From: Matt Mackall <mpm@selenic.com>
Noticed the THREAD_SIZE clean-ups are in -mm now. Here are the missing
bits for kgdb, tested in -tiny with 4k stacks.
---
arch/i386/kernel/kgdb_stub.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff -puN arch/i386/kernel/kgdb_stub.c~kgdb-THREAD_SIZE-fixes arch/i386/kernel/kgdb_stub.c
--- 25/arch/i386/kernel/kgdb_stub.c~kgdb-THREAD_SIZE-fixes 2004-03-08 23:24:50.000000000 -0800
+++ 25-akpm/arch/i386/kernel/kgdb_stub.c 2004-03-08 23:24:50.000000000 -0800
@@ -707,12 +707,13 @@ get_gdb_regs(struct task_struct *p, stru
if (p->state == TASK_RUNNING)
return;
stack_page = (unsigned long) p->thread_info;
- if (gdb_regs[_ESP] < stack_page || gdb_regs[_ESP] > 8188 + stack_page)
+ if (gdb_regs[_ESP] < stack_page || gdb_regs[_ESP] >
+ THREAD_SIZE - sizeof(long) + stack_page)
return;
/* include/asm-i386/system.h:switch_to() pushes ebp last. */
do {
if (gdb_regs[_EBP] < stack_page ||
- gdb_regs[_EBP] > 8184 + stack_page)
+ gdb_regs[_EBP] > THREAD_SIZE - 2*sizeof(long) + stack_page)
return;
gdb_regs[_PC] = *(unsigned long *) (gdb_regs[_EBP] + 4);
gdb_regs[_ESP] = gdb_regs[_EBP] + 8;
_