redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

x86/entry: Increase entry_stack size to a full page 

Marco crashed in bad_iret with a Clang11/KCSAN build due to
overflowing the stack. Now that we run C code on it, expand it to a
full page.

Suggested-by: Andy Lutomirski <luto@amacapital.net>
Reported-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Tested-by: Marco Elver <elver@google.com>
Link: https://lkml.kernel.org/r/20200618144801.819246178@infradead.org
alistair/sunxi64-5.8
Peter Zijlstra 2020-06-17 18:25:57 +02:00
parent e3a9e681ad
commit c7aadc0932
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/processor.h
View File

@ -370,7 +370,7 @@ struct x86_hw_tss {
#define IO_BITMAP_OFFSET_INVALID (__KERNEL_TSS_LIMIT + 1)
struct entry_stack {
unsigned long words[64];
char stack[PAGE_SIZE];
};
struct entry_stack_page {