Sadly running it under valgrind doesn't detect this memory corruption - we see an invalid memory read on shutdown but that is all:
$ sudo valgrind /usr/libexec/udisks2/udisksd ==567833== Memcheck, a memory error detector ==567833== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==567833== Using Valgrind-3.18.1 and LibVEX; rerun with -h for copyright info ==567833== Command: /usr/libexec/udisks2/udisksd ==567833== udisks-Message: 15:23:12.496: udisks daemon version 2.9.4 starting ** (udisksd:567833): WARNING **: 15:23:12.985: failed to load module mdraid: libbd_mdraid.so.2: cannot open shared object file: No such file or directory (udisksd:567833): udisks-WARNING **: 15:23:13.018: Failed to load the 'mdraid' libblockdev plugin udisks-Message: 15:23:17.443: udisks daemon version 2.9.4 exiting ==567833== Invalid read of size 4 ==567833== at 0x4B5BB14: g_resource_unref (gresource.c:527) ==567833== by 0x4B5D8C0: g_static_resource_fini (gresource.c:1449) ==567833== by 0x400624D: _dl_fini (dl-fini.c:142) ==567833== by 0x4E85494: __run_exit_handlers (exit.c:113) ==567833== by 0x4E8560F: exit (exit.c:143) ==567833== by 0x4E69D96: (below main) (libc_start_call_main.h:74) ==567833== Address 0x9246130 is 0 bytes inside a block of size 16 free'd ==567833== at 0x484B27F: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so) ==567833== by 0x4B5D8B8: g_static_resource_fini (gresource.c:1448) ==567833== by 0x400624D: _dl_fini (dl-fini.c:142) ==567833== by 0x4E85494: __run_exit_handlers (exit.c:113) ==567833== by 0x4E8560F: exit (exit.c:143) ==567833== by 0x4E69D96: (below main) (libc_start_call_main.h:74) ==567833== Block was alloc'd at ==567833== at 0x4848899: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so) ==567833== by 0x4D64718: g_malloc (gmem.c:125) ==567833== by 0x4B5D137: UnknownInlinedFun (gresource.c:545) ==567833== by 0x4B5D137: g_resource_new_from_data (gresource.c:613) ==567833== by 0x4B5D1F8: register_lazy_static_resources_unlocked (gresource.c:1374) ==567833== by 0x4B5D8FC: UnknownInlinedFun (gresource.c:1393) ==567833== by 0x4B5D8FC: UnknownInlinedFun (gresource.c:1387) ==567833== by 0x4B5D8FC: g_static_resource_get_resource (gresource.c:1472) ==567833== by 0x14E463: udisks_linux_mount_options_get_builtin (in /usr/libexec/udisks2/udisksd) ==567833== by 0x12BA6E: ??? (in /usr/libexec/udisks2/udisksd) ==567833== by 0x4CCB03E: g_object_new_internal (gobject.c:2053) ==567833== by 0x4CCC757: g_object_new_valist (gobject.c:2355) ==567833== by 0x4CCCC8C: g_object_new (gobject.c:1824) ==567833== by 0x1288BF: udisks_daemon_new (in /usr/libexec/udisks2/udisksd) ==567833== by 0x128935: ??? (in /usr/libexec/udisks2/udisksd) I also tried rebuilding udisks2, cryptsetup and openssl with ASan enabled but that also didn't appear to detect it... I am out of ideas of where to look / what to try to dig further into this. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to udisks2 in Ubuntu. https://bugs.launchpad.net/bugs/1964532 Title: /usr/libexec/udisks2/udisksd:malloc_consolidate(): unaligned fastbin chunk detected Status in udisks2 package in Ubuntu: Confirmed Bug description: The Ubuntu Error Tracker has been receiving reports about a problem regarding udisks2. This problem was most recently seen with package version 2.9.4-1, the problem page at https://errors.ubuntu.com/problem/ee70e42ef96a41e0ae118869c75b7cc675ae974c contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports. If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udisks2/+bug/1964532/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
