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| author | Ben Hutchings <ben@decadent.org.uk> | 2015-09-26 12:23:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-22 14:39:22 -0700 |
| commit | 2bc9689906c7cae36e5fed5c6c796aefe850c382 (patch) | |
| tree | 94a65d6c72fc1a345b1d0ba5196c824a20eec6a1 /include | |
| parent | 8ea4b34355189e1f1eacaf2d825f2dce776b3b9c (diff) | |
| download | lwn-2bc9689906c7cae36e5fed5c6c796aefe850c382.tar.gz lwn-2bc9689906c7cae36e5fed5c6c796aefe850c382.zip | |
genirq: Fix race in register_irq_proc()
commit 95c2b17534654829db428f11bcf4297c059a2a7e upstream.
Per-IRQ directories in procfs are created only when a handler is first
added to the irqdesc, not when the irqdesc is created. In the case of
a shared IRQ, multiple tasks can race to create a directory. This
race condition seems to have been present forever, but is easier to
hit with async probing.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Link: http://lkml.kernel.org/r/1443266636.2004.2.camel@decadent.org.uk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions