Over last 2 days, it seems we have several tests failing on windows

https://build.chromium.org/p/chromium.memory.fyi/builders/Windows%20Unit%20%28DrMemory%20x64%29/builds/1365/steps/memory%20test%3A%20unit

https://build.chromium.org/p/chromium.memory.fyi/builders/Windows%20Unit%20%28DrMemory%20x64%29/builds/1370/steps/memory%20test%3A%20unit

with a signature along the lines:

INVALID HEAP ARGUMENT to free 0x000000000f562090
# 0 replace_free                                                             [d:\drmemory_package\common\alloc_replace.c:2706]
# 1 CrashForException                                                       +0x3237a55 (0x0000000142c87eee <unit_tests.exe+0x33c7eee>)
# 2 CrashForException                                                       +0x3236835 (0x0000000142c86cce <unit_tests.exe+0x33c6cce>)
# 3 keyed_service_content.dll!BrowserContextKeyedServiceFactory::BuildServiceInstanceFor [components\keyed_service\content\browser_context_keyed_service_factory.cc:94]
# 4 keyed_service_core.dll!KeyedServiceFactory::GetServiceForContext         [components\keyed_service\core\keyed_service_factory.cc:91]
# 5 CrashForException                                                       +0x2400b8f (0x0000000141e51028 <unit_tests.exe+0x2591028>)
# 6 CrashForException                                                       +0x2400739 (0x0000000141e50bd2 <unit_tests.exe+0x2590bd2>)
# 7 CrashForException                                                       +0x26b82ab (0x0000000142108744 <unit_tests.exe+0x2848744>)
# 8 CrashForException                                                       +0x55ea92b (0x000000014503adc4 <unit_tests.exe+0x577adc4>)
# 9 KERNEL32.dll!BaseThreadInitThunk                                        +0xc      (0x00000000778459cd <KERNEL32.dll+0x159cd>)
Note: @0:04:20.848 in thread 9184
Note: refers to -48 byte(s) beyond last valid byte in prior malloc
Note: prev lower malloc:  0x000000000f562090-0x000000000f5620c0
Suppression (error hash=#01960CF567950EBC#):
For more info on using suppressions see http://dev.chromium.org/developers/how-tos/using-drmemory#TOC-Suppressing-error-reports-from-the-
{
INVALID HEAP ARGUMENT
name=<insert_a_suppression_name_here>
drmemorylib.dll!replace_free
*!CrashForException
*!CrashForException
keyed_service_content.dll!BrowserContextKeyedServiceFactory::BuildServiceInstanceFor
keyed_service_core.dll!KeyedServiceFactory::GetServiceForContext
*!CrashForException
*!CrashForException
*!CrashForException
*!CrashForException
KERNEL32.dll!BaseThreadInitThunk
}

I do not quite understand what is going on