spi: fix use-after-free on controller registration failure

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Make sure to deregister from driver core also in the unlikely event that
per-cpu statistics allocation fails during controller registration to
avoid use-after-free (of driver resources) and unclocked register
accesses.

Fixes: 6598b91b5a ("spi: spi.c: Convert statistics to per-cpu u64_stats_t")
Cc: stable@vger.kernel.org	# 6.0
Cc: David Jander <david@protonic.nl>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260312151817.32100-2-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

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Johan Hovold 2026-03-12 16:18:13 +01:00 • committed by Mark Brown

parent ba3402f6c8

commit 8634e05b08

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drivers/spi/spi.c

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