[PATCH v1 0/4] firmware/clk: arm_scpi hardening (leak, OPP bounds, cpufreq)

[Xixin Liu <liuxixin@kylinos.cn>]

Hi,

This series hardens the OF SCPI firmware and clock paths against a few
real defects found while reviewing linux-next:

  1) device_node leak in scpi_dev_domain_id() after
     of_parse_phandle_with_args()
  2) DVFS OPP count from SCP trusted beyond MAX_DVFS_OPPS (OOB read /
     bad OPP table size)
  3) DVFS index used as clock rate without an upper bound check
  4) scpi-cpufreq registered once only, and cleared on register failure
     so remove() does not unregister an ERR_PTR

Please review.

Thanks,
Xixin Liu

---

Xixin Liu (4):
  firmware: arm_scpi: fix device_node leak in scpi_dev_domain_id
  firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS
  clk: scpi: bound-check DVFS index in scpi_dvfs_recalc_rate
  clk: scpi: register scpi-cpufreq once and clear on failure

 drivers/clk/clk-scpi.c      | 8 ++++++--
 drivers/firmware/arm_scpi.c | 9 ++++++---
 2 files changed, 12 insertions(+), 5 deletions(-)

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2.53.0