Dan Carpenter d0c80f48fb coresight: Fix signedness bug in tmc_etr_buf_insert_barrier_packet() ... commit f67bc15e52 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 12:42:15 +01:00
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coresight	coresight: Fix signedness bug in tmc_etr_buf_insert_barrier_packet()	2023-05-30 12:42:15 +01:00
intel_th	intel_th: pci: Add Meteor Lake-P support	2022-08-25 11:15:30 +02:00
stm	stm class: Fix module init return on allocation failure	2021-01-27 11:05:40 +01:00
Kconfig	hwtracing: Add HW tracing support menu	2018-03-29 13:38:10 +03:00