mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-03-08 09:31:44 +07:00
10cfde5dc6
ACPICA commit 7ba2f3d91a32f104765961fda0ed78b884ae193d
The current codebase makes use of one-element arrays in the following
form:
struct something {
int length;
u8 data[1];
};
struct something *instance;
instance = kmalloc(sizeof(*instance) + size, GFP_KERNEL);
instance->length = size;
memcpy(instance->data, source, size);
but the preferred mechanism to declare variable-length types such as
these ones is a flexible array member[1][2], introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure,
which will help us prevent some kind of undefined behavior bugs from
being inadvertently introduced[3] to the linux codebase from now on.
This issue was found with the help of Coccinelle and audited _manually_.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit
|
||
|---|---|---|
| .. | ||
| acpica | ||
| apei | ||
| arm64 | ||
| dptf | ||
| nfit | ||
| numa | ||
| pmic | ||
| x86 | ||
| ac.c | ||
| acpi_adxl.c | ||
| acpi_amba.c | ||
| acpi_apd.c | ||
| acpi_cmos_rtc.c | ||
| acpi_configfs.c | ||
| acpi_dbg.c | ||
| acpi_extlog.c | ||
| acpi_ipmi.c | ||
| acpi_lpat.c | ||
| acpi_lpit.c | ||
| acpi_lpss.c | ||
| acpi_memhotplug.c | ||
| acpi_pad.c | ||
| acpi_platform.c | ||
| acpi_pnp.c | ||
| acpi_processor.c | ||
| acpi_tad.c | ||
| acpi_video.c | ||
| acpi_watchdog.c | ||
| battery.c | ||
| bgrt.c | ||
| blacklist.c | ||
| bus.c | ||
| button.c | ||
| cm_sbs.c | ||
| container.c | ||
| cppc_acpi.c | ||
| custom_method.c | ||
| debugfs.c | ||
| device_pm.c | ||
| device_sysfs.c | ||
| dock.c | ||
| ec_sys.c | ||
| ec.c | ||
| event.c | ||
| evged.c | ||
| fan.c | ||
| glue.c | ||
| hed.c | ||
| internal.h | ||
| ioapic.c | ||
| irq.c | ||
| Kconfig | ||
| Makefile | ||
| nvs.c | ||
| osi.c | ||
| osl.c | ||
| pci_irq.c | ||
| pci_link.c | ||
| pci_mcfg.c | ||
| pci_root.c | ||
| pci_slot.c | ||
| power.c | ||
| pptt.c | ||
| proc.c | ||
| processor_core.c | ||
| processor_driver.c | ||
| processor_idle.c | ||
| processor_pdc.c | ||
| processor_perflib.c | ||
| processor_thermal.c | ||
| processor_throttling.c | ||
| property.c | ||
| reboot.c | ||
| resource.c | ||
| sbs.c | ||
| sbshc.c | ||
| sbshc.h | ||
| scan.c | ||
| sleep.c | ||
| sleep.h | ||
| spcr.c | ||
| sysfs.c | ||
| tables.c | ||
| thermal.c | ||
| tiny-power-button.c | ||
| utils.c | ||
| video_detect.c | ||
| wakeup.c | ||