crash with highly parallel load
Posted by Anonymous on Sat 28th Oct 2023 18:57
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modification of post by Anonymous (view diff)

1d4c: trying to open directory \export\home\rmainz\tmp\winnfstest\hummingbirdnfstest1\gcc_cygwin\gcc-9.5.0\host-x86_64-pc-cygwin\gcc\tmpmultilib.56571 as a file
033c: ASSERTION 'state != NULL' in 'C:\cygwin64\home\roland_mainz\work\msnfs41_uidmapping\ms-nfs41-client\daemon\open.c'/115 failed.
(22d4.33c): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
nfsd!parse_getattr+0xb8:
00007ff6`a24c3fe8 0fb78900050000  movzx   ecx,word ptr [rcx+500h] ds:00000000`00000500=????
0:037> kp
Child-SP          RetAddr           Call Site
00000050`ee8fdbb0 00007ff6`a250db49 nfsd!parse_getattr(unsigned char * buffer = 0x00000050`ee8fdf58 "t", unsigned int length = 0, struct __nfs41_upcall * upcall = 0x00000050`ee8fefb0)+0xb8
00000050`ee8fdd00 00007ff6`a24dd434 nfsd!upcall_parse(unsigned char * buffer = 0x00000050`ee8fdf50 "???", unsigned int length = 8, struct __nfs41_upcall * upcall = 0x00000050`ee8fefb0)+0x329
00000050`ee8fde80 00007ffd`18084c7c nfsd!thread_main(void * args = 0x00007ff6`a2546090)+0x144
00000050`ee8ffbd0 00007ffd`4c877344 ucrtbased!thread_start<unsigned int (void * parameter = 0x000001d6`204ede30)+0x9c
00000050`ee8ffc30 00007ffd`4cd226b1 KERNEL32!BaseThreadInitThunk+0x14
00000050`ee8ffc60 00000000`00000000 ntdll!RtlUserThreadStart+0x21

# after that we get:

0:037> gn
2388: clnt_call returned rpc_status = RPC_TIMEDOUT
1620: IOCTL_NFS41_WRITE failed with 31 xid=96019290 opcode=NFS41_CLOSE
03f0: IOCTL_NFS41_WRITE failed with 31 xid=96019286 opcode=NFS41_CLOSE
020c: IOCTL_NFS41_WRITE failed with 31 xid=96019288 opcode=NFS41_CLOSE
17e4: IOCTL_NFS41_WRITE failed with 31 xid=96019291 opcode=NFS41_CLOSE
2330: clnt_call returned rpc_status = RPC_TIMEDOUT
(22d4.33c): Access violation - code c0000005 (!!! second chance !!!)
nfsd!parse_getattr+0xb8:
00007ff6`a24c3fe8 0fb78900050000  movzx   ecx,word ptr [rcx+500h] ds:00000000`00000500=????
0:037> gn
ntdll!NtWaitForAlertByThreadId+0x14:
00007ffd`4cd70a14 c3              ret
0:040> kp
Child-SP          RetAddr           Call Site
00000050`eebff1b8 00007ffd`4cd34375 ntdll!NtWaitForAlertByThreadId+0x14
00000050`eebff1c0 00007ffd`4a893579 ntdll!RtlSleepConditionVariableCS+0x105
*** WARNING: Unable to verify checksum for C:\Users\roland_mainz\Downloads\ms-nfs41-client-x64\ms-nfs41-client-x64\libtirpc.dll
00000050`eebff230 00007ffd`17fe71c6 KERNELBASE!SleepConditionVariableCS+0x29
00000050`eebff260 00007ffd`4a491bb2 libtirpc!clnt_cb_thread(void * args = 0x000001d6`204f9e60)+0xd6
00000050`eebff800 00007ffd`4c877344 ucrtbase!thread_start<unsigned int +0x42
00000050`eebff830 00007ffd`4cd226b1 KERNEL32!BaseThreadInitThunk+0x14
00000050`eebff860 00000000`00000000 ntdll!RtlUserThreadStart+0x21