Package: libproc-processtable-perl Version: 0.45-1 Control: forwarded -1 https://rt.cpan.org/Public/Bug/Display.html?id=82175
The following bug was reported in Ubuntu against libproc-processtable-perl: ----- Forwarded message from "Matthew L. Dailey" <[email protected]> ----- Date: Sun, 23 Dec 2012 15:56:11 -0000 From: "Matthew L. Dailey" <[email protected]> To: [email protected] Subject: [Pkg-perl-maintainers] [Bug 1093289] [NEW] Buffer overflow in pctcpu Reply-To: Bug 1093289 <[email protected]> Public bug reported: With long-running jobs on a multi-cpu machine (>10 logical CPUs), the percent CPU utilization of a process can exceed 1000%, causing a buffer overflow in pctcpu. Here is /proc/<pid>/stat for a process that produces the overflow: # cat /proc/23427/stat 23427 (sdevice) S 16424 23427 16424 34816 23427 4202496 3854777420 3716 11765 0 179490227 1688781 0 0 20 0 44 0 155125884 173169319936 30671991 18446744073709551615 4194304 190125333 140736691917600 140736691909504 47611949540385 0 8192 0 640 18446744073709551615 0 0 17 15 0 0 1540 0 0 And, here's the backtrace if I compile with debugging symbols and run in gdb: #0 0x00007ffff76d5425 in raise () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007ffff76d8b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007ffff771339e in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #3 0x00007ffff77a9807 in __fortify_fail () from /lib/x86_64-linux-gnu/libc.so.6 #4 0x00007ffff77a8700 in __chk_fail () from /lib/x86_64-linux-gnu/libc.so.6 #5 0x00007ffff77a7b69 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #6 0x00007ffff76eefcb in __printf_fp () from /lib/x86_64-linux-gnu/libc.so.6 #7 0x00007ffff76ea5b8 in vfprintf () from /lib/x86_64-linux-gnu/libc.so.6 #8 0x00007ffff77a7c04 in __vsprintf_chk () from /lib/x86_64-linux-gnu/libc.so.6 #9 0x00007ffff77a7b4d in __sprintf_chk () from /lib/x86_64-linux-gnu/libc.so.6 #10 0x00007ffff6473297 in sprintf (__s=0x7dc4f8 "1051.1", __fmt=0x7ffff6474f9d "%3.2f") at /usr/include/x86_64-linux-gnu/bits/stdio2.h:34 #11 calc_prec (prs=0x7dc410, format_str=0x7dc510 "iiisiiiillllljjjjijllljjsiiiiiiSSsSS", mem_pool=<optimized out>) at OS.c:542 #12 OS_get_table () at OS.c:651 #13 0x00007ffff6474ab8 in XS_Proc__ProcessTable_table ( my_perl=<optimized out>, cv=<optimized out>) at ProcessTable.xs:353 #14 0x00007ffff7b1384f in Perl_pp_entersub () from /usr/lib/libperl.so.5.14 #15 0x00007ffff7b0ace6 in Perl_runops_standard () from /usr/lib/libperl.so.5.14 #16 0x00007ffff7aac36a in perl_run () from /usr/lib/libperl.so.5.14 #17 0x0000000000400db9 in main () I have reported this at https://rt.cpan.org/Public/Bug/Display.html?id=82175 and will put together a debdiff against 0.45-3 with my patch. ** Affects: libproc-processtable-perl (Ubuntu) Importance: Undecided Status: New ----- End forwarded message ----- Regards, Salvatore
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