similar to: [LLVMdev] Dragonegg stack variables reorderings

Hi Duncan, > I think this is probably due to stack variables being output lazily, i.e. > when first used. For example, if you declare variables A and B but use B > first then probably B will get output to the LLVM IR first. I think you're right: I fixed my particular problem by initializing all stack variables. > I guess I could arrange for them all to be output in one fell

> I need this to make RIPE (https://github.com/johnwilander/RIPE) work. RIPE is > the "runtime intrusion prevention evaluator" and it is a program that performs > a lot of different attacks on itself. It relies on the order of stack > variables for its stack smashing attacks. Interesting, how much of other undefined / implementation-defined behaviors it uses then? :) --

If you compile this with optimizations, then the 'canary()' function should be totally inlined into the 'main()' function. In that case, the cost of the stack protectors will be very small compared to the loop. -bw On Mar 9, 2012, at 2:52 AM, Job Noorman <jobnoorman at gmail.com> wrote: > I have a question about the performance of the implementation of the stack >

I have a question about the performance of the implementation of the stack protector in LLVM. Consider the following C program: ===== void canary() { char buf[20]; buf[0]++; } int main() { int i; for (i = 0; i < 1000000000; ++i) canary(); return 0; } ===== This should definately run slower when stack protection is enabled, right? I have measured the runtime of

Looks like one of my name servers (CentOS 5) gets a lot of malicious queries. The cpu load is constantly about 3 %. I put on stricter limits on who is allowed recursive queries, but this does not affect the CPU load. I also updated bind. I temporarily turned on querylog (command: rndc querylog), and noticed that I get over 200 queries like this per second: > Aug 17 07:41:38 mx2

Hi, in src/lib-smtp/smtp-address.c line 759 the localpart is compared with null_strcmp, which does not ignore the case. While this is the correct behavior (according to the RFC) it causes problems in real life. In my case the vacation notices are not sent, if someone writes to First.Last at ruhr-uni-bochum.de because :addresses contains (only) first.last at ruhr-uni-bochum.de. Regards,

As I reported a while back rsync doesn't handle metadata (permissions and ownership) in dryrun mode. I offered to make a patch and that offer still stands. I didn't have the time for it until now and want to pick it up again. I had some ugly hack back then but I want to redo it in a clean way. I would like some input on my thoughts. IMHO, it would be ideally if the check for dry_run

Hi Karl, I would like to send you the output, but after installing strace on my FreeBSD, i get the following: <p>/usr/local/bin/strace -o output -s 100 -f /usr/local/bin/ices /usr/local/etc/icecast/ices.xml strace: open("/proc/...", ...): No such file or directory trouble opening proc file Is there another way to send you a trace? <p><p><p>On Mon, 2003-08-11

Just throwing out some thoughts here. I know Timo has high standards and is trying to make 1.0 bug free before calling it 1.0. But I want to argue for an earlier less perfect 1.0. Dovecot is already way past the quality of most 1.0 releases. So it is good enough by common standards. No one really expects a 1.0 release to be perfect. But - some people don't consider a product ripe until it

It appears to be a low-level attack, not so frequent as to be banned permanently, just a number of times a day. I did google on this, and I gather it's looking for phpmyadmin. We've been getting one from one specific network in Russia for weeks Here are more information about 91.201.64.24: [Querying whois.ripe.net] [whois.ripe.net] <snip> % Information related to '91.201.64.0

Dear colleagues, experimenting with new amd64-based router we found strange re(4) behaviour when working in autoselect media mode: whenever promisc mode turned on, renegotiating occurs, leading to 3 to 45 (depending on STP settings on the switch) network unavailability. Moreover, some other re(4) setting changes seem to disturb link state unneededly (such as ifconfig re0 -vlanhwtag) The most

There is a samba compiled without winbind support, with the following options configured: workgroup = MYDOMAIN security = domain allow trusted domains = yes add user script = /usr/sbin/pw useradd %u -m -Y -M 755 When a Windows user MYDOMAIN\john connects to the samba server, he is mapped to the Unix user john. If there is no Unix user "john", it is created by the add user script. How

Colleagues, I have encountered a weird problem (FreeBSD 8.2, samba34-3.4.14). A user can create files in a samba share but cannot delete files from it (unless she is the owner of the file). The user is a member of a group with rwx permissions on this directory granted by a Posix ACL entry. The user can create and delete files in the directory from the shell on the file server (which is correct

Hi, is it possible to randomize extension which would be choosed by Dial()? I would like to forward phone calls to one of sales rep in randomized way (not to harm anyone;) ). tia mazek -- http://www.marcinmazurek.com/ ::: nic-hdl: MM3380-RIPE GnuPG 6687 E661 98B0 AEE6 DA8B 7F48 AEE4 776F 5688 DC89

Colleagues, I am running smbd in a setup described in http://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/idmapper.html#id2604553 under "Winbind is not used; users and groups are local". Samba is running in the security=domain mode, but all Windows users are being mapped to Unix users in /etc/passwd. Now I need to run winbindd for Squid authentication. The problem is, as soon as

Joseph Tam wrote: > > > However, I often read and modify the mailboxes locally with mutt (e.g. > > append and delete mails). > > > > Should I expect any problems wit Dovecot indexes etc? What if I even > > do "rm ~/Mail/some/mailbox", will Dovecot be mad at me? > > I do it all the time. Works fine. Great, thank you! > > As others have

Colleagues, 3 of 4 times this machine failed to boot, panicing somewhere in late kernel initialization phase (before /sbin/init is executed) I have serial console and KDB enabled, so can do experiments. Last two crashes: Fatal trap 12: page fault while in kernel mode fault virtual address = 0x8 fault code = supervisor read data, page not present instruction pointer =

Hello! Port security/portaudit reports the following problem: Affected package: FreeBSD-491000 Type of problem: multiple vulnerabilities in the cvs server code. Reference: <http://www.FreeBSD.org/ports/portaudit/d2102505-f03d-11d8-81b0-000347a4fa7d.htm l> Note: To disable this check add the uuid to `portaudit_fixed' in /usr/local/etc/portaudit.conf I have 2 related questions: 1)

On Sun, Apr 19, 2020 at 9:26 AM Anand Buddhdev <anandb at ripe.net> wrote: > > On 19/04/2020 14:58, Jeffrey Walton wrote: > > Hi Jeffrey, > > > The offending host is 59.64.129.175. To err on the side of caution we > > attempted to block the entire netblock. According to whois data, > > that's 59.64.128.0-59.64.159.255. > > > > iptables -A

On 2019-12-10, Reid Kleckner via llvm-dev wrote: >I bet if you use `-target i386-linux` it will work. You passed `-target -i386`, >which is a triple with no OS, so Clang is doing something arbitrary. Grepping >Clang sources shows that this flag is handled in an OS-specific manner: > >$ git grep -i fuse_init_array ../clang/lib/Driver/ >../clang/lib/Driver/ToolChains/Fuchsia.cpp: