Re: Linux 5.13.11

From: Greg Kroah-Hartman
Date: Sun Aug 15 2021 - 08:29:54 EST

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diff --git a/Makefile b/Makefile
index 4e9f877f513f..eaf1df54ad12 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 5
PATCHLEVEL = 13
-SUBLEVEL = 10
+SUBLEVEL = 11
EXTRAVERSION =
NAME = Opossums on Parade

diff --git a/drivers/firmware/broadcom/tee_bnxt_fw.c b/drivers/firmware/broadcom/tee_bnxt_fw.c
index ed10da5313e8..a5bf4c3f6dc7 100644
--- a/drivers/firmware/broadcom/tee_bnxt_fw.c
+++ b/drivers/firmware/broadcom/tee_bnxt_fw.c
@@ -212,10 +212,9 @@ static int tee_bnxt_fw_probe(struct device *dev)

pvt_data.dev = dev;

- fw_shm_pool = tee_shm_alloc(pvt_data.ctx, MAX_SHM_MEM_SZ,
- TEE_SHM_MAPPED | TEE_SHM_DMA_BUF);
+ fw_shm_pool = tee_shm_alloc_kernel_buf(pvt_data.ctx, MAX_SHM_MEM_SZ);
if (IS_ERR(fw_shm_pool)) {
- dev_err(pvt_data.dev, "tee_shm_alloc failed\n");
+ dev_err(pvt_data.dev, "tee_shm_alloc_kernel_buf failed\n");
err = PTR_ERR(fw_shm_pool);
goto out_sess;
}
@@ -242,6 +241,14 @@ static int tee_bnxt_fw_remove(struct device *dev)
return 0;
}

+static void tee_bnxt_fw_shutdown(struct device *dev)
+{
+ tee_shm_free(pvt_data.fw_shm_pool);
+ tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
+ tee_client_close_context(pvt_data.ctx);
+ pvt_data.ctx = NULL;
+}
+
static const struct tee_client_device_id tee_bnxt_fw_id_table[] = {
{UUID_INIT(0x6272636D, 0x2019, 0x0716,
0x42, 0x43, 0x4D, 0x5F, 0x53, 0x43, 0x48, 0x49)},
@@ -257,6 +264,7 @@ static struct tee_client_driver tee_bnxt_fw_driver = {
.bus = &tee_bus_type,
.probe = tee_bnxt_fw_probe,
.remove = tee_bnxt_fw_remove,
+ .shutdown = tee_bnxt_fw_shutdown,
},
};

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 930e49ef15f6..b9dd47bd597f 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -284,7 +284,7 @@ static struct channel *ppp_find_channel(struct ppp_net *pn, int unit);
static int ppp_connect_channel(struct channel *pch, int unit);
static int ppp_disconnect_channel(struct channel *pch);
static void ppp_destroy_channel(struct channel *pch);
-static int unit_get(struct idr *p, void *ptr);
+static int unit_get(struct idr *p, void *ptr, int min);
static int unit_set(struct idr *p, void *ptr, int n);
static void unit_put(struct idr *p, int n);
static void *unit_find(struct idr *p, int n);
@@ -1155,9 +1155,20 @@ static int ppp_unit_register(struct ppp *ppp, int unit, bool ifname_is_set)
mutex_lock(&pn->all_ppp_mutex);

if (unit < 0) {
- ret = unit_get(&pn->units_idr, ppp);
+ ret = unit_get(&pn->units_idr, ppp, 0);
if (ret < 0)
goto err;
+ if (!ifname_is_set) {
+ while (1) {
+ snprintf(ppp->dev->name, IFNAMSIZ, "ppp%i", ret);
+ if (!__dev_get_by_name(ppp->ppp_net, ppp->dev->name))
+ break;
+ unit_put(&pn->units_idr, ret);
+ ret = unit_get(&pn->units_idr, ppp, ret + 1);
+ if (ret < 0)
+ goto err;
+ }
+ }
} else {
/* Caller asked for a specific unit number. Fail with -EEXIST
* if unavailable. For backward compatibility, return -EEXIST
@@ -3552,9 +3563,9 @@ static int unit_set(struct idr *p, void *ptr, int n)
}

/* get new free unit number and associate pointer with it */
-static int unit_get(struct idr *p, void *ptr)
+static int unit_get(struct idr *p, void *ptr, int min)
{
- return idr_alloc(p, ptr, 0, 0, GFP_KERNEL);
+ return idr_alloc(p, ptr, min, 0, GFP_KERNEL);
}

/* put unit number back to a pool */
diff --git a/fs/namespace.c b/fs/namespace.c
index c3f1a78ba369..caad091fb204 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1938,6 +1938,20 @@ void drop_collected_mounts(struct vfsmount *mnt)
namespace_unlock();
}

+static bool has_locked_children(struct mount *mnt, struct dentry *dentry)
+{
+ struct mount *child;
+
+ list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
+ if (!is_subdir(child->mnt_mountpoint, dentry))
+ continue;
+
+ if (child->mnt.mnt_flags & MNT_LOCKED)
+ return true;
+ }
+ return false;
+}
+
/**
* clone_private_mount - create a private clone of a path
* @path: path to clone
@@ -1953,10 +1967,19 @@ struct vfsmount *clone_private_mount(const struct path *path)
struct mount *old_mnt = real_mount(path->mnt);
struct mount *new_mnt;

+ down_read(&namespace_sem);
if (IS_MNT_UNBINDABLE(old_mnt))
- return ERR_PTR(-EINVAL);
+ goto invalid;
+
+ if (!check_mnt(old_mnt))
+ goto invalid;
+
+ if (has_locked_children(old_mnt, path->dentry))
+ goto invalid;

new_mnt = clone_mnt(old_mnt, path->dentry, CL_PRIVATE);
+ up_read(&namespace_sem);
+
if (IS_ERR(new_mnt))
return ERR_CAST(new_mnt);

@@ -1964,6 +1987,10 @@ struct vfsmount *clone_private_mount(const struct path *path)
new_mnt->mnt_ns = MNT_NS_INTERNAL;

return &new_mnt->mnt;
+
+invalid:
+ up_read(&namespace_sem);
+ return ERR_PTR(-EINVAL);
}
EXPORT_SYMBOL_GPL(clone_private_mount);

@@ -2315,19 +2342,6 @@ static int do_change_type(struct path *path, int ms_flags)
return err;
}

-static bool has_locked_children(struct mount *mnt, struct dentry *dentry)
-{
- struct mount *child;
- list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
- if (!is_subdir(child->mnt_mountpoint, dentry))
- continue;
-
- if (child->mnt.mnt_flags & MNT_LOCKED)
- return true;
- }
- return false;
-}
-
static struct mount *__do_loopback(struct path *old_path, int recurse)
{
struct mount *mnt = ERR_PTR(-EINVAL), *old = real_mount(old_path->mnt);
diff --git a/include/linux/security.h b/include/linux/security.h
index 06f7c50ce77f..0acd1b68bf30 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -120,6 +120,7 @@ enum lockdown_reason {
LOCKDOWN_MMIOTRACE,
LOCKDOWN_DEBUGFS,
LOCKDOWN_XMON_WR,
+ LOCKDOWN_BPF_WRITE_USER,
LOCKDOWN_INTEGRITY_MAX,
LOCKDOWN_KCORE,
LOCKDOWN_KPROBES,
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index f0568b3d6bd1..77a0d0fb97a9 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -990,12 +990,13 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return &bpf_get_numa_node_id_proto;
case BPF_FUNC_perf_event_read:
return &bpf_perf_event_read_proto;
- case BPF_FUNC_probe_write_user:
- return bpf_get_probe_write_proto();
case BPF_FUNC_current_task_under_cgroup:
return &bpf_current_task_under_cgroup_proto;
case BPF_FUNC_get_prandom_u32:
return &bpf_get_prandom_u32_proto;
+ case BPF_FUNC_probe_write_user:
+ return security_locked_down(LOCKDOWN_BPF_WRITE_USER) < 0 ?
+ NULL : bpf_get_probe_write_proto();
case BPF_FUNC_probe_read_user:
return &bpf_probe_read_user_proto;
case BPF_FUNC_probe_read_kernel:
diff --git a/security/security.c b/security/security.c
index b38155b2de83..0d626c0dafcc 100644
--- a/security/security.c
+++ b/security/security.c
@@ -58,6 +58,7 @@ const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
[LOCKDOWN_MMIOTRACE] = "unsafe mmio",
[LOCKDOWN_DEBUGFS] = "debugfs access",
[LOCKDOWN_XMON_WR] = "xmon write access",
+ [LOCKDOWN_BPF_WRITE_USER] = "use of bpf to write user RAM",
[LOCKDOWN_INTEGRITY_MAX] = "integrity",
[LOCKDOWN_KCORE] = "/proc/kcore access",
[LOCKDOWN_KPROBES] = "use of kprobes",
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 2b3c164d21f1..cb795135ffc2 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -251,7 +251,10 @@ static bool hw_support_mmap(struct snd_pcm_substream *substream)

switch (substream->dma_buffer.dev.type) {
case SNDRV_DMA_TYPE_UNKNOWN:
- return false;
+ /* we can't know the device, so just assume that the driver does
+ * everything right
+ */
+ return true;
case SNDRV_DMA_TYPE_CONTINUOUS:
case SNDRV_DMA_TYPE_VMALLOC:
return true;
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index c92d9b9cf944..6d8c4dedfe0f 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -8371,6 +8371,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x103c, 0x87f4, "HP", ALC287_FIXUP_HP_GPIO_LED),
SND_PCI_QUIRK(0x103c, 0x87f5, "HP", ALC287_FIXUP_HP_GPIO_LED),
SND_PCI_QUIRK(0x103c, 0x87f7, "HP Spectre x360 14", ALC245_FIXUP_HP_X360_AMP),
+ SND_PCI_QUIRK(0x103c, 0x8805, "HP ProBook 650 G8 Notebook PC", ALC236_FIXUP_HP_GPIO_LED),
SND_PCI_QUIRK(0x103c, 0x880d, "HP EliteBook 830 G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
SND_PCI_QUIRK(0x103c, 0x8846, "HP EliteBook 850 G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
SND_PCI_QUIRK(0x103c, 0x8847, "HP EliteBook x360 830 G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
@@ -8405,6 +8406,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC),
SND_PCI_QUIRK(0x1043, 0x1740, "ASUS UX430UA", ALC295_FIXUP_ASUS_DACS),
SND_PCI_QUIRK(0x1043, 0x17d1, "ASUS UX431FL", ALC294_FIXUP_ASUS_DUAL_SPK),
+ SND_PCI_QUIRK(0x1043, 0x1662, "ASUS GV301QH", ALC294_FIXUP_ASUS_DUAL_SPK),
SND_PCI_QUIRK(0x1043, 0x1881, "ASUS Zephyrus S/M", ALC294_FIXUP_ASUS_GX502_PINS),
SND_PCI_QUIRK(0x1043, 0x18b1, "Asus MJ401TA", ALC256_FIXUP_ASUS_HEADSET_MIC),
SND_PCI_QUIRK(0x1043, 0x18f1, "Asus FX505DT", ALC256_FIXUP_ASUS_HEADSET_MIC),

Next message: Marek Vasut: "Re: Revert "video: fbdev: mxsfb: Remove driver""
Previous message: Greg Kroah-Hartman: "Linux 5.13.11"
In reply to: Greg Kroah-Hartman: "Linux 5.13.11"
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