Evgeny Vereshchagin
c1bc37a18b
==14==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020001c761a at pc 0x000000540abc bp 0x7ffd0caf2c50 sp 0x7ffd0caf2c48
READ of size 2 at 0x6020001c761a thread T0
#0 0x540abb in client_parse_message /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp6-client.c:849:73
#1 0x53f3bc in client_receive_advertise /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp6-client.c:1083:13
#2 0x53d57f in client_receive_message /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp6-client.c:1182:21
#3 0x7f71d8c3eeee in source_dispatch /work/build/../../src/systemd/src/libsystemd/sd-event/sd-event.c:3042:21
#4 0x7f71d8c3e431 in sd_event_dispatch /work/build/../../src/systemd/src/libsystemd/sd-event/sd-event.c:3455:21
#5 0x7f71d8c3fa8d in sd_event_run /work/build/../../src/systemd/src/libsystemd/sd-event/sd-event.c:3512:21
#6 0x531f2b in fuzz_client /work/build/../../src/systemd/src/fuzz/fuzz-dhcp6-client.c:44:9
#7 0x531bc1 in LLVMFuzzerTestOneInput /work/build/../../src/systemd/src/fuzz/fuzz-dhcp6-client.c:53:9
#8 0x57bef8 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/libfuzzer/FuzzerLoop.cpp:570:15
#9 0x579d97 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) /src/libfuzzer/FuzzerLoop.cpp:479:3
#10 0x57dcc2 in fuzzer::Fuzzer::MutateAndTestOne() /src/libfuzzer/FuzzerLoop.cpp:707:19
#11 0x580cd6 in fuzzer::Fuzzer::Loop(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, fuzzer::fuzzer_allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) /src/libfuzzer/FuzzerLoop.cpp:838:5
#12 0x55e998 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/libfuzzer/FuzzerDriver.cpp:764:6
#13 0x551a4c in main /src/libfuzzer/FuzzerMain.cpp:20:10
#14 0x7f71d784182f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#15 0x41e928 in _start (/out/fuzz-dhcp6-client+0x41e928)
The extended testsuite only works with uid=0. It contains of several subdirectories named "test/TEST-??-*", which are run one by one. To run the extended testsuite do the following: $ make all # Avoid the "sudo make" below building anything as root $ cd test $ sudo make clean check ... make[1]: Entering directory `/mnt/data/harald/git/systemd/test/TEST-01-BASIC' Making all in . Making all in po TEST: Basic systemd setup [OK] make[1]: Leaving directory `/mnt/data/harald/git/systemd/test/TEST-01-BASIC' ... If one of the tests fails, then $subdir/test.log contains the log file of the test. To debug a special testcase of the testsuite do: $ make all $ cd test/TEST-01-BASIC $ sudo make clean setup run QEMU ==== If you want to log in the testsuite virtual machine, you can specify additional kernel command line parameter with $KERNEL_APPEND. $ sudo make KERNEL_APPEND="systemd.unit=multi-user.target" clean setup run you can even skip the "clean" and "setup" if you want to run the machine again. $ sudo make KERNEL_APPEND="systemd.unit=multi-user.target" run You can specify a different kernel and initramfs with $KERNEL_BIN and $INITRD. (Fedora's or Debian's default kernel path and initramfs are used by default) $ sudo make KERNEL_BIN=/boot/vmlinuz-foo INITRD=/boot/initramfs-bar clean check A script will try to find your QEMU binary. If you want to specify a different one you can use $QEMU_BIN. $ sudo make QEMU_BIN=/path/to/qemu/qemu-kvm clean check