segmentfault #1
Description
kernel: traps: ls[6598] general protection ip:7fc701007c85 sp:7ffc7f0f5248 error:0 in libc-2.17.so[7fc700f1a000+1b6000]
(gdb) bt
#0 0x00007f7b40633c85 in tcgetattr () from /lib64/libc.so.6
#1 0x00007f7b406301fc in isatty () from /lib64/libc.so.6
#2 0x0000000000402a8f in ?? ()
#3 0x00007f7b4118a8f0 in __frame_dummy_init_array_entry () from ./libzpoline.so
#4 0x00007f7b40f680fe in asm_syscall_hook () from ./libzpoline.so
#5 0x0000000000000000 in ?? ()
(gdb) f 3
#3 0x00007f7b4118a8f0 in __frame_dummy_init_array_entry () from ./libzpoline.so
(gdb) disas
Dump of assembler code for function __frame_dummy_init_array_entry:
0x00007f7b4118a8e8: (bad)
0x00007f7b4118a8e9: jg 0x7f7b4118a8e1
0x00007f7b4118a8eb: rex jnp 0x7f7b4118a96d <rexes.11457+77>
0x00007f7b4118a8ee: add %al,(%rax)
=> 0x00007f7b4118a8f0: mov $0x7b,%al
0x00007f7b4118a8f2: testb $0x7f,0x7b(%rax)
0x00007f7b4118a8f6: add %al,(%rax)
End of assembler dump.
(gdb) f 4
#4 0x00007f7b40f680fe in asm_syscall_hook () from ./libzpoline.so
(gdb) disas
Dump of assembler code for function asm_syscall_hook:
0x00007f7b40f680da <+0>: pop %rax
0x00007f7b40f680db <+1>: cmp $0xf,%rax
0x00007f7b40f680df <+5>: je 0x7f7b40f68110 <do_rt_sigreturn>
0x00007f7b40f680e1 <+7>: push %rbp
0x00007f7b40f680e2 <+8>: mov %rsp,%rbp
0x00007f7b40f680e5 <+11>: and $0xfffffffffffffff0,%rsp
0x00007f7b40f680e9 <+15>: push %r11
0x00007f7b40f680eb <+17>: push %r9
0x00007f7b40f680ed <+19>: push %r8
0x00007f7b40f680ef <+21>: push %rdi
0x00007f7b40f680f0 <+22>: push %rsi
0x00007f7b40f680f1 <+23>: push %rdx
0x00007f7b40f680f2 <+24>: push %rcx
0x00007f7b40f680f3 <+25>: pushq 0x8(%rbp)
0x00007f7b40f680f6 <+28>: push %rax
0x00007f7b40f680f7 <+29>: push %r10
0x00007f7b40f680f9 <+31>: callq 0x7f7b40f67620 syscall_hook@plt
=> 0x00007f7b40f680fe <+36>: pop %r10
0x00007f7b40f68100 <+38>: add $0x10,%rsp
0x00007f7b40f68104 <+42>: pop %rcx
0x00007f7b40f68105 <+43>: pop %rdx
0x00007f7b40f68106 <+44>: pop %rsi
0x00007f7b40f68107 <+45>: pop %rdi
0x00007f7b40f68108 <+46>: pop %r8
0x00007f7b40f6810a <+48>: pop %r9
0x00007f7b40f6810c <+50>: pop %r11
0x00007f7b40f6810e <+52>: leaveq
0x00007f7b40f6810f <+53>: retq
End of assembler dump.
(gdb) info registers
rax 0x0 0
rbx 0x0 0
rcx 0x8a3b 35387
rdx 0x500 1280
rsi 0x10004157f1c03 281492517231619
rdi 0x500000500 21474837760
rbp 0x2 0x2
rsp 0x7ffd658780e0 0x7ffd658780e0
r8 0x8a3b000000bf 151986007703743
r9 0x10004157f1c0300 72062084411294464
r10 0x0 0
r11 0x170f12001a131100 1661566579169759488
r12 0x7ffd65878248 140726306832968
r13 0x7ffd65878240 140726306832960
r14 0x0 0
r15 0x0 0
rip 0x7f7b40f680fe 0x7f7b40f680fe <asm_syscall_hook+36>
eflags 0x10246 [ PF ZF IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0