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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-02-15 19:31:23 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-02-16 23:09:47 +1100 |
| commit | df45a55788286c541449d82ee09fef3ac5ff77a1 (patch) | |
| tree | 6cac61e962dd1bf768a0fcbf9a90297720a91efc /tools/perf/scripts/python | |
| parent | 34d8dac807f0ee3dc42ab45bdb284a3caf2b5ed1 (diff) | |
| download | cachepc-linux-df45a55788286c541449d82ee09fef3ac5ff77a1.tar.gz cachepc-linux-df45a55788286c541449d82ee09fef3ac5ff77a1.zip | |
powerpc/ftrace: Add recursion protection in prepare_ftrace_return()
The function_graph_enter() does not provide any recursion protection.
Add a protection in prepare_ftrace_return() in case
function_graph_enter() calls something that gets
function graph traced.
Fixes: 830213786c49 ("powerpc/ftrace: directly call of function graph tracer by ftrace caller")
Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/74edf2ff0a60e66b0d9225a137100a86a0557032.1644949750.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions