Jakub Kicinski 9a47949562 ptp: improve max_adj check against unreasonable values ... [ Upstream commit 475b92f932168a78da8109acd10bfb7578b8f2bb ] Scaled PPM conversion to PPB may (on 64bit systems) result in a value larger than s32 can hold (freq/scaled_ppm is a long). This means the kernel will not correctly reject unreasonably high ->freq values (e.g. > 4294967295ppb, 281474976645 scaled PPM). The conversion is equivalent to a division by ~66 (65.536), so the value of ppb is always smaller than ppm, but not small enough to assume narrowing the type from long -> s32 is okay. Note that reasonable user space (e.g. ptp4l) will not use such high values, anyway, 4289046510ppb ~= 4.3x, so the fix is somewhat pedantic. Fixes: d39a743511 ("ptp: validate the requested frequency adjustment.") Fixes: d94ba80ebb ("ptp: Added a brand new class driver for ptp clocks.") Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-06-23 14:42:45 +02:00
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idt8a340_reg.h	ptp: ptp_clockmatrix: update to support 4.8.7 firmware	2020-07-30 16:46:59 -07:00
Kconfig	phy: dp83640: select CONFIG_CRC32	2021-01-17 14:17:02 +01:00
Makefile	ptp: add VMware virtual PTP clock driver	2020-03-05 17:25:07 -08:00
ptp_chardev.c	ptp: only allow phase values lower than 1 period	2020-08-05 12:06:44 -07:00
ptp_clock.c	ptp: improve max_adj check against unreasonable values	2021-06-23 14:42:45 +02:00
ptp_clockmatrix.c	ptp: clockmatrix: bug fix for idtcm_strverscmp	2020-11-25 17:24:49 -08:00
ptp_clockmatrix.h	ptp: ptp_clockmatrix: use i2c_master_send for i2c write	2020-08-19 16:23:22 -07:00
ptp_dte.c	ptp: ptp_dte: use devm_platform_ioremap_resource() to simplify code	2019-10-10 16:21:13 -07:00
ptp_idt82p33.c	ptp: idt82p33: remove unnecessary comparison	2020-04-24 16:59:21 -07:00
ptp_idt82p33.h	ptp: Add a ptp clock driver for IDT 82P33 SMU.	2020-02-24 13:08:46 -08:00
ptp_ines.c	ptp: ptp_ines: Remove redundant null check	2020-08-26 07:08:59 -07:00
ptp_kvm.c	ptp_kvm: Make kvm_ptp_lock static	2020-04-20 11:02:56 -07:00
ptp_pch.c	ptp_pch: use generic power management	2020-06-25 12:35:44 -07:00
ptp_private.h	ptp: fix the race between the release of ptp_clock and cdev	2019-12-30 20:19:27 -08:00
ptp_qoriq_debugfs.c	ptp_qoriq: add little enadian support	2019-02-12 12:58:48 -05:00
ptp_qoriq.c	ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation	2021-04-10 13:36:09 +02:00
ptp_sysfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
ptp_vmw.c	ptp: add VMware virtual PTP clock driver	2020-03-05 17:25:07 -08:00