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[PATCH] uml: Fix sysrq-r support for skas mode

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The old code had the IP and SP coming from the registers in the thread
struct, which are completely wrong since those are the userspace
registers.  This fixes that by pulling the correct values from the
jmp_buf in which the kernel state of each thread is stored.

Signed-off-by: Allan Graves <allan.graves@oracle.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Allan Graves
2005-10-04 14:53:52 -04:00
committed by Linus Torvalds
parent 71dc036247
commit fad1c45c93
9 changed files with 38 additions and 89 deletions
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8
arch/um/kernel/sysrq.c
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@@ -62,13 +62,7 @@ void show_stack(struct task_struct *task, unsigned long *esp)
if (esp == NULL) {
if (task != current && task != NULL) {
/* XXX: Isn't this bogus? I.e. isn't this the
* *userspace* stack of this task? If not so, use this
* even when task == current (as in i386).
*/
esp = (unsigned long *) KSTK_ESP(task);
/* Which one? No actual difference - just coding style.*/
//esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
} else {
esp = (unsigned long *) &esp;
}
@@ -84,5 +78,5 @@ void show_stack(struct task_struct *task, unsigned long *esp)
}
printk("Call Trace: \n");
show_trace(current, esp);
show_trace(task, esp);
}