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* rds: use little-endian bitopsAkinobu Mita2011-03-241-3/+3
| | | | | | | | | | | | As a preparation for removing ext2 non-atomic bit operations from asm/bitops.h. This converts ext2 non-atomic bit operations to little-endian bit operations. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Andy Grover <andy.grover@oracle.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rds: stop including asm-generic/bitops/le.h directlyAkinobu Mita2011-03-241-5/+4
| | | | | | | | | | | | | | | | | | | | | asm-generic/bitops/le.h is only intended to be included directly from asm-generic/bitops/ext2-non-atomic.h or asm-generic/bitops/minix-le.h which implements generic ext2 or minix bit operations. This stops including asm-generic/bitops/le.h directly and use ext2 non-atomic bit operations instead. It seems odd to use ext2_*_bit() on rds, but it will replaced with __{set,clear,test}_bit_le() after introducing little endian bit operations for all architectures. This indirect step is necessary to maintain bisectability for some architectures which have their own little-endian bit operations. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Andy Grover <andy.grover@oracle.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kthread: use kthread_create_on_node()Eric Dumazet2011-03-231-1/+4
| | | | | | | | | | | | | | | | | | ksoftirqd, kworker, migration, and pktgend kthreads can be created with kthread_create_on_node(), to get proper NUMA affinities for their stack and task_struct. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Reviewed-by: Andi Kleen <ak@linux.intel.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Tejun Heo <tj@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2011-03-237-44/+64
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: [net/9p]: Introduce basic flow-control for VirtIO transport. 9p: use the updated offset given by generic_write_checks [net/9p] Don't re-pin pages on retrying virtqueue_add_buf(). [net/9p] Set the condition just before waking up. [net/9p] unconditional wake_up to proc waiting for space on VirtIO ring fs/9p: Add v9fs_dentry2v9ses fs/9p: Attach writeback_fid on first open with WR flag fs/9p: Open writeback fid in O_SYNC mode fs/9p: Use truncate_setsize instead of vmtruncate net/9p: Fix compile warning net/9p: Convert the in the 9p rpc call path to GFP_NOFS fs/9p: Fix race in initializing writeback fid
| * [net/9p]: Introduce basic flow-control for VirtIO transport.Venkateswararao Jujjuri (JV)2011-03-221-1/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent zerocopy work in the 9P VirtIO transport maps and pins user buffers into kernel memory for the server to work on them. Since the user process can initiate this kind of pinning with a simple read/write call, thousands of IO threads initiated by the user process can hog the system resources and could result into denial of service. This patch introduces flow control to avoid that extreme scenario. The ceiling limit to avoid denial of service attacks is set to relatively high (nr_free_pagecache_pages()/4) so that it won't interfere with regular usage, but can step in extreme cases to limit the total system hang. Since we don't have a global structure to accommodate this variable, I choose the virtio_chan as the home for this. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Reviewed-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * [net/9p] Don't re-pin pages on retrying virtqueue_add_buf().Venkateswararao Jujjuri (JV)2011-03-221-2/+2
| | | | | | | | | | Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * [net/9p] Set the condition just before waking up.Venkateswararao Jujjuri (JV)2011-03-221-22/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Given that the sprious wake-ups are common, we need to move the condition setting right next to the wake_up(). After setting the condition to req->status = REQ_STATUS_RCVD, sprious wakeups may cause the virtqueue back on the free list for someone else to use. This may result in kernel panic while relasing the pinned pages in p9_release_req_pages(). Also rearranged the while loop in req_done() for better redability. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * [net/9p] unconditional wake_up to proc waiting for space on VirtIO ringVenkateswararao Jujjuri (JV)2011-03-221-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Process may wait to get space on VirtIO ring to send a transaction to VirtFS server. Current code just does a conditional wake_up() which means only one process will be woken up even if multiple processes are waiting. This fix makes the wake_up unconditional. Hence we won't have any processes waiting for-ever. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * net/9p: Fix compile warningAneesh Kumar K.V2011-03-221-5/+5
| | | | | | | | | | | | Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * net/9p: Convert the in the 9p rpc call path to GFP_NOFSAneesh Kumar K.V2011-03-225-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this we can cause reclaim allocation in writepage. [ 3433.448430] ================================= [ 3433.449117] [ INFO: inconsistent lock state ] [ 3433.449117] 2.6.38-rc5+ #84 [ 3433.449117] --------------------------------- [ 3433.449117] inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-R} usage. [ 3433.449117] kswapd0/505 [HC0[0]:SC0[0]:HE1:SE1] takes: [ 3433.449117] (iprune_sem){+++++-}, at: [<ffffffff810ebbab>] shrink_icache_memory+0x45/0x2b1 [ 3433.449117] {RECLAIM_FS-ON-W} state was registered at: [ 3433.449117] [<ffffffff8107fe5f>] mark_held_locks+0x52/0x70 [ 3433.449117] [<ffffffff8107ff02>] lockdep_trace_alloc+0x85/0x9f [ 3433.449117] [<ffffffff810d353d>] slab_pre_alloc_hook+0x18/0x3c [ 3433.449117] [<ffffffff810d3fd5>] kmem_cache_alloc+0x23/0xa2 [ 3433.449117] [<ffffffff8127be77>] idr_pre_get+0x2d/0x6f [ 3433.449117] [<ffffffff815434eb>] p9_idpool_get+0x30/0xae [ 3433.449117] [<ffffffff81540123>] p9_client_rpc+0xd7/0x9b0 [ 3433.449117] [<ffffffff815427b0>] p9_client_clunk+0x88/0xdb [ 3433.449117] [<ffffffff811d56e5>] v9fs_evict_inode+0x3c/0x48 [ 3433.449117] [<ffffffff810eb511>] evict+0x1f/0x87 [ 3433.449117] [<ffffffff810eb5c0>] dispose_list+0x47/0xe3 [ 3433.449117] [<ffffffff810eb8da>] evict_inodes+0x138/0x14f [ 3433.449117] [<ffffffff810d90e2>] generic_shutdown_super+0x57/0xe8 [ 3433.449117] [<ffffffff810d91e8>] kill_anon_super+0x11/0x50 [ 3433.449117] [<ffffffff811d4951>] v9fs_kill_super+0x49/0xab [ 3433.449117] [<ffffffff810d926e>] deactivate_locked_super+0x21/0x46 [ 3433.449117] [<ffffffff810d9e84>] deactivate_super+0x40/0x44 [ 3433.449117] [<ffffffff810ef848>] mntput_no_expire+0x100/0x109 [ 3433.449117] [<ffffffff810f0aeb>] sys_umount+0x2f1/0x31c [ 3433.449117] [<ffffffff8102c87b>] system_call_fastpath+0x16/0x1b [ 3433.449117] irq event stamp: 192941 [ 3433.449117] hardirqs last enabled at (192941): [<ffffffff81568dcf>] _raw_spin_unlock_irq+0x2b/0x30 [ 3433.449117] hardirqs last disabled at (192940): [<ffffffff810b5f97>] shrink_inactive_list+0x290/0x2f5 [ 3433.449117] softirqs last enabled at (188470): [<ffffffff8105fd65>] __do_softirq+0x133/0x152 [ 3433.449117] softirqs last disabled at (188455): [<ffffffff8102d7cc>] call_softirq+0x1c/0x28 [ 3433.449117] [ 3433.449117] other info that might help us debug this: [ 3433.449117] 1 lock held by kswapd0/505: [ 3433.449117] #0: (shrinker_rwsem){++++..}, at: [<ffffffff810b52e2>] shrink_slab+0x38/0x15f [ 3433.449117] [ 3433.449117] stack backtrace: [ 3433.449117] Pid: 505, comm: kswapd0 Not tainted 2.6.38-rc5+ #84 [ 3433.449117] Call Trace: [ 3433.449117] [<ffffffff8107fbce>] ? valid_state+0x17e/0x191 [ 3433.449117] [<ffffffff81036896>] ? save_stack_trace+0x28/0x45 [ 3433.449117] [<ffffffff81080426>] ? check_usage_forwards+0x0/0x87 [ 3433.449117] [<ffffffff8107fcf4>] ? mark_lock+0x113/0x22c [ 3433.449117] [<ffffffff8108105f>] ? __lock_acquire+0x37a/0xcf7 [ 3433.449117] [<ffffffff8107fc0e>] ? mark_lock+0x2d/0x22c [ 3433.449117] [<ffffffff81081077>] ? __lock_acquire+0x392/0xcf7 [ 3433.449117] [<ffffffff810b14d2>] ? determine_dirtyable_memory+0x15/0x28 [ 3433.449117] [<ffffffff81081a33>] ? lock_acquire+0x57/0x6d [ 3433.449117] [<ffffffff810ebbab>] ? shrink_icache_memory+0x45/0x2b1 [ 3433.449117] [<ffffffff81567d85>] ? down_read+0x47/0x5c [ 3433.449117] [<ffffffff810ebbab>] ? shrink_icache_memory+0x45/0x2b1 [ 3433.449117] [<ffffffff810ebbab>] ? shrink_icache_memory+0x45/0x2b1 [ 3433.449117] [<ffffffff810b5385>] ? shrink_slab+0xdb/0x15f [ 3433.449117] [<ffffffff810b69bc>] ? kswapd+0x574/0x96a [ 3433.449117] [<ffffffff810b6448>] ? kswapd+0x0/0x96a [ 3433.449117] [<ffffffff810714e2>] ? kthread+0x7d/0x85 [ 3433.449117] [<ffffffff8102d6d4>] ? kernel_thread_helper+0x4/0x10 [ 3433.449117] [<ffffffff81569200>] ? restore_args+0x0/0x30 [ 3433.449117] [<ffffffff81071465>] ? kthread+0x0/0x85 [ 3433.449117] [<ffffffff8102d6d0>] ? kernel_thread_helper+0x0/0x10 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds2011-03-233-138/+491
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: use watch/notify for changes in rbd header libceph: add lingering request and watch/notify event framework rbd: update email address in Documentation ceph: rename dentry_release -> d_release, fix comment ceph: add request to the tail of unsafe write list ceph: remove request from unsafe list if it is canceled/timed out ceph: move readahead default to fs/ceph from libceph ceph: add ino32 mount option ceph: update common header files ceph: remove debugfs debug cruft libceph: fix osd request queuing on osdmap updates ceph: preserve I_COMPLETE across rename libceph: Fix base64-decoding when input ends in newline.
| * libceph: add lingering request and watch/notify event frameworkYehuda Sadeh2011-03-222-12/+374
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Lingering requests are requests that are sent to the OSD normally but tracked also after we get a successful request. This keeps the OSD connection open and resends the original request if the object moves to another OSD. The OSD can then send notification messages back to us if another client initiates a notify. This framework will be used by RBD so that the client gets notification when a snapshot is created by another node or tool. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * libceph: fix osd request queuing on osdmap updatesSage Weil2011-03-211-133/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we send a request to osd A, and the request's pg remaps to osd B and then back to A in quick succession, we need to resend the request to A. The old code was only calling kick_requests after processing all incremental maps in a message, so it was very possible to not resend a request that needed to be resent. This would make the osd eventually time out (at least with the current default of osd timeouts enabled). The correct approach is to scan requests on every map incremental. This patch refactors the kick code in a few ways: - all requests are either on req_lru (in flight), req_unsent (ready to send), or req_notarget (currently map to no up osd) - mapping always done by map_request (previous map_osds) - if the mapping changes, we requeue. requests are resent only after all map incrementals are processed. - some osd reset code is moved out of kick_requests into a separate function - the "kick this osd" functionality is moved to kick_osd_requests, as it is unrelated to scanning for request->pg->osd mapping changes Signed-off-by: Sage Weil <sage@newdream.net>
| * libceph: Fix base64-decoding when input ends in newline.Tommi Virtanen2011-03-151-1/+3
| | | | | | | | | | | | | | | | | | | | | | It used to return -EINVAL because it thought the end was not aligned to 4 bytes. Clean up superfluous src < end test in if, the while itself guarantees that. Signed-off-by: Tommi Virtanen <tommi.virtanen@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* | IPVS: Use global mutex in ip_vs_app.cSimon Horman2011-03-221-13/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As part of the work to make IPVS network namespace aware __ip_vs_app_mutex was replaced by a per-namespace lock, ipvs->app_mutex. ipvs->app_key is also supplied for debugging purposes. Unfortunately this implementation results in ipvs->app_key residing in non-static storage which at the very least causes a lockdep warning. This patch takes the rather heavy-handed approach of reinstating __ip_vs_app_mutex which will cover access to the ipvs->list_head of all network namespaces. [ 12.610000] IPVS: Creating netns size=2456 id=0 [ 12.630000] IPVS: Registered protocols (TCP, UDP, SCTP, AH, ESP) [ 12.640000] BUG: key ffff880003bbf1a0 not in .data! [ 12.640000] ------------[ cut here ]------------ [ 12.640000] WARNING: at kernel/lockdep.c:2701 lockdep_init_map+0x37b/0x570() [ 12.640000] Hardware name: Bochs [ 12.640000] Pid: 1, comm: swapper Tainted: G W 2.6.38-kexec-06330-g69b7efe-dirty #122 [ 12.650000] Call Trace: [ 12.650000] [<ffffffff8102e685>] warn_slowpath_common+0x75/0xb0 [ 12.650000] [<ffffffff8102e6d5>] warn_slowpath_null+0x15/0x20 [ 12.650000] [<ffffffff8105967b>] lockdep_init_map+0x37b/0x570 [ 12.650000] [<ffffffff8105829d>] ? trace_hardirqs_on+0xd/0x10 [ 12.650000] [<ffffffff81055ad8>] debug_mutex_init+0x38/0x50 [ 12.650000] [<ffffffff8104bc4c>] __mutex_init+0x5c/0x70 [ 12.650000] [<ffffffff81685ee7>] __ip_vs_app_init+0x64/0x86 [ 12.660000] [<ffffffff81685a3b>] ? ip_vs_init+0x0/0xff [ 12.660000] [<ffffffff811b1c33>] T.620+0x43/0x170 [ 12.660000] [<ffffffff811b1e9a>] ? register_pernet_subsys+0x1a/0x40 [ 12.660000] [<ffffffff81685a3b>] ? ip_vs_init+0x0/0xff [ 12.660000] [<ffffffff81685a3b>] ? ip_vs_init+0x0/0xff [ 12.660000] [<ffffffff811b1db7>] register_pernet_operations+0x57/0xb0 [ 12.660000] [<ffffffff81685a3b>] ? ip_vs_init+0x0/0xff [ 12.670000] [<ffffffff811b1ea9>] register_pernet_subsys+0x29/0x40 [ 12.670000] [<ffffffff81685f19>] ip_vs_app_init+0x10/0x12 [ 12.670000] [<ffffffff81685a87>] ip_vs_init+0x4c/0xff [ 12.670000] [<ffffffff8166562c>] do_one_initcall+0x7a/0x12e [ 12.670000] [<ffffffff8166583e>] kernel_init+0x13e/0x1c2 [ 12.670000] [<ffffffff8128c134>] kernel_thread_helper+0x4/0x10 [ 12.670000] [<ffffffff8128ad40>] ? restore_args+0x0/0x30 [ 12.680000] [<ffffffff81665700>] ? kernel_init+0x0/0x1c2 [ 12.680000] [<ffffffff8128c130>] ? kernel_thread_helper+0x0/0x1global0 Signed-off-by: Simon Horman <horms@verge.net.au> Cc: Ingo Molnar <mingo@elte.hu> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Julian Anastasov <ja@ssi.bg> Cc: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipvs: fix a typo in __ip_vs_control_init()Eric Dumazet2011-03-221-1/+1
| | | | | | | | | | | | | | | | | | Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Simon Horman <horms@verge.net.au> Cc: Julian Anastasov <ja@ssi.bg> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net ipv6: Fix duplicate /proc/sys/net/ipv6/neigh directory entries.Eric W. Biederman2011-03-221-7/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When I was fixing issues with unregisgtering tables under /proc/sys/net/ipv6/neigh by adding a mount point it appears I missed a critical ordering issue, in the ipv6 initialization. I had not realized that ipv6_sysctl_register is called at the very end of the ipv6 initialization and in particular after we call neigh_sysctl_register from ndisc_init. "neigh" needs to be initialized in ipv6_static_sysctl_register which is the first ipv6 table to initialized, and definitely before ndisc_init. This removes the weirdness of duplicate tables while still providing a "neigh" mount point which prevents races in sysctl unregistering. This was initially reported at https://bugzilla.kernel.org/show_bug.cgi?id=31232 Reported-by: sunkan@zappa.cx Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: fix incorrect spelling in drop monitor protocolNeil Horman2011-03-221-1/+1
| | | | | | | | | | | | | | It was pointed out to me recently that my spelling could be better :) Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net/appletalk: fix atalk_release use after freeArnd Bergmann2011-03-221-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | The BKL removal in appletalk introduced a use-after-free problem, where atalk_destroy_socket frees a sock, but we still release the socket lock on it. An easy fix is to take an extra reference on the sock and sock_put it when returning from atalk_release. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipx: fix ipx_release()Eric Dumazet2011-03-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Commit b0d0d915d1d1a0 (remove the BKL) added a regression, because sock_put() can free memory while we are going to use it later. Fix is to delay sock_put() _after_ release_sock(). Reported-by: Ingo Molnar <mingo@elte.hu> Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | l2tp: fix possible oops on l2tp_eth module unloadJames Chapman2011-03-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A struct used in the l2tp_eth driver for registering network namespace ops was incorrectly marked as __net_initdata, leading to oops when module unloaded. BUG: unable to handle kernel paging request at ffffffffa00ec098 IP: [<ffffffff8123dbd8>] ops_exit_list+0x7/0x4b PGD 142d067 PUD 1431063 PMD 195da8067 PTE 0 Oops: 0000 [#1] SMP last sysfs file: /sys/module/l2tp_eth/refcnt Call Trace: [<ffffffff8123dc94>] ? unregister_pernet_operations+0x32/0x93 [<ffffffff8123dd20>] ? unregister_pernet_device+0x2b/0x38 [<ffffffff81068b6e>] ? sys_delete_module+0x1b8/0x222 [<ffffffff810c7300>] ? do_munmap+0x254/0x318 [<ffffffff812c64e5>] ? page_fault+0x25/0x30 [<ffffffff812c6952>] ? system_call_fastpath+0x16/0x1b Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | xfrm: Fix initialize repl field of struct xfrm_stateWei Yongjun2011-03-222-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 'xfrm: Move IPsec replay detection functions to a separate file' (9fdc4883d92d20842c5acea77a4a21bb1574b495) introduce repl field to struct xfrm_state, and only initialize it under SA's netlink create path, the other path, such as pf_key, ipcomp/ipcomp6 etc, the repl field remaining uninitialize. So if the SA is created by pf_key, any input packet with SA's encryption algorithm will cause panic. int xfrm_input() { ... x->repl->advance(x, seq); ... } This patch fixed it by introduce new function __xfrm_init_state(). Pid: 0, comm: swapper Not tainted 2.6.38-next+ #14 Bochs Bochs EIP: 0060:[<c078e5d5>] EFLAGS: 00010206 CPU: 0 EIP is at xfrm_input+0x31c/0x4cc EAX: dd839c00 EBX: 00000084 ECX: 00000000 EDX: 01000000 ESI: dd839c00 EDI: de3a0780 EBP: dec1de88 ESP: dec1de64 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process swapper (pid: 0, ti=dec1c000 task=c09c0f20 task.ti=c0992000) Stack: 00000000 00000000 00000002 c0ba27c0 00100000 01000000 de3a0798 c0ba27c0 00000033 dec1de98 c0786848 00000000 de3a0780 dec1dea4 c0786868 00000000 dec1debc c074ee56 e1da6b8c de3a0780 c074ed44 de3a07a8 dec1decc c074ef32 Call Trace: [<c0786848>] xfrm4_rcv_encap+0x22/0x27 [<c0786868>] xfrm4_rcv+0x1b/0x1d [<c074ee56>] ip_local_deliver_finish+0x112/0x1b1 [<c074ed44>] ? ip_local_deliver_finish+0x0/0x1b1 [<c074ef32>] NF_HOOK.clone.1+0x3d/0x44 [<c074ef77>] ip_local_deliver+0x3e/0x44 [<c074ed44>] ? ip_local_deliver_finish+0x0/0x1b1 [<c074ec03>] ip_rcv_finish+0x30a/0x332 [<c074e8f9>] ? ip_rcv_finish+0x0/0x332 [<c074ef32>] NF_HOOK.clone.1+0x3d/0x44 [<c074f188>] ip_rcv+0x20b/0x247 [<c074e8f9>] ? ip_rcv_finish+0x0/0x332 [<c072797d>] __netif_receive_skb+0x373/0x399 [<c0727bc1>] netif_receive_skb+0x4b/0x51 [<e0817e2a>] cp_rx_poll+0x210/0x2c4 [8139cp] [<c072818f>] net_rx_action+0x9a/0x17d [<c0445b5c>] __do_softirq+0xa1/0x149 [<c0445abb>] ? __do_softirq+0x0/0x149 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | netfilter: ipt_CLUSTERIP: fix buffer overflowVasiliy Kulikov2011-03-201-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 'buffer' string is copied from userspace. It is not checked whether it is zero terminated. This may lead to overflow inside of simple_strtoul(). Changli Gao suggested to copy not more than user supplied 'size' bytes. It was introduced before the git epoch. Files "ipt_CLUSTERIP/*" are root writable only by default, however, on some setups permissions might be relaxed to e.g. network admin user. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
* | netfilter: xtables: fix reentrancyEric Dumazet2011-03-202-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit f3c5c1bfd4308 (make ip_tables reentrant) introduced a race in handling the stackptr restore, at the end of ipt_do_table() We should do it before the call to xt_info_rdunlock_bh(), or we allow cpu preemption and another cpu overwrites stackptr of original one. A second fix is to change the underflow test to check the origptr value instead of 0 to detect underflow, or else we allow a jump from different hooks. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
* | netfilter: ipset: fix checking the type revision at create commandJozsef Kadlecsik2011-03-201-5/+17
| | | | | | | | | | | | | | | | | | The revision of the set type was not checked at the create command: if the userspace sent a valid set type but with not supported revision number, it'd create a loop. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
* | netfilter: ipset: fix address ranges at hash:*port* typesJozsef Kadlecsik2011-03-204-94/+38
| | | | | | | | | | | | | | | | | | The hash:*port* types with IPv4 silently ignored when address ranges with non TCP/UDP were added/deleted from the set and used the first address from the range only. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
* | bridge: Reset IPCB when entering IP stack on NF_FORWARDHerbert Xu2011-03-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Whenever we enter the IP stack proper from bridge netfilter we need to ensure that the skb is in a form the IP stack expects it to be in. The entry point on NF_FORWARD did not meet the requirements of the IP stack, therefore leading to potential crashes/panics. This patch fixes the problem. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | vlan: should take into account needed_headroomEric Dumazet2011-03-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit c95b819ad7 (gre: Use needed_headroom) made gre use needed_headroom instead of hard_header_len This uncover a bug in vlan code. We should make sure vlan devices take into account their real_dev->needed_headroom or we risk a crash in ipgre_header(), because we dont have enough room to push IP header in skb. Reported-by: Diddi Oscarsson <diddi@diddi.se> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ethtool: Compat handling for struct ethtool_rxnfcBen Hutchings2011-03-181-7/+107
| | | | | | | | | | | | | | | | | | | | | | This structure was accidentally defined such that its layout can differ between 32-bit and 64-bit processes. Add compat structure definitions and an ioctl wrapper function. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Alexander Duyck <alexander.h.duyck@intel.com> Cc: stable@kernel.org [2.6.30+] Signed-off-by: David S. Miller <davem@davemloft.net>
* | ethtool: __ethtool_set_sg: check for function pointer before using itRoger Luethi2011-03-181-0/+3
| | | | | | | | | | | | | | | | | | | | __ethtool_set_sg does not check if dev->ethtool_ops->set_sg is defined which can result in a NULL pointer dereference when ethtool is used to change SG settings for drivers without SG support. Signed-off-by: Roger Luethi <rl@hellgate.ch> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | econet: 4 byte infoleak to the networkVasiliy Kulikov2011-03-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | struct aunhdr has 4 padding bytes between 'pad' and 'handle' fields on x86_64. These bytes are not initialized in the variable 'ah' before sending 'ah' to the network. This leads to 4 bytes kernel stack infoleak. This bug was introduced before the git epoch. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: Phil Blundell <philb@gnu.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'for-linus' of ↵Linus Torvalds2011-03-183-4/+4
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (47 commits) doc: CONFIG_UNEVICTABLE_LRU doesn't exist anymore Update cpuset info & webiste for cgroups dcdbas: force SMI to happen when expected arch/arm/Kconfig: remove one to many l's in the word. asm-generic/user.h: Fix spelling in comment drm: fix printk typo 'sracth' Remove one to many n's in a word Documentation/filesystems/romfs.txt: fixing link to genromfs drivers:scsi Change printk typo initate -> initiate serial, pch uart: Remove duplicate inclusion of linux/pci.h header fs/eventpoll.c: fix spelling mm: Fix out-of-date comments which refers non-existent functions drm: Fix printk typo 'failled' coh901318.c: Change initate to initiate. mbox-db5500.c Change initate to initiate. edac: correct i82975x error-info reported edac: correct i82975x mci initialisation edac: correct commented info fs: update comments to point correct document target: remove duplicate include of target/target_core_device.h from drivers/target/target_core_hba.c ... Trivial conflict in fs/eventpoll.c (spelling vs addition)
| * | kbuild, mtd, net: a few comment typo fixes and rewordingGilles Espinasse2011-02-171-2/+2
| | | | | | | | | | | | | | | Signed-off-by: Gilles Espinasse <g.esp@free.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | Merge branch 'master' into for-nextJiri Kosina2011-02-1585-416/+725
| |\ \
| * | | Kill off warning: ‘inline’ is not at beginning of declarationJesper Juhl2011-01-192-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a bunch of warning: ‘inline’ is not at beginning of declaration messages when building a 'make allyesconfig' kernel with -Wextra. These warnings are trivial to kill, yet rather annoying when building with -Wextra. The more we can cut down on pointless crap like this the better (IMHO). A previous patch to do this for a 'allnoconfig' build has already been merged. This just takes the cleanup a little further. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2011-03-182-16/+196
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (48 commits) HID: add support for Logitech Driving Force Pro wheel HID: hid-ortek: remove spurious reference HID: add support for Ortek PKB-1700 HID: roccat-koneplus: vorrect mode of sysfs attr 'sensor' HID: hid-ntrig: init settle and mode check HID: merge hid-egalax into hid-multitouch HID: hid-multitouch: Send events per slot if CONTACTCOUNT is missing HID: ntrig remove if and drop an indent HID: ACRUX - activate the device immediately after binding HID: ntrig: apply NO_INIT_REPORTS quirk HID: hid-magicmouse: Correct touch orientation direction HID: ntrig don't dereference unclaimed hidinput HID: Do not create input devices for feature reports HID: bt hidp: send Output reports using SET_REPORT on the Control channel HID: hid-sony.c: Fix sending Output reports to the Sixaxis HID: add support for Keytouch IEC 60945 HID: Add HID Report Descriptor to sysfs HID: add IRTOUCH infrared USB to hid_have_special_driver HID: kernel oops in out_cleanup in function hidinput_connect HID: Add teletext/color keys - gyration remote - EU version (GYAR3101CKDE) ...
| | \ \ \
| | \ \ \
| *-. \ \ \ Merge branches 'dragonrise', 'hidraw-feature', 'multitouch', 'ntrig', ↵Jiri Kosina2011-03-172-16/+196
| |\ \ \ \ \ | | |_|/ / / | |/| | | | | | | | | | 'roccat', 'upstream' and 'upstream-fixes' into for-linus
| | | * | | HID: bt hidp: send Output reports using SET_REPORT on the Control channelAntonio Ospite2011-02-221-1/+1
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current implementation of hidp_output_raw_report() relies only on the Control channel even for Output reports, and the BT HID specification [1] does not mention using the DATA message for Output reports on the Control channel (see section 7.9.1 and also Figure 11: SET_ Flow Chart), so let us just use SET_REPORT. This also fixes sending Output reports to some devices (like Sony Sixaxis) which are not able to handle DATA messages on the Control channel. Ideally hidp_output_raw_report() could be improved to use this scheme: Feature Report -- SET_REPORT on the Control channel Output Report -- DATA on the Interrupt channel for more efficiency, but as said above, right now only the Control channel is used. [1] http://www.bluetooth.com/Specification%20Documents/HID_SPEC_V10.pdf Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | | HID: bt: Add support for hidraw HIDIOCGFEATURE and HIDIOCSFEATUREAlan Ott2011-02-112-4/+117
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support or getting and setting feature reports for bluetooth HID devices from HIDRAW. Signed-off-by: Alan Ott <alan@signal11.us> Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | | HID: bt: Wait for ACK on Sent ReportsAlan Ott2011-02-112-3/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wait for an ACK from the device before returning from hidp_output_raw_report(). This way, failures can be returned to the user application. Also, it prevents ACK/NAK packets from an output packet from being confused with ACK/NAK packets from an input request packet. Signed-off-by: Alan Ott <alan@signal11.us> Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | | HID: bt: Move hid_add_device() call to after hidp_session() has started.Alan Ott2011-02-112-8/+23
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the call to hid_add_device() (which calls a device's probe() function) to after the kernel_thread() call which starts the hidp_session() thread. This ensures the Bluetooth receive socket is fully running by the time a device's probe() function is called. This way, a device can communicate (send and receive) with the Bluetooth device from its probe() function. Signed-off-by: Alan Ott <alan@signal11.us> Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | Merge branch 'nfs-for-2.6.39' of ↵Linus Torvalds2011-03-188-96/+120
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.39' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (54 commits) RPC: killing RPC tasks races fixed xprt: remove redundant check SUNRPC: Convert struct rpc_xprt to use atomic_t counters SUNRPC: Ensure we always run the tk_callback before tk_action sunrpc: fix printk format warning xprt: remove redundant null check nfs: BKL is no longer needed, so remove the include NFS: Fix a warning in fs/nfs/idmap.c Cleanup: Factor out some cut-and-paste code. cleanup: save 60 lines/100 bytes by combining two mostly duplicate functions. NFS: account direct-io into task io accounting gss:krb5 only include enctype numbers in gm_upcall_enctypes RPCRDMA: Fix FRMR registration/invalidate handling. RPCRDMA: Fix to XDR page base interpretation in marshalling logic. NFSv4: Send unmapped uid/gids to the server when using auth_sys NFSv4: Propagate the error NFS4ERR_BADOWNER to nfs4_do_setattr NFSv4: cleanup idmapper functions to take an nfs_server argument NFSv4: Send unmapped uid/gids to the server if the idmapper fails NFSv4: If the server sends us a numeric uid/gid then accept it NFSv4.1: reject zero layout with zeroed stripe unit ...
| * | | | RPC: killing RPC tasks races fixedStanislav Kinsbursky2011-03-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RPC task RPC_TASK_QUEUED bit is set must be checked before trying to wake up task rpc_killall_tasks() because task->tk_waitqueue can not be set (equal to NULL). Also, as Trond Myklebust mentioned, such approach (instead of checking tk_waitqueue to NULL) allows us to "optimise away the call to rpc_wake_up_queued_task() altogether for those tasks that aren't queued". Here is an example of dereferencing of tk_waitqueue equal to NULL: CPU 0 CPU 1 CPU 2 -------------------- --------------------- -------------------------- nfs4_run_open_task rpc_run_task rpc_execute rpc_set_active rpc_make_runnable (waiting) rpc_async_schedule nfs4_open_prepare nfs_wait_on_sequence nfs_umount_begin rpc_killall_tasks rpc_wake_up_task rpc_wake_up_queued_task spin_lock(tk_waitqueue == NULL) BUG() rpc_sleep_on spin_lock(&q->lock) __rpc_sleep_on task->tk_waitqueue = q Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org> Cc: stable@kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | | xprt: remove redundant checkj223yang@asset.uwaterloo.ca2011-03-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | remove redundant check. Signed-off-by: Jinqiu Yang <crindy646@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | | SUNRPC: Convert struct rpc_xprt to use atomic_t countersTrond Myklebust2011-03-171-8/+8
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | | SUNRPC: Ensure we always run the tk_callback before tk_actionTrond Myklebust2011-03-171-8/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a race in which the task->tk_callback() puts the rpc_task to sleep, setting a new callback. Under certain circumstances, the current code may end up executing the task->tk_action before it gets round to the callback. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
| * | | | sunrpc: fix printk format warningRandy Dunlap2011-03-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix printk format build warning: net/sunrpc/xprtrdma/verbs.c:1463: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'dma_addr_t' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | | xprt: remove redundant null checkj223yang@asset.uwaterloo.ca2011-03-161-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'req' is dereferenced before checked for NULL. The patch simply removes the check. Signed-off-by: Jinqiu Yang<crindy646@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | | gss:krb5 only include enctype numbers in gm_upcall_enctypesKevin Coffman2011-03-112-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the value in gm_upcall_enctypes just the enctype values. This allows the values to be used more easily elsewhere. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | | RPCRDMA: Fix FRMR registration/invalidate handling.Tom Tucker2011-03-112-8/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the rpc_memreg_strategy is 5, FRMR are used to map RPC data. This mode uses an FRMR to map the RPC data, then invalidates (i.e. unregisers) the data in xprt_rdma_free. These FRMR are used across connections on the same mount, i.e. if the connection goes away on an idle timeout and reconnects later, the FRMR are not destroyed and recreated. This creates a problem for transport errors because the WR that invalidate an FRMR may be flushed (i.e. fail) leaving the FRMR valid. When the FRMR is later used to map an RPC it will fail, tearing down the transport and starting over. Over time, more and more of the FRMR pool end up in the wrong state resulting in seemingly random disconnects. This fix keeps track of the FRMR state explicitly by setting it's state based on the successful completion of a reg/inv WR. If the FRMR is ever used and found to be in the wrong state, an invalidate WR is prepended, re-syncing the FRMR state and avoiding the connection loss. Signed-off-by: Tom Tucker <tom@ogc.us> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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