Jakub Kicinski 475b92f932 ptp: improve max_adj check against unreasonable values ... 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>		2021-06-15 10:59:46 -07:00
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idt8a340_reg.h	ptp: ptp_clockmatrix: Add wait_for_sys_apll_dpll_lock.	2021-02-17 13:49:25 -08:00
Kconfig	ptp: arm/arm64: Enable ptp_kvm for arm/arm64	2021-04-07 16:33:20 +01:00
Makefile	ptp: arm/arm64: Enable ptp_kvm for arm/arm64	2021-04-07 16:33:20 +01:00
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	2021-06-15 10:59:46 -07:00
ptp_clockmatrix.c	ptp: ptp_clockmatrix: Demote non-kernel-doc header to standard comment	2021-03-12 17:09:34 -08:00
ptp_clockmatrix.h	ptp: ptp_clockmatrix: Remove unused header declarations.	2021-02-17 13:49:25 -08:00
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: optimize _idt82p33_adjfine	2020-11-07 13:10:31 -08:00
ptp_idt82p33.h	ptp: idt82p33: use i2c_master_send for bus write	2020-11-07 13:10:27 -08:00
ptp_ines.c	ptp: ptp_ines: use new PTP_MSGTYPE_* define(s)	2020-11-23 13:43:39 -08:00
ptp_kvm_arm.c	ptp: arm/arm64: Enable ptp_kvm for arm/arm64	2021-04-07 16:33:20 +01:00
ptp_kvm_common.c	ptp: Don't print an error if ptp_kvm is not supported	2021-04-20 17:17:55 +01:00
ptp_kvm_x86.c	ptp: Reorganize ptp_kvm.c to make it arch-independent	2021-04-07 16:33:07 +01:00
ptp_ocp.c	ptp: ocp: Fix a resource leak in an error handling path	2021-05-12 14:06:33 -07:00
ptp_pch.c	ptp: ptp_p: Demote non-conformant kernel-doc headers and supply a param description	2021-03-12 17:09:34 -08:00
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	2021-03-24 12:10:03 -07:00
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