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linux/kernel/irq
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Ben Dai 0c8dea3fd5 genirq/timings: Prevent potential array overflow in __irq_timings_store() 
commit b9cc7d8a4656a6e815852c27ab50365009cb69c1 upstream.

When the interrupt interval is greater than 2 ^ PREDICTION_BUFFER_SIZE *
PREDICTION_FACTOR us and less than 1s, the calculated index will be greater
than the length of irqs->ema_time[]. Check the calculated index before
using it to prevent array overflow.

Fixes: 23aa3b9a6b7d ("genirq/timings: Encapsulate storing function")
Signed-off-by: Ben Dai <ben.dai@unisoc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210425150903.25456-1-ben.dai9703@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18 08:57:02 +02:00
..
affinity.c
genirq/affinity: Remove const qualifier from node_to_cpumask argument
2019-08-28 12:20:43 +02:00
autoprobe.c
genirq: Delay deactivation in free_irq()
2019-07-03 10:12:28 +02:00
chip.c
genirq: Provide IRQCHIP_AFFINITY_PRE_STARTUP
2021-08-18 08:57:02 +02:00
cpuhotplug.c
genirq: Delay deactivation in free_irq()
2019-07-03 10:12:28 +02:00
debug.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
2018-02-01 13:36:15 -08:00
debugfs.c
genirq/debugfs: Add missing sanity checks to interrupt injection
2020-04-17 10:50:11 +02:00
devres.c
genirq/devres: Use struct_size() in devm_kzalloc()
2019-04-16 21:54:03 +02:00
dummychip.c
genirq: Add missing SPDX identifiers
2018-03-20 14:23:28 +01:00
generic-chip.c
genirq: Add missing SPDX identifiers
2018-03-20 14:23:28 +01:00
handle.c
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
internals.h
genirq/proc: Reject invalid affinity masks (again)
2020-02-28 17:22:26 +01:00
ipi.c
genirq: Fix various typos in comments
2018-12-18 14:22:28 +01:00
irq_sim.c
irq/irq_sim: add irq_set_type() callback
2019-02-19 17:42:28 +01:00
irqdesc.c
genirq: Properly pair kobject_del() with kobject_add()
2019-08-19 21:41:19 +02:00
irqdomain.c
genirq/irqdomain: Don't try to free an interrupt that has no mapping
2020-12-30 11:51:14 +01:00
Kconfig
genirq: Let GENERIC_IRQ_IPI select IRQ_DOMAIN_HIERARCHY
2020-11-18 19:20:16 +01:00
Makefile
genirq/timings: Add selftest for circular array
2019-06-12 10:47:04 +02:00
manage.c
genirq: Disable interrupts for force threaded handlers
2021-03-24 11:26:45 +01:00
matrix.c
genirq/matrix: Prevent allocation counter corruption
2021-05-11 14:04:05 +02:00
migration.c
genirq/migration: Avoid out of line call if pending is not set
2018-06-06 15:18:20 +02:00
msi.c
genirq/msi: Ensure deactivation on teardown
2021-08-18 08:57:02 +02:00
pm.c
genirq/PM: Always unlock IRQ descriptor in rearm_wake_irq()
2020-08-21 13:05:20 +02:00
proc.c
genirq/proc: Reject invalid affinity masks (again)
2020-02-28 17:22:26 +01:00
resend.c
genirq: Prevent NULL pointer dereference in resend_irqs()
2019-09-05 21:31:14 +02:00
settings.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spurious.c
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
timings.c
genirq/timings: Prevent potential array overflow in __irq_timings_store()
2021-08-18 08:57:02 +02:00