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| 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/profile.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/profile.c')
0 files changed, 0 insertions, 0 deletions