diff options
Diffstat (limited to 'arch/i386/kernel/traps.c')
| -rw-r--r-- | arch/i386/kernel/traps.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index 86d8476be4f..c447807e2a4 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -161,12 +161,19 @@ dump_trace_unwind(struct unwind_frame_info *info, void *data) { struct ops_and_data *oad = (struct ops_and_data *)data; int n = 0; + unsigned long sp = UNW_SP(info); + if (arch_unw_user_mode(info)) + return -1; while (unwind(info) == 0 && UNW_PC(info)) { n++; oad->ops->address(oad->data, UNW_PC(info)); if (arch_unw_user_mode(info)) break; + if ((sp & ~(PAGE_SIZE - 1)) == (UNW_SP(info) & ~(PAGE_SIZE - 1)) + && sp > UNW_SP(info)) + break; + sp = UNW_SP(info); } return n; } |