Leo Yan cef047e0a5 coresight: trbe: Return NULL pointer for allocation failures ...

[ Upstream commit 8a55c161f7 ]

When the TRBE driver fails to allocate a buffer, it currently returns
the error code "-ENOMEM". However, the caller etm_setup_aux() only
checks for a NULL pointer, so it misses the error. As a result, the
driver continues and eventually causes a kernel panic.

Fix this by returning a NULL pointer from arm_trbe_alloc_buffer() on
allocation failures. This allows that the callers can properly handle
the failure.

Fixes: 3fbf7f011f ("coresight: sink: Add TRBE driver")
Reported-by: Tamas Zsoldos <tamas.zsoldos@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20250904-cs_etm_auxsetup_fix_error_handling-v2-1-a502d0bafb95@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-10-19 16:21:36 +02:00

..

coresight

coresight: trbe: Return NULL pointer for allocation failures

2025-10-19 16:21:36 +02:00

intel_th

intel_th: pci: Add Panther Lake-P/U support

2025-03-13 12:51:10 +01:00

stm

stm class: Fix a double free in stm_register_device()

2024-06-16 13:39:39 +02:00

Kconfig

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