averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-09-22 09:34:56 +02:00
Code Issues Packages Projects Releases Wiki Activity

ARM: allow __do_kernel_fault() to report execution of memory faults

Browse Source 
commit 40b466db1d upstream

Allow __do_kernel_fault() to detect the execution of memory, so we can
provide the same fault message as do_page_fault() would do. This is
required when we split the kernel address fault handling from the
main do_page_fault() code path.

Reviewed-by: Xie Yuanbin <xieyuanbin1@huawei.com>
Tested-by: Xie Yuanbin <xieyuanbin1@huawei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Russell King (Oracle)
2026-07-04 13:42:18 +02:00
committed by Greg Kroah-Hartman
parent 89b37df6f8
commit 98b209cd62
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/mm/fault.c
+2
View File
@@ -176,6 +176,8 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
*/
if (addr < PAGE_SIZE) {
msg = "NULL pointer dereference";
} else if (is_permission_fault(fsr) && fsr & FSR_LNX_PF) {
msg = "execution of memory";
} else {
if (is_translation_fault(fsr) &&
kfence_handle_page_fault(addr, is_write_fault(fsr), regs))