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Postings from November 2016
On Thu, 23 Apr 2015 09:31:36 GMT, brian.carpenter@gmail.com wrote:
> Built v5.21.12 (v5.21.11-10-ga8f582b) using the following command
> line:
>
> ./Configure -des -Dusedevel -DDEBUGGING -Dcc=afl-gcc -Doptimize=-O2\
> -g && AFL_HARDEN=1 make -j6 test-prep
>
> Bug found with AFL (http://lcamtuf.coredump.cx/afl)
This link is now giving a 404. Can someone provide a better link so that we can learn about "AFL"? Thanks.
>
> GDB output:
> perl: sv.c:2964: Perl_sv_2pv_flags: Assertion `((svtype)((sv)-
> >sv_flags & 0xff)) != SVt_PVAV && ((svtype)((sv)->sv_flags & 0xff)) !=
> SVt_PVHV && ((svtype)((sv)->sv_flags & 0xff)) != SVt_PVFM' failed.
>
> Program received signal SIGABRT, Aborted.
> [----------------------------------
> registers-----------------------------------]
> RAX: 0x0
> RBX: 0x7fffffffe624 --> 0x736574006c726570 ('perl')
> RCX: 0xffffffffffffffff
> RDX: 0x6
> RSI: 0x126d
> RDI: 0x126d
> RBP: 0x7ffff6ea9c67 --> 0x257325732500203a (': ')
> RSP: 0x7fffffffde68 --> 0x7ffff6d933e0 (<*__GI_abort+384>: mov
> rdx,QWORD PTR fs:0x10)
> RIP: 0x7ffff6d90165 (<*__GI_raise+53>: cmp rax,0xfffffffffffff000)
> R8 : 0x7ffff7fdc700 (0x00007ffff7fdc700)
> R9 : 0x5653203d21202929 (')) != SV')
> R10: 0x8
> R11: 0x202
> R12: 0xf3b378 ("((svtype)((sv)->sv_flags & 0xff)) != SVt_PVAV &&
> ((svtype)((sv)->sv_flags & 0xff)) != SVt_PVHV && ((svtype)((sv)-
> >sv_flags & 0xff)) != SVt_PVFM")
> R13: 0xf4fab0 ("Perl_sv_2pv_flags")
> R14: 0x7ffff6ea9c67 --> 0x257325732500203a (': ')
> R15: 0xb94
> EFLAGS: 0x202 (carry parity adjust zero sign trap INTERRUPT direction
> overflow)
> [-------------------------------------
> code-------------------------------------]
> 0x7ffff6d9015b <*__GI_raise+43>: movsxd rdi,eax
> 0x7ffff6d9015e <*__GI_raise+46>: mov eax,0xea
> 0x7ffff6d90163 <*__GI_raise+51>: syscall
> => 0x7ffff6d90165 <*__GI_raise+53>: cmp rax,0xfffffffffffff000
> 0x7ffff6d9016b <*__GI_raise+59>: ja 0x7ffff6d90182
> <*__GI_raise+82>
> 0x7ffff6d9016d <*__GI_raise+61>: repz ret
> 0x7ffff6d9016f <*__GI_raise+63>: nop
> 0x7ffff6d90170 <*__GI_raise+64>: test eax,eax
> [------------------------------------
> stack-------------------------------------]
> 0000| 0x7fffffffde68 --> 0x7ffff6d933e0 (<*__GI_abort+384>: mov
> rdx,QWORD PTR fs:0x10)
> 0008| 0x7fffffffde70 --> 0xf3b378 ("((svtype)((sv)->sv_flags & 0xff))
> != SVt_PVAV && ((svtype)((sv)->sv_flags & 0xff)) != SVt_PVHV &&
> ((svtype)((sv)->sv_flags & 0xff)) != SVt_PVFM")
> 0016| 0x7fffffffde78 --> 0x7ffff6eabc21 --> 0x706c6568007325 ('%s')
> 0024| 0x7fffffffde80 --> 0x7fffffffdea0 --> 0x3000000018
> 0032| 0x7fffffffde88 --> 0xb94
> 0040| 0x7fffffffde90 --> 0x7fffffffdf90 --> 0x7fffffffe624 -->
> 0x736574006c726570 ('perl')
> 0048| 0x7fffffffde98 --> 0x7ffff6dc41b6 (<__fxprintf+310>: lea
> rsp,[rbp-0x20])
> 0056| 0x7fffffffdea0 --> 0x3000000018
> [------------------------------------------------------------------------------
> ]
> Legend: code, data, rodata, value
> Stopped reason: SIGABRT
> 0x00007ffff6d90165 in *__GI_raise (sig=<optimized out>)
> at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> 64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or
> directory.
>
> System Info: Debian 7, Kernel 3.2.65-1+deb7u2 x86_64, GCC 4.9.2, libc
> 2.13-38+deb7u8
--
James E Keenan (jkeenan@cpan.org)
---
via perlbug: queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=124368
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