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860b7d2286
linux-next/arch/powerpc/perf
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Anju T Sudhakar 860b7d2286 powerpc/perf: Fix loop exit condition in nest_imc_event_init 
The data structure (i.e struct imc_mem_info) to hold the memory address
information for nest imc units is allocated based on the number of nodes
in the system.

nest_imc_event_init() traverse this struct array to calculate the memory
base address for the event-cpu. If we fail to find a match for the event
cpu's chip-id in imc_mem_info struct array, then the do-while loop will
iterate until we crash.

Fix this by changing the loop exit condition based on the number of
non zero vbase elements in the array, since the allocation is done for
nr_chips + 1.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 885dcd709b ("powerpc/perf: Add nest IMC PMU support")
Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-05-03 02:54:59 +10:00
..
req-gen powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
8xx-pmu.c powerpc/8xx: Use patch_site for perf counters setup 2018-10-26 21:58:58 +11:00
bhrb.S powerpc/perf: Add basic assembly code to read BHRB entries on POWER8 2013-04-26 16:11:11 +10:00
callchain.c powerpc/mm: Rename find_linux_pte_or_hugepte() 2017-08-17 23:13:46 +10:00
core-book3s.c powerpc/perf: Add generic compat mode pmu driver 2019-05-03 02:54:58 +10:00
core-fsl-emb.c powerpc/pmu/fsl: fix is_nmi test for irq mask change 2018-06-03 20:40:29 +10:00
e500-pmu.c powerpc/perf: Add stalled-cycles events 2013-01-10 17:00:56 +11:00
e6500-pmu.c powerpc/perf: Add e6500 PMU driver 2013-08-07 18:38:04 -05:00
generic-compat-pmu.c powerpc/perf: Add generic compat mode pmu driver 2019-05-03 02:54:58 +10:00
hv-24x7-catalog.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-24x7-domains.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-24x7.c perf/core, arch/powerpc: use PERF_PMU_CAP_NO_EXCLUDE for exclusion incapable PMUs 2019-01-21 11:01:26 +01:00
hv-24x7.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-common.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-gpci-requests.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-gpci.c perf/core, arch/powerpc: use PERF_PMU_CAP_NO_EXCLUDE for exclusion incapable PMUs 2019-01-21 11:01:26 +01:00
hv-gpci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
imc-pmu.c powerpc/perf: Fix loop exit condition in nest_imc_event_init 2019-05-03 02:54:59 +10:00
internal.h powerpc/perf: Add generic compat mode pmu driver 2019-05-03 02:54:58 +10:00
isa207-common.c powerpc/perf: Add constraints for power9 l2/l3 bus events 2018-12-20 20:53:11 +11:00
isa207-common.h powerpc/perf: Add constraints for power9 l2/l3 bus events 2018-12-20 20:53:11 +11:00
Makefile powerpc/perf: Add generic compat mode pmu driver 2019-05-03 02:54:58 +10:00
mpc7450-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00
perf_regs.c powerpc/perf: Update perf_regs structure to include MMCRA 2019-01-08 19:22:47 +11:00
power5-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00
power5+-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00
power6-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00
power7-events-list.h powerpc/perf: Make some new raw event codes available in sysfs 2014-03-24 09:48:23 +11:00
power7-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00
power8-events-list.h powerpc/perf: Add Power8 mem_access event to sysfs 2017-04-19 20:00:23 +10:00
power8-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00
power9-events-list.h powerpc/perf: Remove PM_BR_CMPL_ALT from power9 event list 2019-05-03 02:54:59 +10:00
power9-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00
ppc970-pmu.c powerpc/perf: init pmu from core-book3s 2019-05-03 02:54:58 +10:00