On Thu, Jul 10, 2025 at 06:27:59PM +0200, Nemanja Simonovic wrote: > I tried asking this on users list but got no reply.
I saw it but didn't have time to reply yet. > When trying to load modules to rump_server I am getting kernel > "panic: uvm_km_alloc failed". Both with -m parameter and with > rump.modload. That message comes from: https://nxr.netbsd.org/xref/src/sys/rump/librump/rumpkern/vm.c#888 > I not sure if I am doing something wrong or hitting a bug? We do have 3 ATF tests that deal with rump module loading: src/tests/rump/modautoload/t_modautoload.c src/tests/rump/rumpkern/t_modcmd.c src/tests/rump/rumpkern/t_modlinkset.c These tests pass OK: https://releng.netbsd.org/b5reports/amd64/2025/2025.07.10.11.44.12/test.log But the use neither -m nor rump.modload. Could be the implementation for -m or rump.modload has bitrotted. I don't know. Could be you are doing something wrong. Have you tried debugging this with gdb? Set a break point in rumpkern/vmc line 878, the call to rumpuser_anonmap(), and step through that function and see where it fails. --chris
