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| author | Timmy Li <lixiaoping3@huawei.com> | 2017-05-02 10:46:52 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-02 15:08:21 -0400 |
| commit | 412b65d15a7f8a93794653968308fc100f2aa87c (patch) | |
| tree | 296cb18b4e76197760d2b48f37625792a96c6614 /drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | |
| parent | a9f11f963a546fea9144f6a6d1a307e814a387e7 (diff) | |
| download | linux-412b65d15a7f8a93794653968308fc100f2aa87c.tar.gz linux-412b65d15a7f8a93794653968308fc100f2aa87c.tar.bz2 linux-412b65d15a7f8a93794653968308fc100f2aa87c.zip | |
net: hns: fix ethtool_get_strings overflow in hns driver
hns_get_sset_count() returns HNS_NET_STATS_CNT and the data space allocated
is not enough for ethtool_get_strings(), which will cause random memory
corruption.
When SLAB and DEBUG_SLAB are both enabled, memory corruptions like the
the following can be observed without this patch:
[ 43.115200] Slab corruption (Not tainted): Acpi-ParseExt start=ffff801fb0b69030, len=80
[ 43.115206] Redzone: 0x9f911029d006462/0x5f78745f31657070.
[ 43.115208] Last user: [<5f7272655f746b70>](0x5f7272655f746b70)
[ 43.115214] 010: 70 70 65 31 5f 74 78 5f 70 6b 74 00 6b 6b 6b 6b ppe1_tx_pkt.kkkk
[ 43.115217] 030: 70 70 65 31 5f 74 78 5f 70 6b 74 5f 6f 6b 00 6b ppe1_tx_pkt_ok.k
[ 43.115218] Next obj: start=ffff801fb0b69098, len=80
[ 43.115220] Redzone: 0x706d655f6f666966/0x9f911029d74e35b.
[ 43.115229] Last user: [<ffff0000084b11b0>](acpi_os_release_object+0x28/0x38)
[ 43.115231] 000: 74 79 00 6b 6b 6b 6b 6b 70 70 65 31 5f 74 78 5f ty.kkkkkppe1_tx_
[ 43.115232] 010: 70 6b 74 5f 65 72 72 5f 63 73 75 6d 5f 66 61 69 pkt_err_csum_fai
Signed-off-by: Timmy Li <lixiaoping3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c')
0 files changed, 0 insertions, 0 deletions