 and (internal) rng
CPRBs is the same. With this comes a slight reshuffle of the
code related to domain processing in the zcrypt API and the
message type 60 protocol implementation code.
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Function rng_type6cprb_msgx() is only used once and thus no need
to provide it in header file any more. Move it at the place within
the code where it is used.
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Reviewed-by: Anthony Krowiak <akrowiak@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Pull s390 fixes from Vasily Gorbik:
- Revert IRQ entry/exit path optimization that incorrectly cleared
some PSW bits before irqentry_exit(), causing boot failures with
linux-next and HRTIMER_REARM_DEFERRED (which only uncovered the
problem)
- Fix zcrypt code to show CCA card serial numbers even when the
default crypto domain is offline by selecting any domain available,
preventing empty sysfs entries
* tag 's390-7.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/zcrypt: Enable AUTOSEL_DOM for CCA serialnr sysfs attribute
s390: Revert "s390/irq/idle: Remove psw bits early"
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- Fix nvme-pci IRQ race and slab-out-of-bounds access
- Fix recursive workqueue locking for target async events
- Various cleanups
- Fix a potential NULL pointer dereference in ublk on size setting
- ublk automatic partition scanning fix
- Two s390 dasd fixes
* tag 'block-7.0-20260312' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
nvme: Annotate struct nvme_dhchap_key with __counted_by
nvme-core: do not pass empty queue_limits to blk_mq_alloc_queue()
nvme-pci: Fix race bug in nvme_poll_irqdisable()
nvmet: move async event work off nvmet-wq
nvme-pci: Fix slab-out-of-bounds in nvme_dbbuf_set
s390/dasd: Copy detected format information to secondary device
s390/dasd: Move quiesce state with pprc swap
ublk: don't clear GD_SUPPRESS_PART_SCAN for unprivileged daemons
ublk: fix NULL pointer dereference in ublk_ctrl_set_size()
During online processing for a DASD device an IO operation is started to
determine the format of the device. CDL format contains specifically
sized blocks at the beginning of the disk.
For a PPRC secondary device no real IO operation is possible therefore
this IO request can not be started and this step is skipped for online
processing of secondary devices. This is generally fine since the
secondary is a copy of the primary device.
In case of an additional partition detection that is run after a swap
operation the format information is needed to properly drive partition
detection IO.
Currently the information is not passed leading to IO errors during
partition detection and a wrongly detected partition table which in turn
might lead to data corruption on the disk with the wrong partition table.
Fix by passing the format information from primary to secondary device.
Fixes: 413862caad ("s390/dasd: add copy pair swap capability")
Cc: stable@vger.kernel.org #6.1
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Acked-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://patch.msgid.link/20260310142330.4080106-3-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Quiesce and resume is a mechanism to suspend operations on DASD devices.
In the context of a controlled copy pair swap operation, the quiesce
operation is usually issued before the actual swap and a resume
afterwards.
During the swap operation, the underlying device is exchanged. Therefore,
the quiesce flag must be moved to the secondary device to ensure a
consistent quiesce state after the swap.
The secondary device itself cannot be suspended separately because there
is no separate block device representation for it.
Fixes: 413862caad ("s390/dasd: add copy pair swap capability")
Cc: stable@vger.kernel.org #6.1
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://patch.msgid.link/20260310142330.4080106-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The serialnr sysfs attribute for CCA cards when queried always
used the default domain for sending the request down to the card.
If for any reason exactly this default domain is disabled then
the attribute code fails to retrieve the CCA info and the sysfs
entry shows an empty string. Works as designed but the serial
number is a card attribute and thus it does not matter which
domain is used for the query. So if there are other domains on
this card available, these could be used.
So extend the code to use AUTOSEL_DOM for the domain value to
address any online domain within the card for querying the cca
info and thus show the serialnr as long as there is one domain
usable regardless of the default domain setting.
Fixes: 8f291ebf32 ("s390/zcrypt: enable card/domain autoselect on ep11 cprbs")
Suggested-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This converts some of the visually simpler cases that have been split
over multiple lines. I only did the ones that are easy to verify the
resulting diff by having just that final GFP_KERNEL argument on the next
line.
Somebody should probably do a proper coccinelle script for this, but for
me the trivial script actually resulted in an assertion failure in the
middle of the script. I probably had made it a bit _too_ trivial.
So after fighting that far a while I decided to just do some of the
syntactically simpler cases with variations of the previous 'sed'
scripts.
The more syntactically complex multi-line cases would mostly really want
whitespace cleanup anyway.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the exact same thing as the 'alloc_obj()' version, only much
smaller because there are a lot fewer users of the *alloc_flex()
interface.
As with alloc_obj() version, this was done entirely with mindless brute
force, using the same script, except using 'flex' in the pattern rather
than 'objs*'.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
Pull s390 fixes from Heiko Carstens:
- Make KEXEC_SIG available again for CONFIG_MODULES=n
- The s390 topology code used to call rebuild_sched_domains() before
common code scheduling domains were setup. This was silently ignored
by common code, but now results in a warning. Address by avoiding the
early call
- Convert debug area lock from spinlock to raw spinlock to address
lockdep warnings
- The recent 3490 tape device driver rework resulted in a different
device driver name, which is visible via sysfs for user space. This
breaks at least one user space application. Change the device driver
name back to its old name to fix this
* tag 's390-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/tape: Fix device driver name
s390/debug: Convert debug area lock from a spinlock to a raw spinlock
s390/smp: Avoid calling rebuild_sched_domains() early
s390/kexec: Make KEXEC_SIG available when CONFIG_MODULES=n
Recent cleanups and code consolidations in the s390 tape device driver
renamed files and function namespaces from tape_34xx to tape_3490 to
better reflect the single support of the IBM 3490E device in the
codebase.
These changes also renamed the driver name to tape_3490, which
consequently broke userspace as the sysfs driver path is now
/sys/bus/ccw/drivers/tape_3490/ instead of
/sys/bus/ccw/drivers/tape_34xx/.
Change the device driver name back to tape_34xx to fix userspace.
Fixes: 9872dae610 ("s390/tape: Rename tape_34xx.c to tape_3490.c")
Reported-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Pull SCSI updates from James Bottomley:
"Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes.
The biggest core change is the massive code motion in the sd driver to
remove forward declarations and the most significant change is to
enumify the queuecommand return"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits)
scsi: csiostor: Fix dereference of null pointer rn
scsi: buslogic: Reduce stack usage
scsi: ufs: host: mediatek: Require CONFIG_PM
scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event
scsi: smartpqi: Fix memory leak in pqi_report_phys_luns()
scsi: mpi3mr: Make driver probing asynchronous
scsi: ufs: core: Flush exception handling work when RPM level is zero
scsi: efct: Use IRQF_ONESHOT and default primary handler
scsi: ufs: core: Use a host-wide tagset in SDB mode
scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: mpi3mr: Driver version update to 8.17.0.3.50
scsi: mpi3mr: Fixed the W=1 compilation warning
scsi: mpi3mr: Record and report controller firmware faults
scsi: mpi3mr: Update MPI Headers to revision 39
scsi: mpi3mr: Use negotiated link rate from DevicePage0
scsi: mpi3mr: Avoid redundant diag-fault resets
scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context
scsi: mpi3mr: Add module parameter to control threaded IRQ polling
...
Pull non-MM updates from Andrew Morton:
- "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves
disk space by teaching ocfs2 to reclaim suballocator block group
space (Heming Zhao)
- "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the
ARRAY_END() macro and uses it in various places (Alejandro Colomar)
- "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes
the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the
page size (Pnina Feder)
- "kallsyms: Prevent invalid access when showing module buildid" cleans
up kallsyms code related to module buildid and fixes an invalid
access crash when printing backtraces (Petr Mladek)
- "Address page fault in ima_restore_measurement_list()" fixes a
kexec-related crash that can occur when booting the second-stage
kernel on x86 (Harshit Mogalapalli)
- "kho: ABI headers and Documentation updates" updates the kexec
handover ABI documentation (Mike Rapoport)
- "Align atomic storage" adds the __aligned attribute to atomic_t and
atomic64_t definitions to get natural alignment of both types on
csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain)
- "kho: clean up page initialization logic" simplifies the page
initialization logic in kho_restore_page() (Pratyush Yadav)
- "Unload linux/kernel.h" moves several things out of kernel.h and into
more appropriate places (Yury Norov)
- "don't abuse task_struct.group_leader" removes the usage of
->group_leader when it is "obviously unnecessary" (Oleg Nesterov)
- "list private v2 & luo flb" adds some infrastructure improvements to
the live update orchestrator (Pasha Tatashin)
* tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits)
watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
procfs: fix missing RCU protection when reading real_parent in do_task_stat()
watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
kcsan, compiler_types: avoid duplicate type issues in BPF Type Format
kho: fix doc for kho_restore_pages()
tests/liveupdate: add in-kernel liveupdate test
liveupdate: luo_flb: introduce File-Lifecycle-Bound global state
liveupdate: luo_file: Use private list
list: add kunit test for private list primitives
list: add primitives for private list manipulations
delayacct: fix uapi timespec64 definition
panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
netclassid: use thread_group_leader(p) in update_classid_task()
RDMA/umem: don't abuse current->group_leader
drm/pan*: don't abuse current->group_leader
drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
drm/amdgpu: don't abuse current->group_leader
android/binder: use same_thread_group(proc->tsk, current) in binder_mmap()
android/binder: don't abuse current->group_leader
kho: skip memoryless NUMA nodes when reserving scratch areas
...
Pull crypto update from Herbert Xu:
"API:
- Fix race condition in hwrng core by using RCU
Algorithms:
- Allow authenc(sha224,rfc3686) in fips mode
- Add test vectors for authenc(hmac(sha384),cbc(aes))
- Add test vectors for authenc(hmac(sha224),cbc(aes))
- Add test vectors for authenc(hmac(md5),cbc(des3_ede))
- Add lz4 support in hisi_zip
- Only allow clear key use during self-test in s390/{phmac,paes}
Drivers:
- Set rng quality to 900 in airoha
- Add gcm(aes) support for AMD/Xilinx Versal device
- Allow tfms to share device in hisilicon/trng"
* tag 'v7.0-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (100 commits)
crypto: img-hash - Use unregister_ahashes in img_{un}register_algs
crypto: testmgr - Add test vectors for authenc(hmac(md5),cbc(des3_ede))
crypto: cesa - Simplify return statement in mv_cesa_dequeue_req_locked
crypto: testmgr - Add test vectors for authenc(hmac(sha224),cbc(aes))
crypto: testmgr - Add test vectors for authenc(hmac(sha384),cbc(aes))
hwrng: core - use RCU and work_struct to fix race condition
crypto: starfive - Fix memory leak in starfive_aes_aead_do_one_req()
crypto: xilinx - Fix inconsistant indentation
crypto: rng - Use unregister_rngs in register_rngs
crypto: atmel - Use unregister_{aeads,ahashes,skciphers}
hwrng: optee - simplify OP-TEE context match
crypto: ccp - Add sysfs attribute for boot integrity
dt-bindings: crypto: atmel,at91sam9g46-sha: add microchip,lan9691-sha
dt-bindings: crypto: atmel,at91sam9g46-aes: add microchip,lan9691-aes
dt-bindings: crypto: qcom,inline-crypto-engine: document the Milos ICE
crypto: caam - fix netdev memory leak in dpaa2_caam_probe
crypto: hisilicon/qm - increase wait time for mailbox
crypto: hisilicon/qm - obtain the mailbox configuration at one time
crypto: hisilicon/qm - remove unnecessary code in qm_mb_write()
crypto: hisilicon/qm - move the barrier before writing to the mailbox register
...
Pull s390 updates from Heiko Carstens:
- Drop support for outdated 3590/3592 and 3480 tape devices, and limit
support to virtualized 3490E types devices
- Implement exception based WARN() and WARN_ONCE() similar to x86
- Slightly optimize preempt primitives like __preempt_count_add() and
__preempt_count_dec_and_test()
- A couple of small fixes and improvements
* tag 's390-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (35 commits)
s390/tape: Consolidate tape config options and modules
s390/cio: Fix device lifecycle handling in css_alloc_subchannel()
s390/tape: Rename tape_34xx.c to tape_3490.c
s390/tape: Cleanup sense data analysis and error handling
s390/tape: Remove 3480 tape device type
s390/tape: Remove unused command definitions
s390/tape: Remove special block id handling
s390/tape: Remove tape load display support
s390/tape: Remove support for 3590/3592 models
s390/kexec: Emit an error message when cmdline is too long
s390/configs: Enable BLK_DEV_NULL_BLK as module
s390: Document s390 stackprotector support
s390/perf: Disable register readout on sampling events
s390/Kconfig: Define non-zero ILLEGAL_POINTER_VALUE
s390/bug: Prevent tail-call optimization
s390/bug: Skip __WARN_trap() in call traces
s390/bug: Implement WARN_ONCE()
s390/bug: Implement __WARN_printf()
s390/traps: Copy monitor code to pt_regs
s390/bug: Introduce and use monitor code macro
...
The tape device driver only supports 3490E devices on Virtual Tape Server
(VTS). There is no point in keeping separated options and modules for
different device types and general hardware support. Consolidate the tape
config option into a single option, which enables the complete tape support
with one singular module called 'tape_s390'. The corresponding module entry
points are adapted and consolidate in tape_init() and tape_exit()
respectively in tape_core.c
The current module author and descriptions of the individual tape
modules are outdated and haven't been changed for quite some time.
Change it to a more generic description that is in line with the
corresponding supported s390 architecture for the single tape module.
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
`css_alloc_subchannel()` calls `device_initialize()` before setting up
the DMA masks. If `dma_set_coherent_mask()` or `dma_set_mask()` fails,
the error path frees the subchannel structure directly, bypassing
the device model reference counting.
Once `device_initialize()` has been called, the embedded struct device
must be released via `put_device()`, allowing the release callback to
free the container structure.
Fix the error path by dropping the initial device reference with
`put_device()` instead of calling `kfree()` directly.
This ensures correct device lifetime handling and avoids potential
use-after-free or double-free issues.
Fixes: e5dcf0025d ("s390/css: move subchannel lock allocation")
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
The driver now exclusively supports 3490 tape devices, given support for
3480 tape devices has been removed. Update the device driver name, its
source file name, and change any occurrences of "34xx/34XX" to "3490" in
the source code and comments.
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Quite a few Error Recovery Action (ERA) codes and sense data entries are
not relevant anymore for the Virtual Tape Server (VTS) and are not being
used by VTS. Most of them were relevant for actual physical errors when
a tape cartridge got stuck or a tape didn't rewind properly for example.
Remove these codes from the sense data analysis as it's dead code
anyway.
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
