[PATCH] x86_64: Dump stack and prevent recursion on early fault
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
parent
f1290ec93e
commit
b957591fee
1 changed files with 8 additions and 0 deletions
|
@ -200,14 +200,22 @@ init_rsp:
|
|||
.quad init_thread_union+THREAD_SIZE-8
|
||||
|
||||
ENTRY(early_idt_handler)
|
||||
cmpl $2,early_recursion_flag(%rip)
|
||||
jz 1f
|
||||
incl early_recursion_flag(%rip)
|
||||
xorl %eax,%eax
|
||||
movq 8(%rsp),%rsi # get rip
|
||||
movq (%rsp),%rdx
|
||||
movq %cr2,%rcx
|
||||
leaq early_idt_msg(%rip),%rdi
|
||||
call early_printk
|
||||
cmpl $2,early_recursion_flag(%rip)
|
||||
jz 1f
|
||||
call dump_stack
|
||||
1: hlt
|
||||
jmp 1b
|
||||
early_recursion_flag:
|
||||
.long 0
|
||||
|
||||
early_idt_msg:
|
||||
.asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n"
|
||||
|
|
Loading…
Reference in a new issue