XZ developers have a couple questions regarding this after looking at the trace: - is it reproducible? did it happen several times? - does the machine use ECC memory?
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xz-utils in Ubuntu. https://bugs.launchpad.net/bugs/2032577 Title: xz crashed with SIGSEGV in lzma_lzma_optimum_normal Status in xz-utils package in Ubuntu: New Bug description: xz segfaults. More details in https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/2032379 From Dmesg.txt on that report [114838.184191] xz[431483]: segfault at 7f9a93f3701a ip 00007f9b3f780c1a sp 00007f9a957baa50 error 4 in liblzma.so.5.2.5[7f9b3f771000+1b000] ProblemType: Crash ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown DistroRelease: Ubuntu 22.04 ExecutablePath: /usr/bin/xz ExecutableTimestamp: 1649422298 InstallationDate: Installed on 2021-04-09 (863 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) Package: xz-utils 5.2.5-2ubuntu1 ProcCmdline: xz --check=crc32 --threads=0 -c /var/tmp/mkinitramfs-MAIN_E1GbD9 ProcCwd: / ProcEnviron: LC_CTYPE=C.UTF-8 TERM=linux PATH=(custom, no user) LANG=en_GB.UTF-8 ProcVersionSignature: Ubuntu 5.19.0-38.39~22.04.1-generic 5.19.17 SegvAnalysis: Segfault happened at: 0x7f9b3f780c1a: movzbl (%rdi,%r8,1),%r10d PC (0x7f9b3f780c1a) ok source "(%rdi,%r8,1)" (0x7f9a93f3701a) in non-readable VMA region: 0x7f9a90021000-0x7f9a94000000 ---p None destination "%r10d" ok Stack memory exhausted (SP below stack segment) SegvReason: reading VMA None Signal: 11 SourcePackage: xz-utils Uname: Linux 5.19.0-38-generic x86_64 UpgradeStatus: Upgraded to jammy on 2023-01-29 (204 days ago) UserGroups: N/A StacktraceTop: bt_find_func (len_limit=64, pos=9137198, cur=0x7f9a943edc3d "", cur_match=4194304, depth=24, son=son@entry=0x7f9a8afbd010, cyclic_pos=748589, cyclic_size=8388609, matches=0x7f9adc0ec324, len_best=11) at ../../../../src/liblzma/lz/lz_encoder_mf.c:483 lzma_mf_bt4_find (mf=0x7f9a90000c70, matches=0x7f9adc0ec304) at ../../../../src/liblzma/lz/lz_encoder_mf.c:721 lzma_mf_find (mf=mf@entry=0x7f9a90000c70, count_ptr=count_ptr@entry=0x7f9adc0ecb94, matches=matches@entry=0x7f9adc0ec304) at ../../../../src/liblzma/lz/lz_encoder_mf.c:28 lzma_lzma_optimum_normal (position=<optimized out>, len_res=<synthetic pointer>, back_res=<synthetic pointer>, mf=<optimized out>, coder=<optimized out>) at ../../../../src/liblzma/lzma/lzma_encoder_optimum_normal.c:846 lzma_lzma_optimum_normal (position=<optimized out>, len_res=<synthetic pointer>, back_res=<synthetic pointer>, mf=<optimized out>, coder=<optimized out>) at ../../../../src/liblzma/lzma/lzma_encoder_optimum_normal.c:804 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xz-utils/+bug/2032577/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
