Commit 570d8e93 authored by Nicolas Dichtel's avatar Nicolas Dichtel Committed by David S. Miller

taskstats: fix nl parsing in accounting/getdelays.c

The type TASKSTATS_TYPE_NULL should always be ignored.

When jumping to the next attribute, only the length of the current
attribute should be added, not the length of all nested attributes.
This last bug was not visible before commit 80df5542, because the
kernel didn't put more than two nested attributes.

Fixes: a3baf649 ("[PATCH] per-task-delay-accounting: documentation")
Fixes: 80df5542 ("taskstats: use the libnl API to align nlattr on 64-bit")
Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0e7dd0c9
......@@ -505,6 +505,8 @@ int main(int argc, char *argv[])
if (!loop)
goto done;
break;
case TASKSTATS_TYPE_NULL:
break;
default:
fprintf(stderr, "Unknown nested"
" nla_type %d\n",
......@@ -512,7 +514,8 @@ int main(int argc, char *argv[])
break;
}
len2 += NLA_ALIGN(na->nla_len);
na = (struct nlattr *) ((char *) na + len2);
na = (struct nlattr *)((char *)na +
NLA_ALIGN(na->nla_len));
}
break;
......
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