tpm: tpm_vtpm_proxy: fix a race condition in /dev/vtpmx creation

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commit f4032d615f upstream.

/dev/vtpmx is made visible before 'workqueue' is initialized, which can
lead to a memory corruption in the worst case scenario.

Address this by initializing 'workqueue' as the very first step of the
driver initialization.

Cc: stable@vger.kernel.org
Fixes: 6f99612e25 ("tpm: Proxy driver for supporting multiple emulated TPMs")
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@tuni.fi>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Jarkko Sakkinen 2023-05-16 01:25:54 +03:00 • committed by Greg Kroah-Hartman

parent 0028313700

commit 99b998fb9d

1 changed files with 7 additions and 23 deletions

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drivers/char/tpm/tpm_vtpm_proxy.c

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