Author: luporl Date: Tue Feb 5 18:16:14 2019 New Revision: 343791 URL: https://svnweb.freebsd.org/changeset/base/343791
Log: [ppc64] llan: fix fatal kernel trap when system is low on memory 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 Modified: head/sys/powerpc/pseries/phyp_llan.c Modified: head/sys/powerpc/pseries/phyp_llan.c ============================================================================== --- head/sys/powerpc/pseries/phyp_llan.c Tue Feb 5 18:11:15 2019 (r343790) +++ head/sys/powerpc/pseries/phyp_llan.c Tue Feb 5 18:16:14 2019 (r343791) @@ -386,8 +386,6 @@ restart: /* llan_add_rxbuf does DMA sync and unload as well as requeue */ if (llan_add_rxbuf(sc, rx) != 0) { if_inc_counter(sc->ifp, IFCOUNTER_IERRORS, 1); - phyp_hcall(H_ADD_LOGICAL_LAN_BUFFER, sc->unit, - rx->rx_bufdesc); continue; } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
