Bug#848881: [gpart] Floating point exception when scanning

[Baruch Even]

Can you please run it under gdb and capture the output of the command:
bt
bt full

Baruch

On Tue, Dec 20, 2016, 18:32 Eriberto Mota <eriberto at debian.org> wrote:

> Control: severity 848881 important
>
> Hi,
>
> Adding Baruch (upstream) in Cc.
>
> I downgraded the severity to important because this bug is not grave
> (maybe it could be normal).
>
> Baruch, any idea?
>
> Regards,
>
> Eriberto
>
>
> 2016-12-20 11:33 GMT-02:00 Ingo Juergensmann <ij at 2013.bluespice.org>:
> > Package: gpart
> > Version: 1:0.3-3
> > Severity: grave
> >
> > --- Please enter the report below this line. ---
> > Hi!
> >
> > When trying to examine a volume on LVM, I get a floating point exception
> > quite instantly:
> >
> >
> > # strace -f gpart -f /dev/lv/Elite3
> > execve("/usr/sbin/gpart", ["gpart", "-f", "/dev/lv/Elite3"], [/* 59 vars
> > */]) = 0
> >
> >
> > brk(NULL)                               = 0x5564d0c19000
> >
> >
> >
> > access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
> > directory)
> >
> >
> > mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > 0) = 0x7f959d326000
> >
> >
> > access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
> > directory)
> >
> >
> > open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
> >
> >
> >
> > fstat(3, {st_mode=S_IFREG|0644, st_size=238540, ...}) = 0
> >
> >
> >
> > mmap(NULL, 238540, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f959d2eb000
> >
> >
> >
> > close(3)                                = 0
> >
> >
> >
> > access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
> > directory)
> >
> >
> > open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
> >
> >
> >
> > read(3,
> > "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\3\2\0\0\0\0\0"...,
> > 832) = 832
> >
> >
> > fstat(3, {st_mode=S_IFREG|0755, st_size=1685264, ...}) = 0
> >
> >
> >
> > mmap(NULL, 3791264, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> > 0) = 0x7f959cd69000
> >
> >
> > mprotect(0x7f959cefe000, 2093056, PROT_NONE) = 0
> >
> >
> >
> > mmap(0x7f959d0fd000, 24576, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x194000) = 0x7f959d0fd000
> >
> >
> > mmap(0x7f959d103000, 14752, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f959d103000
> >
> >
> > close(3)                                = 0
> >
> >
> >
> > mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
> > = 0x7f959d2e9000
> >
> >
> > arch_prctl(ARCH_SET_FS, 0x7f959d2e9700) = 0
> >
> >
> >
> > mprotect(0x7f959d0fd000, 16384, PROT_READ) = 0
> >
> >
> >
> > mprotect(0x5564d0783000, 4096, PROT_READ) = 0
> >
> >
> >
> > mprotect(0x7f959d329000, 4096, PROT_READ) = 0
> >
> >
> >
> > munmap(0x7f959d2eb000, 238540)          = 0
> >
> >
> >
> > brk(NULL)                               = 0x5564d0c19000
> >
> >
> >
> > brk(0x5564d0c3a000)                     = 0x5564d0c3a000
> >
> >
> >
> > sync()                                  = 0
> >
> >
> >
> > open("/dev/lv/Elite3", O_RDONLY)        = 3
> >
> >
> >
> > lseek(3, 0, SEEK_SET)                   = 0
> >
> >
> >
> > read(3,
> >
> "\16\32R\275\217x\235v\376\377#\0\6/\0\177\377\377DDDE\35\360IHII\33\364GH"...,
> > 512) = 512
> >
> >
> > lseek(3, 0, SEEK_SET)                   = 0
> >
> >
> >
> > read(3,
> >
> "\16\32R\275\217x\235v\376\377#\0\6/\0\177\377\377DDDE\35\360IHII\33\364GH"...,
> > 512) = 512
> >
> >
> > stat("/dev/lv/Elite3", {st_mode=S_IFBLK|0660, st_rdev=makedev(253, 16),
> > ...}) = 0
> >
> >
> > ioctl(3, HDIO_GETGEO, {heads=0, sectors=0, cylinders=0, start=0}) = 0
> >
> >
> >
> > ioctl(3, BLKGETSIZE, [8388608])         = 0
> >
> >
> >
> > --- SIGFPE {si_signo=SIGFPE, si_code=FPE_INTDIV, si_addr=0x5564d057d5f0}
> > ---
> >
> >
> > +++ killed by SIGFPE +++
> >
> >
> >
> > Gleitkomma-Ausnahme
> >
> >
> >
> > --- System information. ---
> > Architecture: Kernel:       Linux 4.8.0-2-amd64
> >
> > Debian Release: stretch/sid
> >   500 unstable        www.deb-multimedia.org   500 unstable
> > ftp.de.debian.org   500 unstable        download.jitsi.org
> > --- Package information. ---
> > Depends      (Version) | Installed
> > ======================-+-===========
> > libc6         (>= 2.4) |
> >
> > Package's Recommends field is empty.
> >
> > Package's Suggests field is empty.
> >
> >
> >
> >
> > --
> > Ciao...            //      Fon: 0381-2744150
> >       Ingo       \X/       http://blog.windfluechter.net
> > Please don't share this address with Facebook or Google!
> > gpg pubkey: http://www.juergensmann.de/ij_public_key.asc
> >
> > _______________________________________________
> > forensics-devel mailing list
> > forensics-devel at lists.alioth.debian.org
> > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/forensics-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.alioth.debian.org/pipermail/forensics-devel/attachments/20161220/b9df56c9/attachment-0001.html>