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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-23 19:42:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-23 19:42:28 -0700
commit84787c572d402644dca4874aba73324d9f8e3948 (patch)
tree31783e50b09fee00ee7ff87c0c9708a3c7106482 /arch
parentd62a0234c87f1457a3d2ba519ef90cf164a5eb23 (diff)
parentc5d2cac0f1caaf7dd21350146fb29c55b3e74249 (diff)
downloadop-kernel-dev-84787c572d402644dca4874aba73324d9f8e3948.zip
op-kernel-dev-84787c572d402644dca4874aba73324d9f8e3948.tar.gz
Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton: - Oleg's "wait/ptrace: assume __WALL if the child is traced". It's a kernel-based workaround for existing userspace issues. - A few hotfixes - befs cleanups - nilfs2 updates - sys_wait() changes - kexec updates - kdump - scripts/gdb updates - the last of the MM queue - a few other misc things * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (84 commits) kgdb: depends on VT drm/amdgpu: make amdgpu_mn_get wait for mmap_sem killable drm/radeon: make radeon_mn_get wait for mmap_sem killable drm/i915: make i915_gem_mmap_ioctl wait for mmap_sem killable uprobes: wait for mmap_sem for write killable prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable exec: make exec path waiting for mmap_sem killable aio: make aio_setup_ring killable coredump: make coredump_wait wait for mmap_sem for write killable vdso: make arch_setup_additional_pages wait for mmap_sem for write killable ipc, shm: make shmem attach/detach wait for mmap_sem killable mm, fork: make dup_mmap wait for mmap_sem for write killable mm, proc: make clear_refs killable mm: make vm_brk killable mm, elf: handle vm_brk error mm, aout: handle vm_brk failures mm: make vm_munmap killable mm: make vm_mmap killable mm: make mmap_sem for write waits killable for mm syscalls MAINTAINERS: add co-maintainer for scripts/gdb ...
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/configs/bcm_defconfig1
-rw-r--r--arch/arm/configs/zx_defconfig1
-rw-r--r--arch/arm/kernel/process.c3
-rw-r--r--arch/arm64/kernel/vdso.c6
-rw-r--r--arch/hexagon/kernel/vdso.c3
-rw-r--r--arch/m32r/kernel/smp.c1
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/configs/db1xxx_defconfig1
-rw-r--r--arch/mips/configs/loongson3_defconfig1
-rw-r--r--arch/mips/kernel/vdso.c3
-rw-r--r--arch/mn10300/configs/asb2364_defconfig1
-rw-r--r--arch/powerpc/kernel/vdso.c3
-rw-r--r--arch/s390/kernel/machine_kexec.c28
-rw-r--r--arch/s390/kernel/vdso.c3
-rw-r--r--arch/sh/configs/apsh4ad0a_defconfig1
-rw-r--r--arch/sh/configs/sdk7786_defconfig1
-rw-r--r--arch/sh/configs/se7206_defconfig1
-rw-r--r--arch/sh/configs/shx3_defconfig1
-rw-r--r--arch/sh/configs/urquell_defconfig1
-rw-r--r--arch/sh/kernel/vsyscall/vsyscall.c4
-rw-r--r--arch/tile/configs/tilegx_defconfig1
-rw-r--r--arch/tile/configs/tilepro_defconfig1
-rw-r--r--arch/um/configs/i386_defconfig1
-rw-r--r--arch/um/configs/x86_64_defconfig1
-rw-r--r--arch/x86/configs/i386_defconfig1
-rw-r--r--arch/x86/configs/x86_64_defconfig1
-rw-r--r--arch/x86/entry/vdso/vma.c3
-rw-r--r--arch/x86/ia32/ia32_aout.c22
-rw-r--r--arch/x86/kernel/machine_kexec_64.c45
-rw-r--r--arch/x86/um/vdso/vma.c3
-rw-r--r--arch/xtensa/configs/generic_kc705_defconfig1
-rw-r--r--arch/xtensa/configs/smp_lx200_defconfig1
32 files changed, 101 insertions, 45 deletions
diff --git a/arch/arm/configs/bcm_defconfig b/arch/arm/configs/bcm_defconfig
index 7117662..909049a2 100644
--- a/arch/arm/configs/bcm_defconfig
+++ b/arch/arm/configs/bcm_defconfig
@@ -12,7 +12,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_CGROUP=y
CONFIG_NAMESPACES=y
diff --git a/arch/arm/configs/zx_defconfig b/arch/arm/configs/zx_defconfig
index ab683fb..d6253a4 100644
--- a/arch/arm/configs/zx_defconfig
+++ b/arch/arm/configs/zx_defconfig
@@ -7,7 +7,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_DEBUG=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_NAMESPACES=y
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index a647d66..4a803c5 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -420,7 +420,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
npages = 1; /* for sigpage */
npages += vdso_total_pages;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
hint = sigpage_addr(mm, npages);
addr = get_unmapped_area(NULL, hint, npages << PAGE_SHIFT, 0, 0);
if (IS_ERR_VALUE(addr)) {
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index 64fc030..9fefb00 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -95,7 +95,8 @@ int aarch32_setup_vectors_page(struct linux_binprm *bprm, int uses_interp)
};
void *ret;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
current->mm->context.vdso = (void *)addr;
/* Map vectors page at the high address. */
@@ -163,7 +164,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
/* Be sure to map the data page */
vdso_mapping_len = vdso_text_len + PAGE_SIZE;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
vdso_base = get_unmapped_area(NULL, 0, vdso_mapping_len, 0, 0);
if (IS_ERR_VALUE(vdso_base)) {
ret = ERR_PTR(vdso_base);
diff --git a/arch/hexagon/kernel/vdso.c b/arch/hexagon/kernel/vdso.c
index 0bf5a87..3ea96841 100644
--- a/arch/hexagon/kernel/vdso.c
+++ b/arch/hexagon/kernel/vdso.c
@@ -65,7 +65,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
unsigned long vdso_base;
struct mm_struct *mm = current->mm;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
/* Try to get it loaded right near ld.so/glibc. */
vdso_base = STACK_TOP;
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 62d6961..564052e 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -164,6 +164,7 @@ void smp_flush_cache_all(void)
spin_unlock(&flushcache_lock);
preempt_enable();
}
+EXPORT_SYMBOL(smp_flush_cache_all);
void smp_flush_cache_all_interrupt(void)
{
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8040fb1..4693884 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -3117,6 +3117,7 @@ config MIPS32_N32
config BINFMT_ELF32
bool
default y if MIPS32_O32 || MIPS32_N32
+ select ELFCORE
endmenu
diff --git a/arch/mips/configs/db1xxx_defconfig b/arch/mips/configs/db1xxx_defconfig
index 3bdb72a..f0c8971 100644
--- a/arch/mips/configs/db1xxx_defconfig
+++ b/arch/mips/configs/db1xxx_defconfig
@@ -18,7 +18,6 @@ CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_MEMCG_KMEM=y
diff --git a/arch/mips/configs/loongson3_defconfig b/arch/mips/configs/loongson3_defconfig
index f8bf915c..7f95c4b 100644
--- a/arch/mips/configs/loongson3_defconfig
+++ b/arch/mips/configs/loongson3_defconfig
@@ -25,7 +25,6 @@ CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CPUSETS=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_BLK_CGROUP=y
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index 975e997..54e1663 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -104,7 +104,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
struct resource gic_res;
int ret;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
/*
* Determine total area size. This includes the VDSO data itself, the
diff --git a/arch/mn10300/configs/asb2364_defconfig b/arch/mn10300/configs/asb2364_defconfig
index fbb96ae..cd0a6cb 100644
--- a/arch/mn10300/configs/asb2364_defconfig
+++ b/arch/mn10300/configs/asb2364_defconfig
@@ -11,7 +11,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_RELAY=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_EXPERT=y
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index def1b8b..6767605 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -195,7 +195,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
* and end up putting it elsewhere.
* Add enough to the size so that the result can be aligned.
*/
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
vdso_base = get_unmapped_area(NULL, vdso_base,
(vdso_pages << PAGE_SHIFT) +
((VDSO_ALIGNMENT - 1) & PAGE_MASK),
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index 2f1b721..0e64f08 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -43,13 +43,13 @@ static int machine_kdump_pm_cb(struct notifier_block *nb, unsigned long action,
switch (action) {
case PM_SUSPEND_PREPARE:
case PM_HIBERNATION_PREPARE:
- if (crashk_res.start)
- crash_map_reserved_pages();
+ if (kexec_crash_image)
+ arch_kexec_unprotect_crashkres();
break;
case PM_POST_SUSPEND:
case PM_POST_HIBERNATION:
- if (crashk_res.start)
- crash_unmap_reserved_pages();
+ if (kexec_crash_image)
+ arch_kexec_protect_crashkres();
break;
default:
return NOTIFY_DONE;
@@ -60,6 +60,8 @@ static int machine_kdump_pm_cb(struct notifier_block *nb, unsigned long action,
static int __init machine_kdump_pm_init(void)
{
pm_notifier(machine_kdump_pm_cb, 0);
+ /* Create initial mapping for crashkernel memory */
+ arch_kexec_unprotect_crashkres();
return 0;
}
arch_initcall(machine_kdump_pm_init);
@@ -146,6 +148,8 @@ static int kdump_csum_valid(struct kimage *image)
#endif
}
+#ifdef CONFIG_CRASH_DUMP
+
/*
* Map or unmap crashkernel memory
*/
@@ -167,21 +171,25 @@ static void crash_map_pages(int enable)
}
/*
- * Map crashkernel memory
+ * Unmap crashkernel memory
*/
-void crash_map_reserved_pages(void)
+void arch_kexec_protect_crashkres(void)
{
- crash_map_pages(1);
+ if (crashk_res.end)
+ crash_map_pages(0);
}
/*
- * Unmap crashkernel memory
+ * Map crashkernel memory
*/
-void crash_unmap_reserved_pages(void)
+void arch_kexec_unprotect_crashkres(void)
{
- crash_map_pages(0);
+ if (crashk_res.end)
+ crash_map_pages(1);
}
+#endif
+
/*
* Give back memory to hypervisor before new kdump is loaded
*/
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 94495ca..5904abf 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -216,7 +216,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
* it at vdso_base which is the "natural" base for it, but we might
* fail and end up putting it elsewhere.
*/
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
vdso_base = get_unmapped_area(NULL, 0, vdso_pages << PAGE_SHIFT, 0, 0);
if (IS_ERR_VALUE(vdso_base)) {
rc = vdso_base;
diff --git a/arch/sh/configs/apsh4ad0a_defconfig b/arch/sh/configs/apsh4ad0a_defconfig
index a8d9757..fe45d2c 100644
--- a/arch/sh/configs/apsh4ad0a_defconfig
+++ b/arch/sh/configs/apsh4ad0a_defconfig
@@ -10,7 +10,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_MEMCG=y
CONFIG_BLK_CGROUP=y
CONFIG_NAMESPACES=y
diff --git a/arch/sh/configs/sdk7786_defconfig b/arch/sh/configs/sdk7786_defconfig
index e7e56a4..36642ec2 100644
--- a/arch/sh/configs/sdk7786_defconfig
+++ b/arch/sh/configs/sdk7786_defconfig
@@ -17,7 +17,6 @@ CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
# CONFIG_PROC_PID_CPUSET is not set
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_MEMCG=y
CONFIG_CGROUP_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
diff --git a/arch/sh/configs/se7206_defconfig b/arch/sh/configs/se7206_defconfig
index 6bc30ab..91853a6 100644
--- a/arch/sh/configs/se7206_defconfig
+++ b/arch/sh/configs/se7206_defconfig
@@ -10,7 +10,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_DEBUG=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_MEMCG=y
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
diff --git a/arch/sh/configs/shx3_defconfig b/arch/sh/configs/shx3_defconfig
index cd6c519..4a4269a 100644
--- a/arch/sh/configs/shx3_defconfig
+++ b/arch/sh/configs/shx3_defconfig
@@ -12,7 +12,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_MEMCG=y
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
diff --git a/arch/sh/configs/urquell_defconfig b/arch/sh/configs/urquell_defconfig
index 1e843db..01c9a91 100644
--- a/arch/sh/configs/urquell_defconfig
+++ b/arch/sh/configs/urquell_defconfig
@@ -14,7 +14,6 @@ CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
# CONFIG_PROC_PID_CPUSET is not set
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_MEMCG=y
CONFIG_CGROUP_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c
index ea2aa13..cc0cc5b 100644
--- a/arch/sh/kernel/vsyscall/vsyscall.c
+++ b/arch/sh/kernel/vsyscall/vsyscall.c
@@ -64,7 +64,9 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
unsigned long addr;
int ret;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
+
addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
if (IS_ERR_VALUE(addr)) {
ret = addr;
diff --git a/arch/tile/configs/tilegx_defconfig b/arch/tile/configs/tilegx_defconfig
index dea47c3..fd122ef 100644
--- a/arch/tile/configs/tilegx_defconfig
+++ b/arch/tile/configs/tilegx_defconfig
@@ -16,7 +16,6 @@ CONFIG_CGROUP_DEBUG=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_BLK_CGROUP=y
diff --git a/arch/tile/configs/tilepro_defconfig b/arch/tile/configs/tilepro_defconfig
index 95743ee..eb6a559 100644
--- a/arch/tile/configs/tilepro_defconfig
+++ b/arch/tile/configs/tilepro_defconfig
@@ -15,7 +15,6 @@ CONFIG_CGROUP_DEBUG=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_BLK_CGROUP=y
diff --git a/arch/um/configs/i386_defconfig b/arch/um/configs/i386_defconfig
index a12bf68..5636221 100644
--- a/arch/um/configs/i386_defconfig
+++ b/arch/um/configs/i386_defconfig
@@ -17,7 +17,6 @@ CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_CGROUP=y
# CONFIG_PID_NS is not set
diff --git a/arch/um/configs/x86_64_defconfig b/arch/um/configs/x86_64_defconfig
index 3aab117..7a67b7a 100644
--- a/arch/um/configs/x86_64_defconfig
+++ b/arch/um/configs/x86_64_defconfig
@@ -15,7 +15,6 @@ CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_CGROUP=y
# CONFIG_PID_NS is not set
diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig
index 265901a..5fa6ee2 100644
--- a/arch/x86/configs/i386_defconfig
+++ b/arch/x86/configs/i386_defconfig
@@ -17,7 +17,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_DEV_INITRD=y
# CONFIG_COMPAT_BRK is not set
diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig
index 0c8d796..d28bdab 100644
--- a/arch/x86/configs/x86_64_defconfig
+++ b/arch/x86/configs/x86_64_defconfig
@@ -16,7 +16,6 @@ CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_DEV_INITRD=y
# CONFIG_COMPAT_BRK is not set
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
index b3cf813..ab220ac 100644
--- a/arch/x86/entry/vdso/vma.c
+++ b/arch/x86/entry/vdso/vma.c
@@ -163,7 +163,8 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr)
addr = 0;
}
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
addr = get_unmapped_area(NULL, addr,
image->size - image->sym_vvar_start, 0, 0);
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index ae6aad1..f5e737f 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -116,13 +116,13 @@ static struct linux_binfmt aout_format = {
.min_coredump = PAGE_SIZE
};
-static void set_brk(unsigned long start, unsigned long end)
+static unsigned long set_brk(unsigned long start, unsigned long end)
{
start = PAGE_ALIGN(start);
end = PAGE_ALIGN(end);
if (end <= start)
- return;
- vm_brk(start, end - start);
+ return start;
+ return vm_brk(start, end - start);
}
#ifdef CONFIG_COREDUMP
@@ -349,7 +349,10 @@ static int load_aout_binary(struct linux_binprm *bprm)
#endif
if (!bprm->file->f_op->mmap || (fd_offset & ~PAGE_MASK) != 0) {
- vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data);
+ error = vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data);
+ if (IS_ERR_VALUE(error))
+ return error;
+
read_code(bprm->file, N_TXTADDR(ex), fd_offset,
ex.a_text+ex.a_data);
goto beyond_if;
@@ -372,10 +375,13 @@ static int load_aout_binary(struct linux_binprm *bprm)
if (error != N_DATADDR(ex))
return error;
}
+
beyond_if:
- set_binfmt(&aout_format);
+ error = set_brk(current->mm->start_brk, current->mm->brk);
+ if (IS_ERR_VALUE(error))
+ return error;
- set_brk(current->mm->start_brk, current->mm->brk);
+ set_binfmt(&aout_format);
current->mm->start_stack =
(unsigned long)create_aout_tables((char __user *)bprm->p, bprm);
@@ -434,7 +440,9 @@ static int load_aout_library(struct file *file)
error_time = jiffies;
}
#endif
- vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss);
+ retval = vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss);
+ if (IS_ERR_VALUE(retval))
+ goto out;
read_code(file, start_addr, N_TXTOFF(ex),
ex.a_text + ex.a_data);
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index ba7fbba..5a294e4 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -538,3 +538,48 @@ overflow:
return -ENOEXEC;
}
#endif /* CONFIG_KEXEC_FILE */
+
+static int
+kexec_mark_range(unsigned long start, unsigned long end, bool protect)
+{
+ struct page *page;
+ unsigned int nr_pages;
+
+ /*
+ * For physical range: [start, end]. We must skip the unassigned
+ * crashk resource with zero-valued "end" member.
+ */
+ if (!end || start > end)
+ return 0;
+
+ page = pfn_to_page(start >> PAGE_SHIFT);
+ nr_pages = (end >> PAGE_SHIFT) - (start >> PAGE_SHIFT) + 1;
+ if (protect)
+ return set_pages_ro(page, nr_pages);
+ else
+ return set_pages_rw(page, nr_pages);
+}
+
+static void kexec_mark_crashkres(bool protect)
+{
+ unsigned long control;
+
+ kexec_mark_range(crashk_low_res.start, crashk_low_res.end, protect);
+
+ /* Don't touch the control code page used in crash_kexec().*/
+ control = PFN_PHYS(page_to_pfn(kexec_crash_image->control_code_page));
+ /* Control code page is located in the 2nd page. */
+ kexec_mark_range(crashk_res.start, control + PAGE_SIZE - 1, protect);
+ control += KEXEC_CONTROL_PAGE_SIZE;
+ kexec_mark_range(control, crashk_res.end, protect);
+}
+
+void arch_kexec_protect_crashkres(void)
+{
+ kexec_mark_crashkres(true);
+}
+
+void arch_kexec_unprotect_crashkres(void)
+{
+ kexec_mark_crashkres(false);
+}
diff --git a/arch/x86/um/vdso/vma.c b/arch/x86/um/vdso/vma.c
index 237c683..6be22f9 100644
--- a/arch/x86/um/vdso/vma.c
+++ b/arch/x86/um/vdso/vma.c
@@ -61,7 +61,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
if (!vdso_enabled)
return 0;
- down_write(&mm->mmap_sem);
+ if (down_write_killable(&mm->mmap_sem))
+ return -EINTR;
err = install_special_mapping(mm, um_vdso_addr, PAGE_SIZE,
VM_READ|VM_EXEC|
diff --git a/arch/xtensa/configs/generic_kc705_defconfig b/arch/xtensa/configs/generic_kc705_defconfig
index f4b7b38..d9444f0 100644
--- a/arch/xtensa/configs/generic_kc705_defconfig
+++ b/arch/xtensa/configs/generic_kc705_defconfig
@@ -11,7 +11,6 @@ CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
CONFIG_NAMESPACES=y
CONFIG_SCHED_AUTOGROUP=y
diff --git a/arch/xtensa/configs/smp_lx200_defconfig b/arch/xtensa/configs/smp_lx200_defconfig
index 22eeacb..61f943c 100644
--- a/arch/xtensa/configs/smp_lx200_defconfig
+++ b/arch/xtensa/configs/smp_lx200_defconfig
@@ -11,7 +11,6 @@ CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
CONFIG_NAMESPACES=y
CONFIG_SCHED_AUTOGROUP=y
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