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-rw-r--r--kernels/linux-libre-audit/0001-tty-n_hdlc-get-rid-of-racy-n_hdlc_tbuf.patch311
-rw-r--r--kernels/linux-libre-audit/PKGBUILD11
2 files changed, 3 insertions, 319 deletions
diff --git a/kernels/linux-libre-audit/0001-tty-n_hdlc-get-rid-of-racy-n_hdlc_tbuf.patch b/kernels/linux-libre-audit/0001-tty-n_hdlc-get-rid-of-racy-n_hdlc_tbuf.patch
deleted file mode 100644
index 0c13c9867..000000000
--- a/kernels/linux-libre-audit/0001-tty-n_hdlc-get-rid-of-racy-n_hdlc_tbuf.patch
+++ /dev/null
@@ -1,311 +0,0 @@
->From 1dea7a8061ad9212f4464464a80d0dcd477eceab Mon Sep 17 00:00:00 2001
-From: Alexander Popov <alex.popov () linux com>
-Date: Tue, 28 Feb 2017 19:28:54 +0300
-Subject: [PATCH 1/1] tty: n_hdlc: get rid of racy n_hdlc.tbuf
-
-Currently N_HDLC line discipline uses a self-made singly linked list for
-data buffers and has n_hdlc.tbuf pointer for buffer retransmitting after
-an error.
-
-The commit be10eb7589337e5defbe214dae038a53dd21add8
-("tty: n_hdlc add buffer flushing") introduced racy access to n_hdlc.tbuf.
-After tx error concurrent flush_tx_queue() and n_hdlc_send_frames() can put
-one data buffer to tx_free_buf_list twice. That causes double free in
-n_hdlc_release().
-
-Let's use standard kernel linked list and get rid of n_hdlc.tbuf:
-in case of tx error put current data buffer after the head of tx_buf_list.
-
-Signed-off-by: Alexander Popov <alex.popov () linux com>
----
- drivers/tty/n_hdlc.c | 132 +++++++++++++++++++++++++++------------------------
- 1 file changed, 69 insertions(+), 63 deletions(-)
-
-diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
-index eb27883..728c824 100644
---- a/drivers/tty/n_hdlc.c
-+++ b/drivers/tty/n_hdlc.c
-@@ -114,7 +114,7 @@
- #define DEFAULT_TX_BUF_COUNT 3
-
- struct n_hdlc_buf {
-- struct n_hdlc_buf *link;
-+ struct list_head list_item;
- int count;
- char buf[1];
- };
-@@ -122,8 +122,7 @@ struct n_hdlc_buf {
- #define N_HDLC_BUF_SIZE (sizeof(struct n_hdlc_buf) + maxframe)
-
- struct n_hdlc_buf_list {
-- struct n_hdlc_buf *head;
-- struct n_hdlc_buf *tail;
-+ struct list_head list;
- int count;
- spinlock_t spinlock;
- };
-@@ -136,7 +135,6 @@ struct n_hdlc_buf_list {
- * @backup_tty - TTY to use if tty gets closed
- * @tbusy - reentrancy flag for tx wakeup code
- * @woke_up - FIXME: describe this field
-- * @tbuf - currently transmitting tx buffer
- * @tx_buf_list - list of pending transmit frame buffers
- * @rx_buf_list - list of received frame buffers
- * @tx_free_buf_list - list unused transmit frame buffers
-@@ -149,7 +147,6 @@ struct n_hdlc {
- struct tty_struct *backup_tty;
- int tbusy;
- int woke_up;
-- struct n_hdlc_buf *tbuf;
- struct n_hdlc_buf_list tx_buf_list;
- struct n_hdlc_buf_list rx_buf_list;
- struct n_hdlc_buf_list tx_free_buf_list;
-@@ -159,6 +156,8 @@ struct n_hdlc {
- /*
- * HDLC buffer list manipulation functions
- */
-+static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list,
-+ struct n_hdlc_buf *buf);
- static void n_hdlc_buf_put(struct n_hdlc_buf_list *list,
- struct n_hdlc_buf *buf);
- static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *list);
-@@ -208,16 +207,9 @@ static void flush_tx_queue(struct tty_struct *tty)
- {
- struct n_hdlc *n_hdlc = tty2n_hdlc(tty);
- struct n_hdlc_buf *buf;
-- unsigned long flags;
-
- while ((buf = n_hdlc_buf_get(&n_hdlc->tx_buf_list)))
- n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, buf);
-- spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
-- if (n_hdlc->tbuf) {
-- n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, n_hdlc->tbuf);
-- n_hdlc->tbuf = NULL;
-- }
-- spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
- }
-
- static struct tty_ldisc_ops n_hdlc_ldisc = {
-@@ -283,7 +275,6 @@ static void n_hdlc_release(struct n_hdlc *n_hdlc)
- } else
- break;
- }
-- kfree(n_hdlc->tbuf);
- kfree(n_hdlc);
-
- } /* end of n_hdlc_release() */
-@@ -402,13 +393,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
- n_hdlc->woke_up = 0;
- spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
-
-- /* get current transmit buffer or get new transmit */
-- /* buffer from list of pending transmit buffers */
--
-- tbuf = n_hdlc->tbuf;
-- if (!tbuf)
-- tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
--
-+ tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
- while (tbuf) {
- if (debuglevel >= DEBUG_LEVEL_INFO)
- printk("%s(%d)sending frame %p, count=%d\n",
-@@ -420,7 +405,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
-
- /* rollback was possible and has been done */
- if (actual == -ERESTARTSYS) {
-- n_hdlc->tbuf = tbuf;
-+ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf);
- break;
- }
- /* if transmit error, throw frame away by */
-@@ -435,10 +420,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
-
- /* free current transmit buffer */
- n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, tbuf);
--
-- /* this tx buffer is done */
-- n_hdlc->tbuf = NULL;
--
-+
- /* wait up sleeping writers */
- wake_up_interruptible(&tty->write_wait);
-
-@@ -448,10 +430,12 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
- if (debuglevel >= DEBUG_LEVEL_INFO)
- printk("%s(%d)frame %p pending\n",
- __FILE__,__LINE__,tbuf);
--
-- /* buffer not accepted by driver */
-- /* set this buffer as pending buffer */
-- n_hdlc->tbuf = tbuf;
-+
-+ /*
-+ * the buffer was not accepted by driver,
-+ * return it back into tx queue
-+ */
-+ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf);
- break;
- }
- }
-@@ -749,7 +733,8 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
- int error = 0;
- int count;
- unsigned long flags;
--
-+ struct n_hdlc_buf *buf = NULL;
-+
- if (debuglevel >= DEBUG_LEVEL_INFO)
- printk("%s(%d)n_hdlc_tty_ioctl() called %d\n",
- __FILE__,__LINE__,cmd);
-@@ -763,8 +748,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
- /* report count of read data available */
- /* in next available frame (if any) */
- spin_lock_irqsave(&n_hdlc->rx_buf_list.spinlock,flags);
-- if (n_hdlc->rx_buf_list.head)
-- count = n_hdlc->rx_buf_list.head->count;
-+ buf = list_first_entry_or_null(&n_hdlc->rx_buf_list.list,
-+ struct n_hdlc_buf, list_item);
-+ if (buf)
-+ count = buf->count;
- else
- count = 0;
- spin_unlock_irqrestore(&n_hdlc->rx_buf_list.spinlock,flags);
-@@ -776,8 +763,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
- count = tty_chars_in_buffer(tty);
- /* add size of next output frame in queue */
- spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock,flags);
-- if (n_hdlc->tx_buf_list.head)
-- count += n_hdlc->tx_buf_list.head->count;
-+ buf = list_first_entry_or_null(&n_hdlc->tx_buf_list.list,
-+ struct n_hdlc_buf, list_item);
-+ if (buf)
-+ count += buf->count;
- spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock,flags);
- error = put_user(count, (int __user *)arg);
- break;
-@@ -825,14 +814,14 @@ static unsigned int n_hdlc_tty_poll(struct tty_struct *tty, struct file *filp,
- poll_wait(filp, &tty->write_wait, wait);
-
- /* set bits for operations that won't block */
-- if (n_hdlc->rx_buf_list.head)
-+ if (!list_empty(&n_hdlc->rx_buf_list.list))
- mask |= POLLIN | POLLRDNORM; /* readable */
- if (test_bit(TTY_OTHER_CLOSED, &tty->flags))
- mask |= POLLHUP;
- if (tty_hung_up_p(filp))
- mask |= POLLHUP;
- if (!tty_is_writelocked(tty) &&
-- n_hdlc->tx_free_buf_list.head)
-+ !list_empty(&n_hdlc->tx_free_buf_list.list))
- mask |= POLLOUT | POLLWRNORM; /* writable */
- }
- return mask;
-@@ -856,7 +845,12 @@ static struct n_hdlc *n_hdlc_alloc(void)
- spin_lock_init(&n_hdlc->tx_free_buf_list.spinlock);
- spin_lock_init(&n_hdlc->rx_buf_list.spinlock);
- spin_lock_init(&n_hdlc->tx_buf_list.spinlock);
--
-+
-+ INIT_LIST_HEAD(&n_hdlc->rx_free_buf_list.list);
-+ INIT_LIST_HEAD(&n_hdlc->tx_free_buf_list.list);
-+ INIT_LIST_HEAD(&n_hdlc->rx_buf_list.list);
-+ INIT_LIST_HEAD(&n_hdlc->tx_buf_list.list);
-+
- /* allocate free rx buffer list */
- for(i=0;i<DEFAULT_RX_BUF_COUNT;i++) {
- buf = kmalloc(N_HDLC_BUF_SIZE, GFP_KERNEL);
-@@ -884,53 +878,65 @@ static struct n_hdlc *n_hdlc_alloc(void)
- } /* end of n_hdlc_alloc() */
-
- /**
-+ * n_hdlc_buf_return - put the HDLC buffer after the head of the specified list
-+ * @buf_list - pointer to the buffer list
-+ * @buf - pointer to the buffer
-+ */
-+static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list,
-+ struct n_hdlc_buf *buf)
-+{
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&buf_list->spinlock, flags);
-+
-+ list_add(&buf->list_item, &buf_list->list);
-+ buf_list->count++;
-+
-+ spin_unlock_irqrestore(&buf_list->spinlock, flags);
-+}
-+
-+/**
- * n_hdlc_buf_put - add specified HDLC buffer to tail of specified list
-- * @list - pointer to buffer list
-+ * @buf_list - pointer to buffer list
- * @buf - pointer to buffer
- */
--static void n_hdlc_buf_put(struct n_hdlc_buf_list *list,
-+static void n_hdlc_buf_put(struct n_hdlc_buf_list *buf_list,
- struct n_hdlc_buf *buf)
- {
- unsigned long flags;
-- spin_lock_irqsave(&list->spinlock,flags);
--
-- buf->link=NULL;
-- if (list->tail)
-- list->tail->link = buf;
-- else
-- list->head = buf;
-- list->tail = buf;
-- (list->count)++;
--
-- spin_unlock_irqrestore(&list->spinlock,flags);
--
-+
-+ spin_lock_irqsave(&buf_list->spinlock, flags);
-+
-+ list_add_tail(&buf->list_item, &buf_list->list);
-+ buf_list->count++;
-+
-+ spin_unlock_irqrestore(&buf_list->spinlock, flags);
- } /* end of n_hdlc_buf_put() */
-
- /**
- * n_hdlc_buf_get - remove and return an HDLC buffer from list
-- * @list - pointer to HDLC buffer list
-+ * @buf_list - pointer to HDLC buffer list
- *
- * Remove and return an HDLC buffer from the head of the specified HDLC buffer
- * list.
- * Returns a pointer to HDLC buffer if available, otherwise %NULL.
- */
--static struct n_hdlc_buf* n_hdlc_buf_get(struct n_hdlc_buf_list *list)
-+static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *buf_list)
- {
- unsigned long flags;
- struct n_hdlc_buf *buf;
-- spin_lock_irqsave(&list->spinlock,flags);
--
-- buf = list->head;
-+
-+ spin_lock_irqsave(&buf_list->spinlock, flags);
-+
-+ buf = list_first_entry_or_null(&buf_list->list,
-+ struct n_hdlc_buf, list_item);
- if (buf) {
-- list->head = buf->link;
-- (list->count)--;
-+ list_del(&buf->list_item);
-+ buf_list->count--;
- }
-- if (!list->head)
-- list->tail = NULL;
--
-- spin_unlock_irqrestore(&list->spinlock,flags);
-+
-+ spin_unlock_irqrestore(&buf_list->spinlock, flags);
- return buf;
--
- } /* end of n_hdlc_buf_get() */
-
- static char hdlc_banner[] __initdata =
---
-2.7.4
-
diff --git a/kernels/linux-libre-audit/PKGBUILD b/kernels/linux-libre-audit/PKGBUILD
index 39cef35ee..c91e3a4e4 100644
--- a/kernels/linux-libre-audit/PKGBUILD
+++ b/kernels/linux-libre-audit/PKGBUILD
@@ -10,7 +10,7 @@
pkgbase=linux-libre-audit
_pkgbasever=4.10-gnu
-_pkgver=4.10.2-gnu
+_pkgver=4.10.3-gnu
_replacesarchkernel=('linux%') # '%' gets replaced with _kernelname
_replacesoldkernels=() # '%' gets replaced with _kernelname
@@ -43,7 +43,6 @@ source=("https://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/l
'99-linux.hook'
# standard config files for mkinitcpio ramdisk
'linux.preset'
- '0001-tty-n_hdlc-get-rid-of-racy-n_hdlc_tbuf.patch'
'0001-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch'
'0002-fix-Atmel-maXTouch-touchscreen-support.patch'
# armv7h patches
@@ -61,7 +60,7 @@ source=("https://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/l
'0010-disable-USB3-port-on-ODROID-XU.patch')
sha512sums=('44d1774a1d43a15322297d351737fbcbf92c6f433266ce2b17587437d433562cf5811fdae48fafd5a8e00d18ed9ac2e1ad4b12a657f322eb234384316ad131e0'
'SKIP'
- '02e518e8192f7b71dcb3724d1b9f4bc502d210387548a77a8edf6900281ccd13de55986382c9be00afacf0dc0ca2f13a70327be9230b1c93d95bc917cfd17643'
+ 'c2e674578fa3b0e86941009034c69aea09267b322e0a58f7850c7e5b79db69486d1ada277a37825e94dcbbd4798ee56655db1900dabf34f00097f331d08e5fc6'
'SKIP'
'13cb5bc42542e7b8bb104d5f68253f6609e463b6799800418af33eb0272cc269aaa36163c3e6f0aacbdaaa1d05e2827a4a7c4a08a029238439ed08b89c564bb3'
'SKIP'
@@ -74,10 +73,9 @@ sha512sums=('44d1774a1d43a15322297d351737fbcbf92c6f433266ce2b17587437d433562cf58
'c4f76fb0382cff59bc384e2f77c4a4eff60f7d89361ff9e9adb21ce7476e8bb1d3a0be62e11687a1f8d3c242752ee7461845a70ee4fd8563c2ec0fd6bc50dd38'
'd6faa67f3ef40052152254ae43fee031365d0b1524aa0718b659eb75afc21a3f79ea8d62d66ea311a800109bed545bc8f79e8752319cd378eef2cbd3a09aba22'
'2dc6b0ba8f7dbf19d2446c5c5f1823587de89f4e28e9595937dd51a87755099656f2acec50e3e2546ea633ad1bfd1c722e0c2b91eef1d609103d8abdc0a7cbaf'
- '397fc751697cc4e2ceb7e6d854f5e7fc115ed8511df406ffe5d8f80afeec385ba64cd28c4666bb206612fdcd7a578b60ca6ff125c2138c615aee6135d86b0197'
'02af4dd2a007e41db0c63822c8ab3b80b5d25646af1906dc85d0ad9bb8bbf5236f8e381d7f91cf99ed4b0978c50aee37cb9567cdeef65b7ec3d91b882852b1af'
'b8fe56e14006ab866970ddbd501c054ae37186ddc065bb869cf7d18db8c0d455118d5bda3255fb66a0dde38b544655cfe9040ffe46e41d19830b47959b2fb168'
- '08f47087aa71d1aca8dc4d5b7bb28cff3a7bb99f5bd64fc47664d3927ef470e256d22018da0726c186d9f9d19711c91ae4f3333aa161a0b18c082b5b60e5d74d'
+ '84d9cc5a46ce437ffbb83525d72473ba00ed7ab9012af52a1e0226a22380b2224a48a1bce4e1030e08dfbdde0b760702217b5107673d62770eea26d503a42e0c'
'SKIP'
'dd4e2482d6e3d91d00e37e665933515a4fa876d39c036d639f21c48a09f03202f3dec0dbe04b7c60c4b7e1f49617b5f94ace688afacbe33dc6d6818c0c797031'
'cf0a3061cef91c04fa5e6d50c4ee235f817cb97f6b7a77f42d42ada707e71bd9731dfafdfcf396e767362998acd8b98ad9942a989c2dd8457e57177c354ec7d2'
@@ -140,9 +138,6 @@ prepare() {
# add latest fixes from stable queue, if needed
# http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git
- # patch for CVE-2017-2636
- patch -p1 -i "${srcdir}/0001-tty-n_hdlc-get-rid-of-racy-n_hdlc_tbuf.patch"
-
# maintain the TTY over USB disconnects
# http://www.coreboot.org/EHCI_Gadget_Debug
patch -p1 -i "${srcdir}/0001-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch"
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 19:57:05 +0000