https://github.com/torvalds/linux
Revision 1245800c0f96eb6ebb368593e251d66c01e61022 authored by Steven Rostedt (Red Hat) on 24 September 2016, 02:57:13 UTC, committed by Steven Rostedt on 25 September 2016, 14:27:08 UTC
The iter->seq can be reset outside the protection of the mutex. So can
reading of user data. Move the mutex up to the beginning of the function.

Fixes: d7350c3f45694 ("tracing/core: make the read callbacks reentrants")
Cc: stable@vger.kernel.org # 2.6.30+
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
1 parent c87edb3
History
Tip revision: 1245800c0f96eb6ebb368593e251d66c01e61022 authored by Steven Rostedt (Red Hat) on 24 September 2016, 02:57:13 UTC
tracing: Move mutex to protect against resetting of seq data
Tip revision: 1245800
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