- 06 Dec, 2014 31 commits
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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:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
Jiri Slaby <jslaby@suse.cz>
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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:
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Benjamin Herrenschmidt authored
commit 746c9e9f upstream. We have a historical hack that treats missing ranges properties as the equivalent of an empty one. This is needed for ancient PowerMac "bad" device-trees, and shouldn't be enabled for any other PowerPC platform, otherwise we get some nasty layout of devices in sysfs or even duplication when a set of otherwise identically named devices is created multiple times under a different parent node with no ranges property. This fix is needed for the PowerNV i2c busses to be exposed properly and will fix a number of other embedded cases. Signed-off-by:
Grant Likely <grant.likely@linaro.org> Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Miaoqing Pan authored
commit 4e6ce4dc upstream. Based on the reference clock, which could be 25MHz or 40MHz, AR_RTC_DERIVED_CLK is programmed differently for AR9340 and AR9550. But, when a chip reset is done, processing the initvals sets the register back to the default value. Fix this by moving the code in ath9k_hw_init_pll() to ar9003_hw_override_ini(). Also, do this override for AR9531. js: remove AR_SREV_9531 test as 9531 support is not in 3.12 yet Signed-off-by:
Miaoqing Pan <miaoqing@qca.qualcomm.com> Signed-off-by:
Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
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Takashi Iwai authored
commit ea9d0d77 upstream. DPCM can update the FE/BE connection states totally asynchronously from the FE's PCM state. Most of FE/BE state changes are protected by mutex, so that they won't race, but there are still some actions that are uncovered. For example, suppose to switch a BE while a FE's stream is running. This would call soc_dpcm_runtime_update(), which sets FE's runtime_update flag, then sets up and starts BEs, and clears FE's runtime_update flag again. When a device emits XRUN during this operation, the PCM core triggers snd_pcm_stop(XRUN). Since the trigger action is an atomic ops, this isn't blocked by the mutex, thus it kicks off DPCM's trigger action. It eventually updates and clears FE's runtime_update flag while soc_dpcm_runtime_update() is running concurrently, and it results in confusion. Usually, for avoiding such a race, we take a lock. There is a PCM stream lock for that purpose. However, as already mentioned, the trigger action is atomic, and we can't take the lock for the whole soc_dpcm_runtime_update() or other operations that include the lengthy jobs like hw_params or prepare. This patch provides an alternative solution. This adds a way to defer the conflicting trigger callback to be executed at the end of FE/BE state changes. For doing it, two things are introduced: - Each runtime_update state change of FEs is protected via PCM stream lock. - The FE's trigger callback checks the runtime_update flag. If it's not set, the trigger action is executed there. If set, mark the pending trigger action and returns immediately. - At the exit of runtime_update state change, it checks whether the pending trigger is present. If yes, it executes the trigger action at this point. Reported-and-tested-by:
Qiao Zhou <zhouqiao@marvell.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Acked-by:
Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Charles Keepax authored
commit 9da7a5a9 upstream. We should not free any buffers associated with writing out coefficients to the DSP until all the async writes have completed. This patch updates the out of memory path when allocating a new buffer to include a call to regmap_async_complete. Reported-by:
JS Park <aitdark.park@samsung.com> Signed-off-by:
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by:
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Fabio Estevam authored
commit c251ea7b upstream. On a mx28evk with a sgtl5000 codec we notice a loud 'click' sound to happen 5 seconds after the end of a playback. The SMALL_POP bit should fix this, but its definition is incorrect: according to the sgtl5000 manual it is bit 0 of CHIP_REF_CTRL register, not bit 1. Fix the definition accordingly and enable the bit as intended per the code comment. After applying this change, no loud 'click' sound is heard after playback Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
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Kuninori Morimoto authored
commit c1b9b9b1 upstream. FSI doesn't support PAUSE. Remove SNDRV_PCM_INFO_PAUSE flags from snd_pcm_hardware info Signed-off-by:
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by:
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Kuninori Morimoto authored
commit 706c6621 upstream. R-Car sound doesn't support PAUSE. Remove SNDRV_PCM_INFO_PAUSE flags from snd_pcm_hardware info Signed-off-by:
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Or Gerlitz authored
commit f57915cf upstream. This patch adds a max_send_sge=2 minimum in isert_conn_setup_qp() to ensure outgoing control PDU responses with tx_desc->num_sge=2 are able to function correctly. This addresses a bug with RDMA hardware using dev_attr.max_sge=3, that in the original code with the ConnectX-2 work-around would result in isert_conn->max_sge=1 being negotiated. Originally reported by Chris with ocrdma driver. Reported-by:
Chris Moore <Chris.Moore@emulex.com> Tested-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
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Chris Moore authored
commit b1a5ad00 upstream. isert has an issue of trying to create a CQ with more CQEs than are supported by the hardware, that currently results in failures during isert_device creation during first session login. This is the isert version of the patch that Minh Tran submitted for iser, and is simple a workaround required to function with existing ocrdma hardware. Signed-off-by:
Sagi Grimberg <sagig@mellanox.com> Signed-off-by:
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Maxime Ripard authored
commit 6bab4a8a upstream. The interrupts were activated and the handler registered before the clockevent was registered in the probe function. The interrupt handler, however, was making the assumption that the clockevent device was registered. That could cause a null pointer dereference if the timer interrupt was firing during this narrow window. Fix that by moving the clockevent registration before the interrupt is enabled. Reported-by:
Roman Byshko <rbyshko@gmail.com> Signed-off-by:
Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by:
Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by:
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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> Signed-off-by:
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Andy Lutomirski authored
commit 82975bc6 upstream. x86 call do_notify_resume on paranoid returns if TIF_UPROBE is set but not on non-paranoid returns. I suspect that this is a mistake and that the code only works because int3 is paranoid. Setting _TIF_NOTIFY_RESUME in the uprobe code was probably a workaround for the x86 bug. With that bug fixed, we can remove _TIF_NOTIFY_RESUME from the uprobes code. Reported-by:
Oleg Nesterov <oleg@redhat.com> Acked-by:
Srikar Dronamraju <srikar@linux.vnet.ibm.com> Acked-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
Andy Lutomirski <luto@amacapital.net> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Kees Cook authored
commit 45e2a9d4 upstream. When setting up permissions on kernel memory at boot, the end of the PMD that was split from bss remained executable. It should be NX like the rest. This performs a PMD alignment instead of a PAGE alignment to get the correct span of memory. Before: ---[ High Kernel Mapping ]--- ... 0xffffffff8202d000-0xffffffff82200000 1868K RW GLB NX pte 0xffffffff82200000-0xffffffff82c00000 10M RW PSE GLB NX pmd 0xffffffff82c00000-0xffffffff82df5000 2004K RW GLB NX pte 0xffffffff82df5000-0xffffffff82e00000 44K RW GLB x pte 0xffffffff82e00000-0xffffffffc0000000 978M pmd After: ---[ High Kernel Mapping ]--- ... 0xffffffff8202d000-0xffffffff82200000 1868K RW GLB NX pte 0xffffffff82200000-0xffffffff82e00000 12M RW PSE GLB NX pmd 0xffffffff82e00000-0xffffffffc0000000 978M pmd [ tglx: Changed it to roundup(_brk_end, PMD_SIZE) and added a comment. We really should unmap the reminder along with the holes caused by init,initdata etc. but thats a different issue ] Signed-off-by:
Kees Cook <keescook@chromium.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/20141114194737.GA3091@www.outflux.netSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Dave Hansen authored
commit 2cd3949f upstream. We have some very similarly named command-line options: arch/x86/kernel/cpu/common.c:__setup("noxsave", x86_xsave_setup); arch/x86/kernel/cpu/common.c:__setup("noxsaveopt", x86_xsaveopt_setup); arch/x86/kernel/cpu/common.c:__setup("noxsaves", x86_xsaves_setup); __setup() is designed to match options that take arguments, like "foo=bar" where you would have: __setup("foo", x86_foo_func...); The problem is that "noxsave" actually _matches_ "noxsaves" in the same way that "foo" matches "foo=bar". If you boot an old kernel that does not know about "noxsaves" with "noxsaves" on the command line, it will interpret the argument as "noxsave", which is not what you want at all. This makes the "noxsave" handler only return success when it finds an *exact* match. [ tglx: We really need to make __setup() more robust. ] Signed-off-by:
Dave Hansen <dave.hansen@linux.intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/20141111220133.FE053984@viggo.jf.intel.comSigned-off-by:
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Andy Lutomirski authored
commit b645af2d upstream. It's possible for iretq to userspace to fail. This can happen because of a bad CS, SS, or RIP. Historically, we've handled it by fixing up an exception from iretq to land at bad_iret, which pretends that the failed iret frame was really the hardware part of #GP(0) from userspace. To make this work, there's an extra fixup to fudge the gs base into a usable state. This is suboptimal because it loses the original exception. It's also buggy because there's no guarantee that we were on the kernel stack to begin with. For example, if the failing iret happened on return from an NMI, then we'll end up executing general_protection on the NMI stack. This is bad for several reasons, the most immediate of which is that general_protection, as a non-paranoid idtentry, will try to deliver signals and/or schedule from the wrong stack. This patch throws out bad_iret entirely. As a replacement, it augments the existing swapgs fudge into a full-blown iret fixup, mostly written in C. It's should be clearer and more correct. Signed-off-by:
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Andy Lutomirski authored
commit 6f442be2 upstream. On a 32-bit kernel, this has no effect, since there are no IST stacks. On a 64-bit kernel, #SS can only happen in user code, on a failed iret to user space, a canonical violation on access via RSP or RBP, or a genuine stack segment violation in 32-bit kernel code. The first two cases don't need IST, and the latter two cases are unlikely fatal bugs, and promoting them to double faults would be fine. This fixes a bug in which the espfix64 code mishandles a stack segment violation. This saves 4k of memory per CPU and a tiny bit of code. Signed-off-by:
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Andy Lutomirski authored
commit af726f21 upstream. There's nothing special enough about the espfix64 double fault fixup to justify writing it in assembly. Move it to C. This also fixes a bug: if the double fault came from an IST stack, the old asm code would return to a partially uninitialized stack frame. Fixes: 3891a04aSigned-off-by:
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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:
Aaro Koskinen <aaro.koskinen@iki.fi> Reported-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:
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Aaro Koskinen authored
commit bbaf113a upstream. Fix incorrect cast that always results in wrong address for the new frame on 64-bit kernels. Signed-off-by:
Aaro Koskinen <aaro.koskinen@nsn.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8110/Signed-off-by:
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Alexander Gordeev authored
commit 2adc7907 upstream. If populate_msi_sysfs() function failed msix_capability_init() must return the error code, but it returns the success instead. This update fixes the described misbehaviour. Signed-off-by:
Alexander Gordeev <agordeev@redhat.com> Signed-off-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Takashi Iwai authored
commit e4742b1e upstream. The new Lenovo T440s laptop has a different PnP ID "LEN0039", and it needs the similar min/max quirk to make its clickpad working. BugLink: https://bugzilla.opensuse.org/show_bug.cgi?id=903748Reported-and-tested-by:
Joschi Brauchle <joschibrauchle@gmx.de> Cc: <stable@vger.kernel.org> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Hans de Goede authored
commit e76aed9d upstream. https://bugzilla.redhat.com/show_bug.cgi?id=1114768 Cc: stable@vger.kernel.org Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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Benjamin Tissoires authored
commit d49cb7ae upstream. commit 421e08c4 fixed the reported min/max for the X and Y axis, but unfortunately, it broke the resolution of those same axis. On the t540p, the resolution is the same regarding X and Y. It is not a problem for xf86-input-synaptics because this driver is only interested in the ratio between X and Y. Unfortunately, xf86-input-cmt uses directly the resolution, and having a null resolution leads to some divide by 0 errors, which are translated by -infinity in the resulting coordinates. Reported-by:
Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by:
Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
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Hans de Goede authored
commit 0f68f39c upstream. Most of the affected models share pnp-ids for the touchpad. So switching to pnp-ids give us 2 advantages: 1) It shrinks the quirk list 2) It will lower the new quirk addition frequency, ie the recently added W540 quirk would not have been necessary since it uses the same LEN0034 pnp ids as other models already added before it As an added bonus it actually puts the quirk on the actual psmouse, rather then on the machine, which is technically more correct. Cc: stable@vger.kernel.org Signed-off-by:
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Hans de Goede authored
commit e2f61102 upstream. This is a preparation patch for simplifying the min/max quirk table. Cc: stable@vger.kernel.org Signed-off-by:
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Hans de Goede authored
commit 43e19888 upstream. Check PNP ID of the PS/2 AUX port and report INPUT_PROP_TOPBUTTONPAD property for for touchpads with top button areas. Signed-off-by:
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Hans de Goede authored
commit f37c0134 upstream. On some newer laptops with a trackpoint the physical buttons for the trackpoint have been removed to allow for a larger touchpad. On these laptops the buttonpad has clearly marked areas on the top which are to be used as trackpad buttons. Users of the event device-node need to know about this, so that they can properly interpret BTN_LEFT events as being a left / right / middle click depending on where on the button pad the clicking finger is. This commits adds a INPUT_PROP_TOPBUTTONPAD device property which drivers for such buttonpads will use to signal to the user that this buttonpad not only has the normal bottom button area, but also a top button area. Signed-off-by:
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Hans de Goede authored
commit a7c5868c upstream. Fill in the new serio firmware_id sysfs attribute for pnp instantiated 8042 serio ports. Signed-off-by:
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Hans de Goede authored
commit 0456c66f upstream. serio devices exposed via platform firmware interfaces such as ACPI may provide additional identifying information of use to userspace. We don't associate the serio devices with the firmware device (we don't set it as parent), so there's no way for userspace to make use of this information. We cannot change the parent for serio devices instantiated though a firmware interface as that would break suspend / resume ordering. Therefore this patch adds a new firmware_id sysfs attribute so that userspace can get a string from there with any additional identifying information the firmware interface may provide. Signed-off-by:
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- 03 Dec, 2014 7 commits
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Jiri Slaby authored
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Paolo Bonzini authored
commit c1118b36 upstream. On x86_64, kernel text mappings are mapped read-only with CONFIG_DEBUG_RODATA. In that case, KVM will fail to patch VMCALL instructions to VMMCALL as required on AMD processors. The failure mode is currently a divide-by-zero exception, which obviously is a KVM bug that has to be fixed. However, picking the right instruction between VMCALL and VMMCALL will be faster and will help if you cannot upgrade the hypervisor. Reported-by:
Chris Webb <chris@arachsys.com> Tested-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Chris J Arges <chris.j.arges@canonical.com> Signed-off-by:
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Fabian Frederick authored
commit 24e4a0f3 upstream. According to commit 5f16f322 ext4: atomically set inode->i_flags in ext4_set_inode_flags() Signed-off-by:
Fabian Frederick <fabf@skynet.be> Signed-off-by:
Dave Kleikamp <dave.kleikamp@oracle.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by:
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Theodore Ts'o authored
commit 5f16f322 upstream. Use cmpxchg() to atomically set i_flags instead of clearing out the S_IMMUTABLE, S_APPEND, etc. flags and then setting them from the EXT4_IMMUTABLE_FL, EXT4_APPEND_FL flags, since this opens up a race where an immutable file has the immutable flag cleared for a brief window of time. js: there is no change for ext4. This patch defines merely inode_set_flags for jffs in the next patch. I wonder why do we have both inode_set_flags and set_mask_bits? Looks like an improperly resolved merge conflict. Reported-by:
John Sullivan <jsrhbz@kanargh.force9.co.uk> Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org Signed-off-by:
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Qi Yong authored
commit 6d6747f8 upstream. The original minix zmap blocks calculation was correct, in the formula of: sbi->s_nzones - sbi->s_firstdatazone + 1 It is sp->s_zones - (sp->s_firstdatazone - 1) in the minix3 source code. But a later commit 016e8d44 ("fs/minix: Verify bitmap block counts before mounting") has changed it unfortunately as: sbi->s_nzones - (sbi->s_firstdatazone + 1) This would show free blocks one block less than the real when the total data blocks are in "full zmap blocks plus one". This patch corrects that zmap blocks calculation and tidy a printk message while at it. Signed-off-by:
Qi Yong <qiyong@fc-cn.com> Cc: Josh Boyer <jwboyer@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Andreas Rohner authored
commit e2c7617a upstream. Under normal circumstances nilfs_sync_fs() writes out the super block, which causes a flush of the underlying block device. But this depends on the THE_NILFS_SB_DIRTY flag, which is only set if the pointer to the last segment crosses a segment boundary. So if only a small amount of data is written before the call to nilfs_sync_fs(), no flush of the block device occurs. In the above case an additional call to blkdev_issue_flush() is needed. To prevent unnecessary overhead, the new flag nilfs->ns_flushed_device is introduced, which is cleared whenever new logs are written and set whenever the block device is flushed. For convenience the function nilfs_flush_device() is added, which contains the above logic. Signed-off-by:
Andreas Rohner <andreas.rohner@gmx.net> Signed-off-by:
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by:
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Al Viro authored
commit d311d79d upstream. It actually goes back to 2004 ([PATCH] Concurrent O_SYNC write support) when sync_page_range() had been introduced; generic_file_write{,v}() correctly synced pos_after_write - written .. pos_after_write - 1 but generic_file_aio_write() synced pos_before_write .. pos_before_write + written - 1 instead. Which is not the same thing with O_APPEND, obviously. A couple of years later correct variant had been killed off when everything switched to use of generic_file_aio_write(). All users of generic_file_aio_write() are affected, and the same bug has been copied into other instances of ->aio_write(). The fix is trivial; the only subtle point is that generic_write_sync() ought to be inlined to avoid calculations useless for the majority of calls. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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- 27 Nov, 2014 2 commits
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Jiri Bohac authored
[ Upstream commit 01462405 ] This fixes an old regression introduced by commit b0d0d915 (ipx: remove the BKL). When a recvmsg syscall blocks waiting for new data, no data can be sent on the same socket with sendmsg because ipx_recvmsg() sleeps with the socket locked. This breaks mars-nwe (NetWare emulator): - the ncpserv process reads the request using recvmsg - ncpserv forks and spawns nwconn - ncpserv calls a (blocking) recvmsg and waits for new requests - nwconn deadlocks in sendmsg on the same socket Commit b0d0d915 has simply replaced BKL locking with lock_sock/release_sock. Unlike now, BKL got unlocked while sleeping, so a blocking recvmsg did not block a concurrent sendmsg. Only keep the socket locked while actually working with the socket data and release it prior to calling skb_recv_datagram(). Signed-off-by:
Jiri Bohac <jbohac@suse.cz> Reviewed-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Mathias Krause authored
[ Upstream commit a5f6fc28 ] pptp_getname() only partially initializes the stack variable sa, particularly only fills the pptp part of the sa_addr union. The code thereby discloses 16 bytes of kernel stack memory via getsockname(). Fix this by memset(0)'ing the union before. Cc: Dmitry Kozlov <xeb@mail.ru> Signed-off-by:
Mathias Krause <minipli@googlemail.com> Signed-off-by:
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