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authorMagnus Lång <[email protected]>2016-05-23 15:41:31 +0200
committerMagnus Lång <[email protected]>2016-07-06 16:08:20 +0200
commitf0131c58c42a286c8b3f611b47106393a37197b6 (patch)
treecaefc37baef32b065e69f23cc363a83ff70dcd12 /lib/odbc/configure.in
parent3b409021a70427bb2fe3834707edf822b6afce2d (diff)
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check_process_code: Sweep HiPE stack for literals
Because check_process_code neglected checking the HiPE stack for references to the literal area, such references would survive the purge and subsequent deletion of a module and its literal area. These dangling references would then cause incorrect behaviour or even hard crashes of the VM. By simply adding a scan of the HiPE stack to check_process_code and erts_garbage_collect_literals, this problem is fixed. In order to support full stack walks without deleting the graylimit trap, a new stack walking interface function, nstack_walk_init_sdesc_ignore_trap() was introduced.
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