Messages in this thread | | | Subject | Re: [PATCH] kernel/taskstats: fix wrong nla type for {cgroup,task}stats policy | From | Johannes Berg <> | Date | Thu, 26 Mar 2020 22:13:19 +0100 |
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On Thu, 2020-03-26 at 15:11 -0600, David Ahern wrote: > > > na->nla_len = nla_len + 1 + NLA_HDRLEN; > > > > // but this??? the nla_len of a netlink attribute should just be > > // the len ... what's NLA_HDRLEN doing here? this isn't nested > > // here we end up just reserving 1+NLA_HDRLEN too much space
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> I do not get the error message with this change as Johannes points out > above: > > diff --git a/tools/accounting/getdelays.c b/tools/accounting/getdelays.c > index 8cb504d30384..e90fd133df0e 100644 > --- a/tools/accounting/getdelays.c > +++ b/tools/accounting/getdelays.c > @@ -136,7 +136,7 @@ static int send_cmd(int sd, __u16 nlmsg_type, __u32 > nlmsg_pid, > msg.g.version = 0x1; > na = (struct nlattr *) GENLMSG_DATA(&msg); > na->nla_type = nla_type; > - na->nla_len = nla_len + 1 + NLA_HDRLEN; > + na->nla_len = nla_len + NLA_HDRLEN;
Oops, thanks for the correction - indeed NLA_HDRLEN is included, I was wrong above.
johannes
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