korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-28 14:44:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

Blacklist properly on all archs

Browse Source 
The way to blacklist notrace functions for kprobes was not using
 the proper kconfig which caused some archs (powerpc) from blacklisting
 them.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCX/y/kRQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qqUNAP9AAvvNt1xEA9XF1fsiYTEZuRZJYh70
 kmraYV2r35EPVwD+ORLRFO5eIL8j4SQlome3MuC1iFLak9SKVT5pWOLcDQI=
 =AtWi
 -----END PGP SIGNATURE-----

Merge tag 'trace-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Blacklist properly on all archs.

  The code to blacklist notrace functions for kprobes was not using the
  right kconfig option, which caused some archs (powerpc) to possibly
  not blacklist them"

* tag 'trace-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/kprobes: Do the notrace functions check without kprobes on ftrace
This commit is contained in:
Linus Torvalds 2021-01-11 14:37:13 -08:00
commit a0d54b4f5b
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/trace/Kconfig
View File

@ -538,7 +538,7 @@ config KPROBE_EVENTS
config KPROBE_EVENTS_ON_NOTRACE
bool "Do NOT protect notrace function from kprobe events"
depends on KPROBE_EVENTS
depends on KPROBES_ON_FTRACE
depends on DYNAMIC_FTRACE
default n
help
This is only for the developers who want to debug ftrace itself

2
kernel/trace/trace_kprobe.c
View File

@ -434,7 +434,7 @@ static int disable_trace_kprobe(struct trace_event_call *call,
return 0;
}
#if defined(CONFIG_KPROBES_ON_FTRACE) && \
#if defined(CONFIG_DYNAMIC_FTRACE) && \
!defined(CONFIG_KPROBE_EVENTS_ON_NOTRACE)
static bool __within_notrace_func(unsigned long addr)
{