diff options
author | Steven Rostedt | 2009-03-17 00:20:15 +0100 |
---|---|---|
committer | Steven Rostedt | 2009-03-17 04:27:06 +0100 |
commit | 4ca530852346be239b7c19e7bec5d2b78855bebe (patch) | |
tree | 96e5252faaf362115a96ed6df7c4e4f698a027dc /kernel/exec_domain.c | |
parent | tracing/ftrace: fix the check on nopped sites (diff) | |
download | kernel-qcow2-linux-4ca530852346be239b7c19e7bec5d2b78855bebe.tar.gz kernel-qcow2-linux-4ca530852346be239b7c19e7bec5d2b78855bebe.tar.xz kernel-qcow2-linux-4ca530852346be239b7c19e7bec5d2b78855bebe.zip |
tracing: protect reader of cmdline output
Impact: fix to one cause of incorrect comm outputs in trace
The spinlock only protected the creation of a comm <=> pid pair.
But it was possible that a reader could look up a pid, and get the
wrong comm because it had no locking.
This also required changing trace_find_cmdline to copy the comm cache
and not just send back a pointer to it.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'kernel/exec_domain.c')
0 files changed, 0 insertions, 0 deletions