on 01/08/2011 15:52 John Baldwin said the following: > On Monday, August 01, 2011 3:09:27 am Andrew Thompson wrote: >> Hi, >> >> Looking at, >> >> http://www.freebsd.org/cgi/query-pr.cgi?pr=159345 >> >> The lock is a global variable, declared as >> >> static struct mtx lagg_list_mtx; >> >> I would expect this to be zeroed memory, is this guaranteed? > > Yes, but when if_lagg.ko is loaded, the runtime linker resolves references to > 'lagg_list_mtx' to point to the lock that is in the kernel's .bss from the > compiled-in lagg, not the one in the .ko file. However, both initializer > functions run (the one from the kernel and the one from the .ko) which causes > the panic.
Tangentially related: kib has/had a patch for proper hiding of static symbols from kernel runtime linker symbol resolution. It would be nice to get that into the tree some day. -- Andriy Gapon _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
