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Move test for zero bufp or size before rseq and wseq calculation. This

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avoids spinning in an infinite loop for some (possibly corrupt?) core
files at work.
This commit is contained in:
emaste 2010-09-22 19:41:01 +00:00
parent 0a89cbc56c
commit 1efa60231a
1 changed files with 3 additions and 1 deletions
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4
gnu/usr.bin/gdb/kgdb/main.c
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@ -222,11 +222,13 @@ kgdb_dmesg(void)
return;
bufp = kgdb_parse("msgbufp->msg_ptr");
size = (int)kgdb_parse("msgbufp->msg_size");
if (bufp == 0 || size == 0)
return;
rseq = (int)kgdb_parse("msgbufp->msg_rseq");
wseq = (int)kgdb_parse("msgbufp->msg_wseq");
rseq = MSGBUF_SEQ_TO_POS(size, rseq);
wseq = MSGBUF_SEQ_TO_POS(size, wseq);
if (bufp == 0 || size == 0 || rseq == wseq)
if (rseq == wseq)
return;
printf("\nUnread portion of the kernel message buffer:\n");