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linux/drivers/perf
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Xixin Liu f643f520c4 perf: RISC-V: check cpu_hw_evt before dereference in overflow IRQ 
The overflow IRQ handler dereferences cpu_hw_evt before the null check.
Move the check first. Defensive only; the cookie is valid on the normal
path today.

Fixes: a8625217a0 ("drivers/perf: riscv: Implement SBI PMU snapshot function")
Assisted-by: DeepSeek:deepseek-v3
Signed-off-by: Xixin Liu <liuxixin@kylinos.cn>
Link: https://patch.msgid.link/fdd42c791752.v2.1786420235.git.liuxixin@kylinos.cn
Signed-off-by: Paul Walmsley <pjw@kernel.org>
2026-09-01 19:19:48 -06:00
..
amlogic perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
arm_cspmu bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
hisilicon bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
alibaba_uncore_drw_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
apple_m1_cpu_pmu.c perf/apple_m1: Remove driver-specific throttle support 2025-05-21 13:57:44 +02:00
arm_brbe.c perf: arm_pmuv3: Add support for the Branch Record Buffer Extension (BRBE) 2025-07-08 17:58:49 +01:00
arm_brbe.h perf: arm_pmuv3: Add support for the Branch Record Buffer Extension (BRBE) 2025-07-08 17:58:49 +01:00
arm_dmc620_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
arm_dsu_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
arm_pmu_acpi.c perf: arm_pmu_acpi: Get rid of the edge-triggered interrupt oddity 2026-08-02 11:16:22 +00:00
arm_pmu_platform.c perf: arm_pmu: Request specific affinities for per CPU NMIs/interrupts 2025-10-27 17:16:35 +01:00
arm_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
arm_pmuv3.c perf: arm_pmuv3: Zero initialize hw_id branch stack field 2026-08-07 11:55:16 +00:00
arm_smmuv3_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
arm_spe_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
arm_v6_pmu.c perf/arm: Remove driver-specific throttle support 2025-05-21 13:57:44 +02:00
arm_v7_pmu.c perf/arm: Remove driver-specific throttle support 2025-05-21 13:57:44 +02:00
arm_xscale_pmu.c perf/arm: Remove driver-specific throttle support 2025-05-21 13:57:44 +02:00
arm-cci.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
arm-ccn.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
arm-cmn.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
arm-ni.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
cxl_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
dwc_pcie_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
fsl_imx8_ddr_perf.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
fsl_imx9_ddr_perf.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
fujitsu_uncore_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
Kconfig perf: qcom: Unify user-visible "Qualcomm" name 2026-05-19 11:33:26 +01:00
Makefile perf: add NVIDIA Tegra410 C2C PMU 2026-03-24 12:37:33 +00:00
marvell_cn10k_ddr_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
marvell_cn10k_tad_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
marvell_pem_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
nvidia_t410_c2c_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
nvidia_t410_cmem_latency_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
qcom_l2_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
qcom_l3_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
riscv_pmu_legacy.c perf: RISC-V: store available counter mask as bitmap 2026-09-01 19:19:26 -06:00
riscv_pmu_sbi.c perf: RISC-V: check cpu_hw_evt before dereference in overflow IRQ 2026-09-01 19:19:48 -06:00
riscv_pmu.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
starfive_starlink_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00
thunderx2_pmu.c perf: Use sysfs_emit() for cpumask show callbacks 2026-07-22 15:38:37 -04:00
xgene_pmu.c bitmap updates for v7.3 2026-08-20 11:41:46 -07:00