diff options
| author | Stanislav Kinsbursky <[email protected]> | 2012-11-26 16:29:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2012-11-26 17:41:24 -0800 |
| commit | 05f564849d49499ced97913a0914b5950577d07d (patch) | |
| tree | eaab16738a3d405084466d5a9aca01db37e41f73 /tools/perf/util/trace-event-scripting.c | |
| parent | 56c176c9cac9a77249fa1736bfd792f379d61942 (diff) | |
proc: check vma->vm_file before dereferencing
Commit 7b540d0646ce ("proc_map_files_readdir(): don't bother with
grabbing files") switched proc_map_files_readdir() to use @f_mode
directly instead of grabbing @file reference, but same time the test for
@vm_file presence was lost leading to nil dereference. The patch brings
the test back.
The all proc_map_files feature is CONFIG_CHECKPOINT_RESTORE wrapped
(which is set to 'n' by default) so the bug doesn't affect regular
kernels.
The regression is 3.7-rc1 only as far as I can tell.
[[email protected]: provided changelog]
Signed-off-by: Stanislav Kinsbursky <[email protected]>
Acked-by: Cyrill Gorcunov <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions