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Hi! When doing a copy with many jobs that give access error i get a 
really strange fault :

Thread 141 "python3" received signal SIG32, Real-time event 32.
[Switching to Thread 0x7fffed7fa700 (LWP 23298)]
syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38              cmpq $-4095, %rax       /* Check %rax for error.  */
(gdb) info registers rax
rax            0xfffffffffffffe00  -512
(gdb) info register
rax            0xfffffffffffffe00  -512
rbx            0x555555e31700      93825001527040
rcx            0x7ffff7eb01fd      140737352761853
rdx            0xc00000            12582912
rsi            0x0                 0
rdi            0x555555e367a0      93825001547680
rbp            0x7fffed7f9ed0      0x7fffed7f9ed0
rsp            0x7fffed7f9e48      0x7fffed7f9e48
r8             0x0                 0
r9             0x0                 0
r10            0x0                 0
r11            0x246               582
r12            0xc00000            12582912
r13            0x7fffffffb320      140737488335648
r14            0xb00000            11534336
r15            0x555555e367a0      93825001547680
rip            0x7ffff7eb01fd      0x7ffff7eb01fd <syscall+29>
eflags         0x246               [ PF ZF IF ]
cs             0x33                51
ss             0x2b                43
ds             0x0                 0
es             0x0                 0
fs             0x0                 0
gs             0x0                 0

This is git master @ c9622fd53 (Fix OSX build)

a dump log can be found here:
https://cernbox.cern.ch/index.php/s/JNaLKsaC5pyrhMP
which curiously did not segfault anymore

Any idea what could possibly be wrong?
What can i do to investigate this in more detail?

Thank you!!
Adrian


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