Priya Bala Govindasamy 19c76bdd3f rust: cpufreq: Fix temporary write in Registration::bios_limit_callback ... In `Registration::bios_limit_callback`, the expression `&mut (unsafe { *limit })` creates a reference to a temporary copy of the value pointed to by `limit` on the stack. Therefore, writes made by `T::bios_limit` go to this temporary instead of the memory location pointed to by `limit`. Additionally, `limit` may be uninitialized, such as when `Registration::bios_limit_callback` is invoked by `show_bios_limit` in drivers/cpufreq/cpufreq.c. Therefore creating a reference to `limit` is unsound. Fix this by changing the signature of `T::bios_limit` to return the limit value. `Registration::bios_limit_callback` can then update `limit` directly. Fixes: c6af9a1191 ("rust: cpufreq: Extend abstractions for driver registration") Reported-by: Dylan Zueck<dzueck@uci.edu> Reported-by: Yuan Tan<ytan089@ucr.edu> Assisted-by: ChatGPT:gpt-5.4 Signed-off-by: Priya Bala Govindasamy<pgovind2@uci.edu> [ Viresh: Fix rustfmtcheck warning ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>		2026-08-06 11:54:41 +05:30
..
alloc	Driver core changes for 7.2-rc1	2026-06-15 12:41:17 +05:30
block	rust: block: fix GenDisk cleanup paths	2026-05-31 19:45:06 -06:00
debugfs
device
drm	rust/drm/gem: Use DeviceContext with GEM objects	2026-06-02 22:51:16 +02:00
fs
gpu
interop
io	Driver core changes for 7.2-rc1	2026-06-15 12:41:17 +05:30
iommu
irq
list	Locking updates for v7.1:	2026-04-14 12:36:25 -07:00
mm	mm: rename zap_page_range_single() to zap_vma_range()	2026-04-05 13:53:15 -07:00
net	rust: make build_assert module the home of related macros	2026-06-10 09:07:13 +02:00
num	rust: make build_assert module the home of related macros	2026-06-10 09:07:13 +02:00
pci	rust: pci: make Bar lifetime-parameterized	2026-05-27 16:24:23 +02:00
ptr	rust: ptr: remove implicit index projection syntax	2026-06-05 10:16:47 +02:00
str
sync	Locking updates for v7.2:	2026-06-15 14:21:14 +05:30
time
types	rust: types: add ForLt trait for higher-ranked lifetime support	2026-05-27 16:24:59 +02:00
.gitignore
acpi.rs
alloc.rs	rust: alloc: cleanup imports and use "kernel vertical" style	2026-05-20 17:34:17 +02:00
auxiliary.rs	rust: auxiliary: generalize Registration over ForLt	2026-05-27 16:27:28 +02:00
bitfield.rs	rust: bitfield: mark Debug impl as #[inline]	2026-06-17 01:32:56 +02:00
bitmap.rs	rust: tests: add Kconfig for KUnit test	2026-06-08 02:30:33 +02:00
bits.rs
block.rs
bug.rs
build_assert.rs	rust: make build_assert module the home of related macros	2026-06-10 09:07:13 +02:00
clk.rs	rust: clk: implement Send and Sync	2026-04-03 11:57:35 +02:00
configfs.rs
cpu.rs
cpufreq.rs	rust: cpufreq: Fix temporary write in Registration::bios_limit_callback	2026-08-06 11:54:41 +05:30
cpumask.rs
cred.rs
debugfs.rs
device_id.rs
device.rs	rust: device: make Core and CoreInternal lifetime-parameterized	2026-05-27 16:22:42 +02:00
devres.rs	rust: devres: add 'static bound to Devres<T>	2026-05-29 01:06:10 +02:00
dma.rs	Driver core changes for 7.2-rc1	2026-06-15 12:41:17 +05:30
driver.rs	Merge patch series "rust: device: Higher-Ranked Lifetime Types for device drivers"	2026-05-29 00:38:54 +02:00
error.rs	rust: error: replace match + panic in const context with const expect	2026-05-28 11:08:27 +02:00
faux.rs
firmware.rs
fmt.rs	rust: fmt: use vertical import style	2026-05-20 00:47:24 +02:00
fs.rs
generated_arch_reachable_asm.rs.S
generated_arch_static_branch_asm.rs.S
generated_arch_warn_asm.rs.S
gpu.rs
i2c.rs	Driver core changes for 7.2-rc1	2026-06-15 12:41:17 +05:30
id_pool.rs
impl_flags.rs
init.rs	rust: inline some init methods	2026-06-09 04:13:21 +02:00
interop.rs
io.rs
ioctl.rs	rust: make build_assert module the home of related macros	2026-06-10 09:07:13 +02:00
iov.rs
irq.rs
jump_label.rs
Kconfig.test	rust: bitfield: Add KUnit tests for bitfield	2026-06-09 04:13:07 +02:00
kunit.rs	rust: tests: add Kconfig for KUnit test	2026-06-08 02:30:33 +02:00
lib.rs	rust: extract bitfield! macro from register!	2026-06-09 04:12:51 +02:00
list.rs	rust: list: hide macros from top-level kernel doc	2026-03-27 12:15:47 +01:00
maple_tree.rs
miscdevice.rs	rust: miscdevice: remove redundant imports	2026-05-23 13:47:32 +02:00
mm.rs
module_param.rs	rust: module_param: add missing newline to pr_warn_once	2026-06-04 16:42:34 +00:00
net.rs
num.rs
of.rs
opp.rs	opp: rust: mark OPP methods as inline	2026-05-25 09:40:52 +05:30
page.rs	mm.git review status for mm-hotfixes-stable..mm-stable	2026-06-19 10:14:34 -07:00
pci.rs	rust: pci: make Driver trait lifetime-parameterized	2026-05-27 16:23:10 +02:00
pid_namespace.rs
platform.rs	driver core: platform: set mod_name in driver registration	2026-06-08 23:28:24 +02:00
prelude.rs	rust: prelude: add zerocopy{,_derive}::IntoBytes	2026-06-17 00:32:42 +02:00
print.rs
processor.rs
ptr.rs	Rust timekeeping changes for v7.1	2026-04-08 10:44:11 +02:00
pwm.rs
rbtree.rs
regulator.rs
revocable.rs
safety.rs
scatterlist.rs
security.rs
seq_file.rs
sizes.rs	rust: sizes: add SizeConstants trait for device address space constants	2026-04-07 12:57:50 +02:00
soc.rs
std_vendor.rs
str.rs	rust: str: clean unused import for Rust >= 1.98	2026-06-10 09:07:13 +02:00
sync.rs
task.rs	Char/Misc/IIO/and others driver updates for 7.1-rc1	2026-04-24 13:23:50 -07:00
time.rs
tracepoint.rs
transmute.rs	rust: transmute: simplify code with Rust 1.80.0 split_at_*checked()	2026-04-07 10:00:24 +02:00
types.rs	rust: types: add ForLt trait for higher-ranked lifetime support	2026-05-27 16:24:59 +02:00
uaccess.rs	Char/Misc/IIO/and others driver updates for 7.1-rc1	2026-04-24 13:23:50 -07:00
usb.rs	rust: usb: make Driver trait lifetime-parameterized	2026-05-27 16:23:51 +02:00
workqueue.rs
xarray.rs	rust: make build_assert module the home of related macros	2026-06-10 09:07:13 +02:00