ASAN aborts on UML x86_64

[JoeyJiao]

I see the failure on 4.19 and lastest kernel 5.7-rc2 torvalds/linux@ae83d0b

I looks similar to #960 #837 and #856

Steps to reproduce.
make -j32 defconfig ARCH=um SUBARCH=x86_64 x86_64_defconfig
make -j32 linux ARCH=um SUBARCH=x86_64
./linux mem=4096M ubda=rootfs-stretch
screen /dev/pts/7
clang -fsanitize=address test.c
./a.out

Tried to -fno-pie too, but the same.

uname -a

Linux qr001 5.7.0-rc2 #1 Mon Apr 20 09:01:45 CST 2020 x86_64 GNU/Linux

Error:
==151==Shadow memory range interleaves with an existing memory mapping. ASan cannot proceed correctly. ABORTING.
==151==ASan shadow was supposed to be located in the [0x00007fff7000-0x10007fff7fff] range.
==151==This might be related to ELF_ET_DYN_BASE change in Linux 4.12.
==151==See #856 for possible workarounds.
==151==Process memory map follows:
0x000000100000-0x000000102000
0x000000400000-0x000000528000 /root/a.out
0x000000728000-0x000000729000 /root/a.out
0x000000729000-0x00000072c000 /root/a.out
0x00000072c000-0x000000fd2000 [heap]
0x000040000000-0x000040023000 /lib/x86_64-linux-gnu/ld-2.24.so
0x000040023000-0x000040028000
0x000040028000-0x000040043000
0x000040223000-0x000040224000 /lib/x86_64-linux-gnu/ld-2.24.so
0x000040224000-0x000040225000 /lib/x86_64-linux-gnu/ld-2.24.so
0x000040225000-0x000040226000
0x000040226000-0x00004023e000 /lib/x86_64-linux-gnu/libpthread-2.24.so
0x00004023e000-0x00004043d000 /lib/x86_64-linux-gnu/libpthread-2.24.so
0x00004043d000-0x00004043e000 /lib/x86_64-linux-gnu/libpthread-2.24.so
0x00004043e000-0x00004043f000 /lib/x86_64-linux-gnu/libpthread-2.24.so
0x00004043f000-0x000040443000
0x000040443000-0x00004044a000 /lib/x86_64-linux-gnu/librt-2.24.so
0x00004044a000-0x000040649000 /lib/x86_64-linux-gnu/librt-2.24.so
0x000040649000-0x00004064a000 /lib/x86_64-linux-gnu/librt-2.24.so
0x00004064a000-0x00004064b000 /lib/x86_64-linux-gnu/librt-2.24.so
0x00004064b000-0x00004074e000 /lib/x86_64-linux-gnu/libm-2.24.so
0x00004074e000-0x00004094d000 /lib/x86_64-linux-gnu/libm-2.24.so
0x00004094d000-0x00004094e000 /lib/x86_64-linux-gnu/libm-2.24.so
0x00004094e000-0x00004094f000 /lib/x86_64-linux-gnu/libm-2.24.so
0x00004094f000-0x000040952000 /lib/x86_64-linux-gnu/libdl-2.24.so
0x000040952000-0x000040b51000 /lib/x86_64-linux-gnu/libdl-2.24.so
0x000040b51000-0x000040b52000 /lib/x86_64-linux-gnu/libdl-2.24.so
0x000040b52000-0x000040b53000 /lib/x86_64-linux-gnu/libdl-2.24.so
0x000040b53000-0x000040b69000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x000040b69000-0x000040d68000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x000040d68000-0x000040d69000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x000040d69000-0x000040d6a000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x000040d6a000-0x000040eff000 /lib/x86_64-linux-gnu/libc-2.24.so
0x000040eff000-0x0000410ff000 /lib/x86_64-linux-gnu/libc-2.24.so
0x0000410ff000-0x000041103000 /lib/x86_64-linux-gnu/libc-2.24.so
0x000041103000-0x000041105000 /lib/x86_64-linux-gnu/libc-2.24.so
0x000041105000-0x00004145b000
0x007fbfcb5000-0x007fbfcd6000 [stack]
0x007fbffff000-0x007fc0000000 [vdso]
==151==End of process memory map.

Any idea or suggestion?

[benzea]

https://patchwork.ozlabs.org/project/linux-um/list/?series=408453