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The newly added ftrace_print_array_seq() function had a bug in it. Luckily,

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the only user of it didn't make the 4.1 merge window. But the helper
 function should be fixed before 4.2 when the users start coming in.
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Merge tag 'trace-fixes-v4.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "The newly added ftrace_print_array_seq() function had a bug in it.
  Luckily, the only user of it didn't make the 4.1 merge window.

  But the helper function should be fixed before 4.2 when the users
  start coming in"

* tag 'trace-fixes-v4.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Make ftrace_print_array_seq compute buf_len
This commit is contained in:
Linus Torvalds 2015-05-08 18:22:05 -07:00
parent 3e0283a53f ac01ce1410
commit 26b293e854
2 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/linux/ftrace_event.h
View file

@ -46,7 +46,7 @@ const char *ftrace_print_hex_seq(struct trace_seq *p,
const unsigned char *buf, int len);
const char *ftrace_print_array_seq(struct trace_seq *p,
const void *buf, int buf_len,
const void *buf, int count,
size_t el_size);
struct trace_iterator;

3
kernel/trace/trace_output.c
View file

@ -178,12 +178,13 @@ ftrace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len)
EXPORT_SYMBOL(ftrace_print_hex_seq);
const char *
ftrace_print_array_seq(struct trace_seq *p, const void *buf, int buf_len,
ftrace_print_array_seq(struct trace_seq *p, const void *buf, int count,
size_t el_size)
{
const char *ret = trace_seq_buffer_ptr(p);
const char *prefix = "";
void *ptr = (void *)buf;
size_t buf_len = count * el_size;
trace_seq_putc(p, '{');