package checkinstall
tag 702314 patch pending
thanks
Hi,
I can reproduce this on amd64 and i386. The following is from
fisher.debian.org (i386):
/bin/dash -c
'LD_PRELOAD=/home/lindi/debian/debian-checkinstall/checkinstall-1.6.2/installwatch/installwatch.so
exec cat /etc/motd'
Illegal instruction
Debugger shows that the crash happens at 0x2807ac72 which is mapped to
the installwatch.so according to /proc.
Program received signal SIGILL, Illegal instruction.
0x2807ac72 in ?? () from /lib/ld.so.1
(gdb) x/4i $eip-6
0x2807ac6c: lea 0x10(%ebp),%eax
0x2807ac6f: mov %eax,-0xc(%ebp)
=> 0x2807ac72: ud2
0x2807ac74: push %ebp
This is the last instruction of the open function. objdump of the .so
confirms that the function indeed contains some "ud2a" instruction:
00006c11 <open>:
6c11: 55 push %ebp
6c12: 89 e5 mov %esp,%ebp
6c14: 53 push %ebx
6c15: 81 ec 64 18 00 00 sub $0x1864,%esp
6c1b: e8 d9 34 00 00 call a0f9 <__x86.get_pc_thunk.bx>
6c20: 81 c3 b4 54 00 00 add $0x54b4,%ebx
6c26: 8b 83 f4 ff ff ff mov -0xc(%ebx),%eax
6c2c: 8b 00 mov (%eax),%eax
6c2e: 8d 50 01 lea 0x1(%eax),%edx
6c31: 8b 83 f4 ff ff ff mov -0xc(%ebx),%eax
6c37: 89 10 mov %edx,(%eax)
6c39: 8b 83 08 1a 00 00 mov 0x1a08(%ebx),%eax
6c3f: 85 c0 test %eax,%eax
6c41: 75 05 jne 6c48 <open+0x37>
6c43: e8 66 a6 ff ff call 12ae <initialize>
6c48: 8b 45 0c mov 0xc(%ebp),%eax
6c4b: 89 44 24 0c mov %eax,0xc(%esp)
6c4f: 8b 45 08 mov 0x8(%ebp),%eax
6c52: 89 44 24 08 mov %eax,0x8(%esp)
6c56: 8d 83 47 ec ff ff lea -0x13b9(%ebx),%eax
6c5c: 89 44 24 04 mov %eax,0x4(%esp)
6c60: c7 04 24 02 00 00 00 movl $0x2,(%esp)
6c67: e8 15 af ff ff call 1b81 <debug>
6c6c: 8d 45 10 lea 0x10(%ebp),%eax
6c6f: 89 45 f4 mov %eax,-0xc(%ebp)
6c72: 0f 0b ud2a
Now, the build log talks about this:
gcc -Wall -c -D_GNU_SOURCE -DPIC -fPIC -D_REENTRANT -DVERSION=\"0.7.0beta7\"
installwatch.c
installwatch.c: In function '__instw_printdirent64':
installwatch.c:1037:4: warning: format '%lld' expects argument of type 'long
long int', but argument 4 has type 'unsigned int' [-Wformat]
installwatch.c:1037:4: warning: format '%lld' expects argument of type 'long
long int', but argument 5 has type 'int' [-Wformat]
installwatch.c: In function 'openat':
installwatch.c:3835:11: warning: 'short unsigned int' is promoted to 'int' when
passed through '...' [enabled by default]
installwatch.c:3835:11: note: (so you should pass 'int' not 'short unsigned
int' to 'va_arg')
installwatch.c:3835:11: note: if this code is reached, the program will abort
installwatch.c: In function 'open64':
installwatch.c:3598:9: warning: 'short unsigned int' is promoted to 'int' when
passed through '...' [enabled by default]
installwatch.c:3598:9: note: if this code is reached, the program will abort
installwatch.c: In function 'open':
installwatch.c:2821:9: warning: 'short unsigned int' is promoted to 'int' when
passed through '...' [enabled by default]
installwatch.c:2821:9: note: if this code is reached, the program will abort
installwatch.c: In function 'fopen':
installwatch.c:2539:7: warning: 'result' may be used uninitialized in this
function [-Wuninitialized]
installwatch.c:2509:8: note: 'result' was declared here
ld -shared -o installwatch.so installwatch.o -ldl -lc
I tried to register to upstream bug tracker but while writing this I
still haven't received the confirmation email. I pushed patches to
http://git.debian.org/?p=collab-maint/checkinstall.git;a=summary and
built with pbuilder to see that there are no obvious regressions on
amd64 (linux).
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