diff options
| -rw-r--r-- | arch/nds32/kernel/traps.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c index b66f889bc6df..ee0d9ae192a5 100644 --- a/arch/nds32/kernel/traps.c +++ b/arch/nds32/kernel/traps.c @@ -25,17 +25,8 @@ extern void show_pte(struct mm_struct *mm, unsigned long addr); void dump_mem(const char *lvl, unsigned long bottom, unsigned long top) { unsigned long first; - mm_segment_t fs; int i; - /* - * We need to switch to kernel mode so that we can use __get_user - * to safely read from kernel space. Note that we now dump the - * code first, just in case the backtrace kills us. - */ - fs = get_fs(); - set_fs(KERNEL_DS); - pr_emerg("%s(0x%08lx to 0x%08lx)\n", lvl, bottom, top); for (first = bottom & ~31; first < top; first += 32) { @@ -48,7 +39,9 @@ void dump_mem(const char *lvl, unsigned long bottom, unsigned long top) for (p = first, i = 0; i < 8 && p < top; i++, p += 4) { if (p >= bottom && p < top) { unsigned long val; - if (__get_user(val, (unsigned long *)p) == 0) + + if (get_kernel_nofault(val, + (unsigned long *)p) == 0) sprintf(str + i * 9, " %08lx", val); else sprintf(str + i * 9, " ????????"); @@ -56,8 +49,6 @@ void dump_mem(const char *lvl, unsigned long bottom, unsigned long top) } pr_emerg("%s%04lx:%s\n", lvl, first & 0xffff, str); } - - set_fs(fs); } EXPORT_SYMBOL(dump_mem); |