commit:     3b1ab4c6f6d8f4575f59f5bd68df669031dbbc85
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Feb 11 12:38:29 2022 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Feb 11 12:38:29 2022 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=3b1ab4c6

Linux patch 4.9.301

Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>

 0000_README              |   4 ++
 1300_linux-4.9.301.patch | 122 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+)

diff --git a/0000_README b/0000_README
index ca366421..27337b1d 100644
--- a/0000_README
+++ b/0000_README
@@ -1243,6 +1243,10 @@ Patch:  1299_linux-4.9.300.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.9.300
 
+Patch:  1300_linux-4.9.301.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.9.301
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1300_linux-4.9.301.patch b/1300_linux-4.9.301.patch
new file mode 100644
index 00000000..964b2d7a
--- /dev/null
+++ b/1300_linux-4.9.301.patch
@@ -0,0 +1,122 @@
+diff --git a/Makefile b/Makefile
+index 52e73f525a442..776408b6c56e7 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 9
+-SUBLEVEL = 300
++SUBLEVEL = 301
+ EXTRAVERSION =
+ NAME = Roaring Lionus
+ 
+diff --git a/drivers/mmc/host/moxart-mmc.c b/drivers/mmc/host/moxart-mmc.c
+index 41a5493cb68d8..a5b03fb7656d1 100644
+--- a/drivers/mmc/host/moxart-mmc.c
++++ b/drivers/mmc/host/moxart-mmc.c
+@@ -698,12 +698,12 @@ static int moxart_remove(struct platform_device *pdev)
+               if (!IS_ERR(host->dma_chan_rx))
+                       dma_release_channel(host->dma_chan_rx);
+               mmc_remove_host(mmc);
+-              mmc_free_host(mmc);
+ 
+               writel(0, host->base + REG_INTERRUPT_MASK);
+               writel(0, host->base + REG_POWER_CONTROL);
+               writel(readl(host->base + REG_CLOCK_CONTROL) | CLK_OFF,
+                      host->base + REG_CLOCK_CONTROL);
++              mmc_free_host(mmc);
+       }
+       return 0;
+ }
+diff --git a/kernel/cgroup.c b/kernel/cgroup.c
+index 248b0bf5d6795..5702419c9f300 100644
+--- a/kernel/cgroup.c
++++ b/kernel/cgroup.c
+@@ -1854,6 +1854,7 @@ static int cgroup_remount(struct kernfs_root *kf_root, 
int *flags, char *data)
+ {
+       int ret = 0;
+       struct cgroup_root *root = cgroup_root_from_kf(kf_root);
++      struct cgroup_namespace *ns = current->nsproxy->cgroup_ns;
+       struct cgroup_sb_opts opts;
+       u16 added_mask, removed_mask;
+ 
+@@ -1873,6 +1874,13 @@ static int cgroup_remount(struct kernfs_root *kf_root, 
int *flags, char *data)
+               pr_warn("option changes via remount are deprecated (pid=%d 
comm=%s)\n",
+                       task_tgid_nr(current), current->comm);
+ 
++      /* See cgroup_mount release_agent handling */
++      if (opts.release_agent &&
++          ((ns->user_ns != &init_user_ns) || !capable(CAP_SYS_ADMIN))) {
++              ret = -EINVAL;
++              goto out_unlock;
++      }
++
+       added_mask = opts.subsys_mask & ~root->subsys_mask;
+       removed_mask = root->subsys_mask & ~opts.subsys_mask;
+ 
+@@ -2248,6 +2256,16 @@ static struct dentry *cgroup_mount(struct 
file_system_type *fs_type,
+               goto out_unlock;
+       }
+ 
++      /*
++       * Release agent gets called with all capabilities,
++       * require capabilities to set release agent.
++       */
++      if (opts.release_agent &&
++          ((ns->user_ns != &init_user_ns) || !capable(CAP_SYS_ADMIN))) {
++              ret = -EINVAL;
++              goto out_unlock;
++      }
++
+       root = kzalloc(sizeof(*root), GFP_KERNEL);
+       if (!root) {
+               ret = -ENOMEM;
+@@ -3026,6 +3044,14 @@ static ssize_t cgroup_release_agent_write(struct 
kernfs_open_file *of,
+ 
+       BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);
+ 
++      /*
++       * Release agent gets called with all capabilities,
++       * require capabilities to set release agent.
++       */
++      if ((of->file->f_cred->user_ns != &init_user_ns) ||
++          !capable(CAP_SYS_ADMIN))
++              return -EPERM;
++
+       cgrp = cgroup_kn_lock_live(of->kn, false);
+       if (!cgrp)
+               return -ENODEV;
+diff --git a/net/tipc/link.c b/net/tipc/link.c
+index 6fc2fa75503d2..2c1350e811e2e 100644
+--- a/net/tipc/link.c
++++ b/net/tipc/link.c
+@@ -1441,12 +1441,15 @@ static int tipc_link_proto_rcv(struct tipc_link *l, 
struct sk_buff *skb,
+       u16 peers_tol = msg_link_tolerance(hdr);
+       u16 peers_prio = msg_linkprio(hdr);
+       u16 rcv_nxt = l->rcv_nxt;
+-      u16 dlen = msg_data_sz(hdr);
++      u32 dlen = msg_data_sz(hdr);
+       int mtyp = msg_type(hdr);
+       void *data;
+       char *if_name;
+       int rc = 0;
+ 
++      if (dlen > U16_MAX)
++              goto exit;
++
+       if (tipc_link_is_blocked(l) || !xmitq)
+               goto exit;
+ 
+diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c
+index 0fcfb3916dcf2..e1f4538b16532 100644
+--- a/net/tipc/monitor.c
++++ b/net/tipc/monitor.c
+@@ -457,6 +457,8 @@ void tipc_mon_rcv(struct net *net, void *data, u16 dlen, 
u32 addr,
+       state->probing = false;
+ 
+       /* Sanity check received domain record */
++      if (new_member_cnt > MAX_MON_DOMAIN)
++              return;
+       if (dlen < dom_rec_len(arrv_dom, 0))
+               return;
+       if (dlen != dom_rec_len(arrv_dom, new_member_cnt))

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