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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

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Pull arm64 fixes from Catalin Marinas:
 "arm64 and arm/perf fixes:

   - arm64 fix: debug exception unmasking on the CPU resume path

   - ARM PMU fixes: memory leak on error path and NULL pointer
     dereference"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: kernel: Fix unmasked debug exceptions when restoring mdscr_el1
  drivers/perf: arm_pmu: Fix NULL pointer dereference during probe
  drivers/perf: arm_pmu: Fix leak in error path
This commit is contained in:
Linus Torvalds
2016-09-03 12:31:37 -07:00
parent 593ee4edc5 744c6c37cc
commit 2bece1a010
2 changed files with 11 additions and 1 deletions
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9
arch/arm64/mm/proc.S
View File

@ -100,7 +100,16 @@ ENTRY(cpu_do_resume)
msr tcr_el1, x8
msr vbar_el1, x9
/*
* __cpu_setup() cleared MDSCR_EL1.MDE and friends, before unmasking
* debug exceptions. By restoring MDSCR_EL1 here, we may take a debug
* exception. Mask them until local_dbg_restore() in cpu_suspend()
* resets them.
*/
disable_dbg
msr mdscr_el1, x10
msr sctlr_el1, x12
/*
* Restore oslsr_el1 by writing oslar_el1

3
drivers/perf/arm_pmu.c
View File

@ -925,6 +925,7 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)
if (i > 0 && spi != using_spi) {
pr_err("PPI/SPI IRQ type mismatch for %s!\n",
dn->name);
of_node_put(dn);
kfree(irqs);
return -EINVAL;
}
@ -969,7 +970,7 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)
if (cpumask_weight(&pmu->supported_cpus) == 0) {
int irq = platform_get_irq(pdev, 0);
if (irq_is_percpu(irq)) {
if (irq >= 0 && irq_is_percpu(irq)) {
/* If using PPIs, check the affinity of the partition */
int ret;