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[SOLVED] Thunderbird crash after switching to a 17.0 profile
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crystall
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Joined: 31 Aug 2004
Posts: 12

PostPosted: Thu Jan 18, 2018 10:22 am    Post subject: [SOLVED] Thunderbird crash after switching to a 17.0 profile Reply with quote

I've just updated my kernel to the latest stable version (gentoo-sources-4.9.76-r1) but I'm encountering segfaults in both Thunderbird (thunderbird-bin-52.5.2) and all programs that rely on Python. I had the same problem when I tried to upgrade to the 4.14.x series of kernels back when they were marked stable though I don't recall if KPTI was enabled or not. The bottom of the stack traces for the crashes look the same on both programs. This is a python program crashing (equery):

Code:
#0  0x00007ffff356d91d in dlmmap_locked.isra.2.constprop () from /usr/lib64/libffi.so.6
#1  0x00007ffff356da6c in dlmmap.constprop () from /usr/lib64/libffi.so.6
#2  0x00007ffff356e5b0 in ffi_closure_alloc () from /usr/lib64/libffi.so.6
#3  0x00007ffff3782ad0 in _ctypes_alloc_callback () from /usr/lib64/python3.5/lib-dynload/_ctypes.cpython-35m-x86_64-linux-gnu.so
#4  0x00007ffff377d6fc in PyCFuncPtr_new () from /usr/lib64/python3.5/lib-dynload/_ctypes.cpython-35m-x86_64-linux-gnu.so
#5  0x00007ffff79cebc5 in type_call () from /usr/lib64/libpython3.5m.so.1.0

And this is Thunderbird:

Code:
#0  0x00007fbf117d291d in dlmmap_locked.isra.2.constprop () from /usr/lib64/libffi.so.6
#1  0x00007fbf117d2a6c in dlmmap.constprop () from /usr/lib64/libffi.so.6
#2  0x00007fbf117d35b0 in ffi_closure_alloc () from /usr/lib64/libffi.so.6
#3  0x00007fbf0cf45881 in ?? () from /opt/thunderbird/libxul.so

Has anyone encountered something similar? Should I file a bug or is this an upstream problem?

[edit] I've checked that the problem persists even if I boot with the kernel parameter 'pti=off' to disable the page-table isolation feature. The only way to get the programs working is to boot with the older 4.9.72 kernel.

[edit 2] Changed the title to avoid confusion since the problem was not what I thought it was

[Moderator edit: added [code] tags to preserve output layout. -Hu]


Last edited by crystall on Thu Jan 18, 2018 8:49 pm; edited 1 time in total
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mike155
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Joined: 17 Sep 2010
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Location: Frankfurt, Germany

PostPosted: Thu Jan 18, 2018 1:08 pm    Post subject: Reply with quote

I don't think that this is related to Meltdown/Spectre fixes or to your kernel at all. Maybe it's a late aftereffect or your switch to profile 17.0 ?

Did you try to re-emerge dev-libs/libffi?
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crystall
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Joined: 31 Aug 2004
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PostPosted: Thu Jan 18, 2018 8:47 pm    Post subject: Reply with quote

mike155 wrote:
I don't think that this is related to Meltdown/Spectre fixes or to your kernel at all. Maybe it's a late aftereffect or your switch to profile 17.0 ?

Did you try to re-emerge dev-libs/libffi?

Indeed that was the problem. I thought I had run an
Code:
emerge --emptytree world
after switching the profile but from the emerge log it seem that I actually forgot to. What I cannot explain is why the problem happened only with a kernel version and not the other. Anyway I'll change the title accordingly.
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