Thomas Weißschuh 14f06a5907 ptp: Ensure info->enable callback is always set ...

BugLink: https://bugs.launchpad.net/bugs/2114239

commit fd53aa40e65f518453115b6f56183b0c201db26b upstream.

The ioctl and sysfs handlers unconditionally call the ->enable callback.
Not all drivers implement that callback, leading to NULL dereferences.
Example of affected drivers: ptp_s390.c, ptp_vclock.c and ptp_mock.c.

Instead use a dummy callback if no better was specified by the driver.

Fixes: d94ba80ebb ("ptp: Added a brand new class driver for ptp clocks.")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/20250123-ptp-enable-v1-1-b015834d3a47@weissschuh.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>

2025-06-15 10:39:42 +03:00

..

Kconfig

ptp_ocp: implement DPLL ops

2023-09-17 11:50:20 +01:00

Makefile

net: ptp: create a mock-up PTP Hardware Clock driver

2023-08-09 15:59:21 -07:00

ptp_chardev.c

ptp: Properly handle compat ioctls

2025-06-15 10:37:56 +03:00

ptp_clock.c

ptp: Ensure info->enable callback is always set

2025-06-15 10:39:42 +03:00

ptp_clockmatrix.c

ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback

2023-06-20 09:02:33 +01:00

ptp_clockmatrix.h

ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback

2023-06-20 09:02:33 +01:00

ptp_dfl_tod.c

ptp: add ToD device driver for Intel FPGA cards

2023-03-29 21:25:48 -07:00

ptp_dte.c

ptp: convert remaining drivers to adjfine interface

2022-11-11 10:58:39 +00:00

ptp_idt82p33.c

ptp: idt82p33: Add .getmaxphase ptp_clock_info callback

2023-06-20 09:02:33 +01:00

ptp_idt82p33.h

ptp: idt82p33: Add .getmaxphase ptp_clock_info callback

2023-06-20 09:02:33 +01:00

ptp_ines.c

net: Convert PHYs hwtstamp callback to use kernel_hwtstamp_config

2023-11-18 14:52:56 +00:00

ptp_kvm_arm.c

ptp: kvm: Use decrypted memory in confidential guest on x86

2023-03-17 21:57:52 -07:00

ptp_kvm_common.c

ptp: kvm: Use decrypted memory in confidential guest on x86

2023-03-17 21:57:52 -07:00

ptp_kvm_x86.c

ptp: kvm: x86: Return EOPNOTSUPP instead of ENODEV from kvm_arch_ptp_init()

2025-04-15 19:58:36 +03:00

ptp_mock.c

net: ptp: create a mock-up PTP Hardware Clock driver

2023-08-09 15:59:21 -07:00

ptp_ocp.c

pps: Fix a use-after-free

2025-06-15 10:38:03 +03:00

ptp_pch.c

ptp_phc: convert .adjfreq to .adjfine

2022-11-11 10:58:39 +00:00

ptp_private.h

ptp: annotate data-race around q->head and q->tail

2023-11-13 20:51:37 -08:00

ptp_qoriq_debugfs.c

ptp_qoriq: add little enadian support

2019-02-12 12:58:48 -05:00

ptp_qoriq.c

ptp: Explicitly include correct DT includes

2023-07-18 11:27:49 +02:00

ptp_sysfs.c

ptp: fix integer overflow in max_vclocks_store

2024-08-13 12:12:51 +02:00

ptp_vclock.c

ptp: vclock: use mutex to fix "sleep on atomic" bug

2023-02-22 21:23:48 -08:00

ptp_vmw.c

ptp/vmware: Use VMware hypercall API

2025-01-17 14:45:05 +03:00