search for: usercopy

...pe -I/home/srp/darcs/xen-64-4/xen/include -I/home/srp/darcs/xen-64-4/xen/include/asm-x86/mach-generic -I/home/srp/darcs/xen-64-4/xen/include/asm-x86/mach-default -O3 -fomit-frame-pointer -msoft-float -m64 -mno-red-zone -fpic -fno-reorder-blocks -fno-asynchronous-unwind-tables -g -DVERBOSE -c x86_64/usercopy.c -o x86_64/usercopy.o In file included from /home/srp/darcs/xen-64-4/xen/include/asm/x86_64/uaccess.h:11, from /home/srp/darcs/xen-64-4/xen/include/asm/uaccess.h:6, from x86_64/usercopy.c:10: /home/srp/darcs/xen-64-4/xen/include/asm/page.h: In function `l1e_from_p...

Hi, Fedora got a bug report on an early version of 4.13.2 https://paste.fedoraproject.org/paste/t-Yx23LN5QwJ7oPZLj3zrg [ 5.913866] usercopy: kernel memory overwrite attempt detected to (null) (<null>) (16 bytes) [ 5.914199] ------------[ cut here ]------------ [ 5.914201] kernel BUG at mm/usercopy.c:72! [ 5.914279] invalid opcode: 0000 [#1] SMP [ 5.914293] Modules linked in: ppdev joydev virtio_balloon parport...

Hi, Fedora got a bug report on an early version of 4.13.2 https://paste.fedoraproject.org/paste/t-Yx23LN5QwJ7oPZLj3zrg [ 5.913866] usercopy: kernel memory overwrite attempt detected to (null) (<null>) (16 bytes) [ 5.914199] ------------[ cut here ]------------ [ 5.914201] kernel BUG at mm/usercopy.c:72! [ 5.914279] invalid opcode: 0000 [#1] SMP [ 5.914293] Modules linked in: ppdev joydev virtio_balloon parport...

...bash CPU_CLK_UNHALT...| ...... And I can not get the detail informations such as: samples % class 11590 9.1785 arch/x86/mm.o 10967 8.6850 grant_table.o 5545 4.3912 find_domain_by_id 4953 3.9225 arch/x86/x86_32 4418 3.4987 page_alloc.o 4310 3.4132 io_apic.o 2314 1.8325 event_channel.o 1710 1.3542 usercopy.o 7817 6.1903 other 53624 42.4661 TOTAL Thanks Ares ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distri...

...) ? ~0ULL : ((1ULL<<(n))-1)) #define DMA_MASK_NONE 0x0ULL diff --git a/lib/Makefile b/lib/Makefile index 13a7c6a..92d6135 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -18,6 +18,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o +lib-$(CONFIG_HAS_DMA) += dma-noop.o lib-y += kobject.o klist.o obj-y += lockref.o diff --git a/lib/dma-noop.c b/lib/dma-noop.c new file mode 100644 index 0000000..7214564 --- /dev/null +++ b/lib/dma-noop.c @@ -0,0 +1,75 @@ +/* +...

..._regs.o argv_split.o \ proportions.o flex_proportions.o ratelimit.o show_mem.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ - earlycpio.o seq_buf.o nmi_backtrace.o + earlycpio.o seq_buf.o nmi_backtrace.o dma-noop.o obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o diff --git a/lib/dma-noop.c b/lib/dma-noop.c new file mode 100644 index 0000000..3ce31302 --- /dev/null +++ b/lib/dma-noop.c @@ -0,0 +1,77 @@ +/* + * lib/dma-noop.c + * + * Stub DMA noop-ops + */ +#include <linux/export.h> +#include <linux/mm.h> +#inclu...

...) ? ~0ULL : ((1ULL<<(n))-1)) #define DMA_MASK_NONE 0x0ULL diff --git a/lib/Makefile b/lib/Makefile index 13a7c6a..92d6135 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -18,6 +18,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o +lib-$(CONFIG_HAS_DMA) += dma-noop.o lib-y += kobject.o klist.o obj-y += lockref.o diff --git a/lib/dma-noop.c b/lib/dma-noop.c new file mode 100644 index 0000000..7214564 --- /dev/null +++ b/lib/dma-noop.c @@ -0,0 +1,75 @@ +/* +...

...e, mirror means "keep synchronized". diff --git a/mm/Makefile b/mm/Makefile index ac5e5ba78874..91c99040065c 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -102,5 +102,5 @@ obj-$(CONFIG_FRAME_VECTOR) += frame_vector.o obj-$(CONFIG_DEBUG_PAGE_REF) += debug_page_ref.o obj-$(CONFIG_HARDENED_USERCOPY) += usercopy.o obj-$(CONFIG_PERCPU_STATS) += percpu-stats.o -obj-$(CONFIG_HMM) += hmm.o +obj-$(CONFIG_HMM_MIRROR) += hmm.o obj-$(CONFIG_MEMFD_CREATE) += memfd.o diff --git a/mm/hmm.c b/mm/hmm.c index 90ca0cdab9db..d62ce64d6bca 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -25,7 +25,6 @@ #include <l...

...- select HMM select DEV_PAGEMAP_OPS help diff --git a/mm/Makefile b/mm/Makefile index ac5e5ba78874..91c99040065c 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -102,5 +102,5 @@ obj-$(CONFIG_FRAME_VECTOR) += frame_vector.o obj-$(CONFIG_DEBUG_PAGE_REF) += debug_page_ref.o obj-$(CONFIG_HARDENED_USERCOPY) += usercopy.o obj-$(CONFIG_PERCPU_STATS) += percpu-stats.o -obj-$(CONFIG_HMM) += hmm.o +obj-$(CONFIG_HMM_MIRROR) += hmm.o obj-$(CONFIG_MEMFD_CREATE) += memfd.o diff --git a/mm/hmm.c b/mm/hmm.c index 5b2e9bb6063a..8d50c482469c 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -26,7 +26,6 @@ #include <l...

Andy, to make it obvious which version is the latest, here is a branch The following changes since commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861: Linux 4.3 (2015-11-01 16:05:25 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux.git dma for you to fetch changes up to fc7f9754db6ce0c12281da4055281f731d36bdee: s390/dma: Allow

Andy, to make it obvious which version is the latest, here is a branch The following changes since commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861: Linux 4.3 (2015-11-01 16:05:25 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux.git dma for you to fetch changes up to fc7f9754db6ce0c12281da4055281f731d36bdee: s390/dma: Allow

...| 23 + xen/arch/arm/smp.c | 29 ++ xen/arch/arm/smpboot.c | 50 ++ xen/arch/arm/time.c | 181 +++++++ xen/arch/arm/traps.c | 609 ++++++++++++++++++++++++ xen/arch/arm/usercopy.c | 81 ++++ xen/arch/arm/vgic.c | 605 +++++++++++++++++++++++ xen/arch/arm/vtimer.c | 148 ++++++ xen/arch/arm/vtimer.h | 35 ++ xen/arch/arm/xen.lds.S | 141 ++++++...

Andy, this is the next and hopefully last version. Seems to work fine when replacing the previous patches in your tree. I have some reviews/acks for patch 2 and 3. patch 1 still needs one ack. Can you replace the patches in your tree and carry them along with your changes? old introduction: ----- There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use

Andy, this is the next and hopefully last version. Seems to work fine when replacing the previous patches in your tree. I have some reviews/acks for patch 2 and 3. patch 1 still needs one ack. Can you replace the patches in your tree and carry them along with your changes? old introduction: ----- There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use

...Mitigation; Clear CPU buffers; SMT disabled > >> > Vulnerability Meltdown: Mitigation; PTI > >> > Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp > >> > Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization > >> > Vulnerability Spectre v2: Mitigation; Full generic retpoline, IBPB conditional, IBRS_FW, STIBP disabled, RSB filling > >> > Vulnerability Srbds: Vulnerable: No microcode > >> > Vulnerabilit...

here is the 2nd version of providing an DMA API for s390. There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use the dma API (Andy). At kernel summit we concluded that we want to use the same code on all platforms, whereever possible, so having a dummy dma_op might be the easiest solution to keep virtio-ccw as similar as possible to

here is the 2nd version of providing an DMA API for s390. There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use the dma API (Andy). At kernel summit we concluded that we want to use the same code on all platforms, whereever possible, so having a dummy dma_op might be the easiest solution to keep virtio-ccw as similar as possible to

...uilt_in.o apic.o bitops.o compat.o delay.o dmi_scan.o domctl.o domain.o domain_build.o e820.o extable.o flushtlb.o platform_hypercall.o i387.o i8259.o io_apic.o irq.o microcode.o mm.o mpparse.o nmi.o physdev.o rwlock.o setup.o shutdown.o smp.o smpboot.o string.o sysctl.o time.o trampoline.o traps.o usercopy.o x86_emulate.o acpi/built_in.o cpu/built_in.o genapic/built_in.o hvm/built_in.o mm/built_in.o oprofile/built_in.o x86_64/built_in.o make[5]: Leaving directory `/home/test1/xen-unstable/xen/arch/x86'' gcc -O2 -fomit-frame-pointer -DNDEBUG -m64 -Wall -Wstrict-prototypes -Wdeclaration-after-s...

https://bugs.freedesktop.org/show_bug.cgi?id=91738 Bug ID: 91738 Summary: xf86-video-nouveau 1.0.11 will not allow X to start Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: major Priority: medium Component: Driver/nouveau

Removing the percpu_ida code nets over 400 lines of removal. It's not as spectacular as deleting an entire architecture, but it's still a worthy reduction in lines of code. Untested due to lack of hardware and not understanding how to set up a target platform. Changes from v1: - Fixed bugs pointed out by Jens in iscsit_wait_for_tag() - Abstracted out tag freeing as requested by Bart