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rump_server, "panic: uvm_km_alloc failed" on module load



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.

I not sure if I am doing something wrong or hitting a bug?


-------------------------------------------------------------
bash-5.2$ uname -a
NetBSD netbsdb.dev63.com 10.1 NetBSD 10.1 (GENERIC) #0: Mon Dec 16 13:08:11 UTC 2024 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64

bash-5.2$ rump_server -v -lrumpvfs -m /stand/amd64/10.1/modules/tmpfs/tmpfs.kmod unix://sock
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
[ 1.0000000] 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, [ 1.0000000] 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
[   1.0000000]     2024
[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[ 1.0000000] The Regents of the University of California. All rights reserved.

[   1.0000000] NetBSD 10.1 (RUMP-ROAST)
[   1.0000000] total memory = unlimited (host limit)
[   1.0000000] entropy: ready
[   1.0000000] timecounter: Timecounters tick every 10.000 msec
[ 1.0000040] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
[   1.0000050] cpu0 at thinair0: rump virtual cpu
[   1.0000050] cpu1 at thinair0: rump virtual cpu
[   1.0000050] root file system type: rumpfs
[   1.0000050] kern.module.path=/stand/amd64/10.1/modules
[   1.0200050] panic: uvm_km_alloc failed
[   1.0200050] rump kernel halting...
halted



---------------
bash-5.2$ rump_server -v -lrumpvfs -s  unix://sock
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
[ 1.0000000] 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, [ 1.0000000] 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
[   1.0000000]     2024
[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[ 1.0000000] The Regents of the University of California. All rights reserved.

[   1.0000000] NetBSD 10.1 (RUMP-ROAST)
[   1.0000000] total memory = unlimited (host limit)
[   1.0000000] entropy: ready
[   1.0000000] timecounter: Timecounters tick every 10.000 msec
[ 1.0000040] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
[   1.0000050] cpu0 at thinair0: rump virtual cpu
[   1.0000050] cpu1 at thinair0: rump virtual cpu
[   1.0000050] root file system type: rumpfs
[   1.0000050] kern.module.path=/stand/amd64/10.1/modules
[  52.4700050] panic: uvm_km_alloc failed
[  52.4700050] rump kernel halting...
halted
Abort trap (core dumped)

# panic is after
bash-5.2$ rump.modload /stand/amd64/10.1/modules/msdos/msdos.kmod

-------------------------------------------------------------
arm64# uname -a
NetBSD arm64 10.99.14 NetBSD 10.99.14 (GENERIC64) #0: Wed Apr 23 17:20:11 CEST 2025 nemanja%netbsdb.dev63.com@localhost:/home/nemanja/source/evbarm-aarch64/sys/arch/evbarm/compile/GENERIC64 evbarm

arm64# rump_server -v -m /stand/evbarm/10.99.14/modules/tmpfs/tmpfs.kmod unix://sock
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
[ 1.0000000] 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, [ 1.0000000] 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
[   1.0000000]     2024, 2025
[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[ 1.0000000] The Regents of the University of California. All rights reserved.

[   1.0000000] NetBSD 10.99.14 (RUMP-ROAST)
[   1.0000000] total memory = unlimited (host limit)
[   1.0000000] entropy: ready
[   1.0000000] timecounter: Timecounters tick every 10.000 msec
[ 1.0000040] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
[   1.0000050] cpu0 at thinair0: rump virtual cpu
[   1.0000050] cpu1 at thinair0: rump virtual cpu
[   1.0000050] root file system type: rumpfs
[   1.0000050] kern.module.path=/stand/evbarm/10.99.14/modules
[   1.0200050] warning: kernel ABI not supported on this arch
[   1.0200050] panic: uvm_km_alloc failed
[   1.0200050] rump kernel halting...
halted



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