libgcc_s.so.1 must be installed for pthread_cancel to work

[satter]

Hello,

I'm trying to back up my icloud photos to Ubuntu 18.04 system.

After running for 1-2 minutes gimme-iphotos crashes with the same error:

...
DEBUG:app:Downloading 'IMG_9845.HEIC' to '/srv/backup/icloud/photos/IMG_9845.HEIC.a4b6gyx1'
DEBUG:app:Downloading 'IMG_9844.HEIC' to '/srv/backup/icloud/photos/IMG_9844.HEIC.c3uzjdos'
DEBUG:app:Downloading 'IMG_9843.HEIC' to '/srv/backup/icloud/photos/IMG_9843.HEIC.62yqt8nf'
libgcc_s.so.1 must be installed for pthread_cancel to work
Aborted (core dumped)

This library is installed:

/lib/x86_64-linux-gnu/libgcc_s.so.1: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=679f3ae11120ec7c483bc9295345d836f5c104f7, stripped

Program is installed from pip3:

$ pip3 list | grep gimme
gimme-iphotos (1.0.6)
$ python3 --version
Python 3.6.9

Is this a 32/64bit issue?
Should I install libgcc 32bit?

[Zebradil]

I'll check that later today. So far I tested it in python:3.6.9-buster docker container. There was no libgcc error, but it downloaded empty files, so apart from your particular issue there is something related to the python version. While developing I was using python 3.8.

Meanwhile, as a workaround you can use gimme-iphotos via docker, there are instructions in the readme. If something is not clear, don't hesitate to rise a question.

[satter]

I do not have system where I can run docker at the moment

I've used strace to get more info:

epoll_create1(EPOLL_CLOEXEC)            = -1 EMFILE (Too many open files)

Looks like this crash is related to max open files limit, now running fine with ulimit -n 20000
I have ~20k photos in icloud, running with ulimit -n 10000 was unsuccessful

Here is backtrace collected from core dump:

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/python3 /usr/local/bin/gimme-iphotos -d /srv/backup/icloud/photos/ -u'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f681cff9700 (LWP 16039))]
(gdb) set substitute-path /build/glibc-2ORdQG/glibc-2.27/signal/ /opt/src/glibc-2.27/
(gdb) bt
#0  0x00007f687a88cf47 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f687a88e8b1 in __GI_abort () at abort.c:79
#2  0x00007f687a8d7655 in __libc_message (action=action@entry=(do_abort | do_backtrace), fmt=fmt@entry=0x7f687aa049f6 "%s", fmt=0x7f687aa049f6 "%s", action=(do_abort | do_backtrace))
    at ../sysdeps/posix/libc_fatal.c:181
#3  0x00007f687a8d799a in __GI___libc_fatal (message=message@entry=0x7f687a643c38 "libgcc_s.so.1 must be installed for pthread_cancel to work\n") at ../sysdeps/posix/libc_fatal.c:191
#4  0x00007f687a641edf in pthread_cancel_init () at ../sysdeps/nptl/unwind-forcedunwind.c:64
#5  0x00007f687a641fe4 in _Unwind_ForcedUnwind (exc=0x7f681cff9d70, stop=stop@entry=0x7f687a63fd90 <unwind_stop>, stop_argument=0x7f681cff8f10) at ../sysdeps/nptl/unwind-forcedunwind.c:126
#6  0x00007f687a63ff20 in __GI___pthread_unwind (buf=<optimized out>) at unwind.c:121
#7  0x00007f687a637ae5 in __do_cancel () at pthreadP.h:297
#8  0x00007f687a637ae5 in __pthread_exit (value=<optimized out>) at pthread_exit.c:28
#9  0x00007f687a97e6b4 in __pthread_exit (retval=<optimized out>) at forward.c:173
#10 0x0000000000631bb5 in  ()
#11 0x00000000005e1463 in  ()
#12 0x0000000000631af4 in  ()
#13 0x00007f687a6366db in start_thread (arg=0x7f681cff9700) at pthread_create.c:463
#14 0x00007f687a96fa3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

[satter]

I do not know if it is related to this issue or not, but gimme-iphotos has memory issues.

It is consuming all available memory until OOM kicks in: