try this?
Index: vmm.c
===================================================================
RCS file: /cvs/src/usr.sbin/vmd/vmm.c,v
diff -u -p -r1.135 vmm.c
--- vmm.c 14 Jan 2026 03:09:05 -0000 1.135
+++ vmm.c 13 Mar 2026 17:28:39 -0000
@@ -72,6 +72,8 @@ vmm_run(struct privsep *ps, struct privs
*/
if (unveil(env->argv0, "x") == -1)
fatal("unveil %s", env->argv0);
+ if (unveil("/dev/null", "rw") == -1)
+ fatal("unveil /dev/null", env->argv0);
if (unveil(NULL, NULL) == -1)
fatal("unveil lock");
On 2026/03/13 17:04, Alexander Bluhm wrote:
> On Fri, Mar 13, 2026 at 08:28:04PM +0500, Nikita Kandinov wrote:
> > -current 7.9-beta GENERIC.MP#307 amd64
> >
> > vmm can not start any virtual machine. The problem occures since
> > 2026-03-13-0105 snapshot, build date Thu Mar 12 17:18:18 UTC 2026.
> >
> > On the previous snapshots (e.g. by 2026-03-12-0105, 2026-03-11-0105)
> > there is no trouble with vmm.
> >
> > Log:
> > vmctl: start vm command failed: Cannot allocate memory
> > Mar 13 18:54:56 openbsd vmd[20675]: debian: failed to start vm
>
> Same problem here, looks like a pledge violation in libc
>
> kern.version=OpenBSD 7.9-beta (GENERIC.MP) #307: Thu Mar 12 18:12:37 MDT 2026
> [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>
> 18913 vmd CALL open(0x8b9fe1e9c73,0x2<O_RDWR>)
> 18913 vmd PLDG open, "rpath", errno 1 Operation not permitted
> 18913 vmd PSIG SIGABRT SIG_DFL
>
> Core was generated by `vmd'.
> Program terminated with signal SIGABRT, Aborted.
> #0 _thread_sys_open () at /tmp/-:2
>
> warning: 2 /tmp/-: No such file or directory
> (gdb) bt
> #0 _thread_sys_open () at /tmp/-:2
> #1 0xfb35274babbbaf91 in ?? ()
> #2 0x00000e6191e91ec1 in _libc_open_cancel (path=0xe5ea45cdc73 "/dev/null",
> flags=2) at /usr/src/lib/libc/sys/w_open.c:36
> #3 0x00000e5ea45e0e03 in vmm_start_vm (imsg=0x7a6e5e452010,
> id=0x7a6e5e451fb4, pid=0x7a6e5e451fb0) at /usr/src/usr.sbin/vmd/vmm.c:698
> #4 0x00000e5ea45e0468 in vmm_dispatch_parent (fd=<optimized out>,
> p=<optimized out>, imsg=0x7a6e5e452010) at /usr/src/usr.sbin/vmd/vmm.c:144
> #5 0x00000e5ea45dd770 in proc_dispatch (fd=3, event=<optimized out>,
> arg=0xe60c0b906b8) at /usr/src/usr.sbin/vmd/proc.c:487
> #6 0x00000e615502d038 in event_process_active (base=0xe611988ec00)
> at /usr/src/lib/libevent/event.c:333
> #7 event_base_loop (base=0xe611988ec00, flags=0)
> at /usr/src/lib/libevent/event.c:483
> #8 0x00000e5ea45ddfe4 in proc_run (ps=0xe60c0b906a0,
> p=0xe5ea4602b60 <procs+128>, procs=<optimized out>, nproc=1,
> run=0xe5ea45dffc0 <vmm_run>, arg=0x0) at /usr/src/usr.sbin/vmd/proc.c:433
> #9 0x00000e5ea45dd4eb in proc_init (ps=0xe5ea45cdc73, procs=<optimized out>,
> nprocs=0, debug=<optimized out>, argc=2, argv=0x0, proc_id=PROC_VMM)
> at /usr/src/usr.sbin/vmd/proc.c:192
> #10 0x00000e5ea45d88c6 in main (argc=<optimized out>, argv=0x7a6e5e4522a8)
> at /usr/src/usr.sbin/vmd/vmd.c:705
>
