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After this commit I see a ton of warnings during boot in an amd64 bhyve VM: uma_zalloc_debug: zone "malloc-16" with the following non-sleepable locks held: exclusive sleep mutex vtnet0-rx0 (vtnet0-rx0) r = 0 (0xfffffe00f1e71d80) locked @ /home/markj/sb/main/src/sys/dev/virtio/network/if_vtnet.c:3584 exclusive sleep mutex vtnet0 (VTNET Core Lock) r = 0 (0xfffffe00f1b819a8) locked @ /home/markj/sb/main/src/sys/dev/virtio/network/if_vtnet.c:1572 stack backtrace: #0 0xffffffff8134b497 at witness_debugger+0x137 #1 0xffffffff8134dad9 at witness_warn+0x749 #2 0xffffffff819524bc at uma_zalloc_debug+0xbc #3 0xffffffff81951df0 at uma_zalloc_arg+0x30 #4 0xffffffff812083cb at malloc+0xab #5 0xffffffff8126f92c at sysctl_add_oid+0x7c #6 0xffffffff81b92fcd at alloc_bounce_zone+0x58d #7 0xffffffff81b91164 at bounce_bus_dmamap_create+0x294 #8 0xffffffff80ededc6 at vtnet_rx_alloc_buf+0x166 #9 0xffffffff80ee2ce2 at vtnet_init_locked+0xb42 #10 0xffffffff80ee10da at vtnet_ioctl+0x33a #11 0xffffffff814b63da at ifhwioctl+0x153a #12 0xffffffff814b81bb at ifioctl+0x76b #13 0xffffffff81356d36 at kern_ioctl+0x406 #14 0xffffffff8135687c at sys_ioctl+0x26c #15 0xffffffff81bffea5 at amd64_syscall+0x3d5 #16 0xffffffff81bb77fb at fast_syscall_common+0xf8 It seems surprising that we need to create a UMA zone at all.home | help