[Bug libc/5379] New: sunrpc: Fix hangs in UDP RPC calls

[Bug libc/5379] New: sunrpc: Fix hangs in UDP RPC calls

[pasky at suse dot cz]

clntudp_call() does not properly implement re-poll()ing in case the poll() has
been interrupted.

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           Summary: sunrpc: Fix hangs in UDP RPC calls
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: pasky at suse dot cz
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=5379

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[Bug libc/5379] sunrpc: Fix hangs in UDP RPC calls

[pasky at suse dot cz]

------- Additional Comments From pasky at suse dot cz  2007-11-21 03:29 -------
Created an attachment (id=2102)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2102&action=view)
Proposed patch


-- 


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[Bug libc/5379] sunrpc: Fix hangs in UDP RPC calls

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2007-11-23 01:32 -------
The patch is not correct.  It goes to the extreme other side.  Now a few signals
sent in short succession can cause the total timeout time to be far too short.

To fix this it will be necessary to measure how long the poll calls slept and
adjust the total time to this.

-- 


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[Bug libc/5379] sunrpc: Fix hangs in UDP RPC calls

[mikeh at fesnel dot com]

------- Additional Comments From mikeh at fesnel dot com  2008-10-10 19:19 -------
Created an attachment (id=2993)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2993&action=view)
Proposed patch

Here's a different patch for the same bug. This deducts time spent in poll(2)
for each EINTR and reduces the timeout for the subsequent calls to poll(2).
Warning: This patch should compile but I don't have the ability to test it.

Caveats: No way to distinguish the time spent in the signal handler that
interrupted poll(2) from time actually spent polling.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
Attachment #2102 is|0                           |1
           obsolete|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=5379

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[Bug libc/5379] sunrpc: Fix hangs in UDP RPC calls

[mikeh at fesnel dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikeh at fesnel dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=5379

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[Bug libc/5379] sunrpc: Fix hangs in UDP RPC calls

[mikeh at fesnel dot com]

------- Additional Comments From mikeh at fesnel dot com  2008-10-10 20:29 -------
Created an attachment (id=2994)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2994&action=view)
Proposed patch

Updated patch to use larger integer type to store milliseconds.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
Attachment #2993 is|0                           |1
           obsolete|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=5379

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