- 17 Nov, 2012 36 commits
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Takashi Iwai authored
commit 0914f796 upstream. When disconnect callback is called, each component should wake up sleepers and check card->shutdown flag for avoiding the endless sleep blocking the proper resource release. Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Takashi Iwai authored
commit a0830dbd upstream. For more strict protection for wild disconnections, a refcount is introduced to the card instance, and let it up/down when an object is referred via snd_lookup_*() in the open ops. The free-after-last-close check is also changed to check this refcount instead of the empty list, too. Reported-by:
Matthieu CASTET <matthieu.castet@parrot.com> Signed-off-by:
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Takashi Iwai authored
commit 888ea7d5 upstream. Similar like the previous commit, cover with chip->shutdown_rwsem and chip->shutdown checks. Reported-by:
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Takashi Iwai authored
commit 34f3c89f upstream. Replace mutex with rwsem for codec->shutdown protection so that concurrent accesses are allowed. Also add the protection to snd_usb_autosuspend() and snd_usb_autoresume(), too. Reported-by:
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Takashi Iwai authored
commit 978520b7 upstream. Close some races at disconnection of a USB audio device by adding the chip->shutdown_mutex and chip->shutdown check at appropriate places. The spots to put bandaids are: - PCM prepare, hw_params and hw_free - where the usb device is accessed for communication or get speed, in mixer.c and others; the device speed is now cached in subs->speed instead of accessing to chip->dev The accesses in PCM open and close don't need the mutex protection because these are already handled in the core PCM disconnection code. The autosuspend/autoresume codes are still uncovered by this patch because of possible mutex deadlocks. They'll be covered by the upcoming change to rwsem. Also the mixer codes are untouched, too. These will be fixed in another patch, too. Reported-by:
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Takashi Iwai authored
commit 9b0573c0 upstream. Fix races at PCM disconnection: - while a PCM device is being opened or closed - while the PCM state is being changed without lock in prepare, hw_params, hw_free ops Reported-by:
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Jean Delvare authored
commit 3300fb4f upstream. Don't assume bank 0 is selected at device probe time. This may not be the case. Force bank selection at first register access to guarantee that we read the right registers upon driver loading. Signed-off-by:
Jean Delvare <khali@linux-fr.org> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Ilija Hadzic authored
commit 0f1cb1bd upstream. If drm_setup (called at first open) fails, the whole open call has failed, so we should not keep the open_count incremented. Signed-off-by:
Ilija Hadzic <ihadzic@research.bell-labs.com> Reviewed-by:
Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Trond Myklebust authored
[Fixed upstream as part of 0b728e19, but that's a much larger patch, this is only the nfs portion backported as needed.] Fix the following Oops in 3.5.1: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 IP: [<ffffffffa03789cd>] nfs_lookup_revalidate+0x2d/0x480 [nfs] PGD 337c63067 PUD 0 Oops: 0000 [#1] SMP CPU 5 Modules linked in: nfs fscache nfsd lockd nfs_acl auth_rpcgss sunrpc af_packet binfmt_misc cpufreq_conservative cpufreq_userspace cpufreq_powersave dm_mod acpi_cpufreq mperf coretemp gpio_ich kvm_intel joydev kvm ioatdma hid_generic igb lpc_ich i7core_edac edac_core ptp serio_raw dca pcspkr i2c_i801 mfd_core sg pps_core usbhid crc32c_intel microcode button autofs4 uhci_hcd ttm drm_kms_helper drm i2c_algo_bit sysimgblt sysfillrect syscopyarea ehci_hcd usbcore usb_common scsi_dh_rdac scsi_dh_emc scsi_dh_hp_sw scsi_dh_alua scsi_dh edd fan ata_piix thermal processor thermal_sys Pid: 30431, comm: java Not tainted 3.5.1-2-default #1 Supermicro X8DTT/X8DTT RIP: 0010:[<ffffffffa03789cd>] [<ffffffffa03789cd>] nfs_lookup_revalidate+0x2d/0x480 [nfs] RSP: 0018:ffff8801b418bd38 EFLAGS: 00010292 RAX: 00000000fffffff6 RBX: ffff88032016d800 RCX: 0000000000000020 RDX: ffffffff00000000 RSI: 0000000000000000 RDI: ffff8801824a7b00 RBP: ffff8801b418bdf8 R08: 7fffff0034323030 R09: fffffffff04c03ed R10: ffff8801824a7b00 R11: 0000000000000002 R12: ffff8801824a7b00 R13: ffff8801824a7b00 R14: 0000000000000000 R15: ffff8803201725d0 FS: 00002b53a46cb700(0000) GS:ffff88033fc20000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000020a426000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process java (pid: 30431, threadinfo ffff8801b418a000, task ffff8801b5d20600) Stack: ffff8801b418be44 ffff88032016d800 ffff8801b418bdf8 0000000000000000 ffff8801824a7b00 ffff8801b418bdd7 ffff8803201725d0 ffffffff8116a9c0 ffff8801b5c38dc0 0000000000000007 ffff88032016d800 0000000000000000 Call Trace: [<ffffffff8116a9c0>] lookup_dcache+0x80/0xe0 [<ffffffff8116aa43>] __lookup_hash+0x23/0x90 [<ffffffff8116b4a5>] lookup_one_len+0xc5/0x100 [<ffffffffa03869a3>] nfs_sillyrename+0xe3/0x210 [nfs] [<ffffffff8116cadf>] vfs_unlink.part.25+0x7f/0xe0 [<ffffffff8116f22c>] do_unlinkat+0x1ac/0x1d0 [<ffffffff815717b9>] system_call_fastpath+0x16/0x1b [<00002b5348b5f527>] 0x2b5348b5f526 Code: ec 38 b8 f6 ff ff ff 4c 89 64 24 18 4c 89 74 24 28 49 89 fc 48 89 5c 24 08 48 89 6c 24 10 49 89 f6 4c 89 6c 24 20 4c 89 7c 24 30 <f6> 46 38 40 0f 85 d1 00 00 00 e8 c4 c4 df e0 48 8b 58 30 49 89 RIP [<ffffffffa03789cd>] nfs_lookup_revalidate+0x2d/0x480 [nfs] RSP <ffff8801b418bd38> CR2: 0000000000000038 ---[ end trace 845113ed191985dd ]--- This Oops affects 3.5 kernels and older, and is due to lookup_one_len() calling down to the dentry revalidation code with a NULL pointer to struct nameidata. It is fixed upstream by commit 0b728e19 (stop passing nameidata * to ->d_revalidate()) Reported-by:
Richard Ems <richard.ems@cape-horn-eng.com> Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
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NeilBrown authored
commit 8d96b106 upstream. The DNS resolver's use of the sunrpc cache involves a 'ttl' number (relative) rather that a timeout (absolute). This confused me when I wrote commit c5b29f88 "sunrpc: use seconds since boot in expiry cache" and I managed to break it. The effect is that any TTL is interpreted as 0, and nothing useful gets into the cache. This patch removes the use of get_expiry() - which really expects an expiry time - and uses get_uint() instead, treating the int correctly as a ttl. This fixes a regression that has been present since 2.6.37, causing certain NFS accesses in certain environments to incorrectly fail. Reported-by:
Chuck Lever <chuck.lever@oracle.com> Tested-by:
NeilBrown <neilb@suse.de> Signed-off-by:
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J. Bruce Fields authored
commit a007c4c3 upstream. I don't think there's a practical difference for the range of values these interfaces should see, but it would be safer to be unambiguous. Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Cc: Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
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Trond Myklebust authored
commit 2240a9e2 upstream. If we do not release the sequence id in cases where we fail to get a session slot, then we can deadlock if we hit a recovery scenario. Signed-off-by:
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Trond Myklebust authored
commit 2b1bc308 upstream. If the state recovery machinery is triggered by the call to nfs4_async_handle_error() then we can deadlock. Signed-off-by:
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Ben Hutchings authored
commit 97a54868 upstream. Since commit c7f404b4 ('vfs: new superblock methods to override /proc/*/mount{s,info}'), nfs_path() is used to generate the mounted device name reported back to userland. nfs_path() always generates a trailing slash when the given dentry is the root of an NFS mount, but userland may expect the original device name to be returned verbatim (as it used to be). Make this canonicalisation optional and change the callers accordingly. [jrnieder@gmail.com: use flag instead of bool argument] Reported-and-tested-by:
Chris Hiestand <chiestand@salk.edu> Reference: http://bugs.debian.org/669314Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
Jonathan Nieder <jrnieder@gmail.com> Signed-off-by:
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Scott Mayhew authored
commit acce94e6 upstream. In very busy v3 environment, rpc.mountd can respond to the NULL procedure but not the MNT procedure in a timely manner causing the MNT procedure to time out. The problem is the mount system call returns EIO which causes the mount to fail, instead of ETIMEDOUT, which would cause the mount to be retried. This patch sets the RPC_TASK_SOFT|RPC_TASK_TIMEOUT flags to the rpc_call_sync() call in nfs_mount() which causes ETIMEDOUT to be returned on timed out connections. Signed-off-by:
Steve Dickson <steved@redhat.com> Signed-off-by:
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Antonio Quartulli authored
commit badecb00 upstream. The 'ssid' field of the cfg80211_ibss_params is a u8 pointer and its length is likely to be less than IEEE80211_MAX_SSID_LEN most of the time. This patch fixes the ssid copy in ieee80211_ibss_join() by using the SSID length to prevent it from reading beyond the string. Signed-off-by:
Antonio Quartulli <ordex@autistici.org> [rewrapped commit message, small rewording] Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Johannes Berg authored
commit 6dbda2d0 upstream. The code to allow EAPOL frames even when the station isn't yet marked associated needs to check that the incoming frame is long enough and due to paged RX it also can't assume skb->data contains the right data, it must use skb_copy_bits(). Fix this to avoid using data that doesn't really exist. Signed-off-by:
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Johannes Berg authored
commit 9b395bc3 upstream. A number of places in the mesh code don't check that the frame data is present and in the skb header when trying to access. Add those checks and the necessary pskb_may_pull() calls. This prevents accessing data that doesn't actually exist. To do this, export ieee80211_get_mesh_hdrlen() to be able to use it in mac80211. Signed-off-by:
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Johannes Berg authored
commit 4a4f1a58 upstream. Due to pskb_may_pull() checking the skb length, all non-management frames are checked on input whether their 802.11 header is fully present. Also add that check for management frames and remove a check that is now duplicate. This prevents accessing skb data beyond the frame end. Signed-off-by:
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Dave Airlie authored
commit 3916e1d7 upstream. When buffer sharing with the i915 and using a 1680x1050 monitor, the i915 gives is a 6912 buffer for the 6720 width, the code doesn't render this properly as it uses one value to set the base address for reading from the vmap and for where to start on the device. This fixes it by calculating the values correctly for the device and for the pixmap. No idea how I haven't seen this before now. Signed-off-by:
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Egbert Eich authored
commit 83325d07 upstream. An uninitialized variable led to broken load detection. Signed-off-by:
Egbert Eich <eich@suse.de> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Javier Cardona authored
commit f7fbf70e upstream. Per IEEE Std. 802.11-2012, Sec 8.2.4.4.1, the sequence Control field is not present in control frames. We noticed this problem when processing Block Ack Requests. Signed-off-by:
Javier Cardona <javier@cozybit.com> Signed-off-by:
Javier Lopez <jlopex@cozybit.com> Signed-off-by:
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Javier Cardona authored
commit 555cb715 upstream. Doing otherwise is wrong, and may wreak havoc on the mpp tables, specially if the frame is encrypted. Reported-by:
Chaoxing Lin <Chaoxing.Lin@ultra-3eti.com> Signed-off-by:
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Johannes Berg authored
commit 9690fb16 upstream. Instead of the current whitelist which accepts duplicates only for the quiet and vendor IEs, use a blacklist of all IEs (that we currently parse) that can't be duplicated. This avoids detecting a beacon as corrupt in the future when new IEs are added that can be duplicated. Signed-off-by:
Paul Stewart <pstew@chromium.org> Signed-off-by:
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Johannes Berg authored
commit 7dd111e8 upstream. The mesh header can have address extension by a 4th or a 5th and 6th address, but never both. Drop such frames in 802.11 -> 802.3 conversion along with any frames that have the wrong extension. Reviewed-by:
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Felix Fietkau authored
commit c4a9fafc upstream. No driver initializes chan->max_antenna_gain to something sensible, and the only place where it is being used right now is inside ath9k. This leads to ath9k potentially using less tx power than it can use, which can decrease performance/range in some rare cases. Rather than going through every single driver, this patch initializes chan->orig_mag in wiphy_register(), ignoring whatever value the driver left in there. If a driver for some reason wishes to limit it independent from regulatory rulesets, it can do so internally. Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
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Steve Hodgson authored
commit ab74b3d6 upstream. This patch changes core_tmr_abort_task() to use spin_lock -> spin_unlock around se_cmd->t_state_lock while spin_lock_irqsave is held via se_sess->sess_cmd_lock. Signed-off-by:
Steve Hodgson <steve@purestorage.com> Signed-off-by:
Roland Dreier <roland@purestorage.com> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
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Roland Dreier authored
commit d5627acb upstream. The sleeping code in iscsi_target_tx_thread() is susceptible to the classic missed wakeup race: - TX thread finishes handle_immediate_queue() and handle_response_queue(), thinks both queues are empty. - Another thread adds a queue entry and does wake_up_process(), which does nothing because the TX thread is still awake. - TX thread does schedule_timeout() and sleeps forever. In practice this can kill an iSCSI connection if for example an initiator does single-threaded writes and the target misses the wakeup window when queueing an R2T; in this case the connection will be stuck until the initiator loses patience and does some task management operation (or kills the connection entirely). Fix this by converting to wait_event_interruptible(), which does not suffer from this sort of race. Signed-off-by:
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Roland Dreier authored
commit 3e03989b upstream. The expression (max_sectors * block_size) might overflow a u32 (indeed, since iblock sets max_hw_sectors to UINT_MAX, it is guaranteed to overflow and end up with a much-too-small result in many common cases). Fix this by doing an equivalent calculation that doesn't require multiplication. While we're touching this code, avoid splitting a printk format across two lines and use pr_info(...) instead of printk(KERN_INFO ...). Signed-off-by:
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Roland Dreier authored
commit 0d0f9dfb upstream. If the call to core_dev_release_virtual_lun0() fails, then nothing sets ret to anything other than 0, so even though everything is torn down and freed, target_core_init_configfs() will seem to succeed and the module will be loaded. Fix this by passing the return value on up the chain. Signed-off-by:
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Stanislaw Gruszka authored
commit bf7e1abe upstream. Some hardware has correct (!= 0xff) value of tssi_bounds[4] in the EEPROM, but step is equal to 0xff. This results on ridiculous delta calculations and completely broke TX power settings. Reported-and-tested-by:
Pavel Lucik <pavel.lucik@gmail.com> Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Acked-by:
Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
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Sven Eckelmann authored
commit 6fe7cc71 upstream. The ath9k xmit functions for AMPDUs can send frames as non-aggregate in case only one frame is currently available. The client will then answer using a normal Ack instead of a BlockAck. This acknowledgement has no TID stored and therefore the hardware is not able to provide us the corresponding TID. The TID set by the hardware in the tx status descriptor has to be seen as undefined and not as a valid TID value for normal acknowledgements. Doing otherwise results in a massive amount of retransmissions and stalls of connections. Users may experience low bandwidth and complete connection stalls in environments with transfers using multiple TIDs. This regression was introduced in b11b160d ("ath9k: validate the TID in the tx status information"). Signed-off-by:
Sven Eckelmann <sven@narfation.org> Signed-off-by:
Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Acked-by:
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Felix Fietkau authored
commit 8c6e3093 upstream. bf->bf_next is only while buffers are chained as part of an A-MPDU in the tx queue. When a tid queue is flushed (e.g. on tearing down an aggregation session), frames can be enqueued again as normal transmission, without bf_next being cleared. This can lead to the old pointer being dereferenced again later. This patch might fix crashes and "Failed to stop TX DMA!" messages. Signed-off-by:
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Rolf Eike Beer authored
commit 32ed1911 upstream. The tsc40 driver announces it supports the pressure event, but will never send one. The announcement will cause tslib to wait for such events and sending all touch events with a pressure of 0. Removing the announcement will make tslib fall back to emulating the pressure on touch events so everything works as expected. Signed-off-by:
Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Konrad Rzeszutek Wilk authored
commit 95a7d768 upstream. As Mukesh explained it, the MMUEXT_TLB_FLUSH_ALL allows the hypervisor to do a TLB flush on all active vCPUs. If instead we were using the generic one (which ends up being xen_flush_tlb) we end up making the MMUEXT_TLB_FLUSH_LOCAL hypercall. But before we make that hypercall the kernel will IPI all of the vCPUs (even those that were asleep from the hypervisor perspective). The end result is that we needlessly wake them up and do a TLB flush when we can just let the hypervisor do it correctly. This patch gives around 50% speed improvement when migrating idle guest's from one host to another. Oracle-bug: 14630170 Tested-by:
Jingjie Jiang <jingjie.jiang@oracle.com> Suggested-by:
Mukesh Rathor <mukesh.rathor@oracle.com> Signed-off-by:
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by:
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David Vrabel authored
commit a67baeb7 upstream. map->kmap_ops allocated in gntdev_alloc_map() wasn't freed by gntdev_put_map(). Add a gntdev_free_map() helper function to free everything allocated by gntdev_alloc_map(). Signed-off-by:
David Vrabel <david.vrabel@citrix.com> Signed-off-by:
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- 05 Nov, 2012 4 commits
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Greg Kroah-Hartman authored
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Greg Kroah-Hartman authored
This reverts commit baa526f4, which is commit 308b3afb upstream. To quote Colin Cross: This patch breaks Exynos5 spi on 3.4.17. The patch with the bug that this patch was supposed to address went in to 3.6 and not 3.4, so this patch causes a driver name mismatch when applied to 3.4. Cc: Colin Cross <ccross@google.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by:
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Ben Skeggs authored
This is to prevent nouveau from taking over the console on headless boards such as Tesla. Backport of upstream commit: e412e95aSigned-off-by:
Ben Skeggs <bskeggs@redhat.com> Signed-off-by:
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Ben Skeggs authored
Backport of fixes from upstream commit: 9430738dSigned-off-by:
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