- 15 8月, 2020 26 次提交
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由 Xiaoming Ni 提交于
Since commit 61a47c1a ("sysctl: Remove the sysctl system call"), sys_sysctl is actually unavailable: any input can only return an error. We have been warning about people using the sysctl system call for years and believe there are no more users. Even if there are users of this interface if they have not complained or fixed their code by now they probably are not going to, so there is no point in warning them any longer. So completely remove sys_sysctl on all architectures. [nixiaoming@huawei.com: s390: fix build error for sys_call_table_emu] Link: http://lkml.kernel.org/r/20200618141426.16884-1-nixiaoming@huawei.comSigned-off-by: NXiaoming Ni <nixiaoming@huawei.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Acked-by: Will Deacon <will@kernel.org> [arm/arm64] Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bin Meng <bin.meng@windriver.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: chenzefeng <chenzefeng2@huawei.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christian Brauner <christian@brauner.io> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Diego Elio Pettenò <flameeyes@flameeyes.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kars de Jong <jongk@linux-m68k.org> Cc: Kees Cook <keescook@chromium.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Nick Piggin <npiggin@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Olof Johansson <olof@lixom.net> Cc: Paul Burton <paulburton@kernel.org> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Sven Schnelle <svens@stackframe.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Zhou Yanjie <zhouyanjie@wanyeetech.com> Link: http://lkml.kernel.org/r/20200616030734.87257-1-nixiaoming@huawei.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Drop duplicated words {the, at} in comments. Signed-off-by: NRandy Dunlap <rdunlap@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Acked-by: NIan Kent <raven@themaw.net> Link: http://lkml.kernel.org/r/20200811021817.24982-1-rdunlap@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
Mirroring offset_in_page(), this gives you the offset within this particular page, no matter what size page it is. It optimises down to offset_in_page() if CONFIG_TRANSPARENT_HUGEPAGE is not set. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NDavid Hildenbrand <david@redhat.com> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-8-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
This is like compound_head() but compiles away when CONFIG_TRANSPARENT_HUGEPAGE is not enabled. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-7-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
The thp prefix is more frequently used than hpage and we should be consistent between the various functions. [akpm@linux-foundation.org: fix mm/migrate.c] Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: David Hildenbrand <david@redhat.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-6-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
This function returns the number of bytes in a THP. It is like page_size(), but compiles to just PAGE_SIZE if CONFIG_TRANSPARENT_HUGEPAGE is disabled. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-5-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
This function returns the order of a transparent huge page. It compiles to 0 if CONFIG_TRANSPARENT_HUGEPAGE is disabled. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-4-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
Give up on the notion that we can remove page-flags.h from mm.h. There are currently 14 inline functions which use a PageFoo function. Also, two of the files directly included by mm.h include page-flags.h themselves, and there are probably more indirect inclusions. So just include it at the top like any other header file. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-3-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
Patch series "THP prep patches". These are some generic cleanups and improvements, which I would like merged into mmotm soon. The first one should be a performance improvement for all users of compound pages, and the others are aimed at getting code to compile away when CONFIG_TRANSPARENT_HUGEPAGE is disabled (ie small systems). Also better documented / less confusing than the current prefix mixture of compound, hpage and thp. This patch (of 7): This removes a few instructions from functions which need to know how many pages are in a compound page. The storage used is either page->mapping on 64-bit or page->index on 32-bit. Both of these are fine to overlay on tail pages. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com> Reviewed-by: NZi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-1-willy@infradead.org Link: http://lkml.kernel.org/r/20200629151959.15779-2-willy@infradead.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Greg Kurz 提交于
I had stopped using gkurz@linux.vnet.ibm.com a while back already but this email address was shutdown last June when I quit IBM. It's about time to map it to groug@kaod.org. Signed-off-by: NGreg Kurz <groug@kaod.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/159724692879.76040.4938578139173154028.stgit@bahia.lanSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kees Cook 提交于
Make sure execve() returns the expected errno values for non-regular files. Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Cc: Marc Zyngier <maz@kernel.org> Link: http://lkml.kernel.org/r/20200813231723.2725102-3-keescook@chromium.orgSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kees Cook 提交于
Patch series "Fix S_ISDIR execve() errno". Fix an errno change for execve() of directories, noticed by Marc Zyngier. Along with the fix, include a regression test to avoid seeing this return in the future. This patch (of 2): The return code for attempting to execute a directory has always been EACCES. Adjust the S_ISDIR exec test to reflect the old errno instead of the general EISDIR for other kinds of "open" attempts on directories. Fixes: 633fb6ac ("exec: move S_ISREG() check earlier") Reported-by: NMarc Zyngier <maz@kernel.org> Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Tested-by: NGreg Kroah-Hartman <gregkh@android.com> Reviewed-by: NGreg Kroah-Hartman <gregkh@google.com> Link: http://lkml.kernel.org/r/20200813231723.2725102-2-keescook@chromium.org Link: https://lore.kernel.org/lkml/20200813151305.6191993b@whySigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Nick Terrell 提交于
This patch replaces all memcpy() calls with LZ4_memcpy() which calls __builtin_memcpy() so the compiler can inline it. LZ4 relies heavily on memcpy() with a constant size being inlined. In x86 and i386 pre-boot environments memcpy() cannot be inlined because memcpy() doesn't get defined as __builtin_memcpy(). An equivalent patch has been applied upstream so that the next import won't lose this change [1]. I've measured the kernel decompression speed using QEMU before and after this patch for the x86_64 and i386 architectures. The speed-up is about 10x as shown below. Code Arch Kernel Size Time Speed v5.8 x86_64 11504832 B 148 ms 79 MB/s patch x86_64 11503872 B 13 ms 885 MB/s v5.8 i386 9621216 B 91 ms 106 MB/s patch i386 9620224 B 10 ms 962 MB/s I also measured the time to decompress the initramfs on x86_64, i386, and arm. All three show the same decompression speed before and after, as expected. [1] https://github.com/lz4/lz4/pull/890Signed-off-by: NNick Terrell <terrelln@fb.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Cc: Yann Collet <yann.collet.73@gmail.com> Cc: Gao Xiang <gaoxiang25@huawei.com> Cc: Sven Schmidt <4sschmid@informatik.uni-hamburg.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Arvind Sankar <nivedita@alum.mit.edu> Link: http://lkml.kernel.org/r/20200803194022.2966806-1-nickrterrell@gmail.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Baoquan He 提交于
This reverts commit 26e7dead. Sonny reported that one of their tests started failing on the latest kernel on their Chrome OS platform. The root cause is that the above commit removed the protection line of empty zone, while the parser used in the test relies on the protection line to mark the end of each zone. Let's revert it to avoid breaking userspace testing or applications. Fixes: 26e7dead ("mm/vmstat.c: do not show lowmem reserve protection information of empty zone)" Reported-by: NSonny Rao <sonnyrao@chromium.org> Signed-off-by: NBaoquan He <bhe@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NDavid Hildenbrand <david@redhat.com> Acked-by: NDavid Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [5.8.x] Link: http://lkml.kernel.org/r/20200811075412.12872-1-bhe@redhat.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Rapoport 提交于
The #ifdef statement that guards the generic version of pud_alloc_one() by mistake used __HAVE_ARCH_PUD_FREE instead of __HAVE_ARCH_PUD_ALLOC_ONE. Fix it. Fixes: d9e8b929 ("asm-generic: pgalloc: provide generic pud_alloc_one() and pud_free_one()") Reported-by: Nkernel test robot <lkp@intel.com> Signed-off-by: NMike Rapoport <rppt@linux.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200812191415.GE163101@linux.ibm.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull timekeeping updates from Thomas Gleixner: "A set of timekeeping/VDSO updates: - Preparatory work to allow S390 to switch over to the generic VDSO implementation. S390 requires that the VDSO data pointer is handed in to the counter read function when time namespace support is enabled. Adding the pointer is a NOOP for all other architectures because the compiler is supposed to optimize that out when it is unused in the architecture specific inline. The change also solved a similar problem for MIPS which fortunately has time namespaces not yet enabled. S390 needs to update clock related VDSO data independent of the timekeeping updates. This was solved so far with yet another sequence counter in the S390 implementation. A better solution is to utilize the already existing VDSO sequence count for this. The core code now exposes helper functions which allow to serialize against the timekeeper code and against concurrent readers. S390 needs extra data for their clock readout function. The initial common VDSO data structure did not provide a way to add that. It now has an embedded architecture specific struct embedded which defaults to an empty struct. Doing this now avoids tree dependencies and conflicts post rc1 and allows all other architectures which work on generic VDSO support to work from a common upstream base. - A trivial comment fix" * tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Delete repeated words in comments lib/vdso: Allow to add architecture-specific vdso data timekeeping/vsyscall: Provide vdso_update_begin/end() vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull more timer updates from Thomas Gleixner: "A set of posix CPU timer changes which allows to defer the heavy work of posix CPU timers into task work context. The tick interrupt is reduced to a quick check which queues the work which is doing the heavy lifting before returning to user space or going back to guest mode. Moving this out is deferring the signal delivery slightly but posix CPU timers are inaccurate by nature as they depend on the tick so there is no real damage. The relevant test cases all passed. This lifts the last offender for RT out of the hard interrupt context tick handler, but it also has the general benefit that the actual heavy work is accounted to the task/process and not to the tick interrupt itself. Further optimizations are possible to break long sighand lock hold and interrupt disabled (on !RT kernels) times when a massive amount of posix CPU timers (which are unpriviledged) is armed for a task/process. This is currently only enabled for x86 because the architecture has to ensure that task work is handled in KVM before entering a guest, which was just established for x86 with the new common entry/exit code which got merged post 5.8 and is not the case for other KVM architectures" * tag 'timers-core-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Select POSIX_CPU_TIMERS_TASK_WORK posix-cpu-timers: Provide mechanisms to defer timer handling to task_work posix-cpu-timers: Split run_posix_cpu_timers()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull irq fixes from Thomas Gleixner: "Two fixes in the core interrupt code which ensure that all error exits unlock the descriptor lock" * tag 'irq-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Unlock irq descriptor after errors genirq/PM: Always unlock IRQ descriptor in rearm_wake_irq()
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git://github.com/openrisc/linux由 Linus Torvalds 提交于
Pull OpenRISC updates from Stafford Horne: "A few patches all over the place during this cycle, mostly bug and sparse warning fixes for OpenRISC, but a few enhancements too. Note, there are 2 non OpenRISC specific fixups. Non OpenRISC fixes: - In init we need to align the init_task correctly to fix an issue with MUTEX_FLAGS, reviewed by Peter Z. No one picked this up so I kept it on my tree. - In asm-generic/io.h I fixed up some sparse warnings, OK'd by Arnd. Arnd asked to merge it via my tree. OpenRISC fixes: - Many fixes for OpenRISC sprase warnings. - Add support OpenRISC SMP tlb flushing rather than always flushing the entire TLB on every CPU. - Fix bug when dumping stack via /proc/xxx/stack of user threads" * tag 'for-linus' of git://github.com/openrisc/linux: openrisc: uaccess: Add user address space check to access_ok openrisc: signal: Fix sparse address space warnings openrisc: uaccess: Remove unused macro __addr_ok openrisc: uaccess: Use static inline function in access_ok openrisc: uaccess: Fix sparse address space warnings openrisc: io: Fixup defines and move include to the end asm-generic/io.h: Fix sparse warnings on big-endian architectures openrisc: Implement proper SMP tlb flushing openrisc: Fix oops caused when dumping stack openrisc: Add support for external initrd images init: Align init_task to avoid conflict with MUTEX_FLAGS openrisc: fix __user in raw_copy_to_user()'s prototype
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux由 Linus Torvalds 提交于
Pull powerpc fix from Michael Ellerman: "One fix for a boot crash on some platforms introduced by the recent pkey refactoring. Thanks to Christian Zigotzky and Aneesh Kumar K.V" * tag 'powerpc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000)
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip由 Linus Torvalds 提交于
Pull more xen updates from Juergen Gross: - Remove support for running as 32-bit Xen PV-guest. 32-bit PV guests are rarely used, are lacking security fixes for Meltdown, and can be easily replaced by PVH mode. Another series for doing more cleanup will follow soon (removal of 32-bit-only pvops functionality). - Fixes and additional features for the Xen display frontend driver. * tag 'for-linus-5.9-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: drm/xen-front: Pass dumb buffer data offset to the backend xen: Sync up with the canonical protocol definition in Xen drm/xen-front: Add YUYV to supported formats drm/xen-front: Fix misused IS_ERR_OR_NULL checks xen/gntdev: Fix dmabuf import with non-zero sgt offset x86/xen: drop tests for highmem in pv code x86/xen: eliminate xen-asm_64.S x86/xen: remove 32-bit Xen PV guest support
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux由 Linus Torvalds 提交于
Pull hyper-v fixes from Wei Liu: - fix oops reporting on Hyper-V - make objtool happy * tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Make hv_setup_sched_clock inline Drivers: hv: vmbus: Only notify Hyper-V for die events that are oops
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由 Eric Dumazet 提交于
syzbot found its way in 86_fsgsbase_read_task() and triggered this oops: KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 6866 Comm: syz-executor262 Not tainted 5.8.0-syzkaller #0 RIP: 0010:x86_fsgsbase_read_task+0x16d/0x310 arch/x86/kernel/process_64.c:393 Call Trace: putreg32+0x3ab/0x530 arch/x86/kernel/ptrace.c:876 genregs32_set arch/x86/kernel/ptrace.c:1026 [inline] genregs32_set+0xa4/0x100 arch/x86/kernel/ptrace.c:1006 copy_regset_from_user include/linux/regset.h:326 [inline] ia32_arch_ptrace arch/x86/kernel/ptrace.c:1061 [inline] compat_arch_ptrace+0x36c/0xd90 arch/x86/kernel/ptrace.c:1198 __do_compat_sys_ptrace kernel/ptrace.c:1420 [inline] __se_compat_sys_ptrace kernel/ptrace.c:1389 [inline] __ia32_compat_sys_ptrace+0x220/0x2f0 kernel/ptrace.c:1389 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline] __do_fast_syscall_32+0x57/0x80 arch/x86/entry/common.c:126 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c This can happen if ptrace() or sigreturn() pokes an LDT selector into FS or GS for a task with no LDT and something tries to read the base before a return to usermode notices the bad selector and fixes it. The fix is to make sure ldt pointer is not NULL. Fixes: 07e1d88a ("x86/fsgsbase/64: Fix ptrace() to read the FS/GS base accurately") Co-developed-by: NJann Horn <jannh@google.com> Signed-off-by: NEric Dumazet <edumazet@google.com> Reported-by: Nsyzbot <syzkaller@googlegroups.com> Acked-by: NAndy Lutomirski <luto@kernel.org> Cc: Chang S. Bae <chang.seok.bae@intel.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Markus T Metzger <markus.t.metzger@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Shankar <ravi.v.shankar@intel.com> Cc: Rik van Riel <riel@surriel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6由 Linus Torvalds 提交于
Pull crypto fix from Herbert Xu: "This fixes a regression in af_alg" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: algif_aead - fix uninitialized ctx->init
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux由 Linus Torvalds 提交于
Pull module updates from Jessica Yu: "The most important change would be Christoph Hellwig's patch implementing proprietary taint inheritance, in an effort to discourage the creation of GPL "shim" modules that interface between GPL symbols and proprietary symbols. Summary: - Have modules that use symbols from proprietary modules inherit the TAINT_PROPRIETARY_MODULE taint, in an effort to prevent GPL shim modules that are used to circumvent _GPL exports. These are modules that claim to be GPL licensed while also using symbols from proprietary modules. Such modules will be rejected while non-GPL modules will inherit the proprietary taint. - Module export space cleanup. Unexport symbols that are unused outside of module.c or otherwise used in only built-in code" * tag 'modules-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: modules: inherit TAINT_PROPRIETARY_MODULE modules: return licensing information from find_symbol modules: rename the licence field in struct symsearch to license modules: unexport __module_address modules: unexport __module_text_address modules: mark each_symbol_section static modules: mark find_symbol static modules: mark ref_module static modules: linux/moduleparam.h: drop duplicated word in a comment
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild由 Linus Torvalds 提交于
Pull Kconfig updates from Masahiro Yamada: - remove '---help---' keyword support - fix mouse events for 'menuconfig' symbols in search view of qconf - code cleanups of qconf * tag 'kconfig-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (24 commits) kconfig: qconf: move setOptionMode() to ConfigList from ConfigView kconfig: qconf: do not limit the pop-up menu to the first row kconfig: qconf: refactor icon setups kconfig: qconf: remove unused voidPix, menuInvPix kconfig: qconf: remove ConfigItem::text/setText kconfig: qconf: remove ConfigList::addColumn/removeColumn kconfig: qconf: remove ConfigItem::pixmap/setPixmap kconfig: qconf: drop more localization code kconfig: qconf: remove 'parent' from ConfigList::updateMenuList() kconfig: qconf: remove unused argument from ConfigView::updateList() kconfig: qconf: remove unused argument from ConfigList::updateList() kconfig: qconf: omit parent to QHBoxLayout() kconfig: qconf: remove name from ConfigSearchWindow constructor kconfig: qconf: remove unused ConfigList::listView() kconfig: qconf: overload addToolBar() to create and insert toolbar kconfig: qconf: remove toolBar from ConfigMainWindow members kconfig: qconf: use 'menu' variable for (QMenu *) kconfig: qconf: do not use 'menu' variable for (QMenuBar *) kconfig: qconf: remove ->addSeparator() to menuBar kconfig: add 'static' to some file-local data ...
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- 14 8月, 2020 14 次提交
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由 Masahiro Yamada 提交于
ConfigView::setOptionMode() only gets access to the 'list' member. Move it to the more relevant ConfigList class. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
If you right-click the first row in the option tree, the pop-up menu shows up, but if you right-click the second row or below, the event is ignored due to the following check: if (e->y() <= header()->geometry().bottom()) { Perhaps, the intention was to show the pop-menu only when the tree header was right-clicked, but this handler is not called in that case. Since the origin of e->y() starts from the bottom of the header, this check is odd. Going forward, you can right-click anywhere in the tree to get the pop-up menu. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
These icon data are used by ConfigItem, but stored in each instance of ConfigView. There is no point to keep the same data in each of 3 instances, "menu", "config", and "search". Move the icon data to the more relevant ConfigItem class, and make them static members. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
These are initialized, but not used by anyone. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
Use QTreeWidgetItem::text/setText directly Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
Use QTreeView::showColumn/hideColumn directly. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
Use QTreeWidgetItem::icon/setIcon directly. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
This is a remnant of commit 694c49a7 ("kconfig: drop localization support"). Get it back to the code prior to commit 3b9fa093 ("[PATCH] Kconfig i18n support"). Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
All the call-sites of this function pass 'this' to the first argument. So, 'parent' is always the 'this' pointer. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
Now that ConfigList::updateList() takes no argument, the 'item' argument ConfigView::updateList() is no longer used. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
This function allocates 'item' before using it, so the argument 'item' is always shadowed. Remove the meaningless argument. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
Instead of passing 0 (i.e. nullptr), leave it empty. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
This constructor is only called with "search" as the second argument. Hard-code the name in the constructor, and drop it from the function argument. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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由 Masahiro Yamada 提交于
I do not know how this function can be useful. In fact, it is unsed. Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
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