MaxOS::runtime::KASanHandler Class Reference

Handles kernel address sanitizer runtime errors. More...

#include <kasan.h>

Static Public Member Functions
static void	handle (bool write, uintptr_t address, size_t size, void *rip)
	Handles a KASan error by panicking and printing the details.
static void	initialize ()
	Initializes the KASan handler by setting up the shadow memory.
static void	poison_stack (uintptr_t address, size_t size)
	Marks a region of stack memory as poisoned (inaccessible)
static void	unpoison_stack (uintptr_t address, size_t size)
	Marks a region of stack memory as unpoisoned (accessible)

Detailed Description

Handles kernel address sanitizer runtime errors.

Todo:

finish when cbf

Definition at line 23 of file kasan.h.

Member Function Documentation

handle()

void KASanHandler::handle ( bool  write, uintptr_t  address, size_t  size, void *  rip  )

static

Handles a KASan error by panicking and printing the details.

Parameters

write	Whether the access was a write (true) or read (false)
address	The address that was accessed
size	The size of the access in bytes
rip	The instruction pointer where the access occurred

Definition at line 27 of file kasan.cpp.

                                                                               {
    ASSERT(false, "KASAN ERROR: %s of size %zu at address 0x%lx from RIP 0x%p", write ? "WRITE" : "READ", size, address, rip);
}

References ASSERT.

Referenced by __asan_load16_noabort(), __asan_load1_noabort(), __asan_load2_noabort(), __asan_load4_noabort(), __asan_load8_noabort(), __asan_loadN_noabort(), __asan_store16_noabort(), __asan_store1_noabort(), __asan_store2_noabort(), __asan_store4_noabort(), __asan_store8_noabort(), and __asan_storeN_noabort().

initialize()

void KASanHandler::initialize ( )

static

Initializes the KASan handler by setting up the shadow memory.

Definition at line 34 of file kasan.cpp.

                              {
 
}

poison_stack()

void KASanHandler::poison_stack ( uintptr_t  address, size_t  size  )

static

Marks a region of stack memory as poisoned (inaccessible)

Parameters

address	The starting address of the region
size	The size of the region in bytes

Definition at line 44 of file kasan.cpp.

                                                              {
 
}

unpoison_stack()

void KASanHandler::unpoison_stack ( uintptr_t  address, size_t  size  )

static

Marks a region of stack memory as unpoisoned (accessible)

Parameters

address	The starting address of the region
size	The size of the region in bytes

Definition at line 54 of file kasan.cpp.

                                                                {
 
}

---

The documentation for this class was generated from the following files:

• /home/runner/work/MaxOS/MaxOS/kernel/include/runtime/kasan.h
• /home/runner/work/MaxOS/MaxOS/kernel/src/runtime/kasan.cpp