Sergei Shtylyov 248be83dcb sh_eth: fix kernel oops in skb_put() ... 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>		2015-12-05 17:46:11 -05:00
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Kconfig	drivers/net: remove all references to obsolete Ethernet-HOWTO	2015-06-23 06:50:35 -07:00
Makefile	Renesas Ethernet AVB PTP clock driver	2015-06-11 00:24:12 -07:00
ravb_main.c	ravb: fix WARNING in __free_irq()	2015-11-18 22:03:53 -05:00
ravb_ptp.c	renesas: missing unlock on error path	2015-06-25 02:13:02 -07:00
ravb.h	ravb: Add support for r8a7795 SoC	2015-10-03 05:05:21 -07:00
sh_eth.c	sh_eth: fix kernel oops in skb_put()	2015-12-05 17:46:11 -05:00
sh_eth.h	sh_eth: fix typo in RX descriptor bit name	2015-11-02 23:01:06 -05:00