lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ftrace: check for failure for all conversions

Browse Source 
Due to legacy code from back when the dynamic tracer used a daemon,
only core kernel code was checking for failures. This is no longer
the case. We must check for failures any time we perform text modifications.

Cc: stable@kernel.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
2009-10-07 16:57:56 -04:00
committed by Steven Rostedt
parent e7247a15ff
commit 3279ba37db
1 changed files with 3 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
kernel/trace/ftrace.c
View File

@@ -1074,14 +1074,9 @@ static void ftrace_replace_code(int enable)
failed = __ftrace_replace_code(rec, enable); failed = __ftrace_replace_code(rec, enable);
if (failed) { if (failed) {
rec->flags |= FTRACE_FL_FAILED; rec->flags |= FTRACE_FL_FAILED;
if ((system_state == SYSTEM_BOOTING) || ftrace_bug(failed, rec->ip);
!core_kernel_text(rec->ip)) { /* Stop processing */
ftrace_free_rec(rec); return;
} else {
ftrace_bug(failed, rec->ip);
/* Stop processing */
return;
}
} }
} while_for_each_ftrace_rec(); } while_for_each_ftrace_rec();
} }