Vladis Dronov a05776cb72 ptp: free ptp device pin descriptors properly ... [ Upstream commit 75718584cb ] There is a bug in ptp_clock_unregister(), where ptp_cleanup_pin_groups() first frees ptp->pin_{,dev_}attr, but then posix_clock_unregister() needs them to destroy a related sysfs device. These functions can not be just swapped, as posix_clock_unregister() frees ptp which is needed in the ptp_cleanup_pin_groups(). Fix this by calling ptp_cleanup_pin_groups() in ptp_clock_release(), right before ptp is freed. This makes this patch fix an UAF bug in a patch which fixes an UAF bug. Reported-by: Antti Laakso <antti.laakso@intel.com> Fixes: a33121e548 ("ptp: fix the race between the release of ptp_clock and cdev") Link: https://lore.kernel.org/netdev/3d2bd09735dbdaf003585ca376b7c1e5b69a19bd.camel@intel.com/ Signed-off-by: Vladis Dronov <vdronov@redhat.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-01-23 08:20:35 +01:00
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Kconfig
Makefile
ptp_chardev.c	ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl	2019-02-12 19:45:58 +01:00
ptp_clock.c	ptp: free ptp device pin descriptors properly	2020-01-23 08:20:35 +01:00
ptp_dte.c
ptp_ixp46x.c
ptp_kvm.c	x86/pvclock: add setter for pvclock_pvti_cpu0_va	2019-01-31 08:13:47 +01:00
ptp_pch.c
ptp_private.h	ptp: fix the race between the release of ptp_clock and cdev	2020-01-04 14:00:12 +01:00
ptp_sysfs.c