- 01 Mar, 2015 22 commits
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James Hogan authored
commit 044f0f03 upstream. When about to run the guest, deliver guest interrupts after disabling host interrupts. This should prevent an hrtimer interrupt from being handled after delivering guest interrupts, and therefore not delivering the guest timer interrupt until after the next guest exit. Signed-off-by:
James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: kvm@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: Sanjay Lal <sanjayl@kymasys.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Jiri Slaby <jslaby@suse.cz>
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Jeff Layton authored
commit 6ffa30d3 upstream. Bruce reported seeing this warning pop when mounting using v4.1: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1121 at kernel/sched/core.c:7300 __might_sleep+0xbd/0xd0() do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff810ff58f>] prepare_to_wait+0x2f/0x90 Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc fscache ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer ppdev joydev snd virtio_console virtio_balloon pcspkr serio_raw parport_pc parport pvpanic floppy soundcore i2c_piix4 virtio_blk virtio_net qxl drm_kms_helper ttm drm virtio_pci virtio_ring ata_generic virtio pata_acpi CPU: 1 PID: 1121 Comm: nfsv4.1-svc Not tainted 3.19.0-rc4+ #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153950- 04/01/2014 0000000000000000 000000004e5e3f73 ffff8800b998fb48 ffffffff8186ac78 0000000000000000 ffff8800b998fba0 ffff8800b998fb88 ffffffff810ac9da ffff8800b998fb68 ffffffff81c923e7 00000000000004d9 0000000000000000 Call Trace: [<ffffffff8186ac78>] dump_stack+0x4c/0x65 [<ffffffff810ac9da>] warn_slowpath_common+0x8a/0xc0 [<ffffffff810aca65>] warn_slowpath_fmt+0x55/0x70 [<ffffffff810ff58f>] ? prepare_to_wait+0x2f/0x90 [<ffffffff810ff58f>] ? prepare_to_wait+0x2f/0x90 [<ffffffff810dd2ad>] __might_sleep+0xbd/0xd0 [<ffffffff8124c973>] kmem_cache_alloc_trace+0x243/0x430 [<ffffffff810d941e>] ? groups_alloc+0x3e/0x130 [<ffffffff810d941e>] groups_alloc+0x3e/0x130 [<ffffffffa0301b1e>] svcauth_unix_accept+0x16e/0x290 [sunrpc] [<ffffffffa0300571>] svc_authenticate+0xe1/0xf0 [sunrpc] [<ffffffffa02fc564>] svc_process_common+0x244/0x6a0 [sunrpc] [<ffffffffa02fd044>] bc_svc_process+0x1c4/0x260 [sunrpc] [<ffffffffa03d5478>] nfs41_callback_svc+0x128/0x1f0 [nfsv4] [<ffffffff810ff970>] ? wait_woken+0xc0/0xc0 [<ffffffffa03d5350>] ? nfs4_callback_svc+0x60/0x60 [nfsv4] [<ffffffff810d45bf>] kthread+0x11f/0x140 [<ffffffff810ea815>] ? local_clock+0x15/0x30 [<ffffffff810d44a0>] ? kthread_create_on_node+0x250/0x250 [<ffffffff81874bfc>] ret_from_fork+0x7c/0xb0 [<ffffffff810d44a0>] ? kthread_create_on_node+0x250/0x250 ---[ end trace 675220a11e30f4f2 ]--- nfs41_callback_svc does most of its work while in TASK_INTERRUPTIBLE, which is just wrong. Fix that by finishing the wait immediately if we've found that the list has something on it. Also, we don't expect this kthread to accept signals, so we should be using a TASK_UNINTERRUPTIBLE sleep instead. That however, opens us up hung task warnings from the watchdog, so have the schedule_timeout wake up every 60s if there's no callback activity. Reported-by:
"J. Bruce Fields" <bfields@fieldses.org> Signed-off-by:
Jeff Layton <jlayton@primarydata.com> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by:
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Jisheng Zhang authored
commit 14460dba upstream. Current code checks "clk_delay_cycles > 0" to know whether the optional "mrvl,clk_delay_cycles" is set or not. But of_property_read_u32() doesn't touch clk_delay_cycles if the property is not set. And type of clk_delay_cycles is u32, so we may always set pdata->clk_delay_cycles as a random value. This patch fix this problem by check the return value of of_property_read_u32() to know whether the optional clk-delay-cycles is set or not. Signed-off-by:
Jisheng Zhang <jszhang@marvell.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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Sumit.Saxena@avagotech.com authored
commit c2ced171 upstream. Update driver "mask_interrupts" before enable/disable hardware interrupt in order to avoid missing interrupts because of "mask_interrupts" still set to 1 and hardware interrupts are enabled. Signed-off-by:
Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by:
Chaitra Basappa <chaitra.basappa@avagotech.com> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Krzysztof Kozlowski authored
commit 478913fd upstream. The driver mismatched 'num_supplicants' with 'num_supplies' of power_supply structure. It provided list of supplicants (power_supply.supplied_to) but did not set the number of supplicants. Instead it set the num_supplies which is used when iterating over number of supplies (power_supply.supplied_from). As a result the list of supplicants was ignored by core because its size was 0. Signed-off-by:
Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: d7bf353f ("bq24190_charger: Add support for TI BQ24190 Battery Charger") Signed-off-by:
Sebastian Reichel <sre@kernel.org> Signed-off-by:
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Krzysztof Kozlowski authored
commit 24727b45 upstream. Driver forgot to unregister power supply if request_threaded_irq() failed in probe(). In such case the memory associated with power supply leaked. Signed-off-by:
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Adrian Knoth authored
commit f0153c3d upstream. RME RayDAT and AIO use a fixed buffer size of 16384 samples. With period sizes of 32-4096, this translates to 4-512 periods. The older RME cards have a variable buffer size but require exactly two periods. This patch enforces nperiods=2 on those cards. Signed-off-by:
Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Dan Carpenter authored
commit e4940626 upstream. The problem here is that we check: if (dev >= SNDRV_CARDS) Then we increment "dev". if (!joystick_port[dev++]) Then we use it as an offset into a array with SNDRV_CARDS elements. if (!request_region(joystick_port[dev], 8, "Riptide gameport")) { This has 3 effects: 1) If you use the module option to specify the joystick port then it has to be shifted one space over. 2) The wrong error message will be printed on failure if you have over 32 cards. 3) Static checkers will correctly complain that are off by one. Fixes: db1005ec ('ALSA: riptide - Fix joystick resource handling') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Malcolm Priestley authored
commit 15e1ce33 upstream. A quirk of some older firmwares that report endpoint pipe type as PIPE_BULK but the endpoint otheriwse functions as interrupt. Check if usb_endpoint_type is USB_ENDPOINT_XFER_BULK and set as usb_rcvbulkpipe. Signed-off-by:
Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by:
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Ross Lagerwall authored
commit 72978b2f upstream. Commit 61a734d3 ("xen/manage: Always freeze/thaw processes when suspend/resuming") ensured that userspace processes were always frozen before suspending to reduce interaction issues when resuming devices. However, freeze_processes() does not freeze kernel threads. Freeze kernel threads as well to prevent deadlocks with the khubd thread when resuming devices. This is what native suspend and resume does. Example deadlock: [ 7279.648010] [<ffffffff81446bde>] ? xen_poll_irq_timeout+0x3e/0x50 [ 7279.648010] [<ffffffff81448d60>] xen_poll_irq+0x10/0x20 [ 7279.648010] [<ffffffff81011723>] xen_lock_spinning+0xb3/0x120 [ 7279.648010] [<ffffffff810115d1>] __raw_callee_save_xen_lock_spinning+0x11/0x20 [ 7279.648010] [<ffffffff815620b6>] ? usb_control_msg+0xe6/0x120 [ 7279.648010] [<ffffffff81747e50>] ? _raw_spin_lock_irq+0x50/0x60 [ 7279.648010] [<ffffffff8174522c>] wait_for_completion+0xac/0x160 [ 7279.648010] [<ffffffff8109c520>] ? try_to_wake_up+0x2c0/0x2c0 [ 7279.648010] [<ffffffff814b60f2>] dpm_wait+0x32/0x40 [ 7279.648010] [<ffffffff814b6eb0>] device_resume+0x90/0x210 [ 7279.648010] [<ffffffff814b7d71>] dpm_resume+0x121/0x250 [ 7279.648010] [<ffffffff8144c570>] ? xenbus_dev_request_and_reply+0xc0/0xc0 [ 7279.648010] [<ffffffff814b80d5>] dpm_resume_end+0x15/0x30 [ 7279.648010] [<ffffffff81449fba>] do_suspend+0x10a/0x200 [ 7279.648010] [<ffffffff8144a2f0>] ? xen_pre_suspend+0x20/0x20 [ 7279.648010] [<ffffffff8144a1d0>] shutdown_handler+0x120/0x150 [ 7279.648010] [<ffffffff8144c60f>] xenwatch_thread+0x9f/0x160 [ 7279.648010] [<ffffffff810ac510>] ? finish_wait+0x80/0x80 [ 7279.648010] [<ffffffff8108d189>] kthread+0xc9/0xe0 [ 7279.648010] [<ffffffff8108d0c0>] ? flush_kthread_worker+0x80/0x80 [ 7279.648010] [<ffffffff8175087c>] ret_from_fork+0x7c/0xb0 [ 7279.648010] [<ffffffff8108d0c0>] ? flush_kthread_worker+0x80/0x80 [ 7441.216287] INFO: task khubd:89 blocked for more than 120 seconds. [ 7441.219457] Tainted: G X 3.13.11-ckt12.kz #1 [ 7441.222176] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 7441.225827] khubd D ffff88003f433440 0 89 2 0x00000000 [ 7441.229258] ffff88003ceb9b98 0000000000000046 ffff88003ce83000 0000000000013440 [ 7441.232959] ffff88003ceb9fd8 0000000000013440 ffff88003cd13000 ffff88003ce83000 [ 7441.236658] 0000000000000286 ffff88003d3e0000 ffff88003ceb9bd0 00000001001aa01e [ 7441.240415] Call Trace: [ 7441.241614] [<ffffffff817442f9>] schedule+0x29/0x70 [ 7441.243930] [<ffffffff81743406>] schedule_timeout+0x166/0x2c0 [ 7441.246681] [<ffffffff81075b80>] ? call_timer_fn+0x110/0x110 [ 7441.249339] [<ffffffff8174357e>] schedule_timeout_uninterruptible+0x1e/0x20 [ 7441.252644] [<ffffffff81077710>] msleep+0x20/0x30 [ 7441.254812] [<ffffffff81555f00>] hub_port_reset+0xf0/0x580 [ 7441.257400] [<ffffffff81558465>] hub_port_init+0x75/0xb40 [ 7441.259981] [<ffffffff814bb3c9>] ? update_autosuspend+0x39/0x60 [ 7441.262817] [<ffffffff814bb4f0>] ? pm_runtime_set_autosuspend_delay+0x50/0xa0 [ 7441.266212] [<ffffffff8155a64a>] hub_thread+0x71a/0x1750 [ 7441.268728] [<ffffffff810ac510>] ? finish_wait+0x80/0x80 [ 7441.271272] [<ffffffff81559f30>] ? usb_port_resume+0x670/0x670 [ 7441.274067] [<ffffffff8108d189>] kthread+0xc9/0xe0 [ 7441.276305] [<ffffffff8108d0c0>] ? flush_kthread_worker+0x80/0x80 [ 7441.279131] [<ffffffff8175087c>] ret_from_fork+0x7c/0xb0 [ 7441.281659] [<ffffffff8108d0c0>] ? flush_kthread_worker+0x80/0x80 Signed-off-by:
Ross Lagerwall <ross.lagerwall@citrix.com> Signed-off-by:
David Vrabel <david.vrabel@citrix.com> Signed-off-by:
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Arnd Bergmann authored
commit 61882b63 upstream. The two functions s3c2416_cpufreq_driver_init and s3c_cpufreq_register are marked init but are called from a context that might be run after the __init sections are discarded, as the compiler points out: WARNING: vmlinux.o(.data+0x1ad9dc): Section mismatch in reference from the variable s3c2416_cpufreq_driver to the function .init.text:s3c2416_cpufreq_driver_init() WARNING: drivers/built-in.o(.text+0x35b5dc): Section mismatch in reference from the function s3c2410a_cpufreq_add() to the function .init.text:s3c_cpufreq_register() This removes the __init markings. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Mikulas Patocka authored
commit d4d4eda2 upstream. On Dell Latitude C600 laptop with Pentium 3 850MHz processor, the speedstep-smi driver sometimes loads and sometimes doesn't load with "change to state X failed" message. The hardware sometimes refuses to change frequency and in this case, we need to retry later. I found out that we need to enable interrupts while waiting. When we enable interrupts, the hardware blockage that prevents frequency transition resolves and the transition is possible. With disabled interrupts, the blockage doesn't resolve (no matter how long do we wait). The exact reasons for this hardware behavior are unknown. This patch enables interrupts in the function speedstep_set_state that can be called with disabled interrupts. However, this function is called with disabled interrupts only from speedstep_get_freqs, so it shouldn't cause any problem. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com Acked-by:
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Michel Dänzer authored
commit 16b036af upstream. If the image size would ever read as 0, pci_get_rom_size() could keep processing the same image over and over again. Exit the loop if we ever read a length of zero. This fixes a soft lockup on boot when the radeon driver calls pci_get_rom_size() on an AMD Radeon R7 250X PCIe discrete graphics card. [bhelgaas: changelog, reference] Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386973Reported-by:
Federico <federicotg@gmail.com> Signed-off-by:
Michel Dänzer <michel.daenzer@amd.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Reviewed-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Ricardo Ribalda Delgado authored
commit 145b3fe5 upstream. Some implementations of modprobe fail to load the driver for a PCI device automatically because the "interface" part of the modalias from the kernel is lowercase, and the modalias from file2alias is uppercase. The "interface" is the low-order byte of the Class Code, defined in PCI r3.0, Appendix D. Most interface types defined in the spec do not use alpha characters, so they won't be affected. For example, 00h, 01h, 10h, 20h, etc. are unaffected. Print the "interface" byte of the Class Code in uppercase hex, as we already do for the Vendor ID, Device ID, Class, etc. Commit 89ec3dcf ("PCI: Generate uppercase hex for modalias interface class") fixed only half of the problem. Some udev implementations rely on the uevent file and not the modalias file. Fixes: d1ded203 ("PCI: add MODALIAS to hotplug event for pci devices") Fixes: 89ec3dcf ("PCI: Generate uppercase hex for modalias interface class") Signed-off-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Seth Forshee authored
commit 6d00f37e upstream. d1c7e29e (HID: i2c-hid: prevent buffer overflow in early IRQ) changed hid_get_input() to read ihid->bufsize bytes, which can be more than wMaxInputLength. This is the case with the Dell XPS 13 9343, and it is causing events to be missed. In some cases the missed events are releases, which can cause the cursor to jump or freeze, among other problems. Limit the number of bytes read to min(wMaxInputLength, ihid->bufsize) to prevent such problems. Fixes: d1c7e29e "HID: i2c-hid: prevent buffer overflow in early IRQ" Signed-off-by:
Seth Forshee <seth.forshee@canonical.com> Reviewed-by:
Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Luciano Coelho authored
commit 5523d11c upstream. We don't really need to use different mac colors when adding mac contexts, because they're not used anywhere. In fact, the firmware doesn't accept 255 as a valid color, so we get into a SYSASSERT 0x3401 when we reach that. Remove the color increment to use always zero and avoid reaching 255. Signed-off-by:
Luciano Coelho <luciano.coelho@intel.com> Reviewed-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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Eyal Shapira authored
commit 2cee4762 upstream. These are coming from the FW and are used to access arrays. Bad values can cause an out of bounds access so discard such ba_notifs and warn. Signed-off-by:
Eyal Shapira <eyalx.shapira@intel.com> Signed-off-by:
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Emmanuel Grumbach authored
commit cd8f4384 upstream. The base address of the scheduler in the device's memory (SRAM) comes from two different sources. The periphery register and the alive notification from the firmware. We have a check in iwl_pcie_tx_start that ensures that they are the same. When we resume from WoWLAN, the firmware may have crashed for whatever reason. In that case, the whole device may be reset which means that the periphery register will hold a meaningless value. When we come to compare trans_pcie->scd_base_addr (which really holds the value we had when we loaded the WoWLAN firmware upon suspend) and the current value of the register, we don't see a match unsurprisingly. Trick the check to avoid a loud yet harmless WARN. Note that when the WoWLAN has crashed, we will see that in iwl_trans_pcie_d3_resume which will let the op_mode know. Once the op_mode is informed that the WowLAN firmware has crashed, it can't do much besides resetting the whole device. Reviewed-by:
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Jan Kara authored
commit 6ee8e25f upstream. Commit e9fd702a ("audit: convert audit watches to use fsnotify instead of inotify") broke handling of renames in audit. Audit code wants to update inode number of an inode corresponding to watched name in a directory. When something gets renamed into a directory to a watched name, inotify previously passed moved inode to audit code however new fsnotify code passes directory inode where the change happened. That confuses audit and it starts watching parent directory instead of a file in a directory. This can be observed for example by doing: cd /tmp touch foo bar auditctl -w /tmp/foo touch foo mv bar foo touch foo In audit log we see events like: type=CONFIG_CHANGE msg=audit(1423563584.155:90): auid=1000 ses=2 op="updated rules" path="/tmp/foo" key=(null) list=4 res=1 ... type=PATH msg=audit(1423563584.155:91): item=2 name="bar" inode=1046884 dev=08:0 2 mode=0100644 ouid=0 ogid=0 rdev=00:00 nametype=DELETE type=PATH msg=audit(1423563584.155:91): item=3 name="foo" inode=1046842 dev=08:0 2 mode=0100644 ouid=0 ogid=0 rdev=00:00 nametype=DELETE type=PATH msg=audit(1423563584.155:91): item=4 name="foo" inode=1046884 dev=08:0 2 mode=0100644 ouid=0 ogid=0 rdev=00:00 nametype=CREATE ... and that's it - we see event for the first touch after creating the audit rule, we see events for rename but we don't see any event for the last touch. However we start seeing events for unrelated stuff happening in /tmp. Fix the problem by passing moved inode as data in the FS_MOVED_FROM and FS_MOVED_TO events instead of the directory where the change happens. This doesn't introduce any new problems because noone besides audit_watch.c cares about the passed value: fs/notify/fanotify/fanotify.c cares only about FSNOTIFY_EVENT_PATH events. fs/notify/dnotify/dnotify.c doesn't care about passed 'data' value at all. fs/notify/inotify/inotify_fsnotify.c uses 'data' only for FSNOTIFY_EVENT_PATH. kernel/audit_tree.c doesn't care about passed 'data' at all. kernel/audit_watch.c expects moved inode as 'data'. Fixes: e9fd702a ("audit: convert audit watches to use fsnotify instead of inotify") Signed-off-by:
Jan Kara <jack@suse.cz> Cc: Paul Moore <paul@paul-moore.com> Cc: Eric Paris <eparis@redhat.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Dave Chinner authored
commit 3443a3bc upstream. When the superblock is modified in a transaction, the commonly modified fields are not actually copied to the superblock buffer to avoid the buffer lock becoming a serialisation point. However, there are some other operations that modify the superblock fields within the transaction that don't directly log to the superblock but rely on the changes to be applied during the transaction commit (to minimise the buffer lock hold time). When we do this, we fail to mark the buffer log item as being a superblock buffer and that can lead to the buffer not being marked with the corect type in the log and hence causing recovery issues. Fix it by setting the type correctly, similar to xfs_mod_sb()... Tested-by:
Dave Chinner <dchinner@redhat.com> Reviewed-by:
Brian Foster <bfoster@redhat.com> Signed-off-by:
Dave Chinner <david@fromorbit.com> Signed-off-by:
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Dave Chinner authored
commit f19b872b upstream. This leads to log recovery throwing errors like: XFS (md0): Mounting V5 Filesystem XFS (md0): Starting recovery (logdev: internal) XFS (md0): Unknown buffer type 0! XFS (md0): _xfs_buf_ioapply: no ops on block 0xaea8802/0x1 ffff8800ffc53800: 58 41 47 49 ..... Which is the AGI buffer magic number. Ensure that we set the type appropriately in both unlink list addition and removal. Tested-by:
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Dave Chinner authored
commit 0d612fb5 upstream. Jan Kara reported that log recovery was finding buffers with invalid types in them. This should not happen, and indicates a bug in the logging of buffers. To catch this, add asserts to the buffer formatting code to ensure that the buffer type is in range when the transaction is committed. We don't set a type on buffers being marked stale - they are not going to get replayed, the format item exists only for recovery to be able to prevent replay of the buffer, so the type does not matter. Hence that needs special casing here. Reported-by:
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- 16 Feb, 2015 18 commits
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Jiri Slaby authored
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Vikas Chaudhary authored
commit 629c27aa upstream. Search for Broadcom specific ibft sign "BIFT" along with other possible values on UEFI This patch is fix for regression introduced in “935a9fee”. https://lkml.org/lkml/2011/12/16/353 This impacts Broadcom CNA for iSCSI Boot on UEFI platform. Signed-off-by:
Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by:
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Randy Wright authored
commit a4714a89 upstream. Use acpi_os_map_generic_address to pre-map the reset register if it is memory mapped, thereby preventing the BUG_ON() in line 1319 of mm/vmalloc.c from triggering during panic-triggered reboots. Link: https://bugzilla.kernel.org/show_bug.cgi?id=77131Signed-off-by:
Randy Wright <rwright@hp.com> Signed-off-by:
David E. Box <david.e.box@linux.intel.com> [rjw: Changelog, simplified code] Signed-off-by:
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James Custer authored
commit fa2a79ce upstream. In init_per_cpu(), when get_cpu_topology() fails, init_per_cpu_tunables() is not called afterwards. This means that bau_control->statp is NULL. If a user then reads /proc/sgi_uv/ptc_statistics ptc_seq_show() references a NULL pointer. Therefore, since uv_bau_init calls set_bau_off when init_per_cpu() fails, we add code that detects when the bau is off in ptc_seq_show() to avoid referencing a NULL pointer. Signed-off-by:
James Custer <jcuster@sgi.com> Cc: Russ Anderson <rja@sgi.com> Link: http://lkml.kernel.org/r/1414952199-185319-2-git-send-email-jcuster@sgi.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Eric Paris authored
commit b138004e upstream. The /sys/fs/selinux/policy file is not valid on big endian systems like ppc64 or s390. Let's see why: static int hashtab_cnt(void *key, void *data, void *ptr) { int *cnt = ptr; *cnt = *cnt + 1; return 0; } static int range_write(struct policydb *p, void *fp) { size_t nel; [...] /* count the number of entries in the hashtab */ nel = 0; rc = hashtab_map(p->range_tr, hashtab_cnt, &nel); if (rc) return rc; buf[0] = cpu_to_le32(nel); rc = put_entry(buf, sizeof(u32), 1, fp); So size_t is 64 bits. But then we pass a pointer to it as we do to hashtab_cnt. hashtab_cnt thinks it is a 32 bit int and only deals with the first 4 bytes. On x86_64 which is little endian, those first 4 bytes and the least significant, so this works out fine. On ppc64/s390 those first 4 bytes of memory are the high order bits. So at the end of the call to hashtab_map nel has a HUGE number. But the least significant 32 bits are all 0's. We then pass that 64 bit number to cpu_to_le32() which happily truncates it to a 32 bit number and does endian swapping. But the low 32 bits are all 0's. So no matter how many entries are in the hashtab, big endian systems always say there are 0 entries because I screwed up the counting. The fix is easy. Use a 32 bit int, as the hashtab_cnt expects, for nel. Signed-off-by:
Eric Paris <eparis@redhat.com> Signed-off-by:
Paul Moore <pmoore@redhat.com> Signed-off-by:
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Hannes Reinecke authored
commit 41abc4e1 upstream. When creating new devices dm_sync_table() calls synchronize_rcu_expedited(), causing _all_ pending RCU pointers to be flushed. This causes a latency overhead that is especially noticeable when creating lots of devices. And all of this is pointless as there are no old maps to be disconnected, and hence no stale pointers which would need to be cleared up. Signed-off-by:
Hannes Reinecke <hare@suse.de> Reviewed-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Jiri Slaby authored
commit 91905b6f upstream. When the parport_pc module is removed from the system, all parport devices are iterated in parport_pc_exit and removed by a call to parport_pc_unregister_port. Note that some parport devices have its 'struct device' parent, known as port->dev. And when port->dev is a platform device, it is destroyed in parport_pc_exit too. Now, when parport_pc_unregister_port is called for a going port, drv->detach(port) is called for every parport driver in the system. ppdev can be one of them. ppdev's detach() tears down its per-port sysfs directory, which established port->dev as a parent earlier. But since parport_pc_exit kills port->dev parents before unregisters ports proper, ppdev's sysfs directory has no living parent anymore. This results in the following warning: WARNING: CPU: 1 PID: 785 at fs/sysfs/group.c:219 sysfs_remove_group+0x9b/0xa0 sysfs group ffffffff81c69e20 not found for kobject 'parport1' Modules linked in: parport_pc(E-) ppdev(E) [last unloaded: ppdev] CPU: 1 PID: 785 Comm: rmmod Tainted: G W E 3.18.0-rc5-next-20141120+ #824 ... Call Trace: ... [<ffffffff810aff76>] warn_slowpath_fmt+0x46/0x50 [<ffffffff8123d81b>] sysfs_remove_group+0x9b/0xa0 [<ffffffff814c27e7>] dpm_sysfs_remove+0x57/0x60 [<ffffffff814b6ac9>] device_del+0x49/0x240 [<ffffffff814b6ce2>] device_unregister+0x22/0x70 [<ffffffff814b6dac>] device_destroy+0x3c/0x50 [<ffffffffc012209a>] pp_detach+0x4a/0x60 [ppdev] [<ffffffff814b32dd>] parport_remove_port+0x11d/0x150 [<ffffffffc0137328>] parport_pc_unregister_port+0x28/0xf0 [parport_pc] [<ffffffffc0138c0e>] parport_pc_exit+0x76/0x468 [parport_pc] [<ffffffff81128dbc>] SyS_delete_module+0x18c/0x230 It is also easily reproducible on qemu with two dummy ports '-parallel /dev/null -parallel /dev/null'. So switch the order of killing the two structures. But since port is freed by parport_pc_unregister_port, we have to remember port->dev in a local variable. Perhaps nothing worse than the warning happens thanks to the device refcounting. We *should* be on the safe side. Signed-off-by:
Martin Pluskal <mpluskal@suse.com> Signed-off-by:
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Jesse Barnes authored
commit 7bd40c16 upstream. We've always been able to use either method on VLV, but it appears more recent BIOSes only support the gen6 method, so switch over to that. References: https://bugs.freedesktop.org/show_bug.cgi?id=71370Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Jan Kara authored
commit e237ec37 upstream. Check that length specified in a component of a symlink fits in the input buffer we are reading. Also properly ignore component length for component types that do not use it. Otherwise we read memory after end of buffer for corrupted udf image. Reported-by:
Carl Henrik Lunde <chlunde@ping.uio.no> CC: stable@vger.kernel.org Signed-off-by:
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Jan Kara authored
commit 0e5cc9a4 upstream. Symlink reading code does not check whether the resulting path fits into the page provided by the generic code. This isn't as easy as just checking the symlink size because of various encoding conversions we perform on path. So we have to check whether there is still enough space in the buffer on the fly. CC: stable@vger.kernel.org Reported-by:
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Jan Kara authored
commit e159332b upstream. Verify that inode size is sane when loading inode with data stored in ICB. Otherwise we may get confused later when working with the inode and inode size is too big. CC: stable@vger.kernel.org Reported-by:
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Goldwyn Rodrigues authored
commit 86b9c6f3 upstream. Filesize is not a good indication that the file needs to be synced. An example where this breaks is: 1. Open the file in O_SYNC|O_RDWR 2. Read a small portion of the file (say 64 bytes) 3. Lseek to starting of the file 4. Write 64 bytes If the node crashes, it is not written out to disk because this was not committed in the journal and the other node which reads the file after recovery reads stale data (even if the write on the other node was successful) Signed-off-by:
Goldwyn Rodrigues <rgoldwyn@suse.de> Reviewed-by:
Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by:
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Trond Myklebust authored
commit 2fc193cf upstream. The callback handler xs_error_report() can end up propagating an EPIPE error by means of the call to xprt_wake_pending_tasks(). Ensure that xprt_connect_status() does not automatically convert this into an EIO error. Reported-by:
Weston Andros Adamson <dros@primarydata.com> Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
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Trond Myklebust authored
commit 3601c4a9 upstream. Currently, an ENOBUFS error will result in a fatal error for the RPC call. Normally, we will just want to wait and then retry. Signed-off-by:
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Steve Dickson authored
commit 1fa3e2eb upstream. Don't schedule an rpc_delay before checking to see if the task is a SOFTCONN because the tk_callback from the delay (__rpc_atrun) clears the task status before the rpc_exit_task can be run. Signed-off-by:
Steve Dickson <steved@redhat.com> Fixes: 561ec160 (SUNRPC: call_connect_status should recheck...) Link: http://lkml.kernel.org/r/5329CF7C.7090308@RedHat.comSigned-off-by:
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Trond Myklebust authored
commit 485f2251 upstream. When the server is unavailable due to a networking error, etc, we want the RPC client to respect the timeout delays when attempting to reconnect. Reported-by:
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Trond Myklebust authored
commit df277270 upstream. Ensure that call_bind_status, call_connect_status, call_transmit_status and call_status all are capable of handling ECONNABORTED and EHOSTUNREACH. Signed-off-by:
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Trond Myklebust authored
commit 0fe8d04e upstream. Currently, xprt_connect_status will convert connection error values such as ECONNREFUSED, ECONNRESET, ... into EIO, which means that they never get handled. Signed-off-by:
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