Am 02.10.2013 10:54, schrieb Stefan Hajnoczi: > This is an interesting backtrace. The 'current' thread-local variable > from coroutine-win32.c is NULL or doesn't have a caller assigned. > > Please post 'thread apply all bt' so we can identify the other threads. > > Stefan
The other threads don't have a reasonable backtrace: (gdb) thread apply all bt Thread 3 (Thread 5708.0x15bc): #0 0x76118e76 in msvcrt!abort () from C:\Windows\syswow64\msvcrt.dll #1 0x7611680c in msvcrt!_assert () from C:\Windows\syswow64\msvcrt.dll #2 0x0051957d in qemu_co_queue_restart_all (queue=queue@entry=0x6e5fe90) at c:/cygwin/home/stweil/src/qemu/qemu.org/qemu/qemu-coroutine-lock.c:99 #3 0x0040f4d1 in tracked_request_end (req=0x6e5fe6c) at c:/cygwin/home/stweil/src/qemu/qemu.org/qemu/block.c:1963 #4 bdrv_co_do_readv (bs=0x31e78f0, sector_num=<optimized out>, nb_sectors=4, qiov=0x745f9d0, flags=<optimized out>) at c:/cygwin/home/stweil/src/qemu/qemu.org/qemu/block.c:2675 #5 0x0040f4a2 in bdrv_co_do_readv (bs=0x31e5ea8, sector_num=<optimized out>, nb_sectors=4, qiov=0x745f9d0, flags=<optimized out>) at c:/cygwin/home/stweil/src/qemu/qemu.org/qemu/block.c:2645 #6 0x0041060c in bdrv_rw_co_entry (opaque=0x745f968) at c:/cygwin/home/stweil/src/qemu/qemu.org/qemu/block.c:2276 #7 0x00442238 in coroutine_trampoline (co_=0x31e8bf0) at c:/cygwin/home/stweil/src/qemu/qemu.org/qemu/coroutine-win32.c:57 #8 0x7549bfa2 in KERNEL32!GetQueuedCompletionStatus () from C:\Windows\syswow64\kernel32.dll #9 0x031e8bf0 in ?? () #10 0x7549bf5a in KERNEL32!GetQueuedCompletionStatus () from C:\Windows\syswow64\kernel32.dll #11 0x016d24e0 in ?? () Thread 2 (Thread 5708.0xe1c): #0 0x7749f8d1 in ntdll!RtlUpdateClonedSRWLock () from C:\Windows\system32\ntdll.dll #1 0x7749f8d1 in ntdll!RtlUpdateClonedSRWLock () from C:\Windows\system32\ntdll.dll #2 0x759c149d in WaitForSingleObjectEx () from C:\Windows\syswow64\KernelBase.dll #3 0x00000150 in ?? () #4 0x00000000 in ?? () Thread 1 (Thread 5708.0x1600): #0 0x7749f8d1 in ntdll!RtlUpdateClonedSRWLock () from C:\Windows\system32\ntdll.dll #1 0x7749f8d1 in ntdll!RtlUpdateClonedSRWLock () from C:\Windows\system32\ntdll.dll #2 0x774b8e44 in ntdll!TpCallbackMayRunLong () from C:\Windows\system32\ntdll.dll #3 0x00000160 in ?? () #4 0x00000000 in ?? ()