The patch titled
Subject: printk: when dumping regs, show the stack, not thread_info
has been added to the -mm tree. Its filename is
printk-when-dumping-regs-show-the-stack-not-thread_info.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/printk-when-dumping-regs-show-the-stack-not-thread_info.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/printk-when-dumping-regs-show-the-stack-not-thread_info.patch
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------------------------------------------------------
From: Andy Lutomirski <luto@xxxxxxxxxx>
Subject: printk: when dumping regs, show the stack, not thread_info
We currently show:
task: <current> ti: <current_thread_info()> task.ti: <task_thread_info(current)>"
"ti" and "task.ti" are redundant, and neither is actually what we
want to show, which the the base of the thread stack. Change the
display to show the stack pointer explicitly.
Link: http://lkml.kernel.org/r/543ac5bd66ff94000a57a02e11af7239571a3055.1468523549.git.luto@xxxxxxxxxx
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/printk/printk.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff -puN kernel/printk/printk.c~printk-when-dumping-regs-show-the-stack-not-thread_info kernel/printk/printk.c
--- a/kernel/printk/printk.c~printk-when-dumping-regs-show-the-stack-not-thread_info
+++ a/kernel/printk/printk.c
@@ -3177,9 +3177,8 @@ void show_regs_print_info(const char *lo
{
dump_stack_print_info(log_lvl);
- printk("%stask: %p ti: %p task.ti: %p\n",
- log_lvl, current, current_thread_info(),
- task_thread_info(current));
+ printk("%stask: %p task.stack: %p\n",
+ log_lvl, current, task_stack_page(current));
}
#endif
_
Patches currently in -mm which might be from luto@xxxxxxxxxx are
mm-track-nr_kernel_stack-in-kib-instead-of-number-of-stacks.patch
mm-fix-memcg-stack-accounting-for-sub-page-stacks.patch
kdb-use-task_cpu-instead-of-task_thread_info-cpu.patch
printk-when-dumping-regs-show-the-stack-not-thread_info.patch
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