Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 22:21:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

csky: Fixup kprobes handler couldn't change pc

Browse Source 
The "Changing Execution Path" section in the Documentation/kprobes.txt
said:

Since kprobes can probe into a running kernel code, it can change the
register set, including instruction pointer.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Guo Ren 2020-07-28 16:25:23 +00:00
parent f788bb2fb9
commit a5447fb9b3
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/csky/abiv2/mcount.S
View File

@ -55,7 +55,9 @@
.macro mcount_exit_regs
RESTORE_REGS_FTRACE
ldw t1, (sp, 0)
subi sp, 152
ldw t1, (sp, 4)
addi sp, 152
ldw r8, (sp, 4)
ldw lr, (sp, 8)
addi sp, 12