--- /dev/null
+From 74bba640d69914cf832b87f6bbb700e5ba430672 Mon Sep 17 00:00:00 2001
+From: Allen Ballway <ballway@chromium.org>
+Date: Wed, 10 Aug 2022 15:27:22 +0000
+Subject: ALSA: hda/cirrus - support for iMac 12,1 model
+
+From: Allen Ballway <ballway@chromium.org>
+
+commit 74bba640d69914cf832b87f6bbb700e5ba430672 upstream.
+
+The 12,1 model requires the same configuration as the 12,2 model
+to enable headphones but has a different codec SSID. Adds
+12,1 SSID for matching quirk.
+
+[ re-sorted in SSID order by tiwai ]
+
+Signed-off-by: Allen Ballway <ballway@chromium.org>
+Cc: <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20220810152701.1.I902c2e591bbf8de9acb649d1322fa1f291849266@changeid
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/pci/hda/patch_cirrus.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/sound/pci/hda/patch_cirrus.c
++++ b/sound/pci/hda/patch_cirrus.c
+@@ -409,6 +409,7 @@ static const struct snd_pci_quirk cs420x
+
+ /* codec SSID */
+ SND_PCI_QUIRK(0x106b, 0x0600, "iMac 14,1", CS420X_IMAC27_122),
++ SND_PCI_QUIRK(0x106b, 0x0900, "iMac 12,1", CS420X_IMAC27_122),
+ SND_PCI_QUIRK(0x106b, 0x1c00, "MacBookPro 8,1", CS420X_MBP81),
+ SND_PCI_QUIRK(0x106b, 0x2000, "iMac 12,2", CS420X_IMAC27_122),
+ SND_PCI_QUIRK(0x106b, 0x2800, "MacBookPro 10,1", CS420X_MBP101),
--- /dev/null
+From f83bb2592482fe94c6eea07a8121763c80f36ce5 Mon Sep 17 00:00:00 2001
+From: Meng Tang <tangmeng@uniontech.com>
+Date: Mon, 8 Aug 2022 15:34:06 +0800
+Subject: ALSA: hda/conexant: Add quirk for LENOVO 20149 Notebook model
+
+From: Meng Tang <tangmeng@uniontech.com>
+
+commit f83bb2592482fe94c6eea07a8121763c80f36ce5 upstream.
+
+There is another LENOVO 20149 (Type1Sku0) Notebook model with
+CX20590, the device PCI SSID is 17aa:3977, which headphones are
+not responding, that requires the quirk CXT_PINCFG_LENOVO_NOTEBOOK.
+Add the corresponding entry to the quirk table.
+
+Signed-off-by: Meng Tang <tangmeng@uniontech.com>
+Cc: <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20220808073406.19460-1-tangmeng@uniontech.com
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/pci/hda/patch_conexant.c | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -210,6 +210,7 @@ enum {
+ CXT_PINCFG_LEMOTE_A1205,
+ CXT_PINCFG_COMPAQ_CQ60,
+ CXT_FIXUP_STEREO_DMIC,
++ CXT_PINCFG_LENOVO_NOTEBOOK,
+ CXT_FIXUP_INC_MIC_BOOST,
+ CXT_FIXUP_HEADPHONE_MIC_PIN,
+ CXT_FIXUP_HEADPHONE_MIC,
+@@ -750,6 +751,14 @@ static const struct hda_fixup cxt_fixups
+ .type = HDA_FIXUP_FUNC,
+ .v.func = cxt_fixup_stereo_dmic,
+ },
++ [CXT_PINCFG_LENOVO_NOTEBOOK] = {
++ .type = HDA_FIXUP_PINS,
++ .v.pins = (const struct hda_pintbl[]) {
++ { 0x1a, 0x05d71030 },
++ { }
++ },
++ .chain_id = CXT_FIXUP_STEREO_DMIC,
++ },
+ [CXT_FIXUP_INC_MIC_BOOST] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = cxt5066_increase_mic_boost,
+@@ -943,7 +952,7 @@ static const struct snd_pci_quirk cxt506
+ SND_PCI_QUIRK(0x17aa, 0x3905, "Lenovo G50-30", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x390b, "Lenovo G50-80", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x3975, "Lenovo U300s", CXT_FIXUP_STEREO_DMIC),
+- SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_FIXUP_STEREO_DMIC),
++ SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_PINCFG_LENOVO_NOTEBOOK),
+ SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo G50-70", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205", CXT_FIXUP_STEREO_DMIC),
+ SND_PCI_QUIRK_VENDOR(0x17aa, "Thinkpad", CXT_FIXUP_THINKPAD_ACPI),
--- /dev/null
+From cad564ca557f8d3bb3b1fa965d9a2b3f6490ec69 Mon Sep 17 00:00:00 2001
+From: Helge Deller <deller@gmx.de>
+Date: Thu, 2 Jun 2022 22:06:28 +0200
+Subject: fbcon: Fix boundary checks for fbcon=vc:n1-n2 parameters
+
+From: Helge Deller <deller@gmx.de>
+
+commit cad564ca557f8d3bb3b1fa965d9a2b3f6490ec69 upstream.
+
+The user may use the fbcon=vc:<n1>-<n2> option to tell fbcon to take
+over the given range (n1...n2) of consoles. The value for n1 and n2
+needs to be a positive number and up to (MAX_NR_CONSOLES - 1).
+The given values were not fully checked against those boundaries yet.
+
+To fix the issue, convert first_fb_vc and last_fb_vc to unsigned
+integers and check them against the upper boundary, and make sure that
+first_fb_vc is smaller than last_fb_vc.
+
+Cc: stable@vger.kernel.org # v4.19+
+Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Helge Deller <deller@gmx.de>
+Link: https://patchwork.freedesktop.org/patch/msgid/YpkYRMojilrtZIgM@p100
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/video/fbdev/core/fbcon.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/drivers/video/fbdev/core/fbcon.c
++++ b/drivers/video/fbdev/core/fbcon.c
+@@ -103,8 +103,8 @@ static int logo_lines;
+ enums. */
+ static int logo_shown = FBCON_LOGO_CANSHOW;
+ /* console mappings */
+-static int first_fb_vc;
+-static int last_fb_vc = MAX_NR_CONSOLES - 1;
++static unsigned int first_fb_vc;
++static unsigned int last_fb_vc = MAX_NR_CONSOLES - 1;
+ static int fbcon_is_default = 1;
+ static int fbcon_has_exited;
+ static int primary_device = -1;
+@@ -456,10 +456,12 @@ static int __init fb_console_setup(char
+ options += 3;
+ if (*options)
+ first_fb_vc = simple_strtoul(options, &options, 10) - 1;
+- if (first_fb_vc < 0)
++ if (first_fb_vc >= MAX_NR_CONSOLES)
+ first_fb_vc = 0;
+ if (*options++ == '-')
+ last_fb_vc = simple_strtoul(options, &options, 10) - 1;
++ if (last_fb_vc < first_fb_vc || last_fb_vc >= MAX_NR_CONSOLES)
++ last_fb_vc = MAX_NR_CONSOLES - 1;
+ fbcon_is_default = 0;
+ continue;
+ }
--- /dev/null
+From ac6800e279a22b28f4fc21439843025a0d5bf03e Mon Sep 17 00:00:00 2001
+From: Yang Xu <xuyang2018.jy@fujitsu.com>
+Date: Thu, 14 Jul 2022 14:11:26 +0800
+Subject: fs: Add missing umask strip in vfs_tmpfile
+
+From: Yang Xu <xuyang2018.jy@fujitsu.com>
+
+commit ac6800e279a22b28f4fc21439843025a0d5bf03e upstream.
+
+All creation paths except for O_TMPFILE handle umask in the vfs directly
+if the filesystem doesn't support or enable POSIX ACLs. If the filesystem
+does then umask handling is deferred until posix_acl_create().
+Because, O_TMPFILE misses umask handling in the vfs it will not honor
+umask settings. Fix this by adding the missing umask handling.
+
+Link: https://lore.kernel.org/r/1657779088-2242-2-git-send-email-xuyang2018.jy@fujitsu.com
+Fixes: 60545d0d4610 ("[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...")
+Cc: <stable@vger.kernel.org> # 4.19+
+Reported-by: Christian Brauner (Microsoft) <brauner@kernel.org>
+Reviewed-by: Darrick J. Wong <djwong@kernel.org>
+Reviewed-and-Tested-by: Jeff Layton <jlayton@kernel.org>
+Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
+Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
+Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/namei.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/fs/namei.c
++++ b/fs/namei.c
+@@ -3453,6 +3453,8 @@ struct dentry *vfs_tmpfile(struct dentry
+ child = d_alloc(dentry, &slash_name);
+ if (unlikely(!child))
+ goto out_err;
++ if (!IS_POSIXACL(dir))
++ mode &= ~current_umask();
+ error = dir->i_op->tmpfile(dir, child, mode);
+ if (error)
+ goto out_err;
--- /dev/null
+From dd524b7f317de8d31d638cbfdc7be4cf9b770e42 Mon Sep 17 00:00:00 2001
+From: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
+Date: Thu, 28 Jul 2022 19:49:15 +0800
+Subject: ovl: drop WARN_ON() dentry is NULL in ovl_encode_fh()
+
+From: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
+
+commit dd524b7f317de8d31d638cbfdc7be4cf9b770e42 upstream.
+
+Some code paths cannot guarantee the inode have any dentry alias. So
+WARN_ON() all !dentry may flood the kernel logs.
+
+For example, when an overlayfs inode is watched by inotifywait (1), and
+someone is trying to read the /proc/$(pidof inotifywait)/fdinfo/INOTIFY_FD,
+at that time if the dentry has been reclaimed by kernel (such as
+echo 2 > /proc/sys/vm/drop_caches), there will be a WARN_ON(). The
+printed call stack would be like:
+
+ ? show_mark_fhandle+0xf0/0xf0
+ show_mark_fhandle+0x4a/0xf0
+ ? show_mark_fhandle+0xf0/0xf0
+ ? seq_vprintf+0x30/0x50
+ ? seq_printf+0x53/0x70
+ ? show_mark_fhandle+0xf0/0xf0
+ inotify_fdinfo+0x70/0x90
+ show_fdinfo.isra.4+0x53/0x70
+ seq_show+0x130/0x170
+ seq_read+0x153/0x440
+ vfs_read+0x94/0x150
+ ksys_read+0x5f/0xe0
+ do_syscall_64+0x59/0x1e0
+ entry_SYSCALL_64_after_hwframe+0x44/0xa9
+
+So let's drop WARN_ON() to avoid kernel log flooding.
+
+Reported-by: Hongbo Yin <yinhongbo@bytedance.com>
+Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
+Signed-off-by: Tianci Zhang <zhangtianci.1997@bytedance.com>
+Fixes: 8ed5eec9d6c4 ("ovl: encode pure upper file handles")
+Cc: <stable@vger.kernel.org> # v4.16
+Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/overlayfs/export.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/fs/overlayfs/export.c
++++ b/fs/overlayfs/export.c
+@@ -277,7 +277,7 @@ static int ovl_encode_fh(struct inode *i
+ return FILEID_INVALID;
+
+ dentry = d_find_any_alias(inode);
+- if (WARN_ON(!dentry))
++ if (!dentry)
+ return FILEID_INVALID;
+
+ type = ovl_dentry_to_fh(dentry, fid, max_len);
kvm-svm-don-t-bug-if-userspace-injects-an-interrupt-with-gif-0.patch
kvm-x86-mark-tss-busy-during-ltr-emulation-_after_-all-fault-checks.patch
kvm-x86-set-error-code-to-segment-selector-on-lldt-ltr-non-canonical-gp.patch
+alsa-hda-conexant-add-quirk-for-lenovo-20149-notebook-model.patch
+alsa-hda-cirrus-support-for-imac-12-1-model.patch
+tty-vt-initialize-unicode-screen-buffer.patch
+vfs-check-the-truncate-maximum-size-in-inode_newsize_ok.patch
+fs-add-missing-umask-strip-in-vfs_tmpfile.patch
+thermal-sysfs-fix-cooling_device_stats_setup-error-code-path.patch
+fbcon-fix-boundary-checks-for-fbcon-vc-n1-n2-parameters.patch
+usbnet-fix-linkwatch-use-after-free-on-disconnect.patch
+ovl-drop-warn_on-dentry-is-null-in-ovl_encode_fh.patch
--- /dev/null
+From d5a8aa5d7d80d21ab6b266f1bed4194b61746199 Mon Sep 17 00:00:00 2001
+From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
+Date: Fri, 29 Jul 2022 17:39:07 +0200
+Subject: thermal: sysfs: Fix cooling_device_stats_setup() error code path
+
+From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+
+commit d5a8aa5d7d80d21ab6b266f1bed4194b61746199 upstream.
+
+If cooling_device_stats_setup() fails to create the stats object, it
+must clear the last slot in cooling_device_attr_groups that was
+initially empty (so as to make it possible to add stats attributes to
+the cooling device attribute groups).
+
+Failing to do so may cause the stats attributes to be created by
+mistake for a device that doesn't have a stats object, because the
+slot in question might be populated previously during the registration
+of another cooling device.
+
+Fixes: 8ea229511e06 ("thermal: Add cooling device's statistics in sysfs")
+Reported-by: Di Shen <di.shen@unisoc.com>
+Tested-by: Di Shen <di.shen@unisoc.com>
+Cc: 4.17+ <stable@vger.kernel.org> # 4.17+
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/thermal/thermal_sysfs.c | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+--- a/drivers/thermal/thermal_sysfs.c
++++ b/drivers/thermal/thermal_sysfs.c
+@@ -909,12 +909,13 @@ static const struct attribute_group cool
+
+ static void cooling_device_stats_setup(struct thermal_cooling_device *cdev)
+ {
++ const struct attribute_group *stats_attr_group = NULL;
+ struct cooling_dev_stats *stats;
+ unsigned long states;
+ int var;
+
+ if (cdev->ops->get_max_state(cdev, &states))
+- return;
++ goto out;
+
+ states++; /* Total number of states is highest state + 1 */
+
+@@ -924,7 +925,7 @@ static void cooling_device_stats_setup(s
+
+ stats = kzalloc(var, GFP_KERNEL);
+ if (!stats)
+- return;
++ goto out;
+
+ stats->time_in_state = (ktime_t *)(stats + 1);
+ stats->trans_table = (unsigned int *)(stats->time_in_state + states);
+@@ -934,9 +935,12 @@ static void cooling_device_stats_setup(s
+
+ spin_lock_init(&stats->lock);
+
++ stats_attr_group = &cooling_device_stats_attr_group;
++
++out:
+ /* Fill the empty slot left in cooling_device_attr_groups */
+ var = ARRAY_SIZE(cooling_device_attr_groups) - 2;
+- cooling_device_attr_groups[var] = &cooling_device_stats_attr_group;
++ cooling_device_attr_groups[var] = stats_attr_group;
+ }
+
+ static void cooling_device_stats_destroy(struct thermal_cooling_device *cdev)
--- /dev/null
+From af77c56aa35325daa2bc2bed5c2ebf169be61b86 Mon Sep 17 00:00:00 2001
+From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+Date: Tue, 19 Jul 2022 14:49:39 +0900
+Subject: tty: vt: initialize unicode screen buffer
+
+From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+
+commit af77c56aa35325daa2bc2bed5c2ebf169be61b86 upstream.
+
+syzbot reports kernel infoleak at vcs_read() [1], for buffer can be read
+immediately after resize operation. Initialize buffer using kzalloc().
+
+ ----------
+ #include <fcntl.h>
+ #include <unistd.h>
+ #include <sys/ioctl.h>
+ #include <linux/fb.h>
+
+ int main(int argc, char *argv[])
+ {
+ struct fb_var_screeninfo var = { };
+ const int fb_fd = open("/dev/fb0", 3);
+ ioctl(fb_fd, FBIOGET_VSCREENINFO, &var);
+ var.yres = 0x21;
+ ioctl(fb_fd, FBIOPUT_VSCREENINFO, &var);
+ return read(open("/dev/vcsu", O_RDONLY), &var, sizeof(var)) == -1;
+ }
+ ----------
+
+Link: https://syzkaller.appspot.com/bug?extid=31a641689d43387f05d3 [1]
+Cc: stable <stable@vger.kernel.org>
+Reported-by: syzbot <syzbot+31a641689d43387f05d3@syzkaller.appspotmail.com>
+Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
+Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+Link: https://lore.kernel.org/r/4ef053cf-e796-fb5e-58b7-3ae58242a4ad@I-love.SAKURA.ne.jp
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/tty/vt/vt.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -351,7 +351,7 @@ static struct uni_screen *vc_uniscr_allo
+ /* allocate everything in one go */
+ memsize = cols * rows * sizeof(char32_t);
+ memsize += rows * sizeof(char32_t *);
+- p = vmalloc(memsize);
++ p = vzalloc(memsize);
+ if (!p)
+ return NULL;
+
--- /dev/null
+From a69e617e533edddf3fa3123149900f36e0a6dc74 Mon Sep 17 00:00:00 2001
+From: Lukas Wunner <lukas@wunner.de>
+Date: Thu, 23 Jun 2022 14:50:59 +0200
+Subject: usbnet: Fix linkwatch use-after-free on disconnect
+
+From: Lukas Wunner <lukas@wunner.de>
+
+commit a69e617e533edddf3fa3123149900f36e0a6dc74 upstream.
+
+usbnet uses the work usbnet_deferred_kevent() to perform tasks which may
+sleep. On disconnect, completion of the work was originally awaited in
+->ndo_stop(). But in 2003, that was moved to ->disconnect() by historic
+commit "[PATCH] USB: usbnet, prevent exotic rtnl deadlock":
+
+ https://git.kernel.org/tglx/history/c/0f138bbfd83c
+
+The change was made because back then, the kernel's workqueue
+implementation did not allow waiting for a single work. One had to wait
+for completion of *all* work by calling flush_scheduled_work(), and that
+could deadlock when waiting for usbnet_deferred_kevent() with rtnl_mutex
+held in ->ndo_stop().
+
+The commit solved one problem but created another: It causes a
+use-after-free in USB Ethernet drivers aqc111.c, asix_devices.c,
+ax88179_178a.c, ch9200.c and smsc75xx.c:
+
+* If the drivers receive a link change interrupt immediately before
+ disconnect, they raise EVENT_LINK_RESET in their (non-sleepable)
+ ->status() callback and schedule usbnet_deferred_kevent().
+* usbnet_deferred_kevent() invokes the driver's ->link_reset() callback,
+ which calls netif_carrier_{on,off}().
+* That in turn schedules the work linkwatch_event().
+
+Because usbnet_deferred_kevent() is awaited after unregister_netdev(),
+netif_carrier_{on,off}() may operate on an unregistered netdev and
+linkwatch_event() may run after free_netdev(), causing a use-after-free.
+
+In 2010, usbnet was changed to only wait for a single instance of
+usbnet_deferred_kevent() instead of *all* work by commit 23f333a2bfaf
+("drivers/net: don't use flush_scheduled_work()").
+
+Unfortunately the commit neglected to move the wait back to
+->ndo_stop(). Rectify that omission at long last.
+
+Reported-by: Jann Horn <jannh@google.com>
+Link: https://lore.kernel.org/netdev/CAG48ez0MHBbENX5gCdHAUXZ7h7s20LnepBF-pa5M=7Bi-jZrEA@mail.gmail.com/
+Reported-by: Oleksij Rempel <o.rempel@pengutronix.de>
+Link: https://lore.kernel.org/netdev/20220315113841.GA22337@pengutronix.de/
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Cc: stable@vger.kernel.org
+Acked-by: Oliver Neukum <oneukum@suse.com>
+Link: https://lore.kernel.org/r/d1c87ebe9fc502bffcd1576e238d685ad08321e4.1655987888.git.lukas@wunner.de
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/net/usb/usbnet.c | 8 ++------
+ 1 file changed, 2 insertions(+), 6 deletions(-)
+
+--- a/drivers/net/usb/usbnet.c
++++ b/drivers/net/usb/usbnet.c
+@@ -845,13 +845,11 @@ int usbnet_stop (struct net_device *net)
+
+ mpn = !test_and_clear_bit(EVENT_NO_RUNTIME_PM, &dev->flags);
+
+- /* deferred work (task, timer, softirq) must also stop.
+- * can't flush_scheduled_work() until we drop rtnl (later),
+- * else workers could deadlock; so make workers a NOP.
+- */
++ /* deferred work (timer, softirq, task) must also stop */
+ dev->flags = 0;
+ del_timer_sync (&dev->delay);
+ tasklet_kill (&dev->bh);
++ cancel_work_sync(&dev->kevent);
+ if (!pm)
+ usb_autopm_put_interface(dev->intf);
+
+@@ -1614,8 +1612,6 @@ void usbnet_disconnect (struct usb_inter
+ net = dev->net;
+ unregister_netdev (net);
+
+- cancel_work_sync(&dev->kevent);
+-
+ usb_scuttle_anchored_urbs(&dev->deferred);
+
+ if (dev->driver_info->unbind)
--- /dev/null
+From e2ebff9c57fe4eb104ce4768f6ebcccf76bef849 Mon Sep 17 00:00:00 2001
+From: David Howells <dhowells@redhat.com>
+Date: Mon, 8 Aug 2022 09:52:35 +0100
+Subject: vfs: Check the truncate maximum size in inode_newsize_ok()
+
+From: David Howells <dhowells@redhat.com>
+
+commit e2ebff9c57fe4eb104ce4768f6ebcccf76bef849 upstream.
+
+If something manages to set the maximum file size to MAX_OFFSET+1, this
+can cause the xfs and ext4 filesystems at least to become corrupt.
+
+Ordinarily, the kernel protects against userspace trying this by
+checking the value early in the truncate() and ftruncate() system calls
+calls - but there are at least two places that this check is bypassed:
+
+ (1) Cachefiles will round up the EOF of the backing file to DIO block
+ size so as to allow DIO on the final block - but this might push
+ the offset negative. It then calls notify_change(), but this
+ inadvertently bypasses the checking. This can be triggered if
+ someone puts an 8EiB-1 file on a server for someone else to try and
+ access by, say, nfs.
+
+ (2) ksmbd doesn't check the value it is given in set_end_of_file_info()
+ and then calls vfs_truncate() directly - which also bypasses the
+ check.
+
+In both cases, it is potentially possible for a network filesystem to
+cause a disk filesystem to be corrupted: cachefiles in the client's
+cache filesystem; ksmbd in the server's filesystem.
+
+nfsd is okay as it checks the value, but we can then remove this check
+too.
+
+Fix this by adding a check to inode_newsize_ok(), as called from
+setattr_prepare(), thereby catching the issue as filesystems set up to
+perform the truncate with minimal opportunity for bypassing the new
+check.
+
+Fixes: 1f08c925e7a3 ("cachefiles: Implement backing file wrangling")
+Fixes: f44158485826 ("cifsd: add file operations")
+Signed-off-by: David Howells <dhowells@redhat.com>
+Reported-by: Jeff Layton <jlayton@kernel.org>
+Tested-by: Jeff Layton <jlayton@kernel.org>
+Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
+Cc: stable@kernel.org
+Acked-by: Alexander Viro <viro@zeniv.linux.org.uk>
+cc: Steve French <sfrench@samba.org>
+cc: Hyunchul Lee <hyc.lee@gmail.com>
+cc: Chuck Lever <chuck.lever@oracle.com>
+cc: Dave Wysochanski <dwysocha@redhat.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/attr.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/fs/attr.c
++++ b/fs/attr.c
+@@ -134,6 +134,8 @@ EXPORT_SYMBOL(setattr_prepare);
+ */
+ int inode_newsize_ok(const struct inode *inode, loff_t offset)
+ {
++ if (offset < 0)
++ return -EINVAL;
+ if (inode->i_size < offset) {
+ unsigned long limit;
+
projects / thirdparty / kernel / stable-queue.git / commitdiff
