- 15 Dec, 2014 2 commits
-
-
lucien authored
[ Upstream commit 20ea60ca ] Now the vti_link_ops do not point the .dellink, for fb tunnel device (ip_vti0), the net_device will be removed as the default .dellink is unregister_netdevice_queue,but the tunnel still in the tunnel list, then if we add a new vti tunnel, in ip_tunnel_find(): hlist_for_each_entry_rcu(t, head, hash_node) { if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr && link == t->parms.link && ==> type == t->dev->type && ip_tunnel_key_match(&t->parms, flags, key)) break; } the panic will happen, cause dev of ip_tunnel *t is null: [ 3835.072977] IP: [<ffffffffa04103fd>] ip_tunnel_find+0x9d/0xc0 [ip_tunnel] [ 3835.073008] PGD b2c21067 PUD b7277067 PMD 0 [ 3835.073008] Oops: 0000 [#1] SMP ..... [ 3835.073008] Stack: [ 3835.073008] ffff8800b72d77f0 ffffffffa0411924 ffff8800bb956000 ffff8800b72d78e0 [ 3835.073008] ffff8800b72d78a0 0000000000000000 ffffffffa040d100 ffff8800b72d7858 [ 3835.073008] ffffffffa040b2e3 0000000000000000 0000000000000000 0000000000000000 [ 3835.073008] Call Trace: [ 3835.073008] [<ffffffffa0411924>] ip_tunnel_newlink+0x64/0x160 [ip_tunnel] [ 3835.073008] [<ffffffffa040b2e3>] vti_newlink+0x43/0x70 [ip_vti] [ 3835.073008] [<ffffffff8150d4da>] rtnl_newlink+0x4fa/0x5f0 [ 3835.073008] [<ffffffff812f68bb>] ? nla_strlcpy+0x5b/0x70 [ 3835.073008] [<ffffffff81508fb0>] ? rtnl_link_ops_get+0x40/0x60 [ 3835.073008] [<ffffffff8150d11f>] ? rtnl_newlink+0x13f/0x5f0 [ 3835.073008] [<ffffffff81509cf4>] rtnetlink_rcv_msg+0xa4/0x270 [ 3835.073008] [<ffffffff8126adf5>] ? sock_has_perm+0x75/0x90 [ 3835.073008] [<ffffffff81509c50>] ? rtnetlink_rcv+0x30/0x30 [ 3835.073008] [<ffffffff81529e39>] netlink_rcv_skb+0xa9/0xc0 [ 3835.073008] [<ffffffff81509c48>] rtnetlink_rcv+0x28/0x30 .... modprobe ip_vti ip link del ip_vti0 type vti ip link add ip_vti0 type vti rmmod ip_vti do that one or more times, kernel will panic. fix it by assigning ip_tunnel_dellink to vti_link_ops' dellink, in which we skip the unregister of fb tunnel device. do the same on ip6_vti. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
Cong Wang <cwang@twopensource.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
-
Alex Deucher authored
commit 83d04c39 upstream. Fixes kfree of the sadb buffer when it's NULL. Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> BugLink: http://bugs.launchpad.net/bugs/1402714 (backported from commit 83d04c39) Signed-off-by:
Chris J Arges <chris.j.arges@canonical.com> Signed-off-by:
-
- 09 Dec, 2014 38 commits
-
-
Grygorii Strashko authored
commit 9ea359f7 upstream. According to I2C specification the NACK should be handled as follows: "When SDA remains HIGH during this ninth clock pulse, this is defined as the Not Acknowledge signal. The master can then generate either a STOP condition to abort the transfer, or a repeated START condition to start a new transfer." [I2C spec Rev. 6, 3.1.6: http://www.nxp.com/documents/user_manual/UM10204.pdf] Currently the Davinci i2c driver interrupts the transfer on receipt of a NACK but fails to send a STOP in some situations and so makes the bus stuck until next I2C IP reset (idle/enable). For example, the issue will happen during SMBus read transfer which consists from two i2c messages write command/address and read data: S Slave Address Wr A Command Code A Sr Slave Address Rd A D1..Dn A P <--- write -----------------------> <--- read ---------------------> The I2C client device will send NACK if it can't recognize "Command Code" and it's expected from I2C master to generate STP in this case. But now, Davinci i2C driver will just exit with -EREMOTEIO and STP will not be generated. Hence, fix it by generating Stop condition (STP) always when NACK is received. This patch fixes Davinci I2C in the same way it was done for OMAP I2C commit cda2109a ("i2c: omap: query STP always when NACK is received"). Reviewed-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reported-by:
Hein Tibosch <hein_tibosch@yahoo.es> Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
-
Tejun Heo authored
commit 2b21ef0a upstream. Just like 0x1600 which got blacklisted by 66a7cbc3 ("ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks"), 0xa800 chokes on NCQ commands if MSI is enabled. Disable MSI. Signed-off-by:
Tejun Heo <tj@kernel.org> Reported-by:
Dominik Mierzejewski <dominik@greysector.net> Link: https://bugzilla.kernel.org/show_bug.cgi?id=89171Signed-off-by:
-
Paul Mackerras authored
commit 7c3fbbdd upstream. The bounds check for nodeid in ____cache_alloc_node gives false positives on machines where the node IDs are not contiguous, leading to a panic at boot time. For example, on a POWER8 machine the node IDs are typically 0, 1, 16 and 17. This means that num_online_nodes() returns 4, so when ____cache_alloc_node is called with nodeid = 16 the VM_BUG_ON triggers, like this: kernel BUG at /home/paulus/kernel/kvm/mm/slab.c:3079! Call Trace: .____cache_alloc_node+0x5c/0x270 (unreliable) .kmem_cache_alloc_node_trace+0xdc/0x360 .init_list+0x3c/0x128 .kmem_cache_init+0x1dc/0x258 .start_kernel+0x2a0/0x568 start_here_common+0x20/0xa8 To fix this, we instead compare the nodeid with MAX_NUMNODES, and additionally make sure it isn't negative (since nodeid is an int). The check is there mainly to protect the array dereference in the get_node() call in the next line, and the array being dereferenced is of size MAX_NUMNODES. If the nodeid is in range but invalid (for example if the node is off-line), the BUG_ON in the next line will catch that. Fixes: 14e50c6a ("mm: slab: Verify the nodeid passed to ____cache_alloc_node") Signed-off-by:
Paul Mackerras <paulus@samba.org> Reviewed-by:
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Reviewed-by:
Pekka Enberg <penberg@kernel.org> Acked-by:
David Rientjes <rientjes@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Daniel Forrest authored
commit c4ea95d7 upstream. Andrew Morton noticed that the error return from anon_vma_clone() was being dropped and replaced with -ENOMEM (which is not itself a bug because the only error return value from anon_vma_clone() is -ENOMEM). I did an audit of callers of anon_vma_clone() and discovered an actual bug where the error return was being lost. In __split_vma(), between Linux 3.11 and 3.12 the code was changed so the err variable is used before the call to anon_vma_clone() and the default initial value of -ENOMEM is overwritten. So a failure of anon_vma_clone() will return success since err at this point is now zero. Below is a patch which fixes this bug and also propagates the error return value from anon_vma_clone() in all cases. Fixes: ef0855d3 ("mm: mempolicy: turn vma_set_policy() into vma_dup_policy()") Signed-off-by:
Daniel Forrest <dan.forrest@ssec.wisc.edu> Reviewed-by:
Michal Hocko <mhocko@suse.cz> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Tim Hartrick <tim@edgecast.com> Cc: Hugh Dickins <hughd@google.com> Cc: Michel Lespinasse <walken@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by:
-
Hugh Dickins authored
commit 2022b4d1 upstream. I've been seeing swapoff hangs in recent testing: it's cycling around trying unsuccessfully to find an mm for some remaining pages of swap. I have been exercising swap and page migration more heavily recently, and now notice a long-standing error in copy_one_pte(): it's trying to add dst_mm to swapoff's mmlist when it finds a swap entry, but is doing so even when it's a migration entry or an hwpoison entry. Which wouldn't matter much, except it adds dst_mm next to src_mm, assuming src_mm is already on the mmlist: which may not be so. Then if pages are later swapped out from dst_mm, swapoff won't be able to find where to replace them. There's already a !non_swap_entry() test for stats: move that up before the swap_duplicate() and the addition to mmlist. Signed-off-by:
Hugh Dickins <hughd@google.com> Cc: Kelley Nielsen <kelleynnn@gmail.com> Signed-off-by:
-
Andrew Morton authored
commit 92788ac1 upstream. If kzalloc() failed and then evdev_open_device() fails, evdev_open() will pass a vmalloc'ed pointer to kfree. This might fix https://bugzilla.kernel.org/show_bug.cgi?id=88401, where there was a crash in kfree(). Reported-by:
Christian Casteyde <casteyde.christian@free.fr> Belatedly-Acked-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Henrik Rydberg <rydberg@euromail.se> Signed-off-by:
-
Seth Forshee authored
commit 8d609725 upstream. These BUGs can be erroneously triggered by frags which refer to tail pages within a compound page. The data in these pages may overrun the hardware page while still being contained within the compound page, but since compound_order() evaluates to 0 for tail pages the assertion fails. The code already iterates through subsequent pages correctly in this scenario, so the BUGs are unnecessary and can be removed. Fixes: f36c3747 ("xen/netfront: handle compound page fragments on transmit") Signed-off-by:
Seth Forshee <seth.forshee@canonical.com> Reviewed-by:
David Vrabel <david.vrabel@citrix.com> Signed-off-by:
-
Andrew Morton authored
commit 91b57191 upstream. In some android devices, there will be a "divide by zero" exception. vmpr->scanned could be zero before spin_lock(&vmpr->sr_lock). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=88051 [akpm@linux-foundation.org: neaten] Reported-by:
ji_ang <ji_ang@163.com> Cc: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by:
-
Weijie Yang authored
commit fb993fa1 upstream. If a frontswap dup-store failed, it should invalidate the expired page in the backend, or it could trigger some data corruption issue. Such as: 1. use zswap as the frontswap backend with writeback feature 2. store a swap page(version_1) to entry A, success 3. dup-store a newer page(version_2) to the same entry A, fail 4. use __swap_writepage() write version_2 page to swapfile, success 5. zswap do shrink, writeback version_1 page to swapfile 6. version_2 page is overwrited by version_1, data corrupt. This patch fixes this issue by invalidating expired data immediately when meet a dup-store failure. Signed-off-by:
Weijie Yang <weijie.yang@samsung.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Seth Jennings <sjennings@variantweb.net> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Bob Liu <bob.liu@oracle.com> Signed-off-by:
-
Petr Mladek authored
commit f5475cc4 upstream. I was unable too boot 3.18.0-rc6 because of the following kernel panic in drm_calc_vbltimestamp_from_scanoutpos(): [drm] Initialized drm 1.1.0 20060810 [drm] radeon kernel modesetting enabled. [drm] initializing kernel modesetting (RV100 0x1002:0x515E 0x15D9:0x8080). [drm] register mmio base: 0xC8400000 [drm] register mmio size: 65536 radeon 0000:0b:01.0: VRAM: 128M 0x00000000D0000000 - 0x00000000D7FFFFFF (16M used) radeon 0000:0b:01.0: GTT: 512M 0x00000000B0000000 - 0x00000000CFFFFFFF [drm] Detected VRAM RAM=128M, BAR=128M [drm] RAM width 16bits DDR [TTM] Zone kernel: Available graphics memory: 3829346 kiB [TTM] Zone dma32: Available graphics memory: 2097152 kiB [TTM] Initializing pool allocator [TTM] Initializing DMA pool allocator [drm] radeon: 16M of VRAM memory ready [drm] radeon: 512M of GTT memory ready. [drm] GART: num cpu pages 131072, num gpu pages 131072 [drm] PCI GART of 512M enabled (table at 0x0000000037880000). radeon 0000:0b:01.0: WB disabled radeon 0000:0b:01.0: fence driver on ring 0 use gpu addr 0x00000000b0000000 and cpu addr 0xffff8800bbbfa000 [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [drm] Driver supports precise vblank timestamp query. [drm] radeon: irq initialized. [drm] Loading R100 Microcode radeon 0000:0b:01.0: Direct firmware load for radeon/R100_cp.bin failed with error -2 radeon_cp: Failed to load firmware "radeon/R100_cp.bin" [drm:r100_cp_init] *ERROR* Failed to load firmware! radeon 0000:0b:01.0: failed initializing CP (-2). radeon 0000:0b:01.0: Disabling GPU acceleration [drm] radeon: cp finalized BUG: unable to handle kernel NULL pointer dereference at 000000000000025c IP: [<ffffffff8150423b>] drm_calc_vbltimestamp_from_scanoutpos+0x4b/0x320 PGD 0 Oops: 0000 [#1] SMP Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc6-4-default #2649 Hardware name: Supermicro X7DB8/X7DB8, BIOS 6.00 07/26/2006 task: ffff880234da2010 ti: ffff880234da4000 task.ti: ffff880234da4000 RIP: 0010:[<ffffffff8150423b>] [<ffffffff8150423b>] drm_calc_vbltimestamp_from_scanoutpos+0x4b/0x320 RSP: 0000:ffff880234da7918 EFLAGS: 00010086 RAX: ffffffff81557890 RBX: 0000000000000000 RCX: ffff880234da7a48 RDX: ffff880234da79f4 RSI: 0000000000000000 RDI: ffff880232e15000 RBP: ffff880234da79b8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000000a R11: 0000000000000001 R12: ffff880232dda1c0 R13: ffff880232e1518c R14: 0000000000000292 R15: ffff880232e15000 FS: 0000000000000000(0000) GS:ffff88023fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000000025c CR3: 0000000002014000 CR4: 00000000000007e0 Stack: ffff880234da79d8 0000000000000286 ffff880232dcbc00 0000000000002480 ffff880234da7958 0000000000000296 ffff880234da7998 ffffffff8151b51d ffff880234da7a48 0000000032dcbeb0 ffff880232dcbc00 ffff880232dcbc58 Call Trace: [<ffffffff8151b51d>] ? drm_vma_offset_remove+0x1d/0x110 [<ffffffff8152dc98>] radeon_get_vblank_timestamp_kms+0x38/0x60 [<ffffffff8152076a>] ? ttm_bo_release_list+0xba/0x180 [<ffffffff81503751>] drm_get_last_vbltimestamp+0x41/0x70 [<ffffffff81503933>] vblank_disable_and_save+0x73/0x1d0 [<ffffffff81106b2f>] ? try_to_del_timer_sync+0x4f/0x70 [<ffffffff81505245>] drm_vblank_cleanup+0x65/0xa0 [<ffffffff815604fa>] radeon_irq_kms_fini+0x1a/0x70 [<ffffffff8156c07e>] r100_init+0x26e/0x410 [<ffffffff8152ae3e>] radeon_device_init+0x7ae/0xb50 [<ffffffff8152d57f>] radeon_driver_load_kms+0x8f/0x210 [<ffffffff81506965>] drm_dev_register+0xb5/0x110 [<ffffffff8150998f>] drm_get_pci_dev+0x8f/0x200 [<ffffffff815291cd>] radeon_pci_probe+0xad/0xe0 [<ffffffff8141a365>] local_pci_probe+0x45/0xa0 [<ffffffff8141b741>] pci_device_probe+0xd1/0x130 [<ffffffff81633dad>] driver_probe_device+0x12d/0x3e0 [<ffffffff8163413b>] __driver_attach+0x9b/0xa0 [<ffffffff816340a0>] ? __device_attach+0x40/0x40 [<ffffffff81631cd3>] bus_for_each_dev+0x63/0xa0 [<ffffffff8163378e>] driver_attach+0x1e/0x20 [<ffffffff81633390>] bus_add_driver+0x180/0x240 [<ffffffff81634914>] driver_register+0x64/0xf0 [<ffffffff81419cac>] __pci_register_driver+0x4c/0x50 [<ffffffff81509bf5>] drm_pci_init+0xf5/0x120 [<ffffffff821dc871>] ? ttm_init+0x6a/0x6a [<ffffffff821dc908>] radeon_init+0x97/0xb5 [<ffffffff810002fc>] do_one_initcall+0xbc/0x1f0 [<ffffffff810e3278>] ? __wake_up+0x48/0x60 [<ffffffff8218e256>] kernel_init_freeable+0x18a/0x215 [<ffffffff8218d983>] ? initcall_blacklist+0xc0/0xc0 [<ffffffff818a78f0>] ? rest_init+0x80/0x80 [<ffffffff818a78fe>] kernel_init+0xe/0xf0 [<ffffffff818c0c3c>] ret_from_fork+0x7c/0xb0 [<ffffffff818a78f0>] ? rest_init+0x80/0x80 Code: 45 ac 0f 88 a8 01 00 00 3b b7 d0 01 00 00 49 89 ff 0f 83 99 01 00 00 48 8b 47 20 48 8b 80 88 00 00 00 48 85 c0 0f 84 cd 01 00 00 <41> 8b b1 5c 02 00 00 41 8b 89 58 02 00 00 89 75 98 41 8b b1 60 RIP [<ffffffff8150423b>] drm_calc_vbltimestamp_from_scanoutpos+0x4b/0x320 RSP <ffff880234da7918> CR2: 000000000000025c ---[ end trace ad2c0aadf48e2032 ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 It has helped me to add a NULL pointer check that was suggested at http://lists.freedesktop.org/archives/dri-devel/2014-October/070663.html I am not familiar with the code. But the change looks sane and we need something fast at this stage of 3.18 development. Suggested-by:
Helge Deller <deller@gmx.de> Signed-off-by:
Petr Mladek <pmladek@suse.cz> Tested-by:
-
Dmitry Torokhov authored
commit aad0b624 upstream. irq_of_parse_and_map() returns 0 on error (the result is unsigned int), so testing for negative result never works. Signed-off-by:
Dmitry Torokhov <dtor@chromium.org> Signed-off-by:
-
Devin Ryles authored
commit 249cd0a1 upstream. This patch adds DeviceIDs for Sunrise Point-LP. Signed-off-by:
Devin Ryles <devin.ryles@intel.com> Signed-off-by:
-
Daniel Vetter authored
commit b0616c53 upstream. Otherwise we'll have backtraces in assert_panel_unlocked because the BIOS locks the register. In the reporter's case this regression was introduced in commit c31407a3 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Oct 18 21:07:01 2012 +0100 drm/i915: Add no-lvds quirk for Supermicro X7SPA-H Reported-by:
Alexey Orishko <alexey.orishko@gmail.com> Cc: Alexey Orishko <alexey.orishko@gmail.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Francois Tigeot <ftigeot@wolfpond.org> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Tested-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
-
Daniel Vetter authored
commit b6836227 upstream. Apparently PCH fifo underruns are tricky, we have plenty reports that we see the occasional underrun (especially at boot-up). So for a change let's see what happens when we don't re-enable pch fifo underrun reporting when the pipe is disabled. This means that the kernel can't catch pch fifo underruns when they happen (except when all pipes are on on the pch). But we'll still catch underruns when disabling the pipe again. So not a terrible reduction in test coverage. Since the DRM_ERROR is new and hence a regression plan B would be to revert it back to a debug output. Which would be a lot worse than this hack for underrun test coverage in the wild. See the referenced discussions for more. References: http://mid.gmane.org/CA+gsUGRfGe3t4NcjdeA=qXysrhLY3r4CEu7z4bjTwxi1uOfy+g@mail.gmail.com Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85898 References: https://bugs.freedesktop.org/show_bug.cgi?id=85898 References: https://bugs.freedesktop.org/show_bug.cgi?id=86233 References: https://bugs.freedesktop.org/show_bug.cgi?id=86478Signed-off-by:
lu hua <huax.lu@intel.com> Reviewed-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
-
Ilia Mirkin authored
commit 226d63a1 upstream. Indications are that no GF116's actually have a copy engine there, but actually have the decompression engine. This engine can be made to do copies, but that should be done separately. Unclear why this didn't turn up on all GF116's, but perhaps the non-mobile ones came with enough VRAM to not trigger ttm migrations in test scenarios. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=85465 Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=59168Signed-off-by:
Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by:
Ben Skeggs <bskeggs@redhat.com> Signed-off-by:
-
Alexander Kochetkov authored
commit 27caca9d upstream. commit 1d7afc95 (i2c: omap: ack IRQ in parts) changed the interrupt handler to complete transfers without clearing XRDY (AL case) and ARDY (NACK case) flags. XRDY or ARDY interrupts will be fired again. As a result, ISR keep processing transfer after it was already complete (from the driver code point of view). A didn't see real impacts of the 1d7afc95, but it is really bad idea to have ISR running on user data after transfer was complete. It looks, what 1d7afc95 violate TI specs in what how AL and NACK should be handled (see Note 1, sprugn4r, Figure 17-31 and Figure 17-32). According to specs (if I understood correctly), in case of NACK and AL driver must reset NACK, AL, ARDY, RDR, and RRDY (Master Receive Mode), and NACK, AL, ARDY, and XDR (Master Transmitter Mode). All that is done down the code under the if condition: if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK | OMAP_I2C_STAT_AL)) ... The patch restore pre 1d7afc95 logic of handling NACK and AL interrupts, so no interrupts is fired after ISR informs the rest of driver what transfer complete. Note: instead of removing break under NACK case, we could just replace 'break' with 'continue' and allow NACK transfer to finish using ARDY event. I found that NACK and ARDY bits usually set together. That case confirm TI wiki: http://processors.wiki.ti.com/index.php/I2C_Tips#Detecting_and_handling_NACK In order if someone interested in the event traces for NACK and AL cases, I sent them to mailing list. Tested on Beagleboard XM C. Signed-off-by:
Alexander Kochetkov <al.kochet@gmail.com> Fixes: 1d7afc95 i2c: omap: ack IRQ in parts Acked-by:
Felipe Balbi <balbi@ti.com> Tested-by:
Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by:
-
Sakari Ailus authored
commit b31eb901 upstream. Setting a non-settable selection target caused BUG() to be called. The check for valid selections only takes the selection target into account, but does not tell whether it may be set, or only get. Fix the issue by simply returning an error to the user. Signed-off-by:
Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by:
-
Chris Mason authored
commit 2f19cad9 upstream. Don Bailey noticed that our page zeroing for compression at end-io time isn't complete. This reworks a patch from Linus to push the zeroing into the zlib and lzo specific functions instead of trying to handle the corners inside btrfs_decompress_buf2page Signed-off-by:
Chris Mason <clm@fb.com> Reviewed-by:
Josef Bacik <jbacik@fb.com> Reported-by:
Don A. Bailey <donb@securitymouse.com> Signed-off-by:
-
Larry Finger authored
commit 6d4556fc upstream. The DLink GO-USB-N150 with revision B1 uses this driver. Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
-
Vladimir Murzin authored
commit 3f4aa45c upstream. We cannot restart cacheflush safely if a process provides user-defined signal handler and signal is pending. In this case -EINTR is returned and it is expected that process re-invokes syscall. However, there are a few problems with that: * looks like nobody bothers checking return value from cacheflush * but if it did, we don't provide the restart address for that, so the process has to use the same range again * ...and again, what might lead to looping forever So, remove cacheflush restarting code and terminate cache flushing as early as fatal signal is pending. Reported-by:
Chanho Min <chanho.min@lge.com> Signed-off-by:
Vladimir Murzin <vladimir.murzin@arm.com> Acked-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
-
Thomas Petazzoni authored
commit 995ab518 upstream. Under extremely rare conditions, in an MPCore node consisting of at least 3 CPUs, two CPUs trying to perform a STREX to data on the same shared cache line can enter a livelock situation. This patch enables the HW mechanism that overcomes the bug. This fixes the incorrect setup of the STREX backoff delay bit due to a wrong description in the specification. Note that enabling the STREX backoff delay mechanism is done by leaving the bit *cleared*, while the bit was currently being set by the proc-v7.S code. [Thomas: adapt to latest mainline, slightly reword the commit log, add stable markers.] Fixes: de490193 ("arm: mm: Add support for PJ4B cpu and init routines") Signed-off-by:
Nadav Haklai <nadavh@marvell.com> Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by:
Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by:
Jason Cooper <jason@lakedaemon.net> Signed-off-by:
-
Anton Blanchard authored
commit 152d44a8 upstream. I used some 64 bit instructions when adding the 32 bit getcpu VDSO function. Fix it. Fixes: 18ad51dd ("powerpc: Add VDSO version of getcpu") Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
-
Laurent Dufour authored
commit 3b8a3c01 upstream. On pseries system (LPAR) xmon failed to enter when running in LE mode, system is hunging. Inititating xmon will lead to such an output on the console: SysRq : Entering xmon cpu 0x15: Vector: 0 at [c0000003f39ffb10] pc: c00000000007ed7c: sysrq_handle_xmon+0x5c/0x70 lr: c00000000007ed7c: sysrq_handle_xmon+0x5c/0x70 sp: c0000003f39ffc70 msr: 8000000000009033 current = 0xc0000003fafa7180 paca = 0xc000000007d75e80 softe: 0 irq_happened: 0x01 pid = 14617, comm = bash Bad kernel stack pointer fafb4b0 at eca7cc4 cpu 0x15: Vector: 300 (Data Access) at [c000000007f07d40] pc: 000000000eca7cc4 lr: 000000000eca7c44 sp: fafb4b0 msr: 8000000000001000 dar: 10000000 dsisr: 42000000 current = 0xc0000003fafa7180 paca = 0xc000000007d75e80 softe: 0 irq_happened: 0x01 pid = 14617, comm = bash cpu 0x15: Exception 300 (Data Access) in xmon, returning to main loop xmon: WARNING: bad recursive fault on cpu 0x15 The root cause is that xmon is calling RTAS to turn off the surveillance when entering xmon, and RTAS is requiring big endian parameters. This patch is byte swapping the RTAS arguments when running in LE mode. Signed-off-by:
Laurent Dufour <ldufour@linux.vnet.ibm.com> Signed-off-by:
-
Greg Kroah-Hartman authored
commit a1f9a407 upstream. The xpad wireless endpoint is not a bulk endpoint on my devices, but rather an interrupt one, so the USB core complains when it is submitted. I'm guessing that the author really did mean that this should be an interrupt urb, but as there are a zillion different xpad devices out there, let's cover out bases and handle both bulk and interrupt endpoints just as easily. Signed-off-by:
"Pierre-Loup A. Griffais" <pgriffais@valvesoftware.com> Signed-off-by:
-
Hans de Goede authored
commit 263e80b4 upstream. This wireless mouse receiver needs a reset-resume quirk to properly come out of reset. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1165206Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
-
Jane Zhou authored
commit 91a0b603 upstream. ping_lookup() may return a wrong sock if sk_buff's and sock's protocols dont' match. For example, sk_buff's protocol is ETH_P_IPV6, but sock's sk_family is AF_INET, in that case, if sk->sk_bound_dev_if is zero, a wrong sock will be returned. the fix is to "continue" the searching, if no matching, return NULL. Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Cc: netdev@vger.kernel.org Signed-off-by:
Jane Zhou <a17711@motorola.com> Signed-off-by:
Yiwei Zhao <gbjc64@motorola.com> Signed-off-by:
-
Aaro Koskinen authored
commit 26927f76 upstream. If SERIAL_8250 is compiled as a module, the platform specific setup for Loongson will be a module too, and it will not work very well. At least on Loongson 3 it will trigger a build failure, since loongson_sysconf is not exported to modules. Fix by making the platform specific serial code always built-in. Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: Huacai Chen <chenhc@lemote.com> Cc: Markos Chandras <Markos.Chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/8533/Signed-off-by:
-
Benjamin Herrenschmidt authored
commit 415072a0 upstream. Instead of the arch specific quirk which we are deprecating Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
-
Benjamin Herrenschmidt authored
commit 36074381 upstream. Instead of the arch specific quirk which we are deprecating and that drivers don't understand. Signed-off-by:
-
Benjamin Herrenschmidt authored
commit db79afa1 upstream. A number of radeon cards have a HW limitation causing them to be unable to generate the full 64-bit of address bits for MSIs. This breaks MSIs on some platforms such as POWER machines. We used to have a powerpc specific quirk to address that on a single card, but this doesn't scale very well, this is better put under control of the drivers who know precisely what a given HW revision can do. We now have a generic quirk in the PCI code. We should set it appropriately for all radeon's from the audio driver. Signed-off-by:
Takashi Iwai <tiwai@suse.de> Reviewed-by:
-
Benjamin Herrenschmidt authored
commit 91ed6fd2 upstream. Some radeon ASICs don't support all 64 address bits of MSIs despite advertising support for 64-bit MSIs in their configuration space. This breaks on systems such as IBM POWER7/8, where 64-bit MSIs can be assigned with some of the high address bits set. This makes use of the newly introduced "no_64bit_msi" flag in structure pci_dev to allow the MSI allocation code to fallback to 32-bit MSIs on those adapters. Signed-off-by:
-
Benjamin Herrenschmidt authored
commit f144d149 upstream. This can be set by quirks/drivers to be used by the architecture code that assigns the MSI addresses. We additionally add verification in the core MSI code that the values assigned by the architecture do satisfy the limitation in order to fail gracefully if they don't (ie. the arch hasn't been updated to deal with that quirk yet). Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> [ kamal: backport to 3.13-stable: error: label ] Signed-off-by:
-
Takashi Iwai authored
commit 413cbf46 upstream. AMD/ATI HDMI controller chip models, we already have a filter to lower to 32bit DMA, but the rest are supposed to be working with 64bit although the hardware doesn't really work with 63bit but only with 40 or 48bit DMA. In this patch, we take 40bit DMA for safety for the AMD/ATI controllers as the graphics drivers does. Signed-off-by:
-
Lu Baolu authored
commit a1377e53 upstream. When system is being suspended, if host device is not allowed to do wakeup, xhci_suspend() needs to clear all root port wake on bits. Otherwise, some platforms may generate spurious wakeup, even if PCI PME# is disabled. The initial commit ff8cbf25 ("xhci: clear root port wake on bits"), which also got into stable, turned out to not work correctly and had to be reverted, and is now rewritten. Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Suggested-by:
Alan Stern <stern@rowland.harvard.edu> Acked-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
-
Mathias Nyman authored
commit 8e71a322 upstream. If a device is halted and reuturns a STALL, then the halted endpoint needs to be cleared both on the host and device side. The host side halt is cleared by issueing a xhci reset endpoint command. The device side is cleared with a ClearFeature(ENDPOINT_HALT) request, which should be issued by the device driver if a URB reruen -EPIPE. Previously we cleared the host side halt after the device side was cleared. To make sure the host side halt is cleared in time we want to issue the reset endpoint command immedialtely when a STALL status is encountered. Otherwise we end up not following the specs and not returning -EPIPE several times in a row when trying to transfer data to a halted endpoint. Fixes: bcef3fd5 (USB: xhci: Handle errors that cause endpoint halts.) Tested-by:
-
Lu Baolu authored
commit ff8cbf25 ("xhci: clear root port wake on bits if controller isn't") can cause device detection error if runtime PM is enabled, and S3 wake is disabled. Revert it. https://bugzilla.kernel.org/show_bug.cgi?id=85701 This commit got into stable and should be reverted from there as well. Signed-off-by:
Dmitry Nezhevenko <dion@inhex.net> [Mathias Nyman: reword commit message] Signed-off-by:
-
Mathias Nyman authored
commit c3492dbf upstream. A halted endpoint ring must first be reset, then move the ring dequeue pointer past the problematic TRB. If we start the ring too early after reset, but before moving the dequeue pointer we will end up executing the same problematic TRB again. As we always issue a set transfer dequeue command after a reset endpoint command we can skip starting endpoint rings at reset endpoint command completion. Without this fix we end up trying to handle the same faulty TD for contol endpoints. causing timeout, and failing testusb ctrl_out write tests. Fixes: e9df17eb (USB: xhci: Correct assumptions about number of rings per endpoint.) Tested-by:
-
Dmitry Eremin-Solenikov authored
commit ef59a20b upstream. According to the manuals I have, XScale auxiliary register should be reached with opc_2 = 1 instead of crn = 1. cpu_xscale_proc_init correctly uses c1, c0, 1 arguments, but cpu_xscale_do_suspend and cpu_xscale_do_resume use c1, c1, 0. Correct suspend/resume functions to also use c1, c0, 1. The issue was primarily noticed thanks to qemu reporing "unsupported instruction" on the pxa suspend path. Confirmed in PXA210/250 and PXA255 XScale Core manuals and in PXA270 and PXA320 Developers Guides. Harware tested by me on tosa (pxa255). Robert confirmed on pxa270 board. Tested-by:
Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by:
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by:
-
