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linux-next/include
Vlad Buslov dbf47a2a09 net: sched: act_sample: fix psample group handling on overwrite
Action sample doesn't properly handle psample_group pointer in overwrite
case. Following issues need to be fixed:

- In tcf_sample_init() function RCU_INIT_POINTER() is used to set
  s->psample_group, even though we neither setting the pointer to NULL, nor
  preventing concurrent readers from accessing the pointer in some way.
  Use rcu_swap_protected() instead to safely reset the pointer.

- Old value of s->psample_group is not released or deallocated in any way,
  which results resource leak. Use psample_group_put() on non-NULL value
  obtained with rcu_swap_protected().

- The function psample_group_put() that released reference to struct
  psample_group pointed by rcu-pointer s->psample_group doesn't respect rcu
  grace period when deallocating it. Extend struct psample_group with rcu
  head and use kfree_rcu when freeing it.

Fixes: 5c5670fae4 ("net/sched: Introduce sample tc action")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-28 15:53:51 -07:00
..
acpi It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
asm-generic include/asm-generic/5level-fixup.h: fix variable 'p4d' set but not used 2019-08-13 16:06:52 -07:00
clocksource clocksource/drivers: Continue making Hyper-V clocksource ISA agnostic 2019-07-03 11:00:59 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
drm drm/fb-helper: Instanciate shadow FB if configured in device's mode_config 2019-08-01 15:01:35 +02:00
dt-bindings ARM: Device-tree updates 2019-07-19 17:19:24 -07:00
keys request_key improvements 2019-07-08 19:19:37 -07:00
kvm KVM: arm/arm64: Sync ICH_VMCR_EL2 back when about to block 2019-08-05 15:36:46 +01:00
linux Add genphy_c45_config_aneg() function to phy-c45.c 2019-08-27 20:21:15 -07:00
math-emu
media media updates for v5.3-rc1 2019-07-09 09:47:22 -07:00
misc auxdisplay: charlcd: move charlcd.h to drivers/auxdisplay 2019-08-08 19:59:17 +02:00
net net: sched: act_sample: fix psample group handling on overwrite 2019-08-28 15:53:51 -07:00
pcmcia It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
ras
rdma RDMA/restrack: Rewrite PID namespace check to be reliable 2019-08-20 13:44:44 -04:00
scsi scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure 2019-07-29 21:12:35 -04:00
soc ARC updates for 5.3-rc7 2019-08-27 10:50:27 -07:00
sound sound fixes for 5.3-rc4 2019-08-09 09:21:27 -07:00
target
trace rxrpc: Fix read-after-free in rxrpc_queue_local() 2019-08-14 11:37:51 +01:00
uapi Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-08-27 10:12:48 -07:00
vdso vdso: Remove superfluous #ifdef __KERNEL__ in vdso/datapage.h 2019-06-26 07:28:09 +02:00
video drm main pull request for v5.3-rc1 (sans mm changes) 2019-07-15 19:04:27 -07:00
xen xen: avoid link error on ARM 2019-07-31 08:14:12 +02:00
Kbuild kbuild: add net/netfilter/nf_tables_offload.h to header-test blacklist. 2019-07-21 11:43:43 -07:00