It looks like find_devname_offset() expects a device path with '/' in it otherwise it returns a "random" offset. # gdb kpartx (gdb) run -l rootvg-letovol Starting program: /sbin/kpartx -l rootvg-foovol Program received signal SIGSEGV, Segmentation fault. 0x000000393b677160 in strlen () from /lib64/libc.so.6 (gdb) where #0 0x000000393b677160 in strlen () from /lib64/libc.so.6 #1 0x000000393b6460bb in vfprintf () from /lib64/libc.so.6 #2 0x000000393b64bf0a in printf () from /lib64/libc.so.6 #3 0x00000000004026cd in main (argc=3, argv=0x7fffb12ebb98) at kpartx.c:368 #4 0x000000393b61dab4 in __libc_start_main () from /lib64/libc.so.6 #5 0x0000000000401659 in _start () (gdb) up #1 0x000000393b6460bb in vfprintf () from /lib64/libc.so.6 (gdb) up #2 0x000000393b64bf0a in printf () from /lib64/libc.so.6 (gdb) up #3 0x00000000004026cd in main (argc=3, argv=0x7fffb12ebb98) at kpartx.c:368 368 printf("%s%s%d : 0 %" PRIu64 " %s %" PRIu64"\n", (gdb) print off $1 = 1322333445 (gdb) print device+off $2 = 0x800000000001 <Address 0x800000000001 out of bounds>
still there in f8, you need a cd /dev/mapper; kpartx -l someexistingdev to fail though.
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