From: Luis Henriques <luis.henriques@canonical.com>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
kernel-team@lists.ubuntu.com
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
"David S. Miller" <davem@davemloft.net>,
Luis Henriques <luis.henriques@canonical.com>
Subject: [PATCH 3.16.y-ckt 094/126] sh_eth: fix kernel oops in skb_put()
Date: Wed, 6 Jan 2016 10:37:03 +0000 [thread overview]
Message-ID: <1452076655-12851-95-git-send-email-luis.henriques@canonical.com> (raw)
In-Reply-To: <1452076655-12851-1-git-send-email-luis.henriques@canonical.com>
3.16.7-ckt22 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
commit 248be83dcb3feb3f6332eb3d010a016402138484 upstream.
In a low memory situation the following kernel oops occurs:
Unable to handle kernel NULL pointer dereference at virtual address 00000050
pgd = 8490c000
[00000050] *pgd=4651e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in:
CPU: 0 Not tainted (3.4-at16 #9)
PC is at skb_put+0x10/0x98
LR is at sh_eth_poll+0x2c8/0xa10
pc : [<8035f780>] lr : [<8028bf50>] psr: 60000113
sp : 84eb1a90 ip : 84eb1ac8 fp : 84eb1ac4
r10: 0000003f r9 : 000005ea r8 : 00000000
r7 : 00000000 r6 : 940453b0 r5 : 00030000 r4 : 9381b180
r3 : 00000000 r2 : 00000000 r1 : 000005ea r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c53c7d Table: 4248c059 DAC: 00000015
Process klogd (pid: 2046, stack limit = 0x84eb02e8)
[...]
This is because netdev_alloc_skb() fails and 'mdp->rx_skbuff[entry]' is left
NULL but sh_eth_rx() later uses it without checking. Add such check...
Reported-by: Yasushi SHOJI <yashi@atmark-techno.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
drivers/net/ethernet/renesas/sh_eth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 7622213beef1..d11546c2e902 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1427,6 +1427,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
if (mdp->cd->shift_rd0)
desc_status >>= 16;
+ skb = mdp->rx_skbuff[entry];
if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
RD_RFS5 | RD_RFS6 | RD_RFS10)) {
ndev->stats.rx_errors++;
@@ -1442,12 +1443,11 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
ndev->stats.rx_missed_errors++;
if (desc_status & RD_RFS10)
ndev->stats.rx_over_errors++;
- } else {
+ } else if (skb) {
if (!mdp->cd->hw_swap)
sh_eth_soft_swap(
phys_to_virt(ALIGN(rxdesc->addr, 4)),
pkt_len + 2);
- skb = mdp->rx_skbuff[entry];
mdp->rx_skbuff[entry] = NULL;
if (mdp->cd->rpadir)
skb_reserve(skb, NET_IP_ALIGN);
next prev parent reply other threads:[~2016-01-06 10:52 UTC|newest]
Thread overview: 128+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-06 10:35 [3.16.y-ckt stable] Linux 3.16.7-ckt22 stable review Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 001/126] iio: lpc32xx_adc: fix warnings caused by enabling unprepared clock Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 002/126] iio:ad5064: Make sure ad5064_i2c_write() returns 0 on success Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 003/126] iio: ad5064: Fix ad5629/ad5669 shift Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 004/126] iio:ad7793: Fix ad7785 product ID Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 005/126] x86/fpu: Fix 32-bit signal frame handling Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 006/126] iio: adc: xilinx: Fix VREFN scale Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 007/126] drm/i915: quirk backlight present on Macbook 4, 1 Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 008/126] USB: qcserial: Add support for Quectel EC20 Mini PCIe module Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 009/126] USB: serial: option: add support for Novatel MiFi USB620L Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 010/126] USB: ti_usb_3410_5052: Add Honeywell HGI80 ID Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 011/126] drm/i915: get runtime PM reference around GEM set_caching IOCTL Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 012/126] drm/radeon: unconditionally set sysfs_initialized Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 013/126] USB: qcserial: Fix support for HP lt4112 LTE/HSPA+ Gobi 4G Modem Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 014/126] arm64: kernel: pause/unpause function graph tracer in cpu_suspend() Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 015/126] usb: dwc3: gadget: let us set lower max_speed Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 016/126] usb: chipidea: debug: disable usb irq while role switch Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 017/126] xhci: Workaround to get Intel xHCI reset working more reliably Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 018/126] xhci: Fix a race in usb2 LPM resume, blocking U3 for usb2 devices Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 019/126] x86/cpu: Fix SMAP check in PVOPS environments Luis Henriques
2016-01-06 10:35 ` Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 020/126] arm64: restore bogomips information in /proc/cpuinfo Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 021/126] USB: option: add XS Stick W100-2 from 4G Systems Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 022/126] usblp: do not set TASK_INTERRUPTIBLE before lock Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 023/126] fat: fix fake_offset handling on error path Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 024/126] kernel/signal.c: unexport sigsuspend() Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 025/126] ocfs2: fix umask ignored issue Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 026/126] parisc: Drop unused MADV_xxxK_PAGES flags from asm/mman.h Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 027/126] mmc: remove bondage between REQ_META and reliable write Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 028/126] tools/net: Use include/uapi with __EXPORTED_HEADERS__ Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 029/126] packet: do skb_probe_transport_header when we actually have data Luis Henriques
2016-01-06 10:35 ` [PATCH 3.16.y-ckt 030/126] packet: only allow extra vlan len on ethernet devices Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 031/126] packet: fix tpacket_snd max frame len Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 032/126] sctp: translate host order to network order when setting a hmacid Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 033/126] net/mlx4_core: Avoid returning success in case of an error flow Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 034/126] usb: musb: core: fix order of arguments to ulpi write callback Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 035/126] FS-Cache: Add missing initialization of ret in cachefiles_write_page() Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 036/126] macvlan: fix leak in macvlan_handle_frame Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 037/126] ARC: Fix silly typo in MAINTAINERS file Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 038/126] unix: avoid use-after-free in ep_remove_wait_queue Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 039/126] packet: always probe for transport header Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 040/126] packet: infer protocol from ethernet header if unset Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 041/126] ip_tunnel: disable preemption when updating per-cpu tstats Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 042/126] snmp: Remove duplicate OUTMCAST stat increment Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 043/126] net: qmi_wwan: add XS Stick W100-2 from 4G Systems Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 044/126] tcp: md5: fix lockdep annotation Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 045/126] tcp: initialize tp->copied_seq in case of cross SYN connection Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 046/126] net, scm: fix PaX detected msg_controllen overflow in scm_detach_fds Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 047/126] net: ipmr: fix static mfc/dev leaks on table destruction Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 048/126] net: ip6mr: " Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 049/126] broadcom: fix PHY_ID_BCM5481 entry in the id table Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 050/126] ipv6: distinguish frag queues by device for multicast and link-local packets Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 051/126] ipv6: add complete rcu protection around np->opt Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 052/126] net/neighbour: fix crash at dumping device-agnostic proxy entries Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 053/126] ipv6: sctp: implement sctp_v6_destroy_sock() Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 054/126] xfs: allow inode allocations in post-growfs disk space Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 055/126] ALSA: usb-audio: add packet size quirk for the Medeli DD305 Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 056/126] ALSA: usb-audio: prevent CH345 multiport output SysEx corruption Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 057/126] ALSA: usb-audio: work around CH345 input " Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 058/126] dm thin: restore requested 'error_if_no_space' setting on OODS to WRITE transition Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 059/126] dm: fix ioctl retry termination with signal Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 060/126] MIPS: KVM: Fix ASID restoration logic Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 061/126] MIPS: KVM: Fix CACHE immediate offset sign extension Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 062/126] MIPS: KVM: Uninit VCPU in vcpu_create error path Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 063/126] ALSA: hda - Add fixup for Acer Aspire One Cloudbook 14 Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 064/126] mac: validate mac_partition is within sector Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 065/126] ALSA: hda - Apply HP headphone fixups more generically Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 066/126] powerpc/tm: Block signal return setting invalid MSR state Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 067/126] powerpc/tm: Check for already reclaimed tasks Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 068/126] ARC: dw2 unwind: Remove falllback linear search thru FDE entries Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 069/126] fix sysvfs symlinks Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 070/126] vfs: Make sendfile(2) killable even better Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 071/126] vfs: Avoid softlockups with sendfile(2) Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 072/126] nfs4: start callback_ident at idr 1 Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 073/126] ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3 Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 074/126] arm64: KVM: Fix AArch32 to AArch64 register mapping Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 075/126] drm/radeon: make rv770_set_sw_state failures non-fatal Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 076/126] ALSA: hda - Fix noise on Gigabyte Z170X mobo Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 077/126] drm/radeon: make some dpm errors debug only Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 078/126] nfs: if we have no valid attrs, then don't declare the attribute cache valid Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 079/126] xen/gntdev: Grant maps should not be subject to NUMA balancing Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 080/126] iscsi-target: Fix rx_login_comp hang after login failure Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 081/126] target: Fix race for SCF_COMPARE_AND_WRITE_POST checking Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 082/126] target: fix COMPARE_AND_WRITE non zero SGL offset data corruption Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 083/126] ARM: dts: Kirkwood: Fix QNAP TS219 power-off Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 084/126] netfilter: ipt_rpfilter: remove the nh_scope test in rpfilter_lookup_reverse Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 085/126] netfilter: nf_tables: fix bogus warning in nft_data_uninit() Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 086/126] netfilter: ip6t_SYNPROXY: fix NULL pointer dereference Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 087/126] RDS: fix race condition when sending a message on unbound socket Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 088/126] gre6: allow to update all parameters via rtnl Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 089/126] atl1c: Improve driver not to do order 4 GFP_ATOMIC allocation Luis Henriques
2016-01-06 10:36 ` [PATCH 3.16.y-ckt 090/126] sctp: use the same clock as if sock source timestamps were on Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 091/126] sctp: update the netstamp_needed counter when copying sockets Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 092/126] ipv6: sctp: clone options to avoid use after free Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 093/126] net: add validation for the socket syscall protocol argument Luis Henriques
2016-01-06 10:37 ` Luis Henriques [this message]
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 095/126] vlan: Fix untag operations of stacked vlans with REORDER_HEADER off Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 096/126] skbuff: Fix offset error in skb_reorder_vlan_header Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 097/126] pptp: verify sockaddr_len in pptp_bind() and pptp_connect() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 098/126] bluetooth: Validate socket address length in sco_sock_bind() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 099/126] af_unix: Revert 'lock_interruptible' in stream receive code Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 100/126] ip6mr: call del_timer_sync() in ip6mr_free_table() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 101/126] drm/i915: Disable PSMI sleep messages on all rings around context switches Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 102/126] crypto: nx - Fix timing leak in GCM and CCM decryption Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 103/126] crypto: talitos - Fix timing leak in ESP ICV verification Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 104/126] ASoC: wm8962: correct addresses for HPF_C_0/1 Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 105/126] mac80211: mesh: fix call_rcu() usage Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 106/126] mac80211: ensure we don't update tx power on a non-running sdata Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 107/126] can: sja1000: clear interrupts on start Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 108/126] ring-buffer: Update read stamp with first real commit on page Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 109/126] block: Always check queue limits for cloned requests Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 110/126] Fix a memory leak in scsi_host_dev_release() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 111/126] wan/x25: Fix use-after-free in x25_asy_open_tty() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 112/126] mac80211: do not actively scan DFS channels Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 113/126] locking: Add WARN_ON_ONCE lock assertion Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 114/126] drm: Fix an unwanted master inheritance v2 Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 115/126] sched/core: Clear the root_domain cpumasks in init_rootdomain() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 116/126] x86/signal: Fix restart_syscall number for x32 tasks Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 117/126] isdn: Partially revert debug format string usage clean up Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 118/126] remoteproc: avoid stack overflow in debugfs file Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 119/126] net: mvneta: add configuration for MBUS windows access protection Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 120/126] net: mvneta: fix bit assignment in MVNETA_RXQ_CONFIG_REG Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 121/126] net: mvneta: fix bit assignment for RX packet irq enable Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 122/126] ipv4: igmp: Allow removing groups from a removed interface Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 123/126] sched/core: Remove false-positive warning from wake_up_process() Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 124/126] btrfs: fix signed overflows in btrfs_sync_file Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 125/126] KEYS: Fix race between read and revoke Luis Henriques
2016-01-06 10:37 ` [PATCH 3.16.y-ckt 126/126] KVM: x86: Reload pit counters for all channels when restoring state Luis Henriques
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