Stefan Assmann fae5ecaee3 igbvf: clear buffer_info->dma after dma_unmap_single() ... The driver doesn't clear buffer_info->dma after calling dma_unmap_single() in all cases. This has been discovered by changing the mtu twice, which caused the following backtrace. [ 68.569280] WARNING: CPU: 2 PID: 1860 at drivers/iommu/intel-iommu.c:3517 intel_unmap+0x20c/0x220() [ 68.579392] Driver unmaps unmatched page at PFN fffc2a40 [ 68.585322] Modules linked in: igbvf ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat kvm_intel kvm igb megs [ 68.599163] CPU: 2 PID: 1860 Comm: ifconfig Not tainted 4.2.0-rc4+ #147 [ 68.606543] Hardware name: IBM -[546025Z]-/00Y7630, BIOS -[VVE134TUS-1.51]- 10/17/2013 [ 68.615473] 0000000000000dbd ffff88046441bb08 ffffffff81a5ad0b ffffffff81e2f9ea [ 68.623775] ffff88046441bb58 ffff88046441bb48 ffffffff81056b55 ffff88047fc583c0 [ 68.632075] 0000000000000000 ffff880469a8e600 00000000fffc2a40 ffff880465b32098 [ 68.640375] Call Trace: [ 68.643109] [<ffffffff81a5ad0b>] dump_stack+0x48/0x5d [ 68.648844] [<ffffffff81056b55>] warn_slowpath_common+0x95/0xe0 [ 68.655549] [<ffffffff81056c56>] warn_slowpath_fmt+0x46/0x70 [ 68.661960] [<ffffffff8158a614>] ? find_iova+0x54/0x90 [ 68.667791] [<ffffffff815988dc>] intel_unmap+0x20c/0x220 [ 68.673815] [<ffffffff8159891e>] intel_unmap_page+0xe/0x10 [ 68.680038] [<ffffffffa0067536>] igbvf_clean_rx_ring+0x96/0x370 [igbvf] [ 68.687516] [<ffffffffa0067915>] igbvf_down+0x105/0x110 [igbvf] [ 68.694219] [<ffffffffa0067beb>] igbvf_change_mtu+0x16b/0x180 [igbvf] [...] Signed-off-by: Stefan Assmann <sassmann@kpanic.de> Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>		2015-08-18 14:06:06 -07:00
..
defines.h	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00
ethtool.c	igbvf: cleanup msleep() and min/max() usage	2015-02-23 17:11:54 -08:00
igbvf.h	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00
Makefile	igbvf: change copyright date	2012-02-03 03:07:15 -08:00
mbx.c	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00
mbx.h	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00
netdev.c	igbvf: clear buffer_info->dma after dma_unmap_single()	2015-08-18 14:06:06 -07:00
regs.h	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00
vf.c	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00
vf.h	igbvf: Fix code comments and whitespace	2015-02-23 17:11:54 -08:00