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2009-11-30Merge branch 'security' of ↵Linus Torvalds4-18/+13
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 * 'security' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6: mac80211: fix spurious delBA handling mac80211: fix two remote exploits
2009-11-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds12-62/+56
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) b44: Fix wedge when using netconsole. wan: cosa: drop chan->wsem on error path ep93xx-eth: check for zero MAC address on probe, not on device open NET: smc91x: Fix irq flags smsc9420: prevent BUG() if ethtool is called with interface down r8169: restore mac addr in rtl8169_remove_one and rtl_shutdown ipv4: additional update of dev_net(dev) to struct *net in ip_fragment.c, NULL ptr OOPS e100: Use pci pool to work around GFP_ATOMIC order 5 memory allocation failure sctp: on T3_RTX retransmit all the in-flight chunks pktgen: Fix netdevice unregister macvlan: fix gso_max_size setting rfkill: fix miscdev ops ath9k: set ps_default as false hso: fix soft-lockup hso: fix debug routines pktgen: Fix device name compares stmmac: do not fail when the timer cannot be used. stmmac: fixed a compilation error when use the external timer netfilter: xt_limit: fix invalid return code in limit_mt_check() Au1x00: fix crash when trying register_netdev() ...
2009-11-30mac80211: fix spurious delBA handlingJohannes Berg3-13/+12
Lennert Buytenhek noticed that delBA handling in mac80211 was broken and has remotely triggerable problems, some of which are due to some code shuffling I did that ended up changing the order in which things were done -- this was commit d75636ef9c1af224f1097941879d5a8db7cd04e5 Author: Johannes Berg <johannes@sipsolutions.net> Date: Tue Feb 10 21:25:53 2009 +0100 mac80211: RX aggregation: clean up stop session and other parts were already present in the original commit d92684e66091c0f0101819619b315b4bb8b5bcc5 Author: Ron Rindjunsky <ron.rindjunsky@intel.com> Date: Mon Jan 28 14:07:22 2008 +0200 mac80211: A-MPDU Tx add delBA from recipient support The first problem is that I moved a BUG_ON before various checks -- thereby making it possible to hit. As the comment indicates, the BUG_ON can be removed since the ampdu_action callback must already exist when the state is != IDLE. The second problem isn't easily exploitable but there's a race condition due to unconditionally setting the state to OPERATIONAL when a delBA frame is received, even when no aggregation session was ever initiated. All the drivers accept stopping the session even then, but that opens a race window where crashes could happen before the driver accepts it. Right now, a WARN_ON may happen with non-HT drivers, while the race opens only for HT drivers. For this case, there are two things necessary to fix it: 1) don't process spurious delBA frames, and be more careful about the session state; don't drop the lock 2) HT drivers need to be prepared to handle a session stop even before the session was really started -- this is true for all drivers (that support aggregation) but iwlwifi which can be fixed easily. The other HT drivers (ath9k and ar9170) are behaving properly already. Reported-by: Lennert Buytenhek <buytenh@marvell.com> Cc: stable@kernel.org Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-30mac80211: fix two remote exploitsJohannes Berg2-5/+1
Lennert Buytenhek noticed a remotely triggerable problem in mac80211, which is due to some code shuffling I did that ended up changing the order in which things were done -- this was in commit d75636ef9c1af224f1097941879d5a8db7cd04e5 Author: Johannes Berg <johannes@sipsolutions.net> Date: Tue Feb 10 21:25:53 2009 +0100 mac80211: RX aggregation: clean up stop session The problem is that the BUG_ON moved before the various checks, and as such can be triggered. As the comment indicates, the BUG_ON can be removed since the ampdu_action callback must already exist when the state is OPERATIONAL. A similar code path leads to a WARN_ON in ieee80211_stop_tx_ba_session, which can also be removed. Cc: stable@kernel.org [2.6.29+] Cc: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-29ipv4: additional update of dev_net(dev) to struct *net in ip_fragment.c, ↵David Ford1-1/+1
NULL ptr OOPS ipv4 ip_frag_reasm(), fully replace 'dev_net(dev)' with 'net', defined previously patched into 2.6.29. Between 2.6.28.10 and 2.6.29, net/ipv4/ip_fragment.c was patched, changing from dev_net(dev) to container_of(...). Unfortunately the goto section (out_fail) on oversized packets inside ip_frag_reasm() didn't get touched up as well. Oversized IP packets cause a NULL pointer dereference and immediate hang. I discovered this running openvasd and my previous email on this is titled: NULL pointer dereference at 2.6.32-rc8:net/ipv4/ip_fragment.c:566 Signed-off-by: David Ford <david@blue-labs.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29sctp: on T3_RTX retransmit all the in-flight chunksAndrei Pelinescu-Onciul3-14/+2
When retransmitting due to T3 timeout, retransmit all the in-flight chunks for the corresponding transport/path, including chunks sent less then 1 rto ago. This is the correct behaviour according to rfc4960 section 6.3.3 E3 and "Note: Any DATA chunks that were sent to the address for which the T3-rtx timer expired but did not fit in one MTU (rule E3 above) should be marked for retransmission and sent as soon as cwnd allows (normally, when a SACK arrives). ". This fixes problems when more then one path is present and the T3 retransmission of the first chunk that timeouts stops the T3 timer for the initial active path, leaving all the other in-flight chunks waiting forever or until a new chunk is transmitted on the same path and timeouts (and this will happen only if the cwnd allows sending new chunks, but since cwnd was dropped to MTU by the timeout => it will wait until the first heartbeat). Example: 10 packets in flight, sent at 0.1 s intervals on the primary path. The primary path is down and the first packet timeouts. The first packet is retransmitted on another path, the T3 timer for the primary path is stopped and cwnd is set to MTU. All the other 9 in-flight packets will not be retransmitted (unless more new packets are sent on the primary path which depend on cwnd allowing it, and even in this case the 9 packets will be retransmitted only after a new packet timeouts which even in the best case would be more then RTO). This commit reverts d0ce92910bc04e107b2f3f2048f07e94f570035d and also removes the now unused transport->last_rto, introduced in b6157d8e03e1e780660a328f7183bcbfa4a93a19. p.s The problem is not only when multiple paths are there. It can happen in a single homed environment. If the application stops sending data, it possible to have a hung association. Signed-off-by: Andrei Pelinescu-Onciul <andrei@iptel.org> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-24pktgen: Fix netdevice unregisterEric Dumazet1-5/+11
When multi queue compatable names are used by pktgen (eg eth0@0), we currently cannot unload a NIC driver if one of its device is currently in use. Allow pktgen_find_dev() to find pktgen devices by their suffix (netdev name) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-23Merge branch 'master' of ↵David S. Miller4-20/+26
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2009-11-23rfkill: fix miscdev opsJohannes Berg1-0/+1
The /dev/rfkill ops don't refer to the module, so it is possible to unload the module while file descriptors are open. Fix this oversight. Reported-by: Maxim Levitsky <maximlevitsky@gmail.com> Cc: stable@kernel.org Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23pktgen: Fix device name comparesEric Dumazet1-8/+10
Commit e6fce5b916cd7f7f7 (pktgen: multiqueue etc.) tried to relax the pktgen restriction of one device per kernel thread, adding a '@' tag to device names. Problem is we dont perform check on full pktgen device name. This allows adding many time same 'device' to pktgen thread pgset "add_device eth0@0" one session later : pgset "add_device eth0@0" (This doesnt find previous device) This consumes ~1.5 MBytes of vmalloc memory per round and also triggers this warning : [ 673.186380] proc_dir_entry 'pktgen/eth0@0' already registered [ 673.186383] Modules linked in: pktgen ixgbe ehci_hcd psmouse mdio mousedev evdev [last unloaded: pktgen] [ 673.186406] Pid: 6219, comm: bash Tainted: G W 2.6.32-rc7-03302-g41cec6f-dirty #16 [ 673.186410] Call Trace: [ 673.186417] [<ffffffff8104a29b>] warn_slowpath_common+0x7b/0xc0 [ 673.186422] [<ffffffff8104a341>] warn_slowpath_fmt+0x41/0x50 [ 673.186426] [<ffffffff8114e789>] proc_register+0x109/0x210 [ 673.186433] [<ffffffff8100bf2e>] ? apic_timer_interrupt+0xe/0x20 [ 673.186438] [<ffffffff8114e905>] proc_create_data+0x75/0xd0 [ 673.186444] [<ffffffffa006ad38>] pktgen_thread_write+0x568/0x640 [pktgen] [ 673.186449] [<ffffffffa006a7d0>] ? pktgen_thread_write+0x0/0x640 [pktgen] [ 673.186453] [<ffffffff81149144>] proc_reg_write+0x84/0xc0 [ 673.186458] [<ffffffff810f5a58>] vfs_write+0xb8/0x180 [ 673.186463] [<ffffffff810f5c11>] sys_write+0x51/0x90 [ 673.186468] [<ffffffff8100b51b>] system_call_fastpath+0x16/0x1b [ 673.186470] ---[ end trace ccbb991b0a8d994d ]--- Solution to this problem is to use a odevname field (includes @ tag and suffix), instead of using netdevice name. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-23Merge branch 'master' of ↵David S. Miller1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
2009-11-23netfilter: xt_limit: fix invalid return code in limit_mt_check()Patrick McHardy1-1/+1
Commit acc738fe (netfilter: xtables: avoid pointer to self) introduced an invalid return value in limit_mt_check(). Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-11-19Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds1-10/+8
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Address buffer overrun in rpc_uaddr2sockaddr() NFSv4: Fix a cache validation bug which causes getcwd() to return ENOENT
2009-11-19netfilter: nf_log: fix sleeping function called from invalid context in ↵Patrick McHardy1-13/+5
seq_show() [ 171.925285] BUG: sleeping function called from invalid context at kernel/mutex.c:280 [ 171.925296] in_atomic(): 1, irqs_disabled(): 0, pid: 671, name: grep [ 171.925306] 2 locks held by grep/671: [ 171.925312] #0: (&p->lock){+.+.+.}, at: [<c10b8acd>] seq_read+0x25/0x36c [ 171.925340] #1: (rcu_read_lock){.+.+..}, at: [<c1391dac>] seq_start+0x0/0x44 [ 171.925372] Pid: 671, comm: grep Not tainted 2.6.31.6-4-netbook #3 [ 171.925380] Call Trace: [ 171.925398] [<c105104e>] ? __debug_show_held_locks+0x1e/0x20 [ 171.925414] [<c10264ac>] __might_sleep+0xfb/0x102 [ 171.925430] [<c1461521>] mutex_lock_nested+0x1c/0x2ad [ 171.925444] [<c1391c9e>] seq_show+0x74/0x127 [ 171.925456] [<c10b8c5c>] seq_read+0x1b4/0x36c [ 171.925469] [<c10b8aa8>] ? seq_read+0x0/0x36c [ 171.925483] [<c10d5c8e>] proc_reg_read+0x60/0x74 [ 171.925496] [<c10d5c2e>] ? proc_reg_read+0x0/0x74 [ 171.925510] [<c10a4468>] vfs_read+0x87/0x110 [ 171.925523] [<c10a458a>] sys_read+0x3b/0x60 [ 171.925538] [<c1002a49>] syscall_call+0x7/0xb Fix it by replacing RCU with nf_log_mutex. Reported-by: "Yin, Kangkai" <kangkai.yin@intel.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-19netfilter: xt_osf: fix xt_osf_remove_callback() return valuePatrick McHardy1-1/+1
Return a negative error value. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-19mac80211: fix resumeJohannes Berg2-10/+17
When mac80211 resumes, it currently first sets suspended to false so the driver can start doing things and we can receive frames. However, if we actually receive frames then it can end up starting some work which adds timers and then later runs into a BUG_ON in the timer code because it tries add_timer() on a pending timer. Fix this by keeping track of the resuming process by introducing a new variable 'resuming' which gets set to true early on instead of setting 'suspended' to false, and allow queueing work but not receiving frames while resuming. Reported-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds11-45/+75
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) cxgb3: fix premature page unmap ibm_newemac: Fix EMACx_TRTR[TRT] bit shifts vlan: Fix register_vlan_dev() error path gro: Fix illegal merging of trailer trash sungem: Fix Serdes detection. net: fix mdio section mismatch warning ppp: fix BUG on non-linear SKB (multilink receive) ixgbe: Fixing EEH handler to handle more than one error net: Fix the rollback test in dev_change_name() Revert "isdn: isdn_ppp: Use SKB list facilities instead of home-grown implementation." TI Davinci EMAC : Fix Console Hang when bringing the interface down smsc911x: Fix Console Hang when bringing the interface down. mISDN: fix error return in HFCmulti_init() forcedeth: mac address fix r6040: fix version printing Bluetooth: Fix regression with L2CAP configuration in Basic Mode Bluetooth: Select Basic Mode as default for SOCK_SEQPACKET Bluetooth: Set general bonding security for ACL by default r8169: Fix receive buffer length when MTU is between 1515 and 1536 can: add the missing netlink get_xstats_size callback ...
2009-11-18mac80211: fix addba timer (again...)Johannes Berg1-10/+8
commit 2171abc58644e09dbba546d91366b12743115396 Author: Johannes Berg <johannes@sipsolutions.net> Date: Thu Oct 29 08:34:00 2009 +0100 mac80211: fix addba timer left a problem in there, even if the timer was never started it could be deleted and then added. Linus pointed out that del_timer_sync() isn't actually needed if we make the timer able to deal with no longer being needed when it gets queued _while_ we're in the locked section that also deletes it. For that the timer function only needs to check the HT_ADDBA_RECEIVED_MSK bit as well as the HT_ADDBA_REQUESTED_MSK bit, only if the former is clear should it do anything. Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-17vlan: Fix register_vlan_dev() error pathEric Dumazet1-2/+5
In case register_netdevice() returns an error, and a new vlan_group was allocated and inserted in vlan_group_hash[] we call vlan_group_free() without deleting group from hash table. Future lookups can give infinite loops or crashes. We must delete the vlan_group using RCU safe procedure. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17gro: Fix illegal merging of trailer trashHerbert Xu1-1/+2
When we've merged skb's with page frags, and subsequently receive a trailer skb (< MSS) that is not completely non-linear (this can occur on Intel NICs if the packet size falls below the threshold), GRO ends up producing an illegal GSO skb with a frag_list. This is harmless unless the skb is then forwarded through an interface that requires software GSO, whereupon the GSO code will BUG. This patch detects this case in GRO and avoids merging the trailer skb. Reported-by: Mark Wagner <mwagner@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-16net: Fix the rollback test in dev_change_name()Eric Dumazet1-5/+6
net: Fix the rollback test in dev_change_name() In dev_change_name() an err variable is used for storing the original call_netdevice_notifiers() errno (negative) and testing for a rollback error later, but the test for non-zero is wrong, because the err might have positive value as well - from dev_alloc_name(). It means the rollback for a netdevice with a number > 0 will never happen. (The err test is reordered btw. to make it more readable.) Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15Merge branch 'master' of ↵David S. Miller2-4/+10
git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6
2009-11-16Bluetooth: Fix regression with L2CAP configuration in Basic ModeGustavo F. Padovan1-3/+8
Basic Mode is the default mode of operation of a L2CAP entity. In this case the RFC (Retransmission and Flow Control) configuration option should not be used at all. Normally remote L2CAP implementation should just ignore this option, but it can cause various side effects with other Bluetooth stacks that are not capable of handling unknown options. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-11-16Bluetooth: Select Basic Mode as default for SOCK_SEQPACKETGustavo F. Padovan1-1/+1
The default mode for SOCK_SEQPACKET is Basic Mode. So when no mode has been specified, Basic Mode shall be used. This is important for current application to keep working as expected and not cause a regression. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-11-16Bluetooth: Set general bonding security for ACL by defaultAndrei Emeltchenko1-0/+1
This patch fixes double pairing issues with Secure Simple Paring support. It was observed that when pairing with SSP enabled, that the confirmation will be asked twice. http://www.spinics.net/lists/linux-bluetooth/msg02473.html This also causes bug when initiating SSP connection from Windows Vista. The reason is because bluetoothd does not store link keys since HCIGETAUTHINFO returns 0. Setting default to general bonding fixes these issues. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-11-13ipmr: missing dev_put() on error path in vif_add()Dan Carpenter1-1/+3
The other error paths in front of this one have a dev_put() but this one got missed. Found by smatch static checker. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Wang Chen <ellre923@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13sctp: Set socket source address when additing first transportVlad Yasevich1-1/+2
Recent commits sctp: Get rid of an extra routing lookup when adding a transport and sctp: Set source addresses on the association before adding transports changed when routes are added to the sctp transports. As such, we didn't set the socket source address correctly when adding the first transport. The first transport is always the primary/active one, so when adding it, set the socket source address. This was causing regression failures in SCTP tests. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13sctp: Fix regression introduced by new sctp_connectx apiVlad Yasevich1-5/+13
A new (unrealeased to the user) sctp_connectx api c6ba68a26645dbc5029a9faa5687ebe6fcfc53e4 sctp: support non-blocking version of the new sctp_connectx() API introduced a regression cought by the user regression test suite. In particular, the API requires the user library to re-allocate the buffer and could potentially trigger a SIGFAULT. This change corrects that regression by passing the original address buffer to the kernel unmodified, but still allows for a returned association id. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13sctp: Set source addresses on the association before adding transportsVlad Yasevich3-19/+22
Recent commit 8da645e101a8c20c6073efda3c7cc74eec01b87f sctp: Get rid of an extra routing lookup when adding a transport introduced a regression in the connection setup. The behavior was different between IPv4 and IPv6. IPv4 case ended up working because the route lookup routing returned a NULL route, which triggered another route lookup later in the output patch that succeeded. In the IPv6 case, a valid route was returned for first call, but we could not find a valid source address at the time since the source addresses were not set on the association yet. Thus resulted in a hung connection. The solution is to set the source addresses on the association prior to adding peers. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-14SUNRPC: Address buffer overrun in rpc_uaddr2sockaddr()Chuck Lever1-10/+8
The size of buf[] must account for the string termination needed for the first strict_strtoul() call. Introduced in commit a02d6926. Fábio Olivé Leite points out that strict_strtoul() requires _either_ '\n\0' _or_ '\0' termination, so use the simpler '\0' here instead. See http://bugzilla.kernel.org/show_bug.cgi?id=14546 . Reported-by: argp@census-labs.com Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Fábio Olivé Leite <fleite@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-11-13tcp: provide more information on the tcp receive_queue bugsIlpo Järvinen1-7/+12
The addition of rcv_nxt allows to discern whether the skb was out of place or tp->copied. Also catch fancy combination of flags if necessary (sadly we might miss the actual causer flags as it might have already returned). Btw, we perhaps would want to forward copied_seq in somewhere or otherwise we might have some nice loop with WARN stuff within but where to do that safely I don't know at this stage until more is known (but it is not made significantly worse by this patch). Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13netfilter: nf_log: fix sleeping function called from invalid context in ↵Wu Fengguang1-13/+5
seq_show() [ 171.925285] BUG: sleeping function called from invalid context at kernel/mutex.c:280 [ 171.925296] in_atomic(): 1, irqs_disabled(): 0, pid: 671, name: grep [ 171.925306] 2 locks held by grep/671: [ 171.925312] #0: (&p->lock){+.+.+.}, at: [<c10b8acd>] seq_read+0x25/0x36c [ 171.925340] #1: (rcu_read_lock){.+.+..}, at: [<c1391dac>] seq_start+0x0/0x44 [ 171.925372] Pid: 671, comm: grep Not tainted 2.6.31.6-4-netbook #3 [ 171.925380] Call Trace: [ 171.925398] [<c105104e>] ? __debug_show_held_locks+0x1e/0x20 [ 171.925414] [<c10264ac>] __might_sleep+0xfb/0x102 [ 171.925430] [<c1461521>] mutex_lock_nested+0x1c/0x2ad [ 171.925444] [<c1391c9e>] seq_show+0x74/0x127 [ 171.925456] [<c10b8c5c>] seq_read+0x1b4/0x36c [ 171.925469] [<c10b8aa8>] ? seq_read+0x0/0x36c [ 171.925483] [<c10d5c8e>] proc_reg_read+0x60/0x74 [ 171.925496] [<c10d5c2e>] ? proc_reg_read+0x0/0x74 [ 171.925510] [<c10a4468>] vfs_read+0x87/0x110 [ 171.925523] [<c10a458a>] sys_read+0x3b/0x60 [ 171.925538] [<c1002a49>] syscall_call+0x7/0xb Fix it by replacing RCU with nf_log_mutex. Reported-by: "Yin, Kangkai" <kangkai.yin@intel.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-11-13netfilter: xt_osf: fix xt_osf_remove_callback() return valueRoel Kluin1-1/+1
Return a negative error value. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-11-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds10-92/+107
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits) net/fsl_pq_mdio: add module license GPL can: fix WARN_ON dump in net/core/rtnetlink.c:rtmsg_ifinfo() can: should not use __dev_get_by_index() without locks hisax: remove bad udelay call to fix build error on ARM ipip: Fix handling of DF packets when pmtudisc is OFF qlge: Set PCIe reset type for EEH to fundamental. qlge: Fix early exit from mbox cmd complete wait. ixgbe: fix traffic hangs on Tx with ioatdma loaded ixgbe: Fix checking TFCS register for TXOFF status when DCB is enabled ixgbe: Fix gso_max_size for 82599 when DCB is enabled macsonic: fix crash on PowerBook 520 NET: cassini, fix lock imbalance ems_usb: Fix byte order issues on big endian machines be2net: Bug fix to send config commands to hardware after netdev_register be2net: fix to set proper flow control on resume netfilter: xt_connlimit: fix regression caused by zero family value rt2x00: Don't queue ieee80211 work after USB removal Revert "ipw2200: fix oops on missing firmware" decnet: netdevice refcount leak netfilter: nf_nat: fix NAT issue in 2.6.30.4+ ...
2009-11-08can: should not use __dev_get_by_index() without locksEric Dumazet1-7/+12
bcm_proc_getifname() is called with RTNL and dev_base_lock not held. It calls __dev_get_by_index() without locks, and this is illegal (might crash) Close the race by holding dev_base_lock and copying dev->name in the protected section. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-06ipip: Fix handling of DF packets when pmtudisc is OFFHerbert Xu1-15/+17
RFC 2003 requires the outer header to have DF set if DF is set on the inner header, even when PMTU discovery is off for the tunnel. Our implementation does exactly that. For this to work properly the IPIP gateway also needs to engate in PMTU when the inner DF bit is set. As otherwise the original host would not be able to carry out its PMTU successfully since part of the path is only visible to the gateway. Unfortunately when the tunnel PMTU discovery setting is off, we do not collect the necessary soft state, resulting in blackholes when the original host tries to perform PMTU discovery. This problem is not reproducible on the IPIP gateway itself as the inner packet usually has skb->local_df set. This is not correctly cleared (an unrelated bug) when the packet passes through the tunnel, which allows fragmentation to occur. For hosts behind the IPIP gateway it is readily visible with a simple ping. This patch fixes the problem by performing PMTU discovery for all packets with the inner DF bit set, regardless of the PMTU discovery setting on the tunnel itself. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-06netfilter: xt_connlimit: fix regression caused by zero family valueJan Engelhardt1-6/+4
Commit v2.6.28-rc1~717^2~109^2~2 was slightly incomplete; not all instances of par->match->family were changed to par->family. References: http://bugzilla.netfilter.org/show_bug.cgi?id=610 Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-06decnet: netdevice refcount leakEric Dumazet1-4/+3
While working on device refcount stuff, I found a device refcount leak through DECNET. This nasty bug can be used to hold refcounts on any !DECNET netdevice. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-06netfilter: nf_nat: fix NAT issue in 2.6.30.4+Jozsef Kadlecsik4-49/+60
Vitezslav Samel discovered that since 2.6.30.4+ active FTP can not work over NAT. The "cause" of the problem was a fix of unacknowledged data detection with NAT (commit a3a9f79e361e864f0e9d75ebe2a0cb43d17c4272). However, actually, that fix uncovered a long standing bug in TCP conntrack: when NAT was enabled, we simply updated the max of the right edge of the segments we have seen (td_end), by the offset NAT produced with changing IP/port in the data. However, we did not update the other parameter (td_maxend) which is affected by the NAT offset. Thus that could drift away from the correct value and thus resulted breaking active FTP. The patch below fixes the issue by *not* updating the conntrack parameters from NAT, but instead taking into account the NAT offsets in conntrack in a consistent way. (Updating from NAT would be more harder and expensive because it'd need to re-calculate parameters we already calculated in conntrack.) Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-05rose: device refcount leakEric Dumazet1-10/+6
While hunting dev_put() for net-next-2.6, I found a device refcount leak in ROSE, ioctl(SIOCADDRT) error path. Fix is to not touch device refcount, as we hold RTNL Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-05bridge: prevent bridging wrong deviceStephen Hemminger1-1/+5
The bridge code assumes ethernet addressing, so be more strict in the what is allowed. This showed up when GRE had a bug and was not using correct address format. Add some more comments for increased clarity. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds12-44/+65
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits) mac80211: check interface is down before type change cfg80211: fix NULL ptr deref libertas if_usb: Fix crash on 64-bit machines mac80211: fix reason code output endianness mac80211: fix addba timer ath9k: fix misplaced semicolon on rate control b43: Fix DMA TX bounce buffer copying mac80211: fix BSS leak rt73usb.c : more ids ipw2200: fix oops on missing firmware gre: Fix dev_addr clobbering for gretap sky2: set carrier off in probe net: fix sk_forward_alloc corruption pcnet_cs: add cis of PreMax PE-200 ethernet pcmcia card r8169: Fix card drop incoming VLAN tagged MTU byte large jumbo frames ibmtr: possible Read buffer overflow? net: Fix RPF to work with policy routing net: fix kmemcheck annotations e1000e: rework disable K1 at 1000Mbps for 82577/82578 e1000e: config PHY via software after resets ...
2009-11-02Merge branch 'master' of ↵David S. Miller5-15/+25
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2009-11-02mac80211: check interface is down before type changeJohannes Berg1-3/+3
For some strange reason the netif_running() check ended up after the actual type change instead of before, potentially causing all kinds of problems if the interface is up while changing the type; one of the problems manifests itself as a warning: WARNING: at net/mac80211/iface.c:651 ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]() Hardware name: Aspire one Pid: 2596, comm: wpa_supplicant Tainted: G W 2.6.31-10-generic #32-Ubuntu Call Trace: [] warn_slowpath_common+0x6d/0xa0 [] warn_slowpath_null+0x15/0x20 [] ieee80211_teardown_sdata+0xda/0x1a0 [mac80211] [] ieee80211_if_change_type+0x4a/0xc0 [mac80211] [] ieee80211_change_iface+0x61/0xa0 [mac80211] [] cfg80211_wext_siwmode+0xc7/0x120 [cfg80211] [] ioctl_standard_call+0x58/0xf0 (http://www.kerneloops.org/searchweek.php?search=ieee80211_teardown_sdata) Cc: Arjan van de Ven <arjan@infradead.org> Cc: stable@kernel.org Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02cfg80211: fix NULL ptr derefJohannes Berg1-2/+5
commit 211a4d12abf86fe0df4cd68fc6327cbb58f56f81 Author: Johannes Berg <johannes@sipsolutions.net> Date: Tue Oct 20 15:08:53 2009 +0900 cfg80211: sme: deauthenticate on assoc failure introduced a potential NULL pointer dereference that some people have been hitting for some reason -- the params.bssid pointer is not guaranteed to be non-NULL for what seems to be a race between various ways of reaching the same thing. While I'm trying to analyse the problem more let's first fix the crash. I think the real fix may be to avoid doing _anything_ if it ended up being NULL, but right now I'm not sure yet. I think http://bugzilla.kernel.org/show_bug.cgi?id=14342 might also be this issue. Reported-by: Parag Warudkar <parag.lkml@gmail.com> Tested-by: Parag Warudkar <parag.lkml@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-029p: fix readdir corner casesEric Van Hensbergen1-3/+2
The patch below also addresses a couple of other corner cases in readdir seen with a large (e.g. 64k) msize. I'm not sure what people think of my co-opting of fid->aux here. I'd be happy to rework if there's a better way. When the size of the user supplied buffer passed to readdir is smaller than the data returned in one go by the 9P read request, v9fs_dir_readdir() currently discards extra data so that, on the next call, a 9P read request will be issued with offset < previous offset + bytes returned, which voilates the constraint described in paragraph 3 of read(5) description. This patch preseves the leftover data in fid->aux for use in the next call. Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2009-10-30mac80211: fix reason code output endiannessJohannes Berg1-1/+1
When HT debugging is enabled and we receive a DelBA frame we print out the reason code in the wrong byte order. Fix that so we don't get weird values printed. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-30mac80211: fix addba timerJohannes Berg1-7/+12
The addba timer function acquires the sta spinlock, but at the same time we try to del_timer_sync() it under the spinlock which can produce deadlocks. To fix this, always del_timer_sync() the timer in ieee80211_process_addba_resp() and add it again after checking the conditions, if necessary. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-30mac80211: fix BSS leakJohannes Berg1-2/+4
The IBSS code leaks a BSS struct after telling cfg80211 about a given BSS by passing a frame. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-30gre: Fix dev_addr clobbering for gretapHerbert Xu1-12/+16
Nathan Neulinger noticed that gretap devices get their MAC address from the local IP address, which results in invalid MAC addresses half of the time. This is because gretap is still using the tunnel netdev ops rather than the correct tap netdev ops struct. This patch also fixes changelink to not clobber the MAC address for the gretap case. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Tested-by: Nathan Neulinger <nneul@mst.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
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