Package: lvm2 Version: 2.02.111-2.2 Severity: normal Hi,
lvs --unbuffered in Jessie seems to be broken: sh# ulimit -c $((1024*1024)) sh# lvs vm --select 'lv_name =~ .*img' --unbuffered || echo $? LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert test.img vm -wi-a----- 8.00g deb-installer.img vm -wi-ao---- 8.00g Segmentation fault (core dumped) 139 sh# gdb -q lvs core Reading symbols from lvs...(no debugging symbols found)...done. warning: core file may not match specified executable file. [New LWP 23047] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `lvs vm --select lv_name =~ .*img --unbuffered'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007ff74c9a9ab8 in dm_bit_and () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 (gdb) bt #0 0x00007ff74c9a9ab8 in dm_bit_and () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #1 0x00007ff74c9cf18c in ?? () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #2 0x00007ff74c9cf3a2 in ?? () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #3 0x00007ff74c9d00a2 in dm_regex_match () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #4 0x00007ff74c9c5111 in ?? () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #5 0x00007ff74c9c4ed7 in ?? () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #6 0x00007ff74c9ca2f4 in dm_report_object () from /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 #7 0x00007ff74d4e0ee9 in report_object () #8 0x00007ff74d467e82 in ?? () #9 0x00007ff74d469a95 in process_each_lv_in_vg () #10 0x00007ff74d46b494 in process_each_lv () #11 0x00007ff74d468507 in ?? () #12 0x00007ff74d45f258 in lvm_run_command () #13 0x00007ff74d45f8ee in lvm2_main () #14 0x00007ff74c3d9b45 in __libc_start_main (main=0x7ff74d44a6f0 <main>, argc=5, argv=0x7ffe27eeee08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe27eeedf8) at libc-start.c:287 #15 0x00007ff74d44a71e in _start () (gdb) q sh# I'm pretty sure that the issue is related to the regex expansion, since a fixed string comparision ('=') works fine: sh# lvs vm --select 'lv_name = test.img' --unbuffered || echo $? LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert test.img vm -wi-a----- 8.00g sh# Also, the output does always consist of two lines plus header, before the segfault occurs. I can confirm this on another host. It is important to have at least four LVs inside a VG, this will trigger the segfault. Having exactly three LVs does not segfault, but causes _wrong_ output (the last entry does not get displayed). Please tell me if/how I can help to further debug this issue. Cheers, Julius -- System Information: Debian Release: 8.1 Architecture: amd64 (x86_64) -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org