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Bug 768015 - x11-base/xorg-server with unwind doesn't find unwind information
Summary: x11-base/xorg-server with unwind doesn't find unwind information
Status: UNCONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo X packagers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-01-30 18:35 UTC by Bodo Thiesen
Modified: 2021-02-01 00:13 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Bodo Thiesen 2021-01-30 18:35:30 UTC
x11-base/xorg-server with USE unwind and FEATURES splitdebug doesn't find unwind information.

I didn't test yet whether removing splitdebug from FEATURES solves the problem.

$ emerge -1Op x11-base/xorg-server
[...]
[ebuild   R    ] x11-base/xorg-server-1.20.10:0/1.20.10::gentoo  USE="elogind ipv6 kdrive udev unwind xorg xvfb -debug -dmx -doc -libressl -minimal (-selinux) -suid -systemd -wayland -xcsecurity -xephyr -xnest" 0 KiB
[...]
$ less /var/log/Xorg.0.log.old
[...]
[2538311.626] (EE) Backtrace:
[2538311.632] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.633] (EE) 0: /usr/bin/X (?+0x0) [0x55ec86b6bb38]
[2538311.633] (EE) 1: /lib64/libpthread.so.0 (funlockfile+0x50) [0x7f787d2ddef0]
[2538311.634] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.634] (EE) 2: /usr/bin/X (?+0x0) [0x55ec86adb118]
[2538311.634] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.634] (EE) 3: /usr/bin/X (?+0x0) [0x55ec86b49e4d]
[2538311.634] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.634] (EE) 4: /usr/bin/X (?+0x0) [0x55ec86b49812]
[2538311.635] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.635] (EE) 5: /usr/bin/X (?+0x0) [0x55ec86a36767]
[2538311.635] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.635] (EE) 6: /usr/bin/X (?+0x0) [0x55ec86b5ecb6]
[2538311.635] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.635] (EE) 7: /usr/bin/X (?+0x0) [0x55ec86a0b820]
[2538311.635] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.636] (EE) 8: /usr/bin/X (?+0x0) [0x55ec869d2670]
[2538311.636] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.636] (EE) 9: /usr/bin/X (?+0x0) [0x55ec869d85e5]
[2538311.636] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.636] (EE) 10: /usr/bin/X (?+0x0) [0x55ec869dddf3]
[2538311.641] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.641] (EE) 11: /lib64/libc.so.6 (?+0x0) [0x7f787d0ff01e]
[2538311.641] (EE) unw_get_proc_name failed: no unwind info found [-10]
[2538311.641] (EE) 12: /usr/bin/X (?+0x0) [0x55ec869c1f8a]
[2538311.641] (EE) 
[2538311.641] (EE) Segmentation fault at address 0x0

I reported the but causing the segfault already 4 month ago directly to freedesktop.org, this Gentoo bug report is only about the unwind failure.

https://gitlab.freedesktop.org/xorg/xserver/-/issues/1080

FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs clean-logs collision-protect compressdebug config-protect-if-modified distlocks ebuild-locks fixlafiles installsources ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"