- 09 Jan, 2013 21 commits
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Alexander Kartashov authored
The current sys_mmap error analysis code doesn't work on 32-bit architectures with 3G/1G userspace/kernel virtual address space split since the syscall allocates anonymous memory above the first 2G of the address space --- such an address is a negative integer so it's interpreted as a error code. The problem isn't encountered on x86-64 becauase it doesn't use negative virtual addresses in the userspace. The 3G/1G split is used because memory allocation is currently broken for other values of the split on ARM: the value of TASK_UNMAPPED_BASE (arch/arm/include/asm/memory.h) isn't page-aligned if other split value is used so the value of the field mm_struct::mmap_base is initialized with a page-unaligned value by the function arch_pick_mmap_layout() (arch/arm/mm/mmap.c) in some circumstances that breaks page-alignment checks in the kernel memory management code. This patch modifies sys_mmap return value analysis code replacing tests for negativeness of the signed return value with tests that checks that the return value isn't greater than TASK_SIZE. Signed-off-by:
Alexander Kartashov <alekskartashov@parallels.com> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Alexander Kartashov authored
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Alexander Kartashov authored
The size of an auxv is the machine pointer but a 64-bit integer is reserved in a MmEntry protobuf message to store an auxv. Moreover the number of auxv's varies from one architecture to another. So the following is proposed to alleviate the issue. * Introduced the type auxv_t representing a machine-pointer sized integer. * The size of auxv array is extracted from a MmEntry message instead of using the value of the macro AT_VECTOR_SIZE. Signed-off-by:
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Alexander Kartashov authored
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Alexander Kartashov authored
restorer: wrapped the assembly code executed on a rt_sigreturn failure into the macro ARCH_FAIL_CORE_RESTORE. Signed-off-by:
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
include/restorer.h: moved machine-dependent sigframe structs to the file arch/x86/include/asm/restorer.h. Signed-off-by:
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
VM above TASK_SIZE is read-only but some areas are mapped on ARM into the process address space. Signed-off-by:
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Alexander Kartashov authored
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Alexander Kartashov authored
* The linker script pie/pie.lds.S is generated from the template pie/pie.lds.S.in by prepending the output architecture specification. The output architecture is defined by the variable LDARCH. * Blobs are generated by objcopy instead of ld because the ARM linker fails to produce a binary when supplied a script. (See http://lists.gnu.org/archive/html/bug-binutils/2008-10/msg00091.html). Signed-off-by:
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Alexander Kartashov authored
* The following files goes into the directory arch/x86/include/asm unmodified: - include/atomic.h, - include/linkage.h, - include/memcpy_64.h, - include/types.h, - include/bitops.h, - pie/parasite-head-x86-64.S, - include/processor-flags.h, - include/syscall-x86-64.def. * Changed include directives in the source files that include the headers listed above. * Modified build scripts to reflect the source moves. Signed-off-by:
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- 28 Dec, 2012 1 commit
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Andrey Vagin authored
Kernel started with 3.8-rc1 are not report non-existent caps in /proc/pid/status, so crtools doesn't dump/restore such caps. Signed-off-by:
Andrey Vagin <avagin@openvz.org> Signed-off-by:
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- 26 Dec, 2012 3 commits
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Cyrill Gorcunov authored
We should explicitly unlink old /dev/null instance, otherwise if such device already exist we might hit a problem as | (00.002984) 7412 fdinfo 0: pos: 0x 0 flags: 100002/0 | (00.003015) Dumping path for 0 fd via self 42 [/dev/null] | (00.003025) Error (files-reg.c:422): Unaccessible path opened 2049:109720, need 5:10 | (00.003033) Error (cr-dump.c:1565): Dump files (pid: 7412) failed with -1 Reported-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
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Pavel Emelyanov authored
It was required as a temp stub for MySQL restore. Now it just spoils the code. Signed-off-by: -
Andrey Vagin authored
tproxyd is another project. Signed-off-by:
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- 25 Dec, 2012 5 commits
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Andrey Vagin authored
gcc is executed with the option --coverage. lcov creates HTML pages containing the source code annotated with coverage information. make GCOV=1 make test make gcov Look at gcov/html/index.html v2: declare the weak __gcov_flush Signed-off-by:
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Konstantin Khlebnikov authored
syscalls-x86-64.sh: 3: syscalls-x86-64.sh: Syntax error: "(" unexpected Signed-off-by:Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by:
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Cyrill Gorcunov authored
I've just got an interesting built problem which I never saw before (and which I can't reporoduce at moment): | `.text.unlikely' referenced in section `.text' of parasite.o: defined in discarded section `.text.unlikely' of parasite.o Including sub-text sections is a good thing anyway. Signed-off-by:
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Cyrill Gorcunov authored
- fix names in comments - add empty lines where needed - fix rbtree.h - fix syscall-types.h Signed-off-by:
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Cyrill Gorcunov authored
No func changes Signed-off-by:
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- 24 Dec, 2012 1 commit
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Pavel Emelyanov authored
Make them look like __CR_<smth>_H__ with sed -e '1,2s/#\(ifndef\|define\) _\?_\?\(CR_\)\?/#\1 __CR_/' -e '1,2s/_H_\?_\?.*$/_H__/' on every header file. Signed-off-by:
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- 21 Dec, 2012 9 commits
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Andrey Vagin authored
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Andrey Vagin authored
Currently we have an array for thread_args, but leader's thread_args is a part of task_args. Here is two problems. The array has a space for leader's thread args, but it is unused. Code which fills thread args is duplicated two times. This patch fixed both problem. It replaces thread_args on a pointer from task_args and deletes code, which fills leaders thread_args. Signed-off-by:
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Andrey Vagin authored
It's preparation for the next patch. Signed-off-by:
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Andrey Vagin authored
It should be bigger than CONFIG_LSM_MMAP_MIN_ADDR. v2: set a correct value Signed-off-by:
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Cyrill Gorcunov authored
Since we supprt FPU c/r now we can run these tests. Signed-off-by:
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
This test loads ymm0/ymm7 registers and check if after restore the contents is not changed. The test requires xsave capability to present on the test system, thus if we figure out that there is no suitable cpu provided we skip the test. Signed-off-by:
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
The test for fpu transition will require to do a runtime check for the cpu features it's running on. For this sake we need to use cpuid. Thus make it more widely available by providing in the general header. The code is adopted from the linux kernel code. Signed-off-by:
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