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[lwip-devel] [bug #23230] Bug in sys_mbox_trypost, unix port
From: |
Steinar Lieng Fredriksen |
Subject: |
[lwip-devel] [bug #23230] Bug in sys_mbox_trypost, unix port |
Date: |
Sun, 11 May 2008 12:35:53 +0000 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14 |
URL:
<http://savannah.nongnu.org/bugs/?23230>
Summary: Bug in sys_mbox_trypost, unix port
Project: lwIP - A Lightweight TCP/IP stack
Submitted by: steinarlf
Submitted on: Sunday 05/11/2008 at 12:35
Category: Contrib
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Planned Release:
_______________________________________________________
Details:
If sys_mbox_trypost is called on a full sys_mbox, the function does not free
the mbox->mutex. A second sys_mbox_trypost on the same mbox will potentially
block forever.
sys_arch.c:
(227) if ((mbox->last + 1) >= (mbox->first + SYS_MBOX_SIZE))
(228) return ERR_MEM;
Proposed fix:
if ((mbox->last + 1) >= (mbox->first + SYS_MBOX_SIZE)){
sys_sem_signal(mbox->mutex);
return ERR_MEM;
}
_______________________________________________________
Reply to this item at:
<http://savannah.nongnu.org/bugs/?23230>
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- [lwip-devel] [bug #23230] Bug in sys_mbox_trypost, unix port,
Steinar Lieng Fredriksen <=