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authorDavid S. Miller <davem@davemloft.net>2010-04-21 12:14:25 +0400
committerDavid S. Miller <davem@davemloft.net>2010-04-21 12:14:25 +0400
commit87eb367003887cdc81a5d183efea227b5b488961 (patch)
tree40f617e25a9364d573e3cd2189c9e7fa56c8a0fe /arch/sparc/kernel/traps_64.c
parentccb7c7732e2ceb4e81a7806faf1670be9681ccd2 (diff)
parent05d17608a69b3ae653ea5c9857283bef3439c733 (diff)
downloadlinux-87eb367003887cdc81a5d183efea227b5b488961.tar.xz
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/wireless/iwlwifi/iwl-6000.c net/core/dev.c
Diffstat (limited to 'arch/sparc/kernel/traps_64.c')
-rw-r--r--arch/sparc/kernel/traps_64.c26
1 files changed, 3 insertions, 23 deletions
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index 837dfc2390d6..9da57f032983 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -2203,27 +2203,6 @@ void dump_stack(void)
EXPORT_SYMBOL(dump_stack);
-static inline int is_kernel_stack(struct task_struct *task,
- struct reg_window *rw)
-{
- unsigned long rw_addr = (unsigned long) rw;
- unsigned long thread_base, thread_end;
-
- if (rw_addr < PAGE_OFFSET) {
- if (task != &init_task)
- return 0;
- }
-
- thread_base = (unsigned long) task_stack_page(task);
- thread_end = thread_base + sizeof(union thread_union);
- if (rw_addr >= thread_base &&
- rw_addr < thread_end &&
- !(rw_addr & 0x7UL))
- return 1;
-
- return 0;
-}
-
static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
{
unsigned long fp = rw->ins[6];
@@ -2252,6 +2231,7 @@ void die_if_kernel(char *str, struct pt_regs *regs)
show_regs(regs);
add_taint(TAINT_DIE);
if (regs->tstate & TSTATE_PRIV) {
+ struct thread_info *tp = current_thread_info();
struct reg_window *rw = (struct reg_window *)
(regs->u_regs[UREG_FP] + STACK_BIAS);
@@ -2259,8 +2239,8 @@ void die_if_kernel(char *str, struct pt_regs *regs)
* find some badly aligned kernel stack.
*/
while (rw &&
- count++ < 30&&
- is_kernel_stack(current, rw)) {
+ count++ < 30 &&
+ kstack_valid(tp, (unsigned long) rw)) {
printk("Caller[%016lx]: %pS\n", rw->ins[7],
(void *) rw->ins[7]);