fcaae5bdd3
When running several builders in parallel, on QEMU, with 8GB of memory, a fatal kernel trap (0x300 (data storage interrupt)) caused by llan driver is sometimes observed, when the system starts to run out of swap space. This happens because, at llan_intr(), a phyp call to add a logical LAN buffer is always made when llan_add_rxbuf() fails, even if it fails to allocate a new buffer. PR: 235489 Reviewed by: jhibbits Differential Revision: https://reviews.freebsd.org/D19084
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