--- /dev/null
+From 56df90b631fc027fe28b70d41352d820797239bb Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20Wadowski?= <wadosm@gmail.com>
+Date: Tue, 14 May 2019 16:58:00 +0200
+Subject: ALSA: hda/realtek - Fix for Lenovo B50-70 inverted internal microphone bug
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Michał Wadowski <wadosm@gmail.com>
+
+commit 56df90b631fc027fe28b70d41352d820797239bb upstream.
+
+Add patch for realtek codec in Lenovo B50-70 that fixes inverted
+internal microphone channel.
+Device IdeaPad Y410P has the same PCI SSID as Lenovo B50-70,
+but first one is about fix the noise and it didn't seem help in a
+later kernel version.
+So I replaced IdeaPad Y410P device description with B50-70 and apply
+inverted microphone fix.
+
+Bugzilla: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1524215
+Signed-off-by: Michał Wadowski <wadosm@gmail.com>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ sound/pci/hda/patch_realtek.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -6550,7 +6550,7 @@ static const struct snd_pci_quirk alc269
+ SND_PCI_QUIRK(0x17aa, 0x313c, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
+ SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
+ SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
+- SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
++ SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo B50-70", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
+ SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x501a, "Thinkpad", ALC283_FIXUP_INT_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x501e, "Thinkpad L440", ALC292_FIXUP_TPT440_DOCK),
--- /dev/null
+From 57a0da28ced8707cb9f79f071a016b9d005caf5a Mon Sep 17 00:00:00 2001
+From: Lukas Czerner <lczerner@redhat.com>
+Date: Fri, 10 May 2019 21:45:33 -0400
+Subject: ext4: fix data corruption caused by overlapping unaligned and aligned IO
+
+From: Lukas Czerner <lczerner@redhat.com>
+
+commit 57a0da28ced8707cb9f79f071a016b9d005caf5a upstream.
+
+Unaligned AIO must be serialized because the zeroing of partial blocks
+of unaligned AIO can result in data corruption in case it's overlapping
+another in flight IO.
+
+Currently we wait for all unwritten extents before we submit unaligned
+AIO which protects data in case of unaligned AIO is following overlapping
+IO. However if a unaligned AIO is followed by overlapping aligned AIO we
+can still end up corrupting data.
+
+To fix this, we must make sure that the unaligned AIO is the only IO in
+flight by waiting for unwritten extents conversion not just before the
+IO submission, but right after it as well.
+
+This problem can be reproduced by xfstest generic/538
+
+Signed-off-by: Lukas Czerner <lczerner@redhat.com>
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+Cc: stable@kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/ext4/file.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/fs/ext4/file.c
++++ b/fs/ext4/file.c
+@@ -262,6 +262,13 @@ ext4_file_write_iter(struct kiocb *iocb,
+ }
+
+ ret = __generic_file_write_iter(iocb, from);
++ /*
++ * Unaligned direct AIO must be the only IO in flight. Otherwise
++ * overlapping aligned IO after unaligned might result in data
++ * corruption.
++ */
++ if (ret == -EIOCBQUEUED && unaligned_aio)
++ ext4_unwritten_wait(inode);
+ inode_unlock(inode);
+
+ if (ret > 0)
--- /dev/null
+From 08fc98a4d6424af66eb3ac4e2cedd2fc927ed436 Mon Sep 17 00:00:00 2001
+From: Sahitya Tummala <stummala@codeaurora.org>
+Date: Fri, 10 May 2019 22:00:33 -0400
+Subject: ext4: fix use-after-free in dx_release()
+
+From: Sahitya Tummala <stummala@codeaurora.org>
+
+commit 08fc98a4d6424af66eb3ac4e2cedd2fc927ed436 upstream.
+
+The buffer_head (frames[0].bh) and it's corresping page can be
+potentially free'd once brelse() is done inside the for loop
+but before the for loop exits in dx_release(). It can be free'd
+in another context, when the page cache is flushed via
+drop_caches_sysctl_handler(). This results into below data abort
+when accessing info->indirect_levels in dx_release().
+
+Unable to handle kernel paging request at virtual address ffffffc17ac3e01e
+Call trace:
+ dx_release+0x70/0x90
+ ext4_htree_fill_tree+0x2d4/0x300
+ ext4_readdir+0x244/0x6f8
+ iterate_dir+0xbc/0x160
+ SyS_getdents64+0x94/0x174
+
+Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+Reviewed-by: Andreas Dilger <adilger@dilger.ca>
+Cc: stable@kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/ext4/namei.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+--- a/fs/ext4/namei.c
++++ b/fs/ext4/namei.c
+@@ -870,12 +870,15 @@ static void dx_release(struct dx_frame *
+ {
+ struct dx_root_info *info;
+ int i;
++ unsigned int indirect_levels;
+
+ if (frames[0].bh == NULL)
+ return;
+
+ info = &((struct dx_root *)frames[0].bh->b_data)->info;
+- for (i = 0; i <= info->indirect_levels; i++) {
++ /* save local copy, "info" may be freed after brelse() */
++ indirect_levels = info->indirect_levels;
++ for (i = 0; i <= indirect_levels; i++) {
+ if (frames[i].bh == NULL)
+ break;
+ brelse(frames[i].bh);
--- /dev/null
+From 592acbf16821288ecdc4192c47e3774a4c48bb64 Mon Sep 17 00:00:00 2001
+From: Sriram Rajagopalan <sriramr@arista.com>
+Date: Fri, 10 May 2019 19:28:06 -0400
+Subject: ext4: zero out the unused memory region in the extent tree block
+
+From: Sriram Rajagopalan <sriramr@arista.com>
+
+commit 592acbf16821288ecdc4192c47e3774a4c48bb64 upstream.
+
+This commit zeroes out the unused memory region in the buffer_head
+corresponding to the extent metablock after writing the extent header
+and the corresponding extent node entries.
+
+This is done to prevent random uninitialized data from getting into
+the filesystem when the extent block is synced.
+
+This fixes CVE-2019-11833.
+
+Signed-off-by: Sriram Rajagopalan <sriramr@arista.com>
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+Cc: stable@kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/ext4/extents.c | 17 +++++++++++++++--
+ 1 file changed, 15 insertions(+), 2 deletions(-)
+
+--- a/fs/ext4/extents.c
++++ b/fs/ext4/extents.c
+@@ -1047,6 +1047,7 @@ static int ext4_ext_split(handle_t *hand
+ __le32 border;
+ ext4_fsblk_t *ablocks = NULL; /* array of allocated blocks */
+ int err = 0;
++ size_t ext_size = 0;
+
+ /* make decision: where to split? */
+ /* FIXME: now decision is simplest: at current extent */
+@@ -1138,6 +1139,10 @@ static int ext4_ext_split(handle_t *hand
+ le16_add_cpu(&neh->eh_entries, m);
+ }
+
++ /* zero out unused area in the extent block */
++ ext_size = sizeof(struct ext4_extent_header) +
++ sizeof(struct ext4_extent) * le16_to_cpu(neh->eh_entries);
++ memset(bh->b_data + ext_size, 0, inode->i_sb->s_blocksize - ext_size);
+ ext4_extent_block_csum_set(inode, neh);
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+@@ -1217,6 +1222,11 @@ static int ext4_ext_split(handle_t *hand
+ sizeof(struct ext4_extent_idx) * m);
+ le16_add_cpu(&neh->eh_entries, m);
+ }
++ /* zero out unused area in the extent block */
++ ext_size = sizeof(struct ext4_extent_header) +
++ (sizeof(struct ext4_extent) * le16_to_cpu(neh->eh_entries));
++ memset(bh->b_data + ext_size, 0,
++ inode->i_sb->s_blocksize - ext_size);
+ ext4_extent_block_csum_set(inode, neh);
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+@@ -1282,6 +1292,7 @@ static int ext4_ext_grow_indepth(handle_
+ ext4_fsblk_t newblock, goal = 0;
+ struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
+ int err = 0;
++ size_t ext_size = 0;
+
+ /* Try to prepend new index to old one */
+ if (ext_depth(inode))
+@@ -1307,9 +1318,11 @@ static int ext4_ext_grow_indepth(handle_
+ goto out;
+ }
+
++ ext_size = sizeof(EXT4_I(inode)->i_data);
+ /* move top-level index/leaf into new block */
+- memmove(bh->b_data, EXT4_I(inode)->i_data,
+- sizeof(EXT4_I(inode)->i_data));
++ memmove(bh->b_data, EXT4_I(inode)->i_data, ext_size);
++ /* zero out unused area in the extent block */
++ memset(bh->b_data + ext_size, 0, inode->i_sb->s_blocksize - ext_size);
+
+ /* set size of new block */
+ neh = ext_block_hdr(bh);
--- /dev/null
+From ec084de929e419e51bcdafaafe567d9e7d0273b7 Mon Sep 17 00:00:00 2001
+From: Jiufei Xue <jiufei.xue@linux.alibaba.com>
+Date: Fri, 17 May 2019 14:31:44 -0700
+Subject: fs/writeback.c: use rcu_barrier() to wait for inflight wb switches going into workqueue when umount
+
+From: Jiufei Xue <jiufei.xue@linux.alibaba.com>
+
+commit ec084de929e419e51bcdafaafe567d9e7d0273b7 upstream.
+
+synchronize_rcu() didn't wait for call_rcu() callbacks, so inode wb
+switch may not go to the workqueue after synchronize_rcu(). Thus
+previous scheduled switches was not finished even flushing the
+workqueue, which will cause a NULL pointer dereferenced followed below.
+
+ VFS: Busy inodes after unmount of vdd. Self-destruct in 5 seconds. Have a nice day...
+ BUG: unable to handle kernel NULL pointer dereference at 0000000000000278
+ evict+0xb3/0x180
+ iput+0x1b0/0x230
+ inode_switch_wbs_work_fn+0x3c0/0x6a0
+ worker_thread+0x4e/0x490
+ ? process_one_work+0x410/0x410
+ kthread+0xe6/0x100
+ ret_from_fork+0x39/0x50
+
+Replace the synchronize_rcu() call with a rcu_barrier() to wait for all
+pending callbacks to finish. And inc isw_nr_in_flight after call_rcu()
+in inode_switch_wbs() to make more sense.
+
+Link: http://lkml.kernel.org/r/20190429024108.54150-1-jiufei.xue@linux.alibaba.com
+Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
+Acked-by: Tejun Heo <tj@kernel.org>
+Suggested-by: Tejun Heo <tj@kernel.org>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/fs-writeback.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+--- a/fs/fs-writeback.c
++++ b/fs/fs-writeback.c
+@@ -530,8 +530,6 @@ static void inode_switch_wbs(struct inod
+
+ isw->inode = inode;
+
+- atomic_inc(&isw_nr_in_flight);
+-
+ /*
+ * In addition to synchronizing among switchers, I_WB_SWITCH tells
+ * the RCU protected stat update paths to grab the mapping's
+@@ -539,6 +537,9 @@ static void inode_switch_wbs(struct inod
+ * Let's continue after I_WB_SWITCH is guaranteed to be visible.
+ */
+ call_rcu(&isw->rcu_head, inode_switch_wbs_rcu_fn);
++
++ atomic_inc(&isw_nr_in_flight);
++
+ goto out_unlock;
+
+ out_free:
+@@ -908,7 +909,11 @@ restart:
+ void cgroup_writeback_umount(void)
+ {
+ if (atomic_read(&isw_nr_in_flight)) {
+- synchronize_rcu();
++ /*
++ * Use rcu_barrier() to wait for all pending callbacks to
++ * ensure that all in-flight wb switches are in the workqueue.
++ */
++ rcu_barrier();
+ flush_workqueue(isw_wq);
+ }
+ }
--- /dev/null
+From 11988499e62b310f3bf6f6d0a807a06d3f9ccc96 Mon Sep 17 00:00:00 2001
+From: Sean Christopherson <sean.j.christopherson@intel.com>
+Date: Tue, 2 Apr 2019 08:19:15 -0700
+Subject: KVM: x86: Skip EFER vs. guest CPUID checks for host-initiated writes
+
+From: Sean Christopherson <sean.j.christopherson@intel.com>
+
+commit 11988499e62b310f3bf6f6d0a807a06d3f9ccc96 upstream.
+
+KVM allows userspace to violate consistency checks related to the
+guest's CPUID model to some degree. Generally speaking, userspace has
+carte blanche when it comes to guest state so long as jamming invalid
+state won't negatively affect the host.
+
+Currently this is seems to be a non-issue as most of the interesting
+EFER checks are missing, e.g. NX and LME, but those will be added
+shortly. Proactively exempt userspace from the CPUID checks so as not
+to break userspace.
+
+Note, the efer_reserved_bits check still applies to userspace writes as
+that mask reflects the host's capabilities, e.g. KVM shouldn't allow a
+guest to run with NX=1 if it has been disabled in the host.
+
+Fixes: d80174745ba39 ("KVM: SVM: Only allow setting of EFER_SVME when CPUID SVM is set")
+Cc: stable@vger.kernel.org
+Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
+Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/kvm/x86.c | 37 ++++++++++++++++++++++++-------------
+ 1 file changed, 24 insertions(+), 13 deletions(-)
+
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -1107,31 +1107,42 @@ static int do_get_msr_feature(struct kvm
+ return 0;
+ }
+
+-bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer)
++static bool __kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer)
+ {
+- if (efer & efer_reserved_bits)
+- return false;
+-
+ if (efer & EFER_FFXSR && !guest_cpuid_has(vcpu, X86_FEATURE_FXSR_OPT))
+- return false;
++ return false;
+
+ if (efer & EFER_SVME && !guest_cpuid_has(vcpu, X86_FEATURE_SVM))
+- return false;
++ return false;
+
+ return true;
++
++}
++bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer)
++{
++ if (efer & efer_reserved_bits)
++ return false;
++
++ return __kvm_valid_efer(vcpu, efer);
+ }
+ EXPORT_SYMBOL_GPL(kvm_valid_efer);
+
+-static int set_efer(struct kvm_vcpu *vcpu, u64 efer)
++static int set_efer(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+ {
+ u64 old_efer = vcpu->arch.efer;
++ u64 efer = msr_info->data;
+
+- if (!kvm_valid_efer(vcpu, efer))
+- return 1;
++ if (efer & efer_reserved_bits)
++ return false;
+
+- if (is_paging(vcpu)
+- && (vcpu->arch.efer & EFER_LME) != (efer & EFER_LME))
+- return 1;
++ if (!msr_info->host_initiated) {
++ if (!__kvm_valid_efer(vcpu, efer))
++ return 1;
++
++ if (is_paging(vcpu) &&
++ (vcpu->arch.efer & EFER_LME) != (efer & EFER_LME))
++ return 1;
++ }
+
+ efer &= ~EFER_LMA;
+ efer |= vcpu->arch.efer & EFER_LMA;
+@@ -2240,7 +2251,7 @@ int kvm_set_msr_common(struct kvm_vcpu *
+ vcpu->arch.arch_capabilities = data;
+ break;
+ case MSR_EFER:
+- return set_efer(vcpu, data);
++ return set_efer(vcpu, msr_info);
+ case MSR_K7_HWCR:
+ data &= ~(u64)0x40; /* ignore flush filter disable */
+ data &= ~(u64)0x100; /* ignore ignne emulation enable */
crypto-salsa20-don-t-access-already-freed-walk.iv.patch
crypto-ccm-fix-incompatibility-between-ccm-and-ccm_base.patch
fib_rules-fix-error-in-backport-of-e9919a24d302-fib_rules-return-0.patch
+fs-writeback.c-use-rcu_barrier-to-wait-for-inflight-wb-switches-going-into-workqueue-when-umount.patch
+ext4-zero-out-the-unused-memory-region-in-the-extent-tree-block.patch
+ext4-fix-data-corruption-caused-by-overlapping-unaligned-and-aligned-io.patch
+ext4-fix-use-after-free-in-dx_release.patch
+alsa-hda-realtek-fix-for-lenovo-b50-70-inverted-internal-microphone-bug.patch
+kvm-x86-skip-efer-vs.-guest-cpuid-checks-for-host-initiated-writes.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
