linux/net/xfrm
Leon Romanovsky 94b95dfaa8 xfrm: release all offloaded policy memory
Failure to add offloaded policy will cause to the following
error once user will try to reload driver.

Unregister_netdevice: waiting for eth3 to become free. Usage count = 2

This was caused by xfrm_dev_policy_add() which increments reference
to net_device. That reference was supposed to be decremented
in xfrm_dev_policy_free(). However the latter wasn't called.

 unregister_netdevice: waiting for eth3 to become free. Usage count = 2
 leaked reference.
  xfrm_dev_policy_add+0xff/0x3d0
  xfrm_policy_construct+0x352/0x420
  xfrm_add_policy+0x179/0x320
  xfrm_user_rcv_msg+0x1d2/0x3d0
  netlink_rcv_skb+0xe0/0x210
  xfrm_netlink_rcv+0x45/0x50
  netlink_unicast+0x346/0x490
  netlink_sendmsg+0x3b0/0x6c0
  sock_sendmsg+0x73/0xc0
  sock_write_iter+0x13b/0x1f0
  vfs_write+0x528/0x5d0
  ksys_write+0x120/0x150
  do_syscall_64+0x3d/0x90
  entry_SYSCALL_64_after_hwframe+0x46/0xb0

Fixes: 919e43fad5 ("xfrm: add an interface to offload policy")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2023-04-21 08:51:48 +02:00
..
espintcp.c net/sock: Introduce trace_sk_data_ready() 2023-01-23 11:26:50 +00:00
Kconfig xfrm/compat: Add 32=>64-bit messages translator 2020-09-24 08:53:03 +02:00
Makefile xfrm: interface: Add unstable helpers for setting/getting XFRM metadata from TC-BPF 2022-12-05 21:58:27 -08:00
xfrm_algo.c xfrm: Add support for SM4 symmetric cipher algorithm 2021-12-23 09:32:51 +01:00
xfrm_compat.c xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr() 2023-01-23 07:44:09 +01:00
xfrm_device.c netlink: provide an ability to set default extack message 2023-02-01 21:04:09 -08:00
xfrm_hash.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
xfrm_hash.h xfrm: add state hashtable keyed by seq 2021-05-14 13:52:01 +02:00
xfrm_inout.h xfrm: move xfrm4_extract_header to common helper 2020-05-06 09:40:08 +02:00
xfrm_input.c xfrm: fix bug with DSCP copy to v6 from v4 tunnel 2023-01-30 11:31:58 +01:00
xfrm_interface_bpf.c bpf: Add __bpf_kfunc tag to all kfuncs 2023-02-02 00:25:14 +01:00
xfrm_interface_core.c Fix XFRM-I support for nested ESP tunnels 2023-01-09 07:11:05 +01:00
xfrm_ipcomp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-10-03 17:44:18 -07:00
xfrm_output.c xfrm: add TX datapath support for IPsec packet offload mode 2022-12-05 10:34:49 +01:00
xfrm_policy.c xfrm: don't check the default policy if the policy allows the packet 2023-04-06 12:04:31 +02:00
xfrm_proc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xfrm_replay.c xfrm: replay: Fix ESN wrap around for GSO 2022-10-19 09:00:53 +02:00
xfrm_state.c ipsec-2023-03-15 2023-03-16 17:23:48 -07:00
xfrm_sysctl.c
xfrm_user.c xfrm: release all offloaded policy memory 2023-04-21 08:51:48 +02:00