[Bug 4550] Segfault in Busybox while installing Ubuntu 11.10

bugzilla at busybox.net bugzilla at busybox.net
Fri Feb 10 22:56:34 UTC 2012


https://bugs.busybox.net/show_bug.cgi?id=4550

--- Comment #24 from Franz A. <james at wolke7.net> 2012-02-10 22:56:33 UTC ---
I am not sure, if this information is helpful for you:
In a previous test run (different build) I got the results below.
The possibly interesting thing there is, that again none of the addresses point
to a valid address. But I noticed, that all 'addresses' end with "...f13", i.e.
probably the same pattern was used when overwriting the stack or whatever.

Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 kernel: [  988.968953] sh[5630]: segfault at 4 ip 00f3bf13 sp
b$
Feb  3 20:58:40 kernel: [  988.972801] sh[5632]: segfault at 4 ip 00234f13 sp
b$
Feb  3 20:58:40 kernel: [  988.976872] sh[5634]: segfault at 4 ip 00268f13 sp
b$
Feb  3 20:58:40 kernel: [  988.980672] sh[5636]: segfault at 4 ip 006f2f13 sp
b$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 kernel: [  988.985048] sh[5638]: segfault at 4 ip 00465f13 sp
b$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 kernel: [  988.988930] sh[5640]: segfault at 4 ip 00a0cf13 sp
b$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 kernel: [  988.992841] sh[5642]: segfault at 4 ip 00bd0f13 sp
b$


Feb  3 20:58:40 kernel: [  988.996741] sh[5644]: segfault at 4 ip 00f13f13 sp
b$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 kernel: [  989.000677] sh[5646]: segfault at 4 ip 0044ff13 sp
b$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$
Feb  3 20:58:40 kernel: [  989.004558] sh[5648]: segfault at 4 ip 00deff13 sp
b$
Feb  3 20:58:40 in-target: install-info: warning: no info dir entry in
`/usr/sh$

Reading symbols from /tmp/initrd_tmp/bin/busybox...done.
(gdb) disas 0x00f3bf13
No function contains specified address.
(gdb) disas 0x00234f13
No function contains specified address.
(gdb) disas 0x00465f13
No function contains specified address.
(gdb) disas 0x00268f13
No function contains specified address.
(gdb) disas 0x00f13f13
No function contains specified address.
(gdb) disas 0x00deff13
No function contains specified address.

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