mirror of https://gitee.com/openkylin/linux.git
[PATCH] ipw2200: fix error log offset calculation
This fixes a slab corruption issue in the ipw2200 driver: it essentially multiplied the error log number _twice_ by the size of the error element entry (once explicitly in the code, and once implicitly as part of the regular pointer arithmetic). Cc: Henrik Brix Andersen <brix@gentoo.org> Cc: Bernard Blackham <bernard@blackham.com.au> Cc: Zilvinas Valinskas <zilvinas@gemtek.lt> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org> --
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@ -1110,8 +1110,7 @@ static struct ipw_fw_error *ipw_alloc_error_log(struct ipw_priv *priv)
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error->elem_len = elem_len;
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error->log_len = log_len;
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error->elem = (struct ipw_error_elem *)error->payload;
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error->log = (struct ipw_event *)(error->elem +
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(sizeof(*error->elem) * elem_len));
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error->log = (struct ipw_event *)(error->elem + elem_len);
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ipw_capture_event_log(priv, log_len, error->log);
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