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[Bug libc/20468] SIGSEGV in internal_getent on arm64 xenial
- From: "sokoow at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 15 Aug 2016 16:58:06 +0000
- Subject: [Bug libc/20468] SIGSEGV in internal_getent on arm64 xenial
- Auto-submitted: auto-generated
- References: <bug-20468-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20468
--- Comment #5 from sokoow at gmail dot com ---
(gdb) info registers
rax 0x7ffff7702648 140737344710216
rbx 0x7fffffff 2147483647
rcx 0x6f6c09312e302e30 8028802342527708720
rdx 0x0 0
rsi 0x7fffe8000b04 140737085704964
rdi 0x7ffff77015a4 140737344705956
rbp 0x7fffe80008c0 0x7fffe80008c0
rsp 0x7ffff7701420 0x7ffff7701420
r8 0x7fffe8000b04 140737085704964
r9 0x7ffff7702648 140737344710216
r10 0x80000 524288
r11 0x246 582
r12 0x7ffff7701590 140737344705936
r13 0x7ffff7701590 140737344705936
r14 0x408 1032
r15 0x31 49
rip 0x7ffff5c82259 0x7ffff5c82259 <internal_getent+233>
eflags 0x10207 [ CF PF IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
asm dump:
0x00007ffff5c82235 <+197>: pop %rbx
0x00007ffff5c82236 <+198>: pop %rbp
0x00007ffff5c82237 <+199>: pop %r12
0x00007ffff5c82239 <+201>: pop %r13
0x00007ffff5c8223b <+203>: pop %r14
0x00007ffff5c8223d <+205>: pop %r15
0x00007ffff5c8223f <+207>: retq
0x00007ffff5c82240 <+208>: callq 0x7ffff5c81180 <__ctype_b_loc@plt>
0x00007ffff5c82245 <+213>: mov %r12,%r13
0x00007ffff5c82248 <+216>: mov %rax,%r9
0x00007ffff5c8224b <+219>: mov (%rax),%rdx
0x00007ffff5c8224e <+222>: jmp 0x7ffff5c82254 <internal_getent+228>
0x00007ffff5c82250 <+224>: add $0x1,%r13
0x00007ffff5c82254 <+228>: movsbq 0x0(%r13),%r15
=> 0x00007ffff5c82259 <+233>: testb $0x20,0x1(%rdx,%r15,2)
0x00007ffff5c8225f <+239>: mov %r15,%r14
0x00007ffff5c82262 <+242>: jne 0x7ffff5c82250 <internal_getent+224>
0x00007ffff5c82264 <+244>: test %r15b,%r15b
0x00007ffff5c82267 <+247>: je 0x7ffff5c821d0 <internal_getent+96>
0x00007ffff5c8226d <+253>: cmp $0x23,%r15b
0x00007ffff5c82271 <+257>: je 0x7ffff5c821d0 <internal_getent+96>
0x00007ffff5c82277 <+263>: cmp 0x10(%rsp),%r13
0x00007ffff5c8227c <+268>: jae 0x7ffff5c824ca <internal_getent+858>
0x00007ffff5c82282 <+274>: cmp %r12,%r13
0x00007ffff5c82285 <+277>: jb 0x7ffff5c824ca <internal_getent+858>
0x00007ffff5c8228b <+283>: xor %esi,%esi
0x00007ffff5c8228d <+285>: mov %r13,%rdi
0x00007ffff5c82290 <+288>: mov %r9,0x48(%rsp)
0x00007ffff5c82295 <+293>: mov %rdx,0x40(%rsp)
0x00007ffff5c8229a <+298>: callq 0x7ffff5c810c0 <__rawmemchr@plt>
0x00007ffff5c8229f <+303>: mov 0x40(%rsp),%rdx
0x00007ffff5c822a4 <+308>: mov 0x48(%rsp),%r9
0x00007ffff5c822a9 <+313>: add $0x1,%rax
0x00007ffff5c822ad <+317>: mov %rax,0x30(%rsp)
0x00007ffff5c822b2 <+322>: cmp $0xa,%r14d
0x00007ffff5c822b6 <+326>: mov %r13,%rcx
0x00007ffff5c822b9 <+329>: je 0x7ffff5c824e8 <internal_getent+888>
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