- 21 Mar, 2016 15 commits
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Joe Thornber authored
commit 1c751879 upstream. Allocate memory using GFP_NOIO when deleting a btree. dm_btree_del() can be called via an ioctl and we don't want to recurse into the FS or block layer. Signed-off-by:
Joe Thornber <ejt@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
Zefan Li <lizefan@huawei.com>
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Peter Sanford authored
commit f98a7aa8 upstream. Add the USB serial console device ID for Aruba Networks 7xxx series controllers which have a USB port for their serial console. Signed-off-by:
Peter Sanford <peter@sanford.io> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Claudio Cappelli authored
commit f6d7fb37 upstream. Add device Olivetti Olicard 300 (Network Connect: MT6225) - IDs 2020:4000. T: Bus=01 Lev=02 Prnt=04 Port=00 Cnt=01 Dev#= 10 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=2020 ProdID=4000 Rev=03.00 S: Manufacturer=Network Connect S: Product=MT6225 C: #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=02 Prot=01 Driver=option I: If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 6 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage Signed-off-by:
Claudio Cappelli <claudio.cappelli.linux@gmail.com> Suggested-by:
Lars Melin <larsm17@gmail.com> [johan: amend commit message with devices info ] Signed-off-by:
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Joe Thornber authored
commit a822c83e upstream. Given the pool's cell_sort_array holds 8192 pointers it triggers an order 5 allocation via kmalloc. This order 5 allocation is prone to failure as system memory gets more fragmented over time. Fix this by allocating the cell_sort_array using vmalloc. Signed-off-by:
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Dennis Yang authored
commit 4c7e3093 upstream. redistribute3() shares entries out across 3 nodes. Some entries were being moved the wrong way, breaking the ordering. This manifested as a BUG() in dm-btree-remove.c:shift() when entries were removed from the btree. For additional context see: https://www.redhat.com/archives/dm-devel/2015-May/msg00113.htmlSigned-off-by:
Dennis Yang <shinrairis@gmail.com> Signed-off-by:
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Dominic Sacré authored
commit 0689a86a upstream. The Steinberg MI2 and MI4 interfaces are compatible with the USB class audio spec, but the MIDI part of the devices is reported as a vendor specific interface. This patch adds entries to quirks-table.h to recognize the MIDI endpoints. Audio functionality was already working and is unaffected by this change. Signed-off-by:
Dominic Sacré <dominic.sacre@gmx.de> Signed-off-by:
Albert Huitsing <albert@huitsing.nl> Acked-by:
Clemens Ladisch <clemens@ladisch.de> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Al Viro authored
commit 0a73d0a2 upstream. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Joe Perches authored
commit a28e4b2b upstream. Removing unnecessary static buffers is good. Use the vsprintf %pV extension instead. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
Mikulas Patocka <mikulas@twibright.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> [Mikulas: - The bug corrected by the patch is - if hpfs_error is called concurrently on multiple filesystems, it could corrupt the string because the text buffer is shared. That's why I marked the patch for stable.] [lizf: Backported to 3.4: adjust context] Signed-off-by:
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Sanidhya Kashyap authored
commit ce657611 upstream. There is a possibility of nothing being allocated to the new_opts in case of memory pressure, therefore return ENOMEM for such case. Signed-off-by:
Sanidhya Kashyap <sanidhya.gatech@gmail.com> Signed-off-by:
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Kirill A. Shutemov authored
commit 6b7339f4 upstream. Reading page fault handler code I've noticed that under right circumstances kernel would map anonymous pages into file mappings: if the VMA doesn't have vm_ops->fault() and the VMA wasn't fully populated on ->mmap(), kernel would handle page fault to not populated pte with do_anonymous_page(). Let's change page fault handler to use do_anonymous_page() only on anonymous VMA (->vm_ops == NULL) and make sure that the VMA is not shared. For file mappings without vm_ops->fault() or shred VMA without vm_ops, page fault on pte_none() entry would lead to SIGBUS. Signed-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by:
Oleg Nesterov <oleg@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Willy Tarreau <w@1wt.eu> Signed-off-by:
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Michal Hocko authored
commit 7444a072 upstream. ext4_free_blocks is looping around the allocation request and mimics __GFP_NOFAIL behavior without any allocation fallback strategy. Let's remove the open coded loop and replace it with __GFP_NOFAIL. Without the flag the allocator has no way to find out never-fail requirement and cannot help in any way. Signed-off-by:
Michal Hocko <mhocko@suse.cz> Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
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Nikolay Borisov authored
commit c45653c3 upstream. Switch ext4 to using sb_getblk_gfp with GFP_NOFS added to fix possible deadlocks in the page writeback path. Signed-off-by:
Nikolay Borisov <kernel@kyup.com> Signed-off-by:
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Nikolay Borisov authored
commit bd7ade3c upstream. sb_getblk() is used during ext4 (and possibly other FSes) writeback paths. Sometimes such path require allocating memory and guaranteeing that such allocation won't block. Currently, however, there is no way to provide user flags for sb_getblk which could lead to deadlocks. This patch implements a sb_getblk_gfp with the only difference it can accept user-provided GFP flags. Signed-off-by:
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Gioh Kim authored
commit 3b5e6454 upstream. A buffer cache is allocated from movable area because it is referred for a while and released soon. But some filesystems are taking buffer cache for a long time and it can disturb page migration. New APIs are introduced to allocate buffer cache with user specific flag. *_gfp APIs are for user want to set page allocation flag for page cache allocation. And *_unmovable APIs are for the user wants to allocate page cache from non-movable area. Signed-off-by:
Gioh Kim <gioh.kim@lge.com> Signed-off-by:
Jan Kara <jack@suse.cz> [lizf: Backported to 3.4: adjust context] Signed-off-by:
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Filipe Manana authored
commit c3f4a168 upstream. The free space entries are allocated using kmem_cache_zalloc(), through __btrfs_add_free_space(), therefore we should use kmem_cache_free() and not kfree() to avoid any confusion and any potential problem. Looking at the kfree() definition at mm/slab.c it has the following comment: /* * (...) * * Don't free memory not originally allocated by kmalloc() * or you will run into trouble. */ So better be safe and use kmem_cache_free(). Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.cz> Signed-off-by:
Chris Mason <clm@fb.com> Signed-off-by:
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- 22 Oct, 2015 25 commits
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Zefan Li authored
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Olga Kornievskaia authored
commit a41cbe86 upstream. A test case is as the description says: open(foobar, O_WRONLY); sleep() --> reboot the server close(foobar) The bug is because in nfs4state.c in nfs4_reclaim_open_state() a few line before going to restart, there is clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &state->flags). NFS4CLNT_RECLAIM_NOGRACE is a flag for the client states not open owner states. Value of NFS4CLNT_RECLAIM_NOGRACE is 4 which is the value of NFS_O_WRONLY_STATE in nfs4_state->flags. So clearing it wipes out state and when we go to close it, “call_close” doesn’t get set as state flag is not set and CLOSE doesn’t go on the wire. Signed-off-by:
Olga Kornievskaia <aglo@umich.edu> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by:
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Eric W. Biederman authored
commit 397d425d upstream. In rare cases a directory can be renamed out from under a bind mount. In those cases without special handling it becomes possible to walk up the directory tree to the root dentry of the filesystem and down from the root dentry to every other file or directory on the filesystem. Like division by zero .. from an unconnected path can not be given a useful semantic as there is no predicting at which path component the code will realize it is unconnected. We certainly can not match the current behavior as the current behavior is a security hole. Therefore when encounting .. when following an unconnected path return -ENOENT. - Add a function path_connected to verify path->dentry is reachable from path->mnt.mnt_root. AKA to validate that rename did not do something nasty to the bind mount. To avoid races path_connected must be called after following a path component to it's next path component. Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Eric W. Biederman authored
commit cde93be4 upstream. A rename can result in a dentry that by walking up d_parent will never reach it's mnt_root. For lack of a better term I call this an escaped path. prepend_path is called by four different functions __d_path, d_absolute_path, d_path, and getcwd. __d_path only wants to see paths are connected to the root it passes in. So __d_path needs prepend_path to return an error. d_absolute_path similarly wants to see paths that are connected to some root. Escaped paths are not connected to any mnt_root so d_absolute_path needs prepend_path to return an error greater than 1. So escaped paths will be treated like paths on lazily unmounted mounts. getcwd needs to prepend "(unreachable)" so getcwd also needs prepend_path to return an error. d_path is the interesting hold out. d_path just wants to print something, and does not care about the weird cases. Which raises the question what should be printed? Given that <escaped_path>/<anything> should result in -ENOENT I believe it is desirable for escaped paths to be printed as empty paths. As there are not really any meaninful path components when considered from the perspective of a mount tree. So tweak prepend_path to return an empty path with an new error code of 3 when it encounters an escaped path. Signed-off-by:
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Mike Marciniszyn authored
commit d6f1c17e upstream. The lkey table is allocated with with a get_user_pages() with an order based on a number of index bits from a module parameter. The underlying kernel code cannot allocate that many contiguous pages. There is no reason the underlying memory needs to be physically contiguous. This patch: - switches the allocation/deallocation to vmalloc/vfree - caps the number of bits to 23 to insure at least 1 generation bit o this matches the module parameter description Reviewed-by:
Vinit Agnihotri <vinit.abhay.agnihotri@intel.com> Signed-off-by:
Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by:
Doug Ledford <dledford@redhat.com> [bwh: Backported to 3.2: - Adjust context - Add definition of qib_dev_warn(), added upstream by commit ddb88765 ("IB/qib: Convert opcode counters to per-context")] Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
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Jan Kara authored
commit 841df7df upstream. Commit 6f6a6fda "jbd2: fix ocfs2 corrupt when updating journal superblock fails" changed jbd2_cleanup_journal_tail() to return EIO when the journal is aborted. That makes logic in jbd2_log_do_checkpoint() bail out which is fine, except that jbd2_journal_destroy() expects jbd2_log_do_checkpoint() to always make a progress in cleaning the journal. Without it jbd2_journal_destroy() just loops in an infinite loop. Fix jbd2_journal_destroy() to cleanup journal checkpoint lists of jbd2_log_do_checkpoint() fails with error. Reported-by:
Eryu Guan <guaneryu@gmail.com> Tested-by:
Jan Kara <jack@suse.com> Signed-off-by:
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John Youn authored
commit aebda618 upstream. This fixes an issue introduced in commit b23c8439 (usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs) that made sure we would only use DEPSTARTCFG once per SetConfig. The trick is that we should use one DEPSTARTCFG per SetConfig *OR* SetInterface. SetInterface was completely missed from the original patch. This problem became aparent after commit 76e838c9 (usb: dwc3: gadget: return error if command sent to DEPCMD register fails) added checking of the return status of device endpoint commands. 'Set Endpoint Transfer Resource' command was caught failing occasionally. This is because the Transfer Resource Index was not getting reset during a SET_INTERFACE request. Finally, to fix the issue, was we have to do is make sure that our start_config_issued flag gets reset whenever we receive a SetInterface request. To verify the problem (and its fix), all we have to do is run test 9 from testusb with 'testusb -t 9 -s 2048 -a -c 5000'. Tested-by:
Huang Rui <ray.huang@amd.com> Tested-by:
Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com> Fixes: b23c8439 (usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs) Signed-off-by:
John Youn <johnyoun@synopsys.com> Signed-off-by:
Felipe Balbi <balbi@ti.com> [lizf: Backported to 3.4: use dev_vdbg() instead of dwc3_trace()] Signed-off-by:
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Zefan Li authored
Reported-by:
Jim Faulkner <jfaulkne@ccs.neu.edu> Fixed-by:
Nicolas Schichan <nschichan@freebox.fr> Signed-off-by:
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Zefan Li authored
Signed-off-by: -
Christian König authored
commit 7c0411d2 upstream. We have that bug for years and some users report side effects when fixing it on older hardware. So revert it for VM_CONTEXT0_PAGE_TABLE_END_ADDR, but keep it for VM 1-15. Signed-off-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> [lizf: Backported to 3.4: drop the change to clk.c] Signed-off-by:
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Zefan Li authored
This reverts commit 961bd135. Both Satoshi-san and Cal reported a kernel crash due to this commit. Reported-by:
Satoshi Iwamoto <satoshi.iwamoto@nifty.ne.jp> Reported-by:
Cal Peake <cp@absolutedigital.net> Signed-off-by:
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Jani Nikula authored
commit 245ec9d8 upstream. This reverts commit 0aedb162. I messed things up while applying [1] to drm-intel-fixes. Rectify. [1] http://mid.gmane.org/1432827156-9605-1-git-send-email-ville.syrjala@linux.intel.com Fixes: 0aedb162 ("drm/i915: Don't skip request retirement if the active list is empty") Acked-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> [lizf: Backported to 3.4: adjust context] Signed-off-by:
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Al Viro authored
commit a84b69cb upstream. If we'd already sent a request and decide to abort it, we *must* issue TFLUSH properly and not just blindly reuse the tag, or we'll get seriously screwed when response eventually arrives and we confuse it for response to later request that had reused the same tag. Signed-off-by:
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Radim Krčmář authored
commit db138562 upstream. Legacy NMI watchdog didn't work after migration/resume, because vapics_in_nmi_mode was left at 0. Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> [lizf: Backported to 3.4: - adjust context - s/kvm_apic_get_reg/apic_get_reg/] Signed-off-by:
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Radim Krčmář authored
commit 42720138 upstream. Writes were a bit racy, but hard to turn into a bug at the same time. (Particularly because modern Linux doesn't use this feature anymore.) Signed-off-by:
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Lv Zheng authored
commit c04be184 upstream. ACPICA commit 90f5332a15e9d9ba83831ca700b2b9f708274658 This patch adds a new FACS initialization flag for acpi_tb_initialize(). acpi_enable_subsystem() might be invoked several times in OS bootup process, and we don't want FACS initialization to be invoked twice. Lv Zheng. Link: https://github.com/acpica/acpica/commit/90f5332aSigned-off-by:
Lv Zheng <lv.zheng@intel.com> Signed-off-by:
Bob Moore <robert.moore@intel.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> [lizf: Backported to 3.4: adjust filename] Signed-off-by:
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Miklos Szeredi authored
commit 0ad0b325 upstream. fc->release is called from fuse_conn_put() which was used in the error cleanup before fc->release was initialized. [Jeremiah Mahler <jmmahler@gmail.com>: assign fc->release after calling fuse_conn_init(fc) instead of before.] Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz> Fixes: a325f9b9 ("fuse: update fuse_conn_init() and separate out fuse_conn_kill()") Signed-off-by:
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Ilya Dryomov authored
commit 82cd003a upstream. struct crush_bucket_tree::num_nodes is u8, so ceph_decode_8_safe() should be used. -Wconversion catches this, but I guess it went unnoticed in all the noise it spews. The actual problem (at least for common crushmaps) isn't the u32 -> u8 truncation though - it's the advancement by 4 bytes instead of 1 in the crushmap buffer. Fixes: http://tracker.ceph.com/issues/2759Signed-off-by:
Ilya Dryomov <idryomov@gmail.com> Reviewed-by:
Josh Durgin <jdurgin@redhat.com> Signed-off-by:
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Chris Wilson authored
commit 8b572a42 upstream. In needs_ilk_vtd_wa(), we pass in the GPU device but compared it against the ids for the mobile GPU and the mobile host bridge. That latter is impossible and so likely was just a typo for the desktop GPU device id (which is also buggy). Fixes commit da88a5f7 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Wed Feb 13 09:31:53 2013 +0000 drm/i915: Disable WC PTE updates to w/a buggy IOMMU on ILK Reported-by:
Ting-Wei Lan <lantw44@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91127 References: https://bugzilla.freedesktop.org/show_bug.cgi?id=60391Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Chris Metcalf authored
commit 2528a8b8 upstream. bitmap_parselist("", &mask, nmaskbits) will erroneously set bit zero in the mask. The same bug is visible in cpumask_parselist() since it is layered on top of the bitmask code, e.g. if you boot with "isolcpus=", you will actually end up with cpu zero isolated. The bug was introduced in commit 4b060420 ("bitmap, irq: add smp_affinity_list interface to /proc/irq") when bitmap_parselist() was generalized to support userspace as well as kernelspace. Fixes: 4b060420 ("bitmap, irq: add smp_affinity_list interface to /proc/irq") Signed-off-by:
Chris Metcalf <cmetcalf@ezchip.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Steven Rostedt (Red Hat) authored
commit 6b88f44e upstream. While debugging a WARN_ON() for filtering, I found that it is possible for the filter string to be referenced after its end. With the filter: # echo '>' > /sys/kernel/debug/events/ext4/ext4_truncate_exit/filter The filter_parse() function can call infix_get_op() which calls infix_advance() that updates the infix filter pointers for the cnt and tail without checking if the filter is already at the end, which will put the cnt to zero and the tail beyond the end. The loop then calls infix_next() that has ps->infix.cnt--; return ps->infix.string[ps->infix.tail++]; The cnt will now be below zero, and the tail that is returned is already passed the end of the filter string. So far the allocation of the filter string usually has some buffer that is zeroed out, but if the filter string is of the exact size of the allocated buffer there's no guarantee that the charater after the nul terminating character will be zero. Luckily, only root can write to the filter. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Steven Rostedt (Red Hat) authored
commit b4875bbe upstream. When testing the fix for the trace filter, I could not come up with a scenario where the operand count goes below zero, so I added a WARN_ON_ONCE(cnt < 0) to the logic. But there is legitimate case that it can happen (although the filter would be wrong). # echo '>' > /sys/kernel/debug/events/ext4/ext4_truncate_exit/filter That is, a single operation without any operands will hit the path where the WARN_ON_ONCE() can trigger. Although this is harmless, and the filter is reported as a error. But instead of spitting out a warning to the kernel dmesg, just fail nicely and report it via the proper channels. Link: http://lkml.kernel.org/r/558C6082.90608@oracle.comReported-by:
Vince Weaver <vincent.weaver@maine.edu> Reported-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
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Pali Rohár authored
commit b8830a4e upstream. This commit fix kernel crash when probing for rfkill devices in dell-laptop driver failed. Function free_page() was incorrectly used on struct page * instead of virtual address of SMI buffer. This commit also simplify allocating page for SMI buffer by using __get_free_page() function instead of sequential call of functions alloc_page() and page_address(). Signed-off-by:
Pali Rohár <pali.rohar@gmail.com> Acked-by:
Darren Hart <dvhart@linux.intel.com> [lizf: Backported to 3.4: adjust context] Signed-off-by:
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Catalin Marinas authored
commit c5f3b1a5 upstream. The kmemleak scanning thread can run for minutes. Callbacks like kmemleak_free() are allowed during this time, the race being taken care of by the object->lock spinlock. Such lock also prevents a memory block from being freed or unmapped while it is being scanned by blocking the kmemleak_free() -> ... -> __delete_object() function until the lock is released in scan_object(). When a kmemleak error occurs (e.g. it fails to allocate its metadata), kmemleak_enabled is set and __delete_object() is no longer called on freed objects. If kmemleak_scan is running at the same time, kmemleak_free() no longer waits for the object scanning to complete, allowing the corresponding memory block to be freed or unmapped (in the case of vfree()). This leads to kmemleak_scan potentially triggering a page fault. This patch separates the kmemleak_free() enabling/disabling from the overall kmemleak_enabled nob so that we can defer the disabling of the object freeing tracking until the scanning thread completed. The kmemleak_free_part() is deliberately ignored by this patch since this is only called during boot before the scanning thread started. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Reported-by:
Vignesh Radhakrishnan <vigneshr@codeaurora.org> Tested-by:
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Alexey Brodkin authored
commit f1590670 upstream. Current implementation of descriptor init procedure only takes care about setting/clearing ownership flag in "des0"/"des1" fields while it is perfectly possible to get unexpected bits set because of the following factors: [1] On driver probe underlying memory allocated with dma_alloc_coherent() might not be zeroed and so it will be filled with garbage. [2] During driver operation some bits could be set by SD/MMC controller (for example error flags etc). And unexpected and/or randomly set flags in "des0"/"des1" fields may lead to unpredictable behavior of GMAC DMA block. This change addresses both items above with: [1] Use of dma_zalloc_coherent() instead of simple dma_alloc_coherent() to make sure allocated memory is zeroed. That shouldn't affect performance because this allocation only happens once on driver probe. [2] Do explicit zeroing of both "des0" and "des1" fields of all buffer descriptors during initialization of DMA transfer. And while at it fixed identation of dma_free_coherent() counterpart as well. Signed-off-by:
Alexey Brodkin <abrodkin@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: arc-linux-dev@synopsys.com Cc: linux-kernel@vger.kernel.org Cc: David Miller <davem@davemloft.net> Signed-off-by:
David S. Miller <davem@davemloft.net> [lizf: Backported to 3.4: - adjust contest - adjust allocations in init_dma_desc_rings()] Signed-off-by:
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