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Try to avoid a possible infinite loop when parsing an invalid kernel dump file.

Browse Source 
PR:		108229
Submitted by:	Jessica Han <jessicah juniper net>
Reviewed by:	marcel
MFC after:	1 week
This commit is contained in:
Craig Rodrigues 2007-01-25 06:39:25 +00:00
parent 6c125b8df6
commit c4b1628e07
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=166214
1 changed files with 7 additions and 2 deletions
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9
gnu/usr.bin/gdb/kgdb/kthr.c
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@ -104,12 +104,17 @@ kgdb_thr_init(void)
stoppcbs = lookup("_stoppcbs");
while (paddr != 0) {
if (kvm_read(kvm, paddr, &p, sizeof(p)) != sizeof(p))
if (kvm_read(kvm, paddr, &p, sizeof(p)) != sizeof(p)) {
warnx("kvm_read: %s", kvm_geterr(kvm));
break;
}
addr = (uintptr_t)TAILQ_FIRST(&p.p_threads);
while (addr != 0) {
if (kvm_read(kvm, addr, &td, sizeof(td)) != sizeof(td))
if (kvm_read(kvm, addr, &td, sizeof(td)) !=
sizeof(td)) {
warnx("kvm_read: %s", kvm_geterr(kvm));
break;
}
kt = malloc(sizeof(*kt));
kt->next = first;
kt->kaddr = addr;