chromium/src revision: 
https://chromium.googlesource.com/chromium/src/+/5cca5ec7822a8d5594a6711b6040c90430b1772e

OS: Windos10, version 1511
Machine: Z840

args.gn:
symbol_level=0
is_component_build=true
is_debug=false
use_lld = true
enable_nacl = false

cmd log:
C:\src\chromium\src>ninja -C out/Release base
ninja: Entering directory `out/Release'
[329/329] LINK(DLL) base.dll base.dll.lib
FAILED: base.dll base.dll.lib
C:/src/depot_tools/python276_bin/python.exe ../../build/toolchain/win/tool_wrapper.py link-wrapper environment.x64 False ../../third_party/llvm-build/Release+Asserts/bin/lld-link.exe /nologo /IMPLIB:./base.dll.lib /DLL /OUT:./base.dll /PDB:./base.dll.pdb @./base.dll.rsp
Wrote crash dump file "C:\src\cygwin64\tmp\lld-link.exe-ce9ede.dmp"
#0 0x00007ff6994687e2 (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x887e2)
#1 0x00007ff699474a97 (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x94a97)
#2 0x00007ff699475154 (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x95154)
#3 0x00007ff6994682fc (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x882fc)
#4 0x00007ff6994646b9 (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x846b9)
#5 0x00007ff699442b5a (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x62b5a)
#6 0x00007ff69943d69e (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x5d69e)
#7 0x00007ff6993e138c (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x138c)
#8 0x00007ff69b6f1aa1 (C:\src\chromium\src\third_party\llvm-build\Release+Asserts\bin\lld-link.exe+0x2311aa1)
#9 0x00007fffd2608102 (C:\Windows\system32\KERNEL32.DLL+0x18102)
#10 0x00007fffd2bfc5b4 (C:\Windows\SYSTEM32\ntdll.dll+0x5c5b4)
ninja: build stopped: subcommand failed.

I attached crash dump, this helps to debug?

 

Deleted: lld-link.exe-ce9ede.dmp 125 KB

lld-link.exe-ce9ede.dmp 125 KB Download