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Alexey Dobriyan 891e6a9312 [ROSE]: Fix rose.ko oops on unload 
Commit a3d384029a aka
"[AX.25]: Fix unchecked rose_add_loopback_neigh uses"
transformed rose_loopback_neigh var into statically allocated one.
However, on unload it will be kfree's which can't work.

Steps to reproduce:

	modprobe rose
	rmmod rose

BUG: unable to handle kernel NULL pointer dereference at virtual address 00000008
 printing eip:
c014c664
*pde = 00000000
Oops: 0000 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in: rose ax25 fan ufs loop usbhid rtc snd_intel8x0 snd_ac97_codec ehci_hcd ac97_bus uhci_hcd thermal usbcore button processor evdev sr_mod cdrom
CPU:    0
EIP:    0060:[<c014c664>]    Not tainted VLI
EFLAGS: 00210086   (2.6.23-rc9 #3)
EIP is at kfree+0x48/0xa1
eax: 00000556   ebx: c1734aa0   ecx: f6a5e000   edx: f7082000
esi: 00000000   edi: f9a55d20   ebp: 00200287   esp: f6a5ef28
ds: 007b   es: 007b   fs: 0000  gs: 0033  ss: 0068
Process rmmod (pid: 1823, ti=f6a5e000 task=f7082000 task.ti=f6a5e000)
Stack: f9a55d20 f9a5200c 00000000 00000000 00000000 f6a5e000 f9a5200c f9a55a00 
       00000000 bf818cf0 f9a51f3f f9a55a00 00000000 c0132c60 65736f72 00000000 
       f69f9630 f69f9528 c014244a f6a4e900 00200246 f7082000 c01025e6 00000000 
Call Trace:
 [<f9a5200c>] rose_rt_free+0x1d/0x49 [rose]
 [<f9a5200c>] rose_rt_free+0x1d/0x49 [rose]
 [<f9a51f3f>] rose_exit+0x4c/0xd5 [rose]
 [<c0132c60>] sys_delete_module+0x15e/0x186
 [<c014244a>] remove_vma+0x40/0x45
 [<c01025e6>] sysenter_past_esp+0x8f/0x99
 [<c012bacf>] trace_hardirqs_on+0x118/0x13b
 [<c01025b6>] sysenter_past_esp+0x5f/0x99
 =======================
Code: 05 03 1d 80 db 5b c0 8b 03 25 00 40 02 00 3d 00 40 02 00 75 03 8b 5b 0c 8b 73 10 8b 44 24 18 89 44 24 04 9c 5d fa e8 77 df fd ff <8b> 56 08 89 f8 e8 84 f4 fd ff e8 bd 32 06 00 3b 5c 86 60 75 0f 
EIP: [<c014c664>] kfree+0x48/0xa1 SS:ESP 0068:f6a5ef28

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-07 23:44:17 -07:00
..
9p 9p: Reorganization of 9p file system code 2007-07-14 15:13:40 -05:00
bluetooth [BLUETOOTH] l2cap: endianness annotations 2007-07-31 02:28:07 -07:00
irda [IrDA]: Netlink layer. 2007-07-10 22:16:43 -07:00
iucv [AF_IUCV]: Add lock when updating accept_q 2007-07-14 19:04:25 -07:00
netfilter [NETFILTER]: nf_nat: add symbolic dependency on IPv4 conntrack 2007-08-07 18:12:01 -07:00
sctp fix sctp_del_bind_addr() last argument type 2007-09-26 09:22:04 -07:00
tc_act [PKT_SCHED]: Kill pkt_act.h inlining. 2006-09-22 14:55:10 -07:00
tipc [TIPC]: Optimize stream send routine to avoid fragmentation 2007-07-10 22:06:12 -07:00
act_api.h [NET_SCHED]: Kill CONFIG_NET_CLS_POLICE 2007-07-15 00:03:05 -07:00
addrconf.h [IPV6] MIP6: Loadable module support for MIPv6. 2007-07-10 22:15:42 -07:00
af_rxrpc.h [AF_RXRPC]: Add an interface to the AF_RXRPC module for the AFS filesystem to use 2007-04-26 15:50:17 -07:00
af_unix.h [AF_UNIX]: Make code static. 2007-07-31 02:28:27 -07:00
ah.h [IPSEC]: Use HMAC template and hash interface 2006-09-21 11:46:18 +10:00
arp.h [IPV6]: Assorted trivial endianness annotations. 2006-12-02 21:22:50 -08:00
atmclip.h [ATM]: Annotations. 2006-12-02 21:22:55 -08:00
ax25.h [SK_BUFF]: Introduce skb_reset_mac_header(skb) 2007-04-25 22:24:32 -07:00
ax88796.h AX88796 network driver 2007-07-10 12:41:08 -04:00
cfg80211.h [PATCH] cfg80211: Radiotap parser 2007-07-12 16:07:24 -04:00
checksum.h [NET]: Make mangling a checksum (0 -> 0xffff on the wire) explicit. 2006-12-02 21:23:39 -08:00
cipso_ipv4.h [NetLabel]: consolidate the struct socket/sock handling to just struct sock 2007-06-08 13:33:09 -07:00
compat.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
datalink.h [NET]: Kill skb->real_dev 2005-08-29 15:32:25 -07:00
dn.h [DECNET]: Another unnecessary net/tcp.h inclusion in net/dn.h 2007-07-10 23:02:12 -07:00
dn_dev.h [DECnet]: Endian annotation and fixes for DECnet. 2006-03-20 22:42:39 -08:00
dn_fib.h [DECNet]: Use rtnl registration interface 2007-04-25 22:27:12 -07:00
dn_neigh.h [DECnet]: Endian annotation and fixes for DECnet. 2006-03-20 22:42:39 -08:00
dn_nsp.h [DECnet]: Endian annotation and fixes for DECnet. 2006-03-20 22:42:39 -08:00
dn_route.h [DECNet]: Use rtnl registration interface 2007-04-25 22:27:12 -07:00
dsfield.h [NET]: IP header modifier helpers annotations. 2006-12-02 21:23:40 -08:00
dst.h [IPV4]: The scheduled removal of multipath cached routing support. 2007-07-10 22:05:57 -07:00
esp.h [NET]: Move generic skbuff stuff from XFRM code to generic code 2007-04-25 22:28:33 -07:00
fib_rules.h [NETLINK]: Mark netlink policies const 2007-06-07 13:40:10 -07:00
flow.h [IPV6] MIP6: Kill unnecessary ifdefs. 2007-07-10 22:15:41 -07:00
gen_stats.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
genetlink.h [GENETLINK]: Dynamic multicast groups. 2007-07-18 15:47:52 -07:00
icmp.h [IPV4]: icmp_send() annotation 2006-09-28 18:01:06 -07:00
ieee80211.h [PATCH] ieee80211: add ieee80211_channel_to_freq 2007-05-08 11:51:59 -04:00
ieee80211_crypt.h [PATCH] Update my email address from jkmaline@cc.hut.fi to j@w1.fi 2007-04-28 11:01:01 -04:00
ieee80211_radiotap.h [PATCH] Remove comment about IEEE80211_RADIOTAP_FCS 2007-04-28 11:01:03 -04:00
ieee80211softmac.h WorkStruct: make allyesconfig 2006-11-22 14:57:56 +00:00
ieee80211softmac_wx.h [PATCH] softmac: add SIOCSIWMLME 2006-04-24 16:15:58 -04:00
if_inet6.h [IPV6]: Per-interface statistics support. 2006-12-02 21:22:08 -08:00
inet6_connection_sock.h [TCP]: Restore SKB socket owner setting in tcp_transmit_skb(). 2007-01-26 01:04:55 -08:00
inet6_hashtables.h [INET]: Use jhash + random secret for ehash. 2007-04-25 22:28:06 -07:00
inet_common.h [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
inet_connection_sock.h [TCP]: Restore SKB socket owner setting in tcp_transmit_skb(). 2007-01-26 01:04:55 -08:00
inet_ecn.h [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
inet_hashtables.h [NET]: change layout of ehash table 2007-02-08 14:16:46 -08:00
inet_sock.h [INET]: Use jhash + random secret for ehash. 2007-04-25 22:28:06 -07:00
inet_timewait_sock.h [INET_SOCK]: make net/ipv4/inet_timewait_sock.c:__inet_twsk_kill() static 2007-07-14 19:00:59 -07:00
inetpeer.h [IPV4] inet_peer: Group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS 2006-10-20 00:28:35 -07:00
ip.h [TCP]: Honour sk_bound_dev_if in tcp_v4_send_ack 2007-06-07 13:38:51 -07:00
ip6_checksum.h [IPV6]: Dumb typo in generic csum_ipv6_magic() 2006-12-22 11:12:07 -08:00
ip6_fib.h [IPv6]: Use rtnl registration interface 2007-04-25 22:27:13 -07:00
ip6_route.h [IPv6]: Use rtnl registration interface 2007-04-25 22:27:13 -07:00
ip6_tunnel.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ip_fib.h [IPV4]: The scheduled removal of multipath cached routing support. 2007-07-10 22:05:57 -07:00
ip_vs.h [NET]: ipvs checksum annotations. 2006-12-02 21:23:41 -08:00
ipcomp.h [CRYPTO] users: Use crypto_comp and crypto_has_* 2006-09-21 11:46:22 +10:00
ipconfig.h [NET]: ipconfig and nfsroot annotations 2006-12-02 21:21:09 -08:00
ipip.h [IPV6] net/ipv6/sit.c: make 2 functions static 2006-12-02 21:26:15 -08:00
ipv6.h [IPV6]: Remove circular dependency on if_inet6.h 2007-07-31 02:28:17 -07:00
ipx.h [SK_BUFF]: Introduce skb_transport_header(skb) 2007-04-25 22:25:31 -07:00
iw_handler.h [WEXT]: Clean up how wext is called. 2007-04-26 20:43:56 -07:00
lapb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc.h [LLC]: llc_mac_hdr_init const arguments 2006-03-20 22:59:36 -08:00
llc_c_ac.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_c_ev.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_c_st.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_conn.h [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
llc_if.h [LLC]: add multicast support for datagrams 2006-06-17 21:26:08 -07:00
llc_pdu.h [SK_BUFF]: Introduce skb_network_header() 2007-04-25 22:24:59 -07:00
llc_s_ac.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_s_ev.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_s_st.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_sap.h [LLC]: Fix the accept path 2005-09-22 07:57:21 -03:00
mac80211.h [PATCH] mac80211: clarify some mac80211 things 2007-07-12 16:07:26 -04:00
mip6.h [IPV6] MIP6: Loadable module support for MIPv6. 2007-07-10 22:15:42 -07:00
ndisc.h [IPV6]: Misc endianness annotations. 2006-12-02 21:22:52 -08:00
neighbour.h [NEIGH]: Use rtnl registration interface 2007-04-25 22:27:06 -07:00
netdma.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
netevent.h [NET]: Network Event Notifier Mechanism. 2006-08-02 13:38:20 -07:00
netlabel.h SELinux: restore proper NetLabel caching behavior 2007-08-02 11:52:21 -04:00
netlink.h [NETLINK]: attr: add nested compat attribute type 2007-07-10 22:15:38 -07:00
netrom.h [PATCH] mark struct file_operations const 1 2007-02-12 09:48:44 -08:00
nexthop.h [IPv4]: FIB configuration using struct fib_config 2006-09-22 14:55:04 -07:00
p8022.h [NET]: Fix sparse warnings 2005-08-29 16:01:32 -07:00
pkt_cls.h [NET_SCHED]: Kill CONFIG_NET_CLS_POLICE 2007-07-15 00:03:05 -07:00
pkt_sched.h [NET_SCHED]: act_api: qdisc internal reclassify support 2007-07-15 00:02:31 -07:00
protocol.h [INET]: Change protocol field in struct inet_protosw to u16 2006-12-02 21:30:55 -08:00
psnap.h [NET]: Kill skb->real_dev 2005-08-29 15:32:25 -07:00
raw.h Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
rawv6.h [IPV6] MIP6: Loadable module support for MIPv6. 2007-07-10 22:15:42 -07:00
red.h [NET_SCHED]: turn PSCHED_GET_TIME into inline function 2007-04-25 22:27:55 -07:00
request_sock.h [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
rose.h [ROSE]: Fix rose.ko oops on unload 2007-10-07 23:44:17 -07:00
route.h [IPV4]: Make ip_tos2prio const. 2007-07-10 22:19:04 -07:00
rtnetlink.h [RTNETLINK]: Link creation API 2007-07-10 22:14:20 -07:00
sch_generic.h [NET_SCHED]: Kill CONFIG_NET_CLS_POLICE 2007-07-15 00:03:05 -07:00
scm.h avoid OPEN_MAX in SCM_MAX_FD 2007-07-17 10:23:03 -07:00
slhc_vj.h [NET]: Remove __ARGS from include/net/slhc_vj.h 2005-07-05 15:12:04 -07:00
snmp.h [SCTP]: Extend /proc/net/sctp/snmp to provide more statistics. 2006-09-22 14:55:16 -07:00
sock.h [SOCK]: Shrink struct sock by 8 bytes on 64-bit. 2007-05-31 01:23:32 -07:00
syncppp.h [PATCH] drivers/net/wan/: possible cleanups 2005-09-14 08:36:54 -04:00
tcp.h [TCP]: Fix MD5 signature handling on big-endian. 2007-09-28 15:18:35 -07:00
tcp_ecn.h [TCP]: Sed magic converts func(sk, tp, ...) -> func(sk, ...) 2007-04-25 22:29:34 -07:00
tcp_states.h [TCP]: Move the TCPF_ enum to tcp_states.h 2006-01-03 13:10:57 -08:00
timewait_sock.h [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
transp_v6.h [NET]: Supporting UDP-Lite (RFC 3828) in Linux 2006-12-02 21:22:46 -08:00
udp.h [UDP]: Revert 2-pass hashing changes. 2007-06-07 13:40:50 -07:00
udplite.h [UDP]: Revert 2-pass hashing changes. 2007-06-07 13:40:50 -07:00
wext.h [NET]: Fix networking compilation errors 2007-04-27 15:31:24 -07:00
wireless.h [WIRELESS] cfg80211: New wireless config infrastructure. 2007-04-25 22:29:41 -07:00
x25.h [X.25]: Adds /proc/sys/net/x25/x25_forward to control forwarding. 2007-02-08 13:34:36 -08:00
x25device.h [SK_BUFF]: Introduce skb_reset_mac_header(skb) 2007-04-25 22:24:32 -07:00
xfrm.h [XFRM]: Fix crash introduced by struct dst_entry reordering 2007-07-18 01:55:52 -07:00