Hi, > panic: kernel diagnostic assertion "offset < map->dm_mapsize" failed: > file "/usr/src/sys/arch/x86/x86/bus_dma.c", line 826 bad offset 0x0 >= > 0x0 > cpu0: Begin traceback... > vpanic() at netbsd:vpanic+0x173 > kern_assert() at netbsd:kern_assert+0x4b > bus_dmamap_sync() at netbsd:bus_dmamap_sync+0x326 > rge_rxeof() at netbsd:rge_rxeof+0x179
Looking at the diagnostic and the code [#], we are trying to sync a zero- length region. Wrapping the bus_dmamap_sync() and bus_dmamap_unload() calls (lines 1242 to 1244) with `if (rxq->rxq_dmamap->dm_mapsize)` would stop this panic, but it isn't immediately clear to me why we ended up with it as zero size in the first place. Regards, Julian [#] The diagnostic also fails on offset = 0 and length = 0: https://nxr.netbsd.org/xref/src/sys/arch/x86/x86/bus_dma.c#826 and we always have offset 0, therefore we must have length 0 here: https://nxr.netbsd.org/xref/src/sys/dev/pci/if_rge.c#1242 --
