Wu Fengguang b320e97240 i825xx: fix paging fault on znet_probe() ... In znet_probe(), strncmp() may access beyond 0x100000 and trigger the below oops in kvm. Fix it by limiting the loop under 0x100000-8. I suspect the limit could be further decreased to 0x100000-sizeof(struct netidblk), however no datasheet at hand.. [ 3.744312] BUG: unable to handle kernel paging request at 80100000 [ 3.746145] IP: [<8119d12a>] strncmp+0xc/0x20 [ 3.747446] *pde = 01d10067 *pte = 00100160 [ 3.747493] Oops: 0000 [#1] DEBUG_PAGEALLOC [ 3.747493] Pid: 1, comm: swapper Not tainted 3.6.0-rc1-00018-g57bfc0a #73 Bochs Bochs [ 3.747493] EIP: 0060:[<8119d12a>] EFLAGS: 00010206 CPU: 0 [ 3.747493] EIP is at strncmp+0xc/0x20 [ 3.747493] EAX: 800fff4e EBX: 00000006 ECX: 00000006 EDX: 814d2bb9 [ 3.747493] ESI: 80100000 EDI: 814d2bba EBP: 8e03dfa0 ESP: 8e03df98 [ 3.747493] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 [ 3.747493] CR0: 8005003b CR2: 80100000 CR3: 016f7000 CR4: 00000690 [ 3.747493] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 3.747493] DR6: ffff0ff0 DR7: 00000400 [ 3.747493] Process swapper (pid: 1, ti=8e03c000 task=8e040000 task.ti=8e03c000) [ 3.747493] Stack: [ 3.747493] 800fffff 00000000 8e03dfb4 816a1376 00000006 816a134a 00000000 8e03dfd0 [ 3.747493] 816819b5 816ed1c0 8e03dfe4 00000006 00000123 816ed604 8e03dfe4 81681b29 [ 3.747493] 00000000 81681a5b 00000000 00000000 8134e542 00000000 00000000 00000000 [ 3.747493] Call Trace: [ 3.747493] [<816a1376>] znet_probe+0x2c/0x26b [ 3.747493] [<816a134a>] ? dnet_driver_init+0xf/0xf [ 3.747493] [<816819b5>] do_one_initcall+0x6a/0x110 [ 3.747493] [<81681b29>] kernel_init+0xce/0x14b Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-09-04 15:11:56 -04:00
..
3c505.c	netdev: ethernet dev_alloc_skb to netdev_alloc_skb	2012-02-06 11:52:27 -05:00
3c505.h
3c507.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
82596.c	netdev: ethernet dev_alloc_skb to netdev_alloc_skb	2012-02-06 11:52:27 -05:00
eepro.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
eexpress.c	drivers/net: delete all code/drivers depending on CONFIG_MCA	2012-05-17 16:37:41 -04:00
eexpress.h
ether1.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
ether1.h
Kconfig	drivers/net: delete all code/drivers depending on CONFIG_MCA	2012-05-17 16:37:41 -04:00
lasi_82596.c
lib82596.c
lp486e.c	ethernet: Remove casts to same type	2012-06-06 09:31:33 -07:00
Makefile	drivers/net: delete all code/drivers depending on CONFIG_MCA	2012-05-17 16:37:41 -04:00
ni52.c	netdev: ethernet dev_alloc_skb to netdev_alloc_skb	2012-02-06 11:52:27 -05:00
ni52.h
sni_82596.c
sun3_82586.c	ethernet: Remove casts to same type	2012-06-06 09:31:33 -07:00
sun3_82586.h
znet.c	i825xx: fix paging fault on znet_probe()	2012-09-04 15:11:56 -04:00