ATF tests panic

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hello
in my daily ATF runs on Xen VMs, I see occasional panics like:
kernel/kqueue/t_proc4 (81/956): 1 test cases
    proc4: [ 727.4761311] uvm_fault(0xffffeb8004cff900, 0x0, 2) -> e
[ 727.4899584] fatal page fault in supervisor mode
[ 727.4981872] trap type 6 code 0x2 rip 0xffffffff80dcf31d cs 0x8 rflags 0x10246 cr2 0xb0 ilevel 0 rsp 0xffffc280510e4e08
[ 727.5261058] curlwp 0xffffeb80055a6000 pid 20525.20525 lowest kstack 0xffffc280510e02c0
[ 727.5410680] panic: trap
[ 727.5410680] cpu0: Begin traceback...
[ 727.5611378] vpanic() at netbsd:vpanic+0x173
[ 727.5679804] panic() at netbsd:panic+0x3c
[ 727.5787912] trap() at netbsd:trap+0xb0a
[ 727.5896397] --- trap (number 6) ---
[ 727.6161322] _mutex_init() at netbsd:_mutex_init+0x33
[ 727.6274274] knote_proc_fork() at netbsd:knote_proc_fork+0xa2
[ 727.6366632] fork1() at netbsd:fork1+0x6ba
[ 727.6468860] sys_fork() at netbsd:sys_fork+0x29
[ 727.6563376] syscall() at netbsd:syscall+0x17a
[ 727.6661484] --- syscall (number 2) ---
[ 727.6775934] netbsd:syscall+0x17a:
[ 727.6775934] cpu0: End traceback...

[ 727.6928214] dumping to dev 168,1 (offset=8, size=128926):
[ 727.6928214] dump device bad

The first occurance seems to be this:
https://largo.lip6.fr/~bouyer/NetBSD-tests/xen/HEAD/amd64-pv/202309261750Z_anita.txt

I see it for PV, PVH and HVM runs, but it's quite rare.

I am the only one seeing this ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
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