mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-12 21:57:43 +00:00
Code Issues Releases Wiki Activity

ARM: allow unwinder to unwind recursive functions

Browse source 
Allow the unwinder to unwind recursive functions if the stack makes
progress, even if the PC is the same. This allows tracing through
recursive __switchdev_handle_port_attr_set() and similar.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Russell King 2019-12-22 16:39:40 +00:00
parent bb6d3fb354
commit 8d54a27593
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/arm/kernel/unwind.c
View file

@ -444,7 +444,7 @@ int unwind_frame(struct stackframe *frame)
ctrl.vrs[PC] = ctrl.vrs[LR];
/* check for infinite loop */
if (frame->pc == ctrl.vrs[PC])
if (frame->pc == ctrl.vrs[PC] && frame->sp == ctrl.vrs[SP])
return -URC_FAILURE;
frame->fp = ctrl.vrs[FP];