Yunsheng Lin 27463ad99f net: hns: Fix a skb used after free bug ... skb maybe freed in hns_nic_net_xmit_hw() and return NETDEV_TX_OK, which cause hns_nic_net_xmit to use a freed skb. BUG: KASAN: use-after-free in hns_nic_net_xmit_hw+0x62c/0x940... [17659.112635] alloc_debug_processing+0x18c/0x1a0 [17659.117208] __slab_alloc+0x52c/0x560 [17659.120909] kmem_cache_alloc_node+0xac/0x2c0 [17659.125309] __alloc_skb+0x6c/0x260 [17659.128837] tcp_send_ack+0x8c/0x280 [17659.132449] __tcp_ack_snd_check+0x9c/0xf0 [17659.136587] tcp_rcv_established+0x5a4/0xa70 [17659.140899] tcp_v4_do_rcv+0x27c/0x620 [17659.144687] tcp_prequeue_process+0x108/0x170 [17659.149085] tcp_recvmsg+0x940/0x1020 [17659.152787] inet_recvmsg+0x124/0x180 [17659.156488] sock_recvmsg+0x64/0x80 [17659.160012] SyS_recvfrom+0xd8/0x180 [17659.163626] __sys_trace_return+0x0/0x4 [17659.167506] INFO: Freed in kfree_skbmem+0xa0/0xb0 age=23 cpu=1 pid=13 [17659.174000] free_debug_processing+0x1d4/0x2c0 [17659.178486] __slab_free+0x240/0x390 [17659.182100] kmem_cache_free+0x24c/0x270 [17659.186062] kfree_skbmem+0xa0/0xb0 [17659.189587] __kfree_skb+0x28/0x40 [17659.193025] napi_gro_receive+0x168/0x1c0 [17659.197074] hns_nic_rx_up_pro+0x58/0x90 [17659.201038] hns_nic_rx_poll_one+0x518/0xbc0 [17659.205352] hns_nic_common_poll+0x94/0x140 [17659.209576] net_rx_action+0x458/0x5e0 [17659.213363] __do_softirq+0x1b8/0x480 [17659.217062] run_ksoftirqd+0x64/0x80 [17659.220679] smpboot_thread_fn+0x224/0x310 [17659.224821] kthread+0x150/0x170 [17659.228084] ret_from_fork+0x10/0x40 BUG: KASAN: use-after-free in hns_nic_net_xmit+0x8c/0xc0... [17751.080490] __slab_alloc+0x52c/0x560 [17751.084188] kmem_cache_alloc+0x244/0x280 [17751.088238] __build_skb+0x40/0x150 [17751.091764] build_skb+0x28/0x100 [17751.095115] __alloc_rx_skb+0x94/0x150 [17751.098900] __napi_alloc_skb+0x34/0x90 [17751.102776] hns_nic_rx_poll_one+0x180/0xbc0 [17751.107097] hns_nic_common_poll+0x94/0x140 [17751.111333] net_rx_action+0x458/0x5e0 [17751.115123] __do_softirq+0x1b8/0x480 [17751.118823] run_ksoftirqd+0x64/0x80 [17751.122437] smpboot_thread_fn+0x224/0x310 [17751.126575] kthread+0x150/0x170 [17751.129838] ret_from_fork+0x10/0x40 [17751.133454] INFO: Freed in kfree_skbmem+0xa0/0xb0 age=19 cpu=7 pid=43 [17751.139951] free_debug_processing+0x1d4/0x2c0 [17751.144436] __slab_free+0x240/0x390 [17751.148051] kmem_cache_free+0x24c/0x270 [17751.152014] kfree_skbmem+0xa0/0xb0 [17751.155543] __kfree_skb+0x28/0x40 [17751.159022] napi_gro_receive+0x168/0x1c0 [17751.163074] hns_nic_rx_up_pro+0x58/0x90 [17751.167041] hns_nic_rx_poll_one+0x518/0xbc0 [17751.171358] hns_nic_common_poll+0x94/0x140 [17751.175585] net_rx_action+0x458/0x5e0 [17751.179373] __do_softirq+0x1b8/0x480 [17751.183076] run_ksoftirqd+0x64/0x80 [17751.186691] smpboot_thread_fn+0x224/0x310 [17751.190826] kthread+0x150/0x170 [17751.194093] ret_from_fork+0x10/0x40 Fixes: 13ac695e7e ("net:hns: Add support of Hip06 SoC to the Hislicon Network Subsystem") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: lipeng <lipeng321@huawei.com> Reported-by: Jun He <hjat2005@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-07-08 11:05:21 +01:00
..
Makefile	net: add Hisilicon Network Subsystem basic ethernet support	2015-09-20 21:42:58 -07:00
hnae.c	net: hns: Avoid Hip06 chip TX packet line bug	2017-04-03 14:48:43 -07:00
hnae.h	net: hns: Use phy_driver to setup Phy loopback	2017-07-03 02:01:15 -07:00
hns_ae_adapt.c	net: hns: Avoid Hip06 chip TX packet line bug	2017-04-03 14:48:43 -07:00
hns_dsaf_gmac.c	net: hns: fix ethtool_get_strings overflow in hns driver	2017-05-02 15:08:21 -04:00
hns_dsaf_gmac.h	…
hns_dsaf_mac.c	net: hns: support deferred probe when no mdio	2017-04-30 22:39:24 -04:00
hns_dsaf_mac.h	format-security: move static strings to const	2017-05-08 17:15:14 -07:00
hns_dsaf_main.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-06 08:24:51 -07:00
hns_dsaf_main.h	net: hns: Some checkpatch.pl script & warning fixes	2017-04-03 14:48:43 -07:00
hns_dsaf_misc.c	ACPI: hns_dsaf_acpi_dsm_guid can be static	2017-06-27 06:54:41 -07:00
hns_dsaf_misc.h	net: hns: Add support of ACPI to HNS driver RoCE Reset function	2016-08-25 10:05:10 -04:00
hns_dsaf_ppe.c	net: hns: fix ethtool_get_strings overflow in hns driver	2017-05-02 15:08:21 -04:00
hns_dsaf_ppe.h	net: hns: separate debug dsaf device from service dsaf device	2016-04-26 01:09:17 -04:00
hns_dsaf_rcb.c	net: hns: fix ethtool_get_strings overflow in hns driver	2017-05-02 15:08:21 -04:00
hns_dsaf_rcb.h	net: hns: support deferred probe when can not obtain irq	2017-04-30 22:39:24 -04:00
hns_dsaf_reg.h	net: hns: Avoid Hip06 chip TX packet line bug	2017-04-03 14:48:43 -07:00
hns_dsaf_xgmac.c	net: hns: fix ethtool_get_strings overflow in hns driver	2017-05-02 15:08:21 -04:00
hns_dsaf_xgmac.h	net: hns: fix to intimate the link-status change by adding LF/RF method	2016-11-10 11:45:37 -05:00
hns_enet.c	net: hns: Fix a skb used after free bug	2017-07-08 11:05:21 +01:00
hns_enet.h	net: hns: Fix a skb used after free bug	2017-07-08 11:05:21 +01:00
hns_ethtool.c	net: hns: Use phy_driver to setup Phy loopback	2017-07-03 02:01:15 -07:00