[kernel] r19951 - in dists/trunk/linux: . debian debian/config/kernelarch-x86 debian/installer/ia64 debian/installer/ia64/modules/ia64 debian/patches debian/patches/bugfix/all debian/patches/bugfix/x86
Ben Hutchings
benh at alioth.debian.org
Wed Mar 27 03:51:50 UTC 2013
Author: benh
Date: Wed Mar 27 03:51:48 2013
New Revision: 19951
Log:
Merge changes from sid up to 3.2.41-2
Added:
dists/trunk/linux/debian/patches/bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch
- copied unchanged from r19950, dists/sid/linux/debian/patches/bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch
dists/trunk/linux/debian/patches/bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch
- copied, changed from r19950, dists/sid/linux/debian/patches/bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch
dists/trunk/linux/debian/patches/bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch
- copied unchanged from r19950, dists/sid/linux/debian/patches/bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch
dists/trunk/linux/debian/patches/bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch
- copied unchanged from r19950, dists/sid/linux/debian/patches/bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch
Deleted:
dists/trunk/linux/debian/installer/ia64/modules/ia64/efi-modules
Modified:
dists/trunk/linux/ (props changed)
dists/trunk/linux/debian/changelog
dists/trunk/linux/debian/config/kernelarch-x86/config
dists/trunk/linux/debian/installer/ia64/package-list
dists/trunk/linux/debian/patches/series
dists/trunk/linux/debian/rules.real
Modified: dists/trunk/linux/debian/changelog
==============================================================================
--- dists/trunk/linux/debian/changelog Tue Mar 26 05:12:03 2013 (r19950)
+++ dists/trunk/linux/debian/changelog Wed Mar 27 03:51:48 2013 (r19951)
@@ -427,6 +427,23 @@
-- Ben Hutchings <ben at decadent.org.uk> Sun, 04 Mar 2012 20:27:42 +0000
+linux (3.2.41-2) unstable; urgency=low
+
+ * [ia64] udeb: Remove efi-modules package; make kernel-image provide
+ efi-modules (fixes FTBFS)
+ * linux-headers: Fix file installation on architectures without
+ Kbuild.platforms (Closes: #703800)
+ * [x86] drm/i915: bounds check execbuffer relocation count (CVE-2013-0913)
+ * [x86] drm: Enable DRM_GMA500 as module, replacing DRM_PSB (Closes: #703506)
+ - Enable DRM_GMA600, DRM_GMA3600, DRM_MEDFIELD
+ * [x86] KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME
+ (CVE-2013-1796)
+ * [x86] KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache
+ functions (CVE-2013-1797)
+ * KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798)
+
+ -- Ben Hutchings <ben at decadent.org.uk> Mon, 25 Mar 2013 15:17:44 +0000
+
linux (3.2.41-1) unstable; urgency=low
* New upstream stable update:
Modified: dists/trunk/linux/debian/config/kernelarch-x86/config
==============================================================================
--- dists/trunk/linux/debian/config/kernelarch-x86/config Tue Mar 26 05:12:03 2013 (r19950)
+++ dists/trunk/linux/debian/config/kernelarch-x86/config Wed Mar 27 03:51:48 2013 (r19951)
@@ -450,6 +450,7 @@
CONFIG_DRM_GMA500=m
CONFIG_DRM_GMA600=y
CONFIG_DRM_GMA3600=y
+CONFIG_DRM_MEDFIELD=y
##
## file: drivers/gpu/drm/mgag200/Kconfig
Modified: dists/trunk/linux/debian/installer/ia64/package-list
==============================================================================
--- dists/trunk/linux/debian/installer/ia64/package-list Tue Mar 26 05:12:03 2013 (r19950)
+++ dists/trunk/linux/debian/installer/ia64/package-list Wed Mar 27 03:51:48 2013 (r19951)
@@ -32,3 +32,6 @@
Package: nbd-modules
Depends: kernel-image
+
+Package: kernel-image
+Provides: efi-modules
Copied: dists/trunk/linux/debian/patches/bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch (from r19950, dists/sid/linux/debian/patches/bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/trunk/linux/debian/patches/bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch Wed Mar 27 03:51:48 2013 (r19951, copy of r19950, dists/sid/linux/debian/patches/bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch)
@@ -0,0 +1,42 @@
+From: Andy Honig <ahonig at google.com>
+Date: Wed, 20 Feb 2013 14:49:16 -0800
+Subject: KVM: Fix bounds checking in ioapic indirect register reads
+ (CVE-2013-1798)
+
+commit a2c118bfab8bc6b8bb213abfc35201e441693d55 upstream.
+
+If the guest specifies a IOAPIC_REG_SELECT with an invalid value and follows
+that with a read of the IOAPIC_REG_WINDOW KVM does not properly validate
+that request. ioapic_read_indirect contains an
+ASSERT(redir_index < IOAPIC_NUM_PINS), but the ASSERT has no effect in
+non-debug builds. In recent kernels this allows a guest to cause a kernel
+oops by reading invalid memory. In older kernels (pre-3.3) this allows a
+guest to read from large ranges of host memory.
+
+Tested: tested against apic unit tests.
+
+Signed-off-by: Andrew Honig <ahonig at google.com>
+Signed-off-by: Marcelo Tosatti <mtosatti at redhat.com>
+---
+ virt/kvm/ioapic.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
+index ce82b94..5ba005c 100644
+--- a/virt/kvm/ioapic.c
++++ b/virt/kvm/ioapic.c
+@@ -74,9 +74,12 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
+ u32 redir_index = (ioapic->ioregsel - 0x10) >> 1;
+ u64 redir_content;
+
+- ASSERT(redir_index < IOAPIC_NUM_PINS);
++ if (redir_index < IOAPIC_NUM_PINS)
++ redir_content =
++ ioapic->redirtbl[redir_index].bits;
++ else
++ redir_content = ~0ULL;
+
+- redir_content = ioapic->redirtbl[redir_index].bits;
+ result = (ioapic->ioregsel & 0x1) ?
+ (redir_content >> 32) & 0xffffffff :
+ redir_content & 0xffffffff;
Copied and modified: dists/trunk/linux/debian/patches/bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch (from r19950, dists/sid/linux/debian/patches/bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch)
==============================================================================
--- dists/sid/linux/debian/patches/bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch Tue Mar 26 05:12:03 2013 (r19950, copy source)
+++ dists/trunk/linux/debian/patches/bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch Wed Mar 27 03:51:48 2013 (r19951)
@@ -17,17 +17,16 @@
Signed-off-by: Andrew Honig <ahonig at google.com>
Signed-off-by: Marcelo Tosatti <mtosatti at redhat.com>
-[bwh: Backported to 3.2:
- - Adjust context
- - We do not implement the PVCLOCK_GUEST_STOPPED flag]
---
arch/x86/include/asm/kvm_host.h | 4 ++--
arch/x86/kvm/x86.c | 47 +++++++++++++++++----------------------
2 files changed, 22 insertions(+), 29 deletions(-)
+diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
+index 635a74d..4979778 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
-@@ -393,8 +393,8 @@ struct kvm_vcpu_arch {
+@@ -414,8 +414,8 @@ struct kvm_vcpu_arch {
gpa_t time;
struct pvclock_vcpu_time_info hv_clock;
unsigned int hw_tsc_khz;
@@ -35,20 +34,26 @@
- struct page *time_page;
+ struct gfn_to_hva_cache pv_time;
+ bool pv_time_enabled;
+ /* set guest stopped flag in pvclock flags field */
+ bool pvclock_set_guest_stopped_request;
- struct {
- u64 msr_val;
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 2ade60c..f19ac0a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
-@@ -1105,7 +1105,6 @@ static int kvm_guest_time_update(struct
- {
- unsigned long flags;
+@@ -1406,10 +1406,9 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
+ unsigned long flags, this_tsc_khz;
struct kvm_vcpu_arch *vcpu = &v->arch;
+ struct kvm_arch *ka = &v->kvm->arch;
- void *shared_kaddr;
- unsigned long this_tsc_khz;
s64 kernel_ns, max_kernel_ns;
- u64 tsc_timestamp;
-@@ -1141,7 +1140,7 @@ static int kvm_guest_time_update(struct
+ u64 tsc_timestamp, host_tsc;
+- struct pvclock_vcpu_time_info *guest_hv_clock;
++ struct pvclock_vcpu_time_info guest_hv_clock;
+ u8 pvclock_flags;
+ bool use_master_clock;
+
+@@ -1463,7 +1462,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
local_irq_restore(flags);
@@ -57,16 +62,31 @@
return 0;
/*
-@@ -1199,14 +1198,9 @@ static int kvm_guest_time_update(struct
+@@ -1525,12 +1524,12 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
*/
vcpu->hv_clock.version += 2;
-- shared_kaddr = kmap_atomic(vcpu->time_page, KM_USER0);
+- shared_kaddr = kmap_atomic(vcpu->time_page);
-
+- guest_hv_clock = shared_kaddr + vcpu->time_offset;
++ if (unlikely(kvm_read_guest_cached(v->kvm, &vcpu->pv_time,
++ &guest_hv_clock, sizeof(guest_hv_clock))))
++ return 0;
+
+ /* retain PVCLOCK_GUEST_STOPPED if set in guest copy */
+- pvclock_flags = (guest_hv_clock->flags & PVCLOCK_GUEST_STOPPED);
++ pvclock_flags = (guest_hv_clock.flags & PVCLOCK_GUEST_STOPPED);
+
+ if (vcpu->pvclock_set_guest_stopped_request) {
+ pvclock_flags |= PVCLOCK_GUEST_STOPPED;
+@@ -1543,12 +1542,9 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
+
+ vcpu->hv_clock.flags = pvclock_flags;
+
- memcpy(shared_kaddr + vcpu->time_offset, &vcpu->hv_clock,
- sizeof(vcpu->hv_clock));
-
-- kunmap_atomic(shared_kaddr, KM_USER0);
+- kunmap_atomic(shared_kaddr);
-
- mark_page_dirty(v->kvm, vcpu->time >> PAGE_SHIFT);
+ kvm_write_guest_cached(v->kvm, &vcpu->pv_time,
@@ -75,7 +95,7 @@
return 0;
}
-@@ -1496,10 +1490,7 @@ static int kvm_pv_enable_async_pf(struct
+@@ -1837,10 +1833,7 @@ static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data)
static void kvmclock_reset(struct kvm_vcpu *vcpu)
{
@@ -87,7 +107,7 @@
}
static void accumulate_steal_time(struct kvm_vcpu *vcpu)
-@@ -1591,6 +1582,7 @@ int kvm_set_msr_common(struct kvm_vcpu *
+@@ -1947,6 +1940,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
break;
case MSR_KVM_SYSTEM_TIME_NEW:
case MSR_KVM_SYSTEM_TIME: {
@@ -95,7 +115,7 @@
kvmclock_reset(vcpu);
vcpu->arch.time = data;
-@@ -1600,21 +1592,17 @@ int kvm_set_msr_common(struct kvm_vcpu *
+@@ -1956,19 +1950,17 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
if (!(data & 1))
break;
@@ -112,23 +132,30 @@
- vcpu->arch.time_page =
- gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT);
-
-- if (is_error_page(vcpu->arch.time_page)) {
-- kvm_release_page_clean(vcpu->arch.time_page);
+- if (is_error_page(vcpu->arch.time_page))
- vcpu->arch.time_page = NULL;
-- }
+ if (kvm_gfn_to_hva_cache_init(vcpu->kvm,
+ &vcpu->arch.pv_time, data & ~1ULL))
+ vcpu->arch.pv_time_enabled = false;
+ else
+ vcpu->arch.pv_time_enabled = true;
+
break;
}
- case MSR_KVM_ASYNC_PF_EN:
-@@ -6559,6 +6547,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *
- if (!zalloc_cpumask_var(&vcpu->arch.wbinvd_dirty_mask, GFP_KERNEL))
- goto fail_free_mce_banks;
+@@ -2972,7 +2964,7 @@ static int kvm_vcpu_ioctl_x86_set_xcrs(struct kvm_vcpu *vcpu,
+ */
+ static int kvm_set_guest_paused(struct kvm_vcpu *vcpu)
+ {
+- if (!vcpu->arch.time_page)
++ if (!vcpu->arch.pv_time_enabled)
+ return -EINVAL;
+ vcpu->arch.pvclock_set_guest_stopped_request = true;
+ kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
+@@ -6723,6 +6715,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
+ goto fail_free_wbinvd_dirty_mask;
+ vcpu->arch.ia32_tsc_adjust_msr = 0x0;
+ vcpu->arch.pv_time_enabled = false;
kvm_async_pf_hash_reset(vcpu);
+ kvm_pmu_init(vcpu);
- return 0;
Copied: dists/trunk/linux/debian/patches/bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch (from r19950, dists/sid/linux/debian/patches/bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/trunk/linux/debian/patches/bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch Wed Mar 27 03:51:48 2013 (r19951, copy of r19950, dists/sid/linux/debian/patches/bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch)
@@ -0,0 +1,39 @@
+From: Andy Honig <ahonig at google.com>
+Date: Mon, 11 Mar 2013 09:34:52 -0700
+Subject: KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME
+ (CVE-2013-1796)
+
+commit c300aa64ddf57d9c5d9c898a64b36877345dd4a9 upstream.
+
+If the guest sets the GPA of the time_page so that the request to update the
+time straddles a page then KVM will write onto an incorrect page. The
+write is done byusing kmap atomic to get a pointer to the page for the time
+structure and then performing a memcpy to that page starting at an offset
+that the guest controls. Well behaved guests always provide a 32-byte aligned
+address, however a malicious guest could use this to corrupt host kernel
+memory.
+
+Tested: Tested against kvmclock unit test.
+
+Signed-off-by: Andrew Honig <ahonig at google.com>
+Signed-off-by: Marcelo Tosatti <mtosatti at redhat.com>
+---
+ arch/x86/kvm/x86.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index f7c850b..2ade60c 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -1959,6 +1959,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ /* ...but clean it before doing the actual write */
+ vcpu->arch.time_offset = data & ~(PAGE_MASK | 1);
+
++ /* Check that the address is 32-byte aligned. */
++ if (vcpu->arch.time_offset &
++ (sizeof(struct pvclock_vcpu_time_info) - 1))
++ break;
++
+ vcpu->arch.time_page =
+ gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT);
+
Copied: dists/trunk/linux/debian/patches/bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch (from r19950, dists/sid/linux/debian/patches/bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ dists/trunk/linux/debian/patches/bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch Wed Mar 27 03:51:48 2013 (r19951, copy of r19950, dists/sid/linux/debian/patches/bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch)
@@ -0,0 +1,49 @@
+From: Kees Cook <keescook at chromium.org>
+Date: Mon, 11 Mar 2013 17:31:45 -0700
+Subject: drm/i915: bounds check execbuffer relocation count
+
+commit 3118a4f652c7b12c752f3222af0447008f9b2368 upstream.
+
+It is possible to wrap the counter used to allocate the buffer for
+relocation copies. This could lead to heap writing overflows.
+
+CVE-2013-0913
+
+v3: collapse test, improve comment
+v2: move check into validate_exec_list
+
+Signed-off-by: Kees Cook <keescook at chromium.org>
+Reported-by: Pinkie Pie
+Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
+Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
+Signed-off-by: Ben Hutchings <ben at decadent.org.uk>
+---
+ drivers/gpu/drm/i915/i915_gem_execbuffer.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
++++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+@@ -907,15 +907,20 @@ validate_exec_list(struct drm_i915_gem_e
+ int count)
+ {
+ int i;
++ int relocs_total = 0;
++ int relocs_max = INT_MAX / sizeof(struct drm_i915_gem_relocation_entry);
+
+ for (i = 0; i < count; i++) {
+ char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr;
+ int length; /* limited by fault_in_pages_readable() */
+
+- /* First check for malicious input causing overflow */
+- if (exec[i].relocation_count >
+- INT_MAX / sizeof(struct drm_i915_gem_relocation_entry))
++ /* First check for malicious input causing overflow in
++ * the worst case where we need to allocate the entire
++ * relocation tree as a single array.
++ */
++ if (exec[i].relocation_count > relocs_max - relocs_total)
+ return -EINVAL;
++ relocs_total += exec[i].relocation_count;
+
+ length = exec[i].relocation_count *
+ sizeof(struct drm_i915_gem_relocation_entry);
Modified: dists/trunk/linux/debian/patches/series
==============================================================================
--- dists/trunk/linux/debian/patches/series Tue Mar 26 05:12:03 2013 (r19950)
+++ dists/trunk/linux/debian/patches/series Wed Mar 27 03:51:48 2013 (r19951)
@@ -88,3 +88,7 @@
bugfix/all/efivars-explicitly-calculate-length-of-VariableName.patch
bugfix/all/efivars-Handle-duplicate-names-from-get_next_variabl.patch
debian/efivars-remove-check-for-50-full-on-write.patch
+bugfix/x86/drm-i915-bounds-check-execbuffer-relocation-count.patch
+bugfix/x86/KVM-x86-fix-for-buffer-overflow-in-handling-of-MSR_K.patch
+bugfix/x86/KVM-x86-Convert-MSR_KVM_SYSTEM_TIME-to-use-gfn_to_hv.patch
+bugfix/all/KVM-Fix-bounds-checking-in-ioapic-indirect-register-.patch
Modified: dists/trunk/linux/debian/rules.real
==============================================================================
--- dists/trunk/linux/debian/rules.real Tue Mar 26 05:12:03 2013 (r19950)
+++ dists/trunk/linux/debian/rules.real Wed Mar 27 03:51:48 2013 (r19951)
@@ -196,6 +196,7 @@
mkdir -p $(OUT_DIR)
cp -a CREDITS MAINTAINERS README REPORTING-BUGS Documentation $(OUT_DIR)
rm -rf $(OUT_DIR)/Documentation/DocBook
+ set -o pipefail; \
cd $(DIR)/Documentation/DocBook; \
find * -name '*.html' -print \
| \
@@ -208,6 +209,7 @@
install-manual: DH_OPTIONS = -p$(PACKAGE_NAME)
install-manual: $(STAMPS_DIR)/build-doc
dh_prep
+ set -o pipefail; \
find $(DIR)/Documentation/DocBook/man/ -name '*.9' | xargs dh_installman
+$(MAKE_SELF) install-base GENCONTROL_ARGS='$(call DEFINE_MULTIARCH,foreign)'
@@ -229,13 +231,12 @@
dh_testroot
dh_prep
+ set -o pipefail; \
cd $(SOURCE_DIR); \
( \
echo Makefile; \
find arch/$(KERNEL_ARCH) -maxdepth 1 -name 'Makefile*' -print; \
- find arch/$(KERNEL_ARCH) -name 'module.lds' -print; \
- find arch/$(KERNEL_ARCH)/Kbuild.platforms -print; \
- find arch/$(KERNEL_ARCH) -name 'Platform' -print; \
+ find arch/$(KERNEL_ARCH) \( -name 'module.lds' -o -name 'Kbuild.platforms' -o -name 'Platform' \) -print; \
find $$(find arch/$(KERNEL_ARCH) \( -name include -o -name scripts \) -type d -print) -print; \
find include -print; \
) \
@@ -358,6 +359,7 @@
ifeq ($(MODULES),True)
+$(MAKE_CLEAN) -C $(DIR) modules_install DEPMOD='$(CURDIR)/debian/bin/no-depmod' INSTALL_MOD_PATH='$(CURDIR)'/$(PACKAGE_DIR) INSTALL_MOD_STRIP=1
ifeq ($(DEBUG),True)
+ set -o pipefail; \
find $(PACKAGE_DIR) -name '*.ko' | sed 's|$(PACKAGE_DIR)/lib/modules/$(REAL_VERSION)/kernel/||' | while read module ; do \
objcopy --add-gnu-debuglink=$(DIR)/$$module $(PACKAGE_DIR)/lib/modules/$(REAL_VERSION)/kernel/$$module || exit; \
done
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