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https://github.com/archlinuxarm/PKGBUILDs.git
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core/linux-am33x to 4.8.14-1
This commit is contained in:
Kevin Mihelich
parent
ceef7499a5
commit
0ef0d8f75d
3 changed files with 6 additions and 101 deletions
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@ -1,7 +1,7 @@
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From 784abdd117ae0055f0a0207105ba15a5b12cf63d Mon Sep 17 00:00:00 2001
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From f137364218ea7c66b17fc391f0177afda37f21b8 Mon Sep 17 00:00:00 2001
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From: Mateusz Salamon <m.salamon@grinn-global.com>
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Date: Fri, 20 May 2016 14:31:51 +0200
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Subject: [PATCH 1/2] add lcd cape for chiliboard
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Subject: [PATCH] add lcd cape for chiliboard
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---
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arch/arm/boot/dts/Makefile | 1 +
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@ -1,92 +0,0 @@
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From 1892cd7d480b4553acb4dd64691f232f49899b49 Mon Sep 17 00:00:00 2001
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From: Philip Pettersson <philip.pettersson@gmail.com>
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Date: Wed, 30 Nov 2016 14:55:36 -0800
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Subject: [PATCH 2/2] packet: fix race condition in packet_set_ring
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When packet_set_ring creates a ring buffer it will initialize a
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struct timer_list if the packet version is TPACKET_V3. This value
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can then be raced by a different thread calling setsockopt to
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set the version to TPACKET_V1 before packet_set_ring has finished.
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This leads to a use-after-free on a function pointer in the
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struct timer_list when the socket is closed as the previously
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initialized timer will not be deleted.
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The bug is fixed by taking lock_sock(sk) in packet_setsockopt when
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changing the packet version while also taking the lock at the start
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of packet_set_ring.
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Fixes: f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation.")
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Signed-off-by: Philip Pettersson <philip.pettersson@gmail.com>
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Signed-off-by: Eric Dumazet <edumazet@google.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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net/packet/af_packet.c | 18 ++++++++++++------
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1 file changed, 12 insertions(+), 6 deletions(-)
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diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
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index 260adb1..f6a703b 100644
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--- a/net/packet/af_packet.c
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+++ b/net/packet/af_packet.c
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@@ -3649,19 +3649,25 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
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if (optlen != sizeof(val))
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return -EINVAL;
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- if (po->rx_ring.pg_vec || po->tx_ring.pg_vec)
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- return -EBUSY;
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if (copy_from_user(&val, optval, sizeof(val)))
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return -EFAULT;
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switch (val) {
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case TPACKET_V1:
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case TPACKET_V2:
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case TPACKET_V3:
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- po->tp_version = val;
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- return 0;
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+ break;
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default:
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return -EINVAL;
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}
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+ lock_sock(sk);
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+ if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) {
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+ ret = -EBUSY;
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+ } else {
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+ po->tp_version = val;
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+ ret = 0;
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+ }
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+ release_sock(sk);
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+ return ret;
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}
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case PACKET_RESERVE:
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{
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@@ -4165,6 +4171,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
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/* Added to avoid minimal code churn */
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struct tpacket_req *req = &req_u->req;
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+ lock_sock(sk);
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/* Opening a Tx-ring is NOT supported in TPACKET_V3 */
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if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
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net_warn_ratelimited("Tx-ring is not supported.\n");
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@@ -4246,7 +4253,6 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
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goto out;
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}
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- lock_sock(sk);
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/* Detach socket from network */
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spin_lock(&po->bind_lock);
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@@ -4295,11 +4301,11 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
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if (!tx_ring)
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prb_shutdown_retire_blk_timer(po, rb_queue);
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}
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- release_sock(sk);
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if (pg_vec)
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free_pg_vec(pg_vec, order, req->tp_block_nr);
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out:
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+ release_sock(sk);
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return err;
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}
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--
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2.10.2
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@ -7,7 +7,7 @@ pkgbase=linux-am33x
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_srcname=linux-4.8
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_kernelname=${pkgbase#linux}
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_desc="TI AM335x Beaglebone (Black)"
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pkgver=4.8.13
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pkgver=4.8.14
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pkgrel=1
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rcnrel=bone2
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arch=('armv7h')
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@ -20,14 +20,12 @@ source=("http://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar.xz"
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"http://rcn-ee.com/deb/sid-armhf/v${pkgver}-${rcnrel}/patch-${pkgver%.0}-${rcnrel}.diff.gz"
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"git+https://github.com/RobertCNelson/bb.org-overlays.git"
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'0001-add-lcd-cape-for-chiliboard.patch'
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'0002-packet-fix-race-condition-in-packet_set_ring.patch'
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'config')
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md5sums=('c1af0afbd3df35c1ccdc7a5118cd2d07'
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'bc208ac66340464839ee61a4621d9384'
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'c69dcceeb445890cde87bba1996ad645'
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'b8001f580c4da45ee7ae8d928275cf97'
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'497750564cb73746cde86e9cc76f9794'
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'SKIP'
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'8739df9e5a282194b1da69ce21e98934'
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'e1f71b0b82181899e1a8a73dff3695e6'
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'cae8b723f5e745c1106ab2ea75f72f20'
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'17a3edfc858c1d8def25e92df95be825')
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prepare() {
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@ -41,7 +39,6 @@ prepare() {
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# ALARM patches
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git apply ../0001-add-lcd-cape-for-chiliboard.patch
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git apply ../0002-packet-fix-race-condition-in-packet_set_ring.patch
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cat "${srcdir}/config" > ./.config
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