Kurt Kanzenbach 672bd0519e ptp: vclock: Switch from RCU to SRCU ...

The usage of PTP vClocks leads immediately to the following issues with
ptp4l with LOCKDEP and DEBUG_ATOMIC_SLEEP enabled: "BUG: sleeping function
called from invalid context".

ptp_convert_timestamp() acquires a mutex_t within a RCU read section.  This
is illegal, because acquiring a mutex_t can result in voluntary scheduling
request which is not allowed within a RCU read section.

Replace the RCU usage with SRCU where sleeping is allowed.

Reported-by: Florian Zeitz <florian.zeitz@schettke.com>
Closes: https://lore.kernel.org/all/00a8cce8-410e-4038-98af-49be6d93d7bd@schettke.com/
Fixes: 67d93ffc0f ("ptp: vclock: use mutex to fix "sleep on atomic" bug")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20260529-vclock_rcu-v2-1-02a5531fab92@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2026-06-03 18:58:54 -07:00

..

Kconfig

ptp: ptp_vmclock: remove dependency on CONFIG_ACPI

2026-02-02 18:06:01 -08:00

Makefile

ptp: qoriq: convert to use generic interfaces to set loopback mode

2025-09-09 19:28:52 -07:00

ptp_chardev.c

ptp: Allow exposing cycles only for clocks with free-running counter

2025-10-31 16:27:40 -07:00

ptp_clock.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ptp_clockmatrix.c

ptp: ptp_clockmatrix: Remove redundant semicolons

2025-08-14 17:35:49 -07:00

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

Get rid of 'remove_new' relic from platform driver struct

2024-12-01 15:12:43 -08:00

ptp_fc3.c

net: ptp: introduce .supported_extts_flags to ptp_clock_info

2025-04-15 20:20:57 -07:00

ptp_fc3.h

ptp: add FemtoClock3 Wireless as ptp hardware clock

2024-01-29 13:00:23 +00:00

ptp_idt82p33.c

net: ptp: introduce .supported_extts_flags to ptp_clock_info

2025-04-15 20:20:57 -07:00

ptp_idt82p33.h

ptp: idt82p33: Add .getmaxphase ptp_clock_info callback

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

ptp_ines.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ptp_kvm_arm.c

treewide: Remove system_counterval_t.cs, which is never read

2024-02-07 17:05:21 +01:00

ptp_kvm_common.c

treewide: Remove system_counterval_t.cs, which is never read

2024-02-07 17:05:21 +01:00

ptp_kvm_x86.c

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

2024-12-06 17:38:11 -08:00

ptp_mock.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ptp_netc.c

ptp: netc: only enable periodic pulse event interrupts for PPS

2025-09-17 15:18:58 -07:00

ptp_ocp.c

ptp: ocp: Add support for Xilinx-based Adva TimeCard variant

2026-03-13 19:07:58 -07:00

ptp_pch.c

kernel.h: drop hex.h and update all hex.h users

2026-01-20 19:44:19 -08:00

ptp_private.h

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-10-01 10:14:49 +02:00

ptp_qoriq.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ptp_s390.c

s390/time: Add PtP driver

2024-10-30 17:02:39 -07:00

ptp_sysfs.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ptp_vclock.c

ptp: vclock: Switch from RCU to SRCU

2026-06-03 18:58:54 -07:00

ptp_vmclock.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ptp_vmw.c

ptp: vmw: Convert to a platform driver

2026-03-17 19:06:19 -07:00