public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
linux/net/xfrm
History
Florian Westphal 7a474c3658 xfrm: policy: increment xfrm_hash_generation on hash rebuild 
Hash rebuild will re-set all the inexact entries, then re-insert them.
Lookups that can occur in parallel will therefore not find any policies.

This was safe when lookups were still guarded by rwlock.
After rcu-ification, lookups check the hash_generation seqcount to detect
when a hash resize takes place.  Hash rebuild missed the needed increment.

Hash resizes and hash rebuilds cannot occur in parallel (both acquire
hash_resize_mutex), so just increment xfrm_hash_generation, like resize.

Fixes: a7c44247f7 ("xfrm: policy: make xfrm_policy_lookup_bytype lockless")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2019-01-09 13:58:23 +01:00
..
Kconfig xfrm: prefer secpath_set over secpath_dup 2018-12-19 11:21:38 -08:00
Makefile xfrm: Add virtual xfrm interfaces 2018-06-23 16:07:25 +02:00
xfrm_algo.c xfrm: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:11 -07:00
xfrm_device.c net: use skb_sec_path helper in more places 2018-12-19 11:21:37 -08:00
xfrm_hash.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
xfrm_hash.h xfrm: use complete IPv6 addresses for hash 2018-10-15 10:09:18 +02:00
xfrm_input.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00
xfrm_interface.c xfrm: use secpath_exist where applicable 2018-12-19 11:21:37 -08:00
xfrm_ipcomp.c net: xfrm: use preempt-safe this_cpu_read() in ipcomp_alloc_tfms() 2018-03-13 07:46:37 +01:00
xfrm_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00
xfrm_policy.c xfrm: policy: increment xfrm_hash_generation on hash rebuild 2019-01-09 13:58:23 +01:00
xfrm_proc.c proc: introduce proc_create_net_single 2018-05-16 07:24:30 +02:00
xfrm_replay.c xfrm: Fix ESN sequence number handling for IPsec GSO packets. 2018-03-01 08:14:50 +01:00
xfrm_state.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2018-12-18 11:43:26 -08:00
xfrm_sysctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfrm_user.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2018-12-18 11:43:26 -08:00