panic: malloc(M_WAITOK) with sleeping prohibited with main-n245383-15565e0a2177

[Peter Holm]

I just got this panic:

panic: malloc(M_WAITOK) with sleeping prohibited
cpuid = 0
time = 1615472733
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e49748b0
vpanic() at vpanic+0x181/frame 0xfffffe00e4974900
panic() at panic+0x43/frame 0xfffffe00e4974960
malloc_dbg() at malloc_dbg+0xd4/frame 0xfffffe00e4974980
malloc() at malloc+0x34/frame 0xfffffe00e49749e0
g_mirror_event_send() at g_mirror_event_send+0x30/frame 0xfffffe00e4974a30
softclock_call_cc() at softclock_call_cc+0x15d/frame 0xfffffe00e4974b00
softclock() at softclock+0x66/frame 0xfffffe00e4974b20
ithread_loop() at ithread_loop+0x279/frame 0xfffffe00e4974bb0
fork_exit() at fork_exit+0x80/frame 0xfffffe00e4974bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00e4974bf0

https://people.freebsd.org/~pho/stress/log/log0078.txt

- Peter