From: Ben Hutchings <ben@decadent.org.uk>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk,
"Sjur Brændeland" <sjur.brandeland@stericsson.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [ 04/37] caif: Fix access to freed pernet memory
Date: Fri, 17 Aug 2012 04:02:47 +0100 [thread overview]
Message-ID: <20120817030244.417737302@decadent.org.uk> (raw)
In-Reply-To: <20120817030243.807605523@decadent.org.uk>
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3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sjur Brændeland <sjur.brandeland@stericsson.com>
[ Upstream commit 96f80d123eff05c3cd4701463786b87952a6c3ac ]
unregister_netdevice_notifier() must be called before
unregister_pernet_subsys() to avoid accessing already freed
pernet memory. This fixes the following oops when doing rmmod:
Call Trace:
[<ffffffffa0f802bd>] caif_device_notify+0x4d/0x5a0 [caif]
[<ffffffff81552ba9>] unregister_netdevice_notifier+0xb9/0x100
[<ffffffffa0f86dcc>] caif_device_exit+0x1c/0x250 [caif]
[<ffffffff810e7734>] sys_delete_module+0x1a4/0x300
[<ffffffff810da82d>] ? trace_hardirqs_on_caller+0x15d/0x1e0
[<ffffffff813517de>] ? trace_hardirqs_on_thunk+0x3a/0x3
[<ffffffff81696bad>] system_call_fastpath+0x1a/0x1f
RIP
[<ffffffffa0f7f561>] caif_get+0x51/0xb0 [caif]
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/caif/caif_dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 68223e4..4e9115d 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -428,9 +428,9 @@ static int __init caif_device_init(void)
static void __exit caif_device_exit(void)
{
- unregister_pernet_subsys(&caif_net_ops);
unregister_netdevice_notifier(&caif_device_notifier);
dev_remove_pack(&caif_packet_type);
+ unregister_pernet_subsys(&caif_net_ops);
}
module_init(caif_device_init);
next prev parent reply other threads:[~2012-08-17 3:35 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-17 3:02 [ 00/37] 3.2.28-stable review Ben Hutchings
2012-08-17 3:02 ` [ 01/37] bnx2: Fix bug in bnx2_free_tx_skbs() Ben Hutchings
2012-08-17 3:02 ` [ 02/37] sch_sfb: Fix missing NULL check Ben Hutchings
2012-08-17 3:02 ` [ 03/37] sctp: Fix list corruption resulting from freeing an association on a list Ben Hutchings
2012-08-17 3:02 ` Ben Hutchings [this message]
2012-08-17 3:02 ` [ 05/37] cipso: dont follow a NULL pointer when setsockopt() is called Ben Hutchings
2012-08-17 3:02 ` [ 06/37] caif: fix NULL pointer check Ben Hutchings
2012-08-17 3:02 ` [ 07/37] wanmain: comparing array with NULL Ben Hutchings
2012-08-17 3:02 ` [ 08/37] tcp: Add TCP_USER_TIMEOUT negative value check Ben Hutchings
2012-08-17 3:02 ` [ 09/37] USB: kaweth.c: use GFP_ATOMIC under spin_lock Ben Hutchings
2012-08-17 3:02 ` [ 10/37] net: fix rtnetlink IFF_PROMISC and IFF_ALLMULTI handling Ben Hutchings
2012-08-17 3:02 ` [ 11/37] tcp: perform DMA to userspace only if there is a task waiting for it Ben Hutchings
2012-08-17 3:02 ` [ 12/37] net/tun: fix ioctl() based info leaks Ben Hutchings
2012-08-17 3:02 ` [ 13/37] e1000: add dropped DMA receive enable back in for WoL Ben Hutchings
2012-08-17 3:02 ` [ 14/37] rtlwifi: rtl8192cu: Change buffer allocation for synchronous reads Ben Hutchings
2012-08-17 3:02 ` [ 15/37] hfsplus: fix overflow in sector calculations in hfsplus_submit_bio Ben Hutchings
2012-08-17 3:02 ` [ 16/37] drm/i915: fixup seqno allocation logic for lazy_request Ben Hutchings
2012-08-17 3:03 ` [ 17/37] KVM: VMX: Advertise CPU_BASED_RDPMC_EXITING for nested guests Ben Hutchings
2012-08-17 3:03 ` [ 18/37] mac80211: cancel mesh path timer Ben Hutchings
2012-08-17 3:03 ` [ 19/37] ath9k: Add PID/VID support for AR1111 Ben Hutchings
2012-08-17 3:03 ` [ 20/37] ARM: mxs: Remove MMAP_MIN_ADDR setting from mxs_defconfig Ben Hutchings
2012-08-17 3:03 ` [ 21/37] ALSA: hda - add dock support for Thinkpad T430s Ben Hutchings
2012-08-17 3:03 ` [ 22/37] cfg80211: process pending events when unregistering net device Ben Hutchings
2012-08-17 3:03 ` [ 23/37] rt61pci: fix NULL pointer dereference in config_lna_gain Ben Hutchings
2012-08-17 3:03 ` [ 24/37] iwlwifi: disable greenfield transmissions as a workaround Ben Hutchings
2012-08-17 3:03 ` [ 25/37] ALSA: hda - add dock support for Thinkpad X230 Ben Hutchings
2012-08-17 3:03 ` [ 26/37] e1000e: NIC goes up and immediately goes down Ben Hutchings
2012-08-17 3:03 ` [ 27/37] ALSA: hda - remove quirk for Dell Vostro 1015 Ben Hutchings
2012-08-17 3:03 ` [ 28/37] ALSA: hda - Fix double quirk for Quanta FL1 / Lenovo Ideapad Ben Hutchings
2012-08-17 3:03 ` [ 29/37] ARM: pxa: remove irq_to_gpio from ezx-pcap driver Ben Hutchings
2012-08-17 3:03 ` [ 30/37] Input: eeti_ts: pass gpio value instead of IRQ Ben Hutchings
2012-08-17 3:03 ` [ 31/37] tun: dont zeroize sock->file on detach Ben Hutchings
2012-08-19 17:13 ` Ben Hutchings
2012-08-17 3:03 ` [ 32/37] drm/i915: correctly order the ring init sequence Ben Hutchings
2012-08-17 23:29 ` Herton Ronaldo Krzesinski
2012-08-18 10:04 ` Daniel Vetter
2012-08-19 14:54 ` Ben Hutchings
2012-08-19 19:00 ` Herton Ronaldo Krzesinski
2012-08-17 3:03 ` [ 33/37] s390/compat: fix compat wrappers for process_vm system calls Ben Hutchings
2012-08-17 3:03 ` [ 34/37] s390/compat: fix mmap compat " Ben Hutchings
2012-08-17 3:03 ` [ 35/37] drm/radeon: fix bank tiling parameters on evergreen Ben Hutchings
2012-08-17 3:03 ` [ 36/37] drm/radeon: fix bank tiling parameters on cayman Ben Hutchings
2012-08-17 3:03 ` [ 37/37] drm/radeon: do not reenable crtc after moving vram start address Ben Hutchings
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