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/openbmc/linux/drivers/net/ethernet/hisilicon/hns3/hns3pf/ |
H A D | hclge_debugfs.c | diff 5e3d20617b055e725e785e0058426368269949f3 Tue Aug 08 21:09:02 CDT 2023 Hao Chen <chenhao418@huawei.com> net: hns3: fix strscpy causing content truncation issue
hns3_dbg_fill_content()/hclge_dbg_fill_content() is aim to integrate some items to a string for content, and we add '\n' and '\0' in the last two bytes of content.
strscpy() will add '\0' in the last byte of destination buffer(one of items), it result in finishing content print ahead of schedule and some dump content truncation.
One Error log shows as below: cat mac_list/uc UC MAC_LIST:
Expected: UC MAC_LIST: FUNC_ID MAC_ADDR STATE pf 00:2b:19:05:03:00 ACTIVE
The destination buffer is length-bounded and not required to be NUL-terminated, so just change strscpy() to memcpy() to fix it.
Fixes: 1cf3d5567f27 ("net: hns3: fix strncpy() not using dest-buf length as length issue") Signed-off-by: Hao Chen <chenhao418@huawei.com> Signed-off-by: Jijie Shao <shaojijie@huawei.com> Link: https://lore.kernel.org/r/20230809020902.1941471-1-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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/openbmc/linux/drivers/net/ethernet/hisilicon/hns3/ |
H A D | hns3_debugfs.c | diff 5e3d20617b055e725e785e0058426368269949f3 Tue Aug 08 21:09:02 CDT 2023 Hao Chen <chenhao418@huawei.com> net: hns3: fix strscpy causing content truncation issue
hns3_dbg_fill_content()/hclge_dbg_fill_content() is aim to integrate some items to a string for content, and we add '\n' and '\0' in the last two bytes of content.
strscpy() will add '\0' in the last byte of destination buffer(one of items), it result in finishing content print ahead of schedule and some dump content truncation.
One Error log shows as below: cat mac_list/uc UC MAC_LIST:
Expected: UC MAC_LIST: FUNC_ID MAC_ADDR STATE pf 00:2b:19:05:03:00 ACTIVE
The destination buffer is length-bounded and not required to be NUL-terminated, so just change strscpy() to memcpy() to fix it.
Fixes: 1cf3d5567f27 ("net: hns3: fix strncpy() not using dest-buf length as length issue") Signed-off-by: Hao Chen <chenhao418@huawei.com> Signed-off-by: Jijie Shao <shaojijie@huawei.com> Link: https://lore.kernel.org/r/20230809020902.1941471-1-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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