Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
s390: remove task_show_regs
task_show_regs used to be a debugging aid in the early bringup days
of Linux on s390. /proc/<pid>/status is a world readable file, it
is not a good idea to show the registers of a process. The only
correct fix is to remove task_show_regs.
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
authored by
Martin Schwidefsky
and committed by
Linus Torvalds
261cd298
1abe3af2
-45
-5
arch/s390/include/asm/processor.h
-5
arch/s390/include/asm/processor.h
···
148
148
*/
149
149
extern unsigned long thread_saved_pc(struct task_struct *t);
150
150
151
-
/*
152
-
* Print register of task into buffer. Used in fs/proc/array.c.
153
-
*/
154
-
extern void task_show_regs(struct seq_file *m, struct task_struct *task);
155
-
156
151
extern void show_code(struct pt_regs *regs);
157
152
158
153
unsigned long get_wchan(struct task_struct *p);
-37
arch/s390/kernel/traps.c
-37
arch/s390/kernel/traps.c
···
237
237
show_last_breaking_event(regs);
238
238
}
239
239
240
-
/* This is called from fs/proc/array.c */
241
-
void task_show_regs(struct seq_file *m, struct task_struct *task)
242
-
{
243
-
struct pt_regs *regs;
244
-
245
-
regs = task_pt_regs(task);
246
-
seq_printf(m, "task: %p, ksp: %p\n",
247
-
task, (void *)task->thread.ksp);
248
-
seq_printf(m, "User PSW : %p %p\n",
249
-
(void *) regs->psw.mask, (void *)regs->psw.addr);
250
-
251
-
seq_printf(m, "User GPRS: " FOURLONG,
252
-
regs->gprs[0], regs->gprs[1],
253
-
regs->gprs[2], regs->gprs[3]);
254
-
seq_printf(m, " " FOURLONG,
255
-
regs->gprs[4], regs->gprs[5],
256
-
regs->gprs[6], regs->gprs[7]);
257
-
seq_printf(m, " " FOURLONG,
258
-
regs->gprs[8], regs->gprs[9],
259
-
regs->gprs[10], regs->gprs[11]);
260
-
seq_printf(m, " " FOURLONG,
261
-
regs->gprs[12], regs->gprs[13],
262
-
regs->gprs[14], regs->gprs[15]);
263
-
seq_printf(m, "User ACRS: %08x %08x %08x %08x\n",
264
-
task->thread.acrs[0], task->thread.acrs[1],
265
-
task->thread.acrs[2], task->thread.acrs[3]);
266
-
seq_printf(m, " %08x %08x %08x %08x\n",
267
-
task->thread.acrs[4], task->thread.acrs[5],
268
-
task->thread.acrs[6], task->thread.acrs[7]);
269
-
seq_printf(m, " %08x %08x %08x %08x\n",
270
-
task->thread.acrs[8], task->thread.acrs[9],
271
-
task->thread.acrs[10], task->thread.acrs[11]);
272
-
seq_printf(m, " %08x %08x %08x %08x\n",
273
-
task->thread.acrs[12], task->thread.acrs[13],
274
-
task->thread.acrs[14], task->thread.acrs[15]);
275
-
}
276
-
277
240
static DEFINE_SPINLOCK(die_lock);
278
241
279
242
void die(const char * str, struct pt_regs * regs, long err)