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

[Eriberto Mota]

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
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>
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