Dan Carpenter 225a5f394b coresight: Fix signedness bug in tmc_etr_buf_insert_barrier_packet() ... commit f67bc15e526bb9920683ad6c1891ff9e08981335 upstream. This code generates a Smatch warning: drivers/hwtracing/coresight/coresight-tmc-etr.c:947 tmc_etr_buf_insert_barrier_packet() error: uninitialized symbol 'bufp'. The problem is that if tmc_sg_table_get_data() returns -EINVAL, then when we test if "len < CORESIGHT_BARRIER_PKT_SIZE", the negative "len" value is type promoted to a high unsigned long value which is greater than CORESIGHT_BARRIER_PKT_SIZE. Fix this bug by adding an explicit check for error codes. Fixes: 75f4e3619f ("coresight: tmc-etr: Add transparent buffer management") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/7d33e244-d8b9-4c27-9653-883a13534b01@kili.mountain Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-05-30 14:03:22 +01:00
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coresight	coresight: Fix signedness bug in tmc_etr_buf_insert_barrier_packet()	2023-05-30 14:03:22 +01:00
intel_th	intel_th: pci: Add Raptor Lake-S CPU support	2022-07-08 15:43:15 +02:00
ptt	hwtracing: hisi_ptt: Only add the supported devices to the filters list	2023-03-10 09:33:31 +01:00
stm	stm class: Use correct UUID APIs	2021-04-16 07:26:50 +02:00
Kconfig	hwtracing: hisi_ptt: Add trace function support for HiSilicon PCIe Tune and Trace device	2022-09-08 16:26:17 -06:00