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Merge branch 'tor-github/pr/1181' into maint-0.4.1
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commit
bb33a2f290
4
changes/bug31003
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4
changes/bug31003
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@ -0,0 +1,4 @@
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o Minor bugfixes (crash on exit):
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- Avoid a set of possible code paths that could use try to use freed memory
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in routerlist_free() while Tor was exiting. Fixes bug 31003; bugfix on
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0.1.2.2-alpha.
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@ -954,20 +954,18 @@ routerlist_free_(routerlist_t *rl)
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smartlist_free(rl->routers);
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smartlist_free(rl->old_routers);
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if (rl->desc_store.mmap) {
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int res = tor_munmap_file(routerlist->desc_store.mmap);
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int res = tor_munmap_file(rl->desc_store.mmap);
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if (res != 0) {
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log_warn(LD_FS, "Failed to munmap routerlist->desc_store.mmap");
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}
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}
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if (rl->extrainfo_store.mmap) {
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int res = tor_munmap_file(routerlist->extrainfo_store.mmap);
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int res = tor_munmap_file(rl->extrainfo_store.mmap);
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if (res != 0) {
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log_warn(LD_FS, "Failed to munmap routerlist->extrainfo_store.mmap");
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}
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}
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tor_free(rl);
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router_dir_info_changed();
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}
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/** Log information about how much memory is being used for routerlist,
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@ -1426,8 +1424,10 @@ routerlist_reparse_old(routerlist_t *rl, signed_descriptor_t *sd)
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void
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routerlist_free_all(void)
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{
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routerlist_free(routerlist);
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routerlist = NULL;
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routerlist_t *rl = routerlist;
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routerlist = NULL; // Prevent internals of routerlist_free() from using
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// routerlist.
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routerlist_free(rl);
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dirlist_free_all();
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if (warned_nicknames) {
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SMARTLIST_FOREACH(warned_nicknames, char *, cp, tor_free(cp));
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