- 06 May, 2014 36 commits
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H. Peter Anvin authored
commit b3b42ac2 upstream. The IRET instruction, when returning to a 16-bit segment, only restores the bottom 16 bits of the user space stack pointer. We have a software workaround for that ("espfix") for the 32-bit kernel, but it relies on a nonzero stack segment base which is not available in 32-bit mode. Since 16-bit support is somewhat crippled anyway on a 64-bit kernel (no V86 mode), and most (if not quite all) 64-bit processors support virtualization for the users who really need it, simply reject attempts at creating a 16-bit segment when running on top of a 64-bit kernel. Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/n/tip-kicdm89kzw9lldryb1br9od0@git.kernel.orgSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Petr Mladek authored
commit 12729f14 upstream. If a failure occurs while modifying ftrace function, it bails out and will remove the tracepoints to be back to what the code originally was. There is missing the final sync run across the CPUs after the fix up is done and before the ftrace int3 handler flag is reset. Here's the description of the problem: CPU0 CPU1 ---- ---- remove_breakpoint(); modifying_ftrace_code = 0; [still sees breakpoint] <takes trap> [sees modifying_ftrace_code as zero] [no breakpoint handler] [goto failed case] [trap exception - kernel breakpoint, no handler] BUG() Link: http://lkml.kernel.org/r/1393258342-29978-2-git-send-email-pmladek@suse.cz Fixes: 8a4d0a68 "ftrace: Use breakpoint method to update ftrace caller" Acked-by:
Frederic Weisbecker <fweisbec@gmail.com> Acked-by:
Petr Mladek <pmladek@suse.cz> Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Mark Tinguely authored
commit c88547a8 upstream. Commit f5ea1100 ("xfs: add CRCs to dir2/da node blocks") introduced in 3.10 incorrectly converted the btree hash index array pointer in xfs_da3_fixhashpath(). It resulted in the the current hash always being compared against the first entry in the btree rather than the current block index into the btree block's hash entry array. As a result, it was comparing the wrong hashes, and so could misorder the entries in the btree. For most cases, this doesn't cause any problems as it requires hash collisions to expose the ordering problem. However, when there are hash collisions within a directory there is a very good probability that the entries will be ordered incorrectly and that actually matters when duplicate hashes are placed into or removed from the btree block hash entry array. This bug results in an on-disk directory corruption and that results in directory verifier functions throwing corruption warnings into the logs. While no data or directory entries are lost, access to them may be compromised, and attempts to remove entries from a directory that has suffered from this corruption may result in a filesystem shutdown. xfs_repair will fix the directory hash ordering without data loss occuring. [dchinner: wrote useful a commit message] Reported-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
Mark Tinguely <tinguely@sgi.com> Reviewed-by:
Ben Myers <bpm@sgi.com> Signed-off-by:
Dave Chinner <david@fromorbit.com> Signed-off-by:
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Larry Finger authored
commit f764cd68 upstream. Zero-initializing ether_type masked that the ether type would never be obtained for 8021x packets and the comparison against eapol_type would always fail. Reported-by:
Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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Himangi Saraogi authored
commit abe5d64d upstream. This patch fixes the following sparse warning : drivers/staging/serqt_usb2/serqt_usb2.c:727:40: warning: restricted __le16 degrades to integer Signed-off-by:
Himangi Saraogi <himangi774@gmail.com> Signed-off-by:
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David Fries authored
commit 6b355b33 upstream. Previous logic, if (avail > 8) { store slave; return; } send data; clear; The logic error is, if there isn't space send the buffer and clear, but the slave wasn't added to the now empty buffer loosing that slave id. It also should have been "if (avail >= 8)" because when it is 8, there is space. Instead, if there isn't space send and clear the buffer, then there is always space for the slave id. Signed-off-by:
David Fries <David@Fries.net> Acked-by:
Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
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Krzysztof Kozlowski authored
commit 483e2dfd upstream. Fixes: 4aab3fad ("mfd: tps65910: Move interrupt implementation code to mfd file") tps65910_irq_init() sets 'tps65910->chip_irq' before calling regmap_add_irq_chip(). If the regmap_add_irq_chip() call fails in memory allocation of regmap_irq_chip_data members then: 1. The 'tps65910->chip_irq' will still hold some value 2. 'tps65910->irq_data' will be pointing to already freed memory (because regmap_add_irq_chip() will free it on error) This results in invalid memory access during driver remove because the tps65910_irq_exit() tests whether 'tps65910->chip_irq' is not zero. Signed-off-by:
Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Krzysztof Kozlowski authored
commit 97dc4ed3 upstream. During probe the driver allocates dummy I2C devices for RTC, haptic and MUIC with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC, haptic or MUIC devices, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit ed26f87b upstream. During probe the driver allocates dummy I2C device for RTC with i2c_new_dummy() but it does not check the return value of this call. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC device, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit 96cf3ded upstream. During probe the driver allocates dummy I2C devices for RTC and ADC with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC or ADC devices, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit ad09dd6a upstream. During probe the driver allocates dummy I2C devices for MUIC and haptic with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by devm_regmap_init_i2c() and i2c_unregister_device(). If i2c_new_dummy() fails for MUIC or haptic devices, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit b9e183a1 upstream. During probe the driver allocates dummy I2C device for RTC with i2c_new_dummy() but it does not check the return value of this call. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC device, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit a7ab1c8b upstream. During probe the driver allocates dummy I2C device for companion chip and then allocates a regmap for it. If regmap_init_i2c() fails then the I2C driver (allocated with i2c_new_dummy()) is not freed and this resource leaks. Signed-off-by:
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Krzysztof Kozlowski authored
commit 159ce52a upstream. During probe the driver allocates dummy I2C device for companion chip with i2c_new_dummy() but it does not check the return value of this call. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by regmap_init_i2c(). If i2c_new_dummy() fails for companion device, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit 65aba1e0 upstream. During probe the sec-core driver allocates dummy I2C device for RTC with i2c_new_dummy() but return value is not checked. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by devm_regmap_init_i2c() or i2c_unregister_device(). If i2c_new_dummy() fails for RTC device, fail also the probe for main MFD driver. Signed-off-by:
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Tomas Winkler authored
commit 5e6533a6 upstream. NM and SPS FW types that may run on ME device on server platforms do not have valid MEI/HECI interface and driver should not be bound to it as this might lead to system hung. In practice not all BIOSes effectively hide such devices from the OS and in some cases it is not possible. We determine FW type by examining Host FW status registers in order to unbind the driver. In this patch we are adding check for ME on Cougar Point, Lynx Point Devices Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Tested-by:
Nikola Ciprich <nikola.ciprich@linuxbox.cz> Signed-off-by:
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Sebastian Ott authored
commit 2253e8d7 upstream. ccw consoles are in use before they can be properly registered with the driver core. For devices which are in use by a device driver we rely on the ccw_device's pointer to the driver callbacks to be valid. For ccw consoles this pointer is NULL until they are registered later during boot and we dereferenced this pointer. This worked by chance on 64 bit builds (cdev->drv was NULL but the optional callback cdev->drv->path_event was also NULL by coincidence) and was unnoticed until we received reports about boot failures on 31 bit systems. Fix it by initializing the driver pointer for ccw consoles. Reported-by:
Mike Frysinger <vapier@gentoo.org> Reported-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by:
Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Kailang Yang authored
commit 7c665932 upstream. Signed-off-by:
Kailang Yang <kailang@realtek.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Takashi Iwai authored
commit 415d555e upstream. The recent fixups for HP laptops to support the mute LED made the speaker output silent on some machines. It turned out that they use the NID 0x18 for the speaker while it's also used for controlling the LED via VREF bits although the current driver code blindly assumes that such a node is a mic pin (where 0x18 is usually so). This patch fixes the problem by only changing the VREF bits and keeping the other pin ctl bits. Reported-and-tested-by:
Hui Wang <hui.wang@canonical.com> Signed-off-by:
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Takashi Iwai authored
commit 4f8e9400 upstream. PCM pointer callbacks in ice1712 driver check the buffer size boundary wrongly between bytes and frames. This leads to PCM core warnings like: snd_pcm_update_hw_ptr0: 105 callbacks suppressed ALSA pcm_lib.c:352 BUG: pcmC3D0c:0, pos = 5461, buffer size = 5461, period size = 2730 This patch fixes these checks to be placed after the proper unit conversions. Signed-off-by:
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W. Trevor King authored
commit a4b7f21d upstream. The `lspci -nnvv` output contains (wrapped for line length): 00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller [8086:1e20] (rev 04) Subsystem: ASUSTeK Computer Inc. Device [1043:115d] Signed-off-by:
W. Trevor King <wking@tremily.us> Signed-off-by:
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Laura Abbott authored
commit 9b97173e upstream. Several of the ioremap functions use unsigned long in places resulting in truncation if physical addresses greater than 4G are passed in. Change the types of the functions and the callers accordingly. Cc: Krzysztof Halasa <khc@pm.waw.pl> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by:
Laura Abbott <lauraa@codeaurora.org> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Cc: Wang Nan <wangnan0@huawei.com> Signed-off-by:
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Thomas Petazzoni authored
commit a6e03dd4 upstream. The mvmdio driver accesses some register of the Ethernet unit. It therefore takes a reference and enables a clock. However, on Armada 370/XP, no clock specification was given in the Device Tree, which leads the mvmdio driver to fail when being used as a module and loaded before the mvneta driver: it tries to access a register from a hardware unit that isn't clocked. Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1395790439-21332-2-git-send-email-thomas.petazzoni@free-electrons.comAcked-by:
Andrew Lunn <andrew@lunn.ch> Acked-by:
Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by:
Jason Cooper <jason@lakedaemon.net> Signed-off-by:
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Liu Hua authored
commit 56b700fd upstream. For vmcore generated by LPAE enabled kernel, user space utility such as crash needs additional infomation to parse. So this patch add arch_crash_save_vmcoreinfo as what PAE enabled i386 linux does. Reviewed-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Liu Hua <sdu.liu@huawei.com> Signed-off-by:
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Xiangyu Lu authored
commit 80bb3ef1 upstream. In big-endian systems, "%1" get the most significant part of the value, cause the instruction to get the wrong result. When viewing ftrace record in big-endian ARM systems, we found that the timestamp errors: swapper-0 [001] 1325.970000: 0:120:R ==> [001] 16:120:R events/1 events/1-16 [001] 1325.970000: 16:120:S ==> [001] 0:120:R swapper swapper-0 [000] 1325.1000000: 0:120:R + [000] 15:120:R events/0 swapper-0 [000] 1325.1000000: 0:120:R ==> [000] 15:120:R events/0 swapper-0 [000] 1326.030000: 0:120:R + [000] 1150:120:R sshd swapper-0 [000] 1326.030000: 0:120:R ==> [000] 1150:120:R sshd When viewed ftrace records, it will call the do_div(n, base) function, which achieved arch/arm/include/asm/div64.h in. When n = 10000000, base = 1000000, in do_div(n, base) will execute "umull %Q0, %R0, %1, %Q2". Reviewed-by:
Dave Martin <Dave.Martin@arm.com> Reviewed-by:
Nicolas Pitre <nico@linaro.org> Signed-off-by:
Alex Wu <wuquanming@huawei.com> Signed-off-by:
Xiangyu Lu <luxiangyu@huawei.com> Signed-off-by:
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Christopher Covington authored
commit 95c52fe0 upstream. The kcmp system call was ported to ARM in commit 3f7d1fe1 "ARM: 7665/1: Wire up kcmp syscall". Fixes: 3f7d1fe1 ("ARM: 7665/1: Wire up kcmp syscall") Signed-off-by:
Christopher Covington <cov@codeaurora.org> Signed-off-by:
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Will Deacon authored
commit b6ccb980 upstream. CPU_32v6 currently selects CPU_USE_DOMAINS if CPU_V6 and MMU. This is because ARM 1136 r0pX CPUs lack the v6k extensions, and therefore do not have hardware thread registers. The lack of these registers requires the kernel to update the vectors page at each context switch in order to write a new TLS pointer. This write must be done via the userspace mapping, since aliasing caches can lead to expensive flushing when using kmap. Finally, this requires the vectors page to be mapped r/w for kernel and r/o for user, which has implications for things like put_user which must trigger CoW appropriately when targetting user pages. The upshot of all this is that a v6/v7 kernel makes use of domains to segregate kernel and user memory accesses. This has the nasty side-effect of making device mappings executable, which has been observed to cause subtle bugs on recent cores (e.g. Cortex-A15 performing a speculative instruction fetch from the GIC and acking an interrupt in the process). This patch solves this problem by removing the remaining domain support from ARMv6. A new memory type is added specifically for the vectors page which allows that page (and only that page) to be mapped as user r/o, kernel r/w. All other user r/o pages are mapped also as kernel r/o. Patch co-developed with Russell King. Signed-off-by:
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Tomasz Figa authored
commit bfeda827 upstream. Apparently, if G3D regulator is powered off, the SoC cannot enter low power modes and just hangs. This patch fixes this by keeping the regulator always on when the system is running, as suggested by Exynos 4 User's Manual in case of Exynos4210/4x12 SoCs (Exynos5250 UM does not have such note, but observed behavior seems to confirm that it is true for this SoC as well). This fixes an issue preventing Arndale board from entering sleep mode observed since commit 346f372f clk: exynos5250: Add CLK_IGNORE_UNUSED flag for pmu clock that landed in kernel 3.10, which has fixed the clock driver to make the SoC actually try to enter the sleep mode. Signed-off-by:
Tomasz Figa <t.figa@samsung.com> Acked-by:
Kyungmin Park <kyungmin.park@samsung.com> Tested-by:
Tushar Behera <tushar.behera@linaro.org> Signed-off-by:
Kukjin Kim <kgene.kim@samsung.com> Signed-off-by:
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Roger Quadros authored
commit c6c56697 upstream. OMAP3 doesn't contain "l3_init_clkdm" clock domain. Use the proper clock domains for USB Host and USB TLL modules. Gets rid of the following warnings during boot omap_hwmod: usb_host_hs: could not associate to clkdm l3_init_clkdm omap_hwmod: usb_tll_hs: could not associate to clkdm l3_init_clkdm Reported-by:
Nishanth Menon <nm@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by:
Roger Quadros <rogerq@ti.com> Fixes: de231388 ("ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP3") Cc: Keshava Munegowda <keshava_mgowda@ti.com> Cc: Partha Basak <parthab@india.ti.com> Signed-off-by:
Paul Walmsley <paul@pwsan.com> Signed-off-by:
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Nishanth Menon authored
commit 07484ca3 upstream. Just like IS_PM34XX_ERRATUM, IS_PM44XX_ERRATUM is valid only if CONFIG_PM is enabled, else, disabling CONFIG_PM results in build failure complaining about the following: arch/arm/mach-omap2/built-in.o: In function `omap4_boot_secondary': :(.text+0x8a70): undefined reference to `pm44xx_errata' Fixes: c9621844 (ARM: OMAP4: PM: add errata support) Reported-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Santosh Shilimkar <santosh.shilimkar@ti.ocm> Acked-by:
Kevin Hilman <khilman@linaro.org> Signed-off-by:
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Stefan Sørensen authored
commit 698b4853 upstream. When an interrupt has become active on the INTC it will stay active until it is acked, even if masked or de-asserted. The INTC_PENDING_IRQn registers are however updated and since these are used by omap_intc_handle_irq to determine which interrupt to handle, it will never see the active interrupt. This will result in a storm of useless interrupts that is only stopped when another higher priority interrupt is asserted. Fix by sending the INTC an acknowledge if we find no interrupts to handle. Signed-off-by:
Stefan Sørensen <stefan.sorensen@spectralink.com> Signed-off-by:
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Brian Austin authored
commit 1555b652 upstream. The mask bits values were wrong for the SOC_VALUE_ENUM_SINGLE for the mono mix controls. Reported-by:
Brian Austin <brian.austin@cirrus.com> Signed-off-by:
Mark Brown <broonie@linaro.org> Signed-off-by:
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Brian Austin authored
commit d31a33dd upstream. The mask bits values were wrong for the SOC_VALUE_ENUM_SINGLE for the PCM/ADC Swap controls Reported-by:
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Brian Austin authored
commit 7272e051 upstream. The shift values for the ADC,PCM, and Analog kcontrols were wrong causing wrong values for the SOC_DOUBLE_R_SX_TLV macros Fixed the TLV for aout_tlv to show -102dB correctly Fixes: 1d99f243 (ASoC: core: Rework SOC_DOUBLE_R_SX_TLV add SOC_SINGLE_SX_TLV) Reported-by:
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Catalin Marinas authored
commit de2db743 upstream. pgprot_{dmacoherent,writecombine,noncached} don't need to generate executable mappings with side-effects like __sync_icache_dcache() being called when the mapping is in user space. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Reported-by:
Bharat Bhushan <Bharat.Bhushan@freescale.com> Tested-by:
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Catalin Marinas authored
commit 71fdb6bf upstream. Special pte mappings are not intended to be executable and do not even have an associated struct page. This patch ensures that we do not call __sync_icache_dcache() on such ptes. Signed-off-by:
Steve Capper <Steve.Capper@arm.com> Tested-by:
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- 27 Apr, 2014 4 commits
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Greg Kroah-Hartman authored
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Oleg Nesterov authored
commit c39df5fa upstream. Commit 8aac6270 ("move exit_task_namespaces() outside of exit_notify()") breaks pppd and the exiting service crashes the kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 IP: ppp_register_channel+0x13/0x20 [ppp_generic] Call Trace: ppp_asynctty_open+0x12b/0x170 [ppp_async] tty_ldisc_open.isra.2+0x27/0x60 tty_ldisc_hangup+0x1e3/0x220 __tty_hangup+0x2c4/0x440 disassociate_ctty+0x61/0x270 do_exit+0x7f2/0xa50 ppp_register_channel() needs ->net_ns and current->nsproxy == NULL. Move disassociate_ctty() before exit_task_namespaces(), it doesn't make sense to delay it after perf_event_exit_task() or cgroup_exit(). This also allows to use task_work_add() inside the (nontrivial) code paths in disassociate_ctty(). Investigated by Peter Hurley. Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Reported-by:
Sree Harsha Totakura <sreeharsha@totakura.in> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Sree Harsha Totakura <sreeharsha@totakura.in> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andrey Vagin <avagin@openvz.org> Cc: Al Viro <viro@zeniv.linux.org.uk> 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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Oleg Nesterov authored
commit dfccbb5e upstream. wait_task_zombie() first does EXIT_ZOMBIE->EXIT_DEAD transition and drops tasklist_lock. If this task is not the natural child and it is traced, we change its state back to EXIT_ZOMBIE for ->real_parent. The last transition is racy, this is even documented in 50b8d257 "ptrace: partially fix the do_wait(WEXITED) vs EXIT_DEAD->EXIT_ZOMBIE race". wait_consider_task() tries to detect this transition and clear ->notask_error but we can't rely on ptrace_reparented(), debugger can exit and do ptrace_unlink() before its sub-thread sets EXIT_ZOMBIE. And there is another problem which were missed before: this transition can also race with reparent_leader() which doesn't reset >exit_signal if EXIT_DEAD, assuming that this task must be reaped by someone else. So the tracee can be re-parented with ->exit_signal != SIGCHLD, and if /sbin/init doesn't use __WALL it becomes unreapable. Change reparent_leader() to update ->exit_signal even if EXIT_DEAD. Note: this is the simple temporary hack for -stable, it doesn't try to solve all problems, it will be reverted by the next changes. Signed-off-by:
Jan Kratochvil <jan.kratochvil@redhat.com> Reported-by:
Michal Schmidt <mschmidt@redhat.com> Tested-by:
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David S. Miller authored
[ Upstream commit cb3042d6 ] In arch_cpu_idle() we must enable %pil based interrupts before potentially invoking the hypervisor cpu yield call. As per the Hypervisor API documentation for cpu_yield: Interrupts which are blocked by some mechanism other that pstate.ie (for example %pil) are not guaranteed to cause a return from this service. It seems that only first generation Niagara chips are hit by this bug. My best guess is that later chips implement this in hardware and wake up anyways from %pil events, whereas in first generation chips the yield is implemented completely in hypervisor code and requires %pil to be enabled in order to wake properly from this call. Fixes: 87fa05ae ("sparc: Use generic idle loop") Reported-by:
Fabio M. Di Nitto <fabbione@fabbione.net> Reported-by:
Jan Engelhardt <jengelh@inai.de> Tested-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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