Follow-up Comment #17, bug#64806 (group make):
All the 8 processes seem to be hung: see attached screenshot from Process
Explorer. Apparently there is a "root" process, that has eight children, who
each have 1-1 children. Now did a more systematic investigation along the
process creation tree 7496->3704->14472.
Attaching the debugger to the "root" process 7496 and printing call trees in
both threads:
(gdb) attach 7496
(gdb) info threads
Id Target Id Frame
1 Thread 7496.0x557c 0x771f315c in ntdll!ZwWaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\ntdll.dll
* 2 Thread 7496.0x1640 0x771f4f21 in ntdll!DbgBreakPoint ()
from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) thread 1
[Switching to thread 1 (Thread 7496.0x557c)]
#0 0x771f315c in ntdll!ZwWaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) bt
#0 0x771f315c in ntdll!ZwWaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#1 0x76304de3 in WaitForMultipleObjectsEx ()
from C:\WINDOWS\SysWOW64\KernelBase.dll
#2 0x76304cc8 in WaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\KernelBase.dll
#3 0x00907ad5 in process_wait_for_multiple_objects (nCount=9,
lpHandles=lpHandles@entry=0x1e1ef50, bWaitAll=bWaitAll@entry=0,
dwMilliseconds=dwMilliseconds@entry=4294967295)
at src/w32/subproc/sub_proc.c:89
#4 0x00906e58 in jobserver_acquire (timeout=0) at src/w32/w32os.c:370
#5 0x008f3b1b in new_job (file=0x1dfce88) at src/job.c:1882
#6 0x008ffe5b in remake_file (file=0x1dfce88) at src/remake.c:1313
#7 update_file_1 (depth=<optimized out>, file=<optimized out>)
at src/remake.c:905
#8 update_file (file=file@entry=0x1dfce88, depth=<optimized out>)
at src/remake.c:367
#9 0x009004b7 in check_dep (file=0x1dfce88, depth=depth@entry=1,
this_mtime=<optimized out>, must_make_ptr=<optimized out>,
must_make_ptr@entry=0x1bff244) at src/remake.c:1100
#10 0x008ff2ba in update_file_1 (depth=<optimized out>, file=<optimized out>)
at src/remake.c:633
#11 update_file (file=file@entry=0x1dfd3c8, depth=<optimized out>)
at src/remake.c:367
#12 0x0090077e in update_goal_chain (goaldeps=<optimized out>)
at src/remake.c:184
#13 0x009143ce in main (argc=<optimized out>, argv=<optimized out>,
envp=<optimized out>) at src/main.c:2921
(gdb) thread 2
[Switching to thread 2 (Thread 7496.0x1640)]
#0 0x771f4f21 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) bt
#0 0x771f4f21 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll
#1 0x7722dbc9 in ntdll!DbgUiRemoteBreakin ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#2 0x69d77919 in ?? ()
#3 0x7722db90 in ntdll!DbgUiIssueRemoteBreakin ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#4 0x767bfcc9 in KERNEL32!BaseThreadInitThunk ()
from C:\WINDOWS\SysWOW64\kernel32.dll
#5 0x771e7c6e in ntdll!RtlGetAppContainerNamedObjectPath ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#6 0x771e7c3e in ntdll!RtlGetAppContainerNamedObjectPath ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#7 0x00000000 in ?? ()
(gdb) detach
Attaching the debugger to the "child" process 3704 and printing call trees in
both threads:
(gdb) attach 3704
(gdb) info threads
Id Target Id Frame
1 Thread 3704.0x50e4 0x771f315c in ntdll!ZwWaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\ntdll.dll
* 2 Thread 3704.0x1778 0x771f4f21 in ntdll!DbgBreakPoint ()
from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) thread 1
[Switching to thread 1 (Thread 3704.0x50e4)]
#0 0x771f315c in ntdll!ZwWaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) bt
#0 0x771f315c in ntdll!ZwWaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#1 0x76304de3 in WaitForMultipleObjectsEx ()
from C:\WINDOWS\SysWOW64\KernelBase.dll
#2 0x76304cc8 in WaitForMultipleObjects ()
from C:\WINDOWS\SysWOW64\KernelBase.dll
#3 0x00907ad5 in process_wait_for_multiple_objects (nCount=1,
lpHandles=0x1bfa940, bWaitAll=0, dwMilliseconds=4294967295)
at src/w32/subproc/sub_proc.c:89
#4 0x00907c20 in process_wait_for_any_private (block=block@entry=1,
pdwWaitStatus=pdwWaitStatus@entry=0x0) at src/w32/subproc/sub_proc.c:204
#5 0x00908ad1 in process_wait_for_any (block=block@entry=1,
pdwWaitStatus=pdwWaitStatus@entry=0x0) at src/w32/subproc/sub_proc.c:307
#6 0x008f1d1f in exec_command (argv=0x1bfea70, envp=0x3ad9d88)
at src/job.c:2549
#7 0x00914a69 in main (argc=<optimized out>, argv=<optimized out>,
envp=<optimized out>) at src/main.c:2820
(gdb) thread 2
[Switching to thread 2 (Thread 3704.0x1778)]
#0 0x771f4f21 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) bt
#0 0x771f4f21 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll
#1 0x7722dbc9 in ntdll!DbgUiRemoteBreakin ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#2 0x58dd79db in ?? ()
#3 0x7722db90 in ntdll!DbgUiIssueRemoteBreakin ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#4 0x767bfcc9 in KERNEL32!BaseThreadInitThunk ()
from C:\WINDOWS\SysWOW64\kernel32.dll
#5 0x771e7c6e in ntdll!RtlGetAppContainerNamedObjectPath ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#6 0x771e7c3e in ntdll!RtlGetAppContainerNamedObjectPath ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#7 0x00000000 in ?? ()
(gdb) detach
Attaching the debugger to the "grandchild" process 14472 and printing call
trees in both threads:
(gdb) attach 14472
(gdb) info threads
Id Target Id Frame
1 Thread 14472.0x21ac 0x771f2bcc in ntdll!ZwWaitForSingleObject ()
from C:\WINDOWS\SysWOW64\ntdll.dll
* 2 Thread 14472.0x4d8c 0x771f4f21 in ntdll!DbgBreakPoint ()
from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) thread 1
[Switching to thread 1 (Thread 14472.0x21ac)]
#0 0x771f2bcc in ntdll!ZwWaitForSingleObject ()
from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) bt
#0 0x771f2bcc in ntdll!ZwWaitForSingleObject ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#1 0x762fac59 in WaitForSingleObjectEx ()
from C:\WINDOWS\SysWOW64\KernelBase.dll
#2 0x762fabb2 in WaitForSingleObject ()
from C:\WINDOWS\SysWOW64\KernelBase.dll
#3 0x009070ce in osync_acquire () at src/w32/w32os.c:476
#4 0x008f8148 in output_dump (out=out@entry=0x3a848a8) at src/output.c:280
#5 0x008f28ce in reap_children (block=<optimized out>, block@entry=0,
err=err@entry=0) at src/job.c:1058
#6 0x008f3aaf in new_job (file=0x3a7c548) at src/job.c:1866
#7 0x008ffe5b in remake_file (file=0x3a7c548) at src/remake.c:1313
#8 update_file_1 (depth=<optimized out>, file=<optimized out>)
at src/remake.c:905
#9 update_file (file=file@entry=0x3a7c548, depth=<optimized out>)
at src/remake.c:367
#10 0x009004b7 in check_dep (file=0x3a7c548, depth=depth@entry=1,
this_mtime=<optimized out>, must_make_ptr=<optimized out>,
must_make_ptr@entry=0x1bff054) at src/remake.c:1100
#11 0x008ff2ba in update_file_1 (depth=<optimized out>, file=<optimized out>)
at src/remake.c:633
#12 update_file (file=file@entry=0x3a7c9c8, depth=<optimized out>)
at src/remake.c:367
#13 0x0090077e in update_goal_chain (goaldeps=<optimized out>)
at src/remake.c:184
#14 0x009143ce in main (argc=<optimized out>, argv=<optimized out>,
envp=<optimized out>) at src/main.c:2921
(gdb) thread 2
[Switching to thread 2 (Thread 14472.0x4d8c)]
#0 0x771f4f21 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll
(gdb) bt
#0 0x771f4f21 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll
#1 0x7722dbc9 in ntdll!DbgUiRemoteBreakin ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#2 0xe1ffae6b in ?? ()
#3 0x7722db90 in ntdll!DbgUiIssueRemoteBreakin ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#4 0x767bfcc9 in KERNEL32!BaseThreadInitThunk ()
from C:\WINDOWS\SysWOW64\kernel32.dll
#5 0x771e7c6e in ntdll!RtlGetAppContainerNamedObjectPath ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#6 0x771e7c3e in ntdll!RtlGetAppContainerNamedObjectPath ()
from C:\WINDOWS\SysWOW64\ntdll.dll
#7 0x00000000 in ?? ()
(gdb) detach
(file #55571)
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