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author | Jens Axboe <jens.axboe@oracle.com> | 2010-04-29 07:36:24 (GMT) |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-04-29 07:36:24 (GMT) |
commit | 7407cf355fdf5500430be966dbbde84a27293bad (patch) | |
tree | 922861288ff38558ed721a79653f52b17b13bb95 /arch/sparc/kernel/traps_64.c | |
parent | 6a47dc1418682c83d603b491df1d048f73aa973e (diff) | |
parent | 79dba2eaa771c3173957eccfd288e0e0d12e4d3f (diff) | |
download | linux-fsl-qoriq-7407cf355fdf5500430be966dbbde84a27293bad.tar.xz |
Merge branch 'master' into for-2.6.35
Conflicts:
fs/block_dev.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/sparc/kernel/traps_64.c')
-rw-r--r-- | arch/sparc/kernel/traps_64.c | 26 |
1 files changed, 3 insertions, 23 deletions
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index 837dfc2..9da57f0 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]); |