Bug #696686 “packagekit segfaulting every time new updates are r...” : Bugs : packagekit package : Ubuntu

Revision history for this message

Juliano Ravasi (jravasi) wrote on 2011-01-03:

#1

Crash log Edit (1.8 MiB, text/plain)
Dependencies.txt Edit (1.2 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (350 bytes, text/plain; charset="utf-8")

Revision history for this message

Matthias Klumpp (ximion) wrote on 2011-01-03:

#2

This might be related to a bug which was fixed in PK 0.6.10 - I'll check this out when I'm back home.
Could you please run packagekitd in GDB?
$ sudo -s
$ killall packagekitd
$ gdb
$ file /usr/lib/packagekit/packagekitd
$ run
...and try fetching the package list again?

tags:

added: pk-backend-aptcc

Revision history for this message

Juliano Ravasi (jravasi) wrote on 2011-01-03:

#3

Download full text (6.8 KiB)

Matthias, thanks for your attention. Running in GDB gives:

~# gdb /usr/lib/packagekit/packagekitd
GNU gdb (GDB) 7.2-ubuntu
... {{gdb copyright blah blah suppressed}} ...
Reading symbols from /usr/lib/packagekit/packagekitd...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/lib/packagekit/packagekitd
[Thread debugging using libthread_db enabled]
[New Thread 0x7ffff38b4700 (LWP 9338)]
Reading package lists... Done
Building dependency tree
Reading state information... Done
[Thread 0x7ffff38b4700 (LWP 9338) exited]
[New Thread 0x7ffff38b4700 (LWP 9347)]
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_US
... {{apt update stuff suppressed}} ...
Ign http://download.virtualbox.org/virtualbox/debian/ maverick/non-free Translation-en
Ign http://download.virtualbox.org/virtualbox/debian/ maverick/non-free Translation-en_US
Reading package lists... Done
[Thread 0x7ffff38b4700 (LWP 9347) exited]
[New Thread 0x7ffff38b4700 (LWP 9401)]
[Thread 0x7ffff38b4700 (LWP 9401) exited]
[New Thread 0x7ffff38b4700 (LWP 9426)]
[Thread 0x7ffff38b4700 (LWP 9426) exited]
[New Thread 0x7ffff38b4700 (LWP 9427)]
[Thread 0x7ffff38b4700 (LWP 9427) exited]
[New Thread 0x7ffff38b4700 (LWP 9428)]
[Thread 0x7ffff38b4700 (LWP 9428) exited]
[New Thread 0x7ffff38b4700 (LWP 9429)]
[Thread 0x7ffff38b4700 (LWP 9429) exited]
[New Thread 0x7ffff38b4700 (LWP 9430)]
[Thread 0x7ffff38b4700 (LWP 9430) exited]
[New Thread 0x7ffff38b4700 (LWP 9432)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff38b4700 (LWP 9432)]
0x00007ffff3b09e3a in aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum) ()
   from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
(gdb) backtrace
#0 0x00007ffff3b09e3a in aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum) ()
   from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#1 0x00007ffff3b0be2e in aptcc::emit_packages(std::vector<std::pair<pkgCache::PkgIterator, pkgCache::VerIterator>, std::allocator<std::pair<pkgCache::PkgIterator, pkgCache::VerIterator> > >&, unsigned long, PkInfoEnum) () from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#2 0x00007ffff3b1c74c in ?? () from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#3 0x00007ffff5e377e4 in ?? () from /lib/libglib-2.0.so.0
#4 0x00007ffff7284971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5 0x00007ffff583392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6 0x0000000000000000 in ?? ()
(gdb) info locals
No symbol table info available.
(gdb) disasse
Dump of assembler code for function _ZN5aptcc12emit_packageERKN8pkgCache11PkgIteratorERKNS0_11VerIteratorEm10PkInfoEnum:
   0x00007ffff3b09de0 <+0>: mov %rbx,-0x30(%rsp)
   0x00007ffff3b09de5 <+5>: mov %rbp,-0x28(%rsp)
   0x00007ffff3b09dea <+10>: mov %r8d,%ebx
   0x00007ffff3b09ded <+13>: mov %r12,-0x20(%rsp)
   0x00007ffff3b09df2 <+18>: mov %r14,-0x10(%rsp)
   0x00007ffff3b09df7 <+23>: mov %rsi,%r12
   0x00007f...

Matthias, thanks for your attention. Running in GDB gives:

~# gdb /usr/lib/packagekit/packagekitd 
GNU gdb (GDB) 7.2-ubuntu
... {{gdb copyright blah blah suppressed}} ...
Reading symbols from /usr/lib/packagekit/packagekitd...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/lib/packagekit/packagekitd 
[Thread debugging using libthread_db enabled]
[New Thread 0x7ffff38b4700 (LWP 9338)]
Reading package lists... Done
Building dependency tree       
Reading state information... Done
[Thread 0x7ffff38b4700 (LWP 9338) exited]
[New Thread 0x7ffff38b4700 (LWP 9347)]
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_US
... {{apt update stuff suppressed}} ...
Ign http://download.virtualbox.org/virtualbox/debian/ maverick/non-free Translation-en
Ign http://download.virtualbox.org/virtualbox/debian/ maverick/non-free Translation-en_US
Reading package lists... Done
[Thread 0x7ffff38b4700 (LWP 9347) exited]
[New Thread 0x7ffff38b4700 (LWP 9401)]
[Thread 0x7ffff38b4700 (LWP 9401) exited]
[New Thread 0x7ffff38b4700 (LWP 9426)]
[Thread 0x7ffff38b4700 (LWP 9426) exited]
[New Thread 0x7ffff38b4700 (LWP 9427)]
[Thread 0x7ffff38b4700 (LWP 9427) exited]
[New Thread 0x7ffff38b4700 (LWP 9428)]
[Thread 0x7ffff38b4700 (LWP 9428) exited]
[New Thread 0x7ffff38b4700 (LWP 9429)]
[Thread 0x7ffff38b4700 (LWP 9429) exited]
[New Thread 0x7ffff38b4700 (LWP 9430)]
[Thread 0x7ffff38b4700 (LWP 9430) exited]
[New Thread 0x7ffff38b4700 (LWP 9432)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff38b4700 (LWP 9432)]
0x00007ffff3b09e3a in aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum) ()
   from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
(gdb) backtrace
#0  0x00007ffff3b09e3a in aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum) ()
   from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#1  0x00007ffff3b0be2e in aptcc::emit_packages(std::vector<std::pair<pkgCache::PkgIterator, pkgCache::VerIterator>, std::allocator<std::pair<pkgCache::PkgIterator, pkgCache::VerIterator> > >&, unsigned long, PkInfoEnum) () from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#2  0x00007ffff3b1c74c in ?? () from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#3  0x00007ffff5e377e4 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007ffff7284971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5  0x00007ffff583392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()
(gdb) info locals 
No symbol table info available.
(gdb) disasse
Dump of assembler code for function _ZN5aptcc12emit_packageERKN8pkgCache11PkgIteratorERKNS0_11VerIteratorEm10PkInfoEnum:
   0x00007ffff3b09de0 <+0>:     mov    %rbx,-0x30(%rsp)
   0x00007ffff3b09de5 <+5>:     mov    %rbp,-0x28(%rsp)
   0x00007ffff3b09dea <+10>:    mov    %r8d,%ebx
   0x00007ffff3b09ded <+13>:    mov    %r12,-0x20(%rsp)
   0x00007ffff3b09df2 <+18>:    mov    %r14,-0x10(%rsp)
   0x00007ffff3b09df7 <+23>:    mov    %rsi,%r12
   0x00007ffff3b09dfa <+26>:    mov    %r13,-0x18(%rsp)
   0x00007ffff3b09dff <+31>:    mov    %r15,-0x8(%rsp)
   0x00007ffff3b09e04 <+36>:    sub    $0xc8,%rsp
   0x00007ffff3b09e0b <+43>:    test   %r8d,%r8d
   0x00007ffff3b09e0e <+46>:    mov    %rdi,0x10(%rsp)
   0x00007ffff3b09e13 <+51>:    mov    %rdx,%rbp
   0x00007ffff3b09e16 <+54>:    mov    %rcx,%r14
   0x00007ffff3b09e19 <+57>:    jne    0x7ffff3b09e2b <_ZN5aptcc12emit_packageERKN8pkgCache11PkgIteratorERKNS0_11VerIteratorEm10PkInfoEnum+75>
   0x00007ffff3b09e1b <+59>:    mov    0x8(%rsi),%rax
   0x00007ffff3b09e1f <+63>:    xor    %ebx,%ebx
   0x00007ffff3b09e21 <+65>:    cmpb   $0x6,0x26(%rax)
   0x00007ffff3b09e25 <+69>:    setne  %bl
   0x00007ffff3b09e28 <+72>:    add    $0x1,%ebx
   0x00007ffff3b09e2b <+75>:    test   %r14,%r14
   0x00007ffff3b09e2e <+78>:    je     0x7ffff3b0a020 <_ZN5aptcc12emit_packageERKN8pkgCache11PkgIteratorERKNS0_11VerIteratorEm10PkInfoEnum+576>
   0x00007ffff3b09e34 <+84>:    mov    0x8(%rbp),%rax
   0x00007ffff3b09e38 <+88>:    xor    %esi,%esi
=> 0x00007ffff3b09e3a <+90>:    mov    0x4(%rax),%eax
   0x00007ffff3b09e3d <+93>:    test   %eax,%eax
   0x00007ffff3b09e3f <+95>:    jne    0x7ffff3b0a128 <_ZN5aptcc12emit_packageERKN8pkgCache11PkgIteratorERKNS0_11VerIteratorEm10PkInfoEnum+840>
   0x00007ffff3b09e45 <+101>:   lea    0x80(%rsp),%r15
   0x00007ffff3b09e4d <+109>:   lea    0x8f(%rsp),%rdx
   0x00007ffff3b09e55 <+117>:   mov    %r15,%rdi
   0x00007ffff3b09e58 <+120>:   callq  0x7ffff3afabc0 <_ZNSsC1EPKcRKSaIcE@plt>
   0x00007ffff3b09e5d <+125>:   mov    0x21d154(%rip),%rax        # 0x7ffff3d26fb8
   0x00007ffff3b09e64 <+132>:   lea    0x172ab(%rip),%rsi        # 0x7ffff3b21116
   0x00007ffff3b09e6b <+139>:   mov    $0x1,%ecx
   0x00007ffff3b09e70 <+144>:   mov    $0xffffffffffffffff,%rdx
   0x00007ffff3b09e77 <+151>:   mov    %r15,%rdi
   0x00007ffff3b09e7a <+154>:   lea    0x60(%rsp),%r13
   0x00007ffff3b09e7f <+159>:   add    $0x18,%rax
   0x00007ffff3b09e83 <+163>:   mov    %rax,0x70(%rsp)
   0x00007ffff3b09e88 <+168>:   mov    %rax,0x60(%rsp)
   0x00007ffff3b09e8d <+173>:   lea    0x70(%rsp),%rax
   0x00007ffff3b09e92 <+178>:   mov    %rax,0x8(%rsp)
   0x00007ffff3b09e97 <+183>:   callq  0x7ffff3afa790 <_ZNKSs12find_last_ofEPKcmm@plt>
   0x00007ffff3b09e9c <+188>:   mov    %rax,%rdx
   0x00007ffff3b09e9f <+191>:   mov    %rax,0x18(%rsp)
   0x00007ffff3b09ea4 <+196>:   mov    0x80(%rsp),%rax
   0x00007ffff3b09eac <+204>:   add    $0x1,%rdx
   0x00007ffff3b09eb0 <+208>:   cmp    -0x18(%rax),%rdx
---Type <return> to continue, or q <return> to quit--- q
(gdb) info reg
rax            0x8012c3387000   140818073022464
rbx            0x2      2
rcx            0x4      4
rdx            0x6fc820 7325728
rsi            0x0      0
rdi            0x6c9600 7116288
rbp            0x6fc820 0x6fc820
rsp            0x7ffff38b3ae0   0x7ffff38b3ae0
r8             0x0      0
r9             0x6fc838 7325752
r10            0x4      4
r11            0x401    1025
r12            0x6fc800 7325696
r13            0x4      4
r14            0x4      4
r15            0x8012c3387000   140818073022464
rip            0x7ffff3b09e3a   0x7ffff3b09e3a <aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum)+90>
eflags         0x10246  [ PF ZF IF RF ]
cs             0x33     51
ss             0x2b     43
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0
(gdb) p *(int*)((char*)$rax + 0x4)
Cannot access memory at address 0x8012c3387004

In fact, that memory address is not mapped according to /proc/self/maps. How that reference got into there is a mystery.

Isn't there a -dbg package for packagekit and friends?

Revision history for this message

Daniel Nicoletti (dantti) wrote on 2011-01-03:

#4

Thanks, this bug seems to be related to https://bugs.launchpad.net/ubuntu/+source/packagekit/+bug/691474
Can you please update packagekit-backend-aptcc (0.6.8-0ubuntu3.2) and see if it still happens?

Thanks

Revision history for this message

Juliano Ravasi (jravasi) wrote on 2011-01-03:

#5

Still no good. I just updated:

packagekit-backend-aptcc:
  Installed: 0.6.8-0ubuntu3.2
  Candidate: 0.6.8-0ubuntu3.2
  Version table:
*** 0.6.8-0ubuntu3.2 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.6.8-0ubuntu3 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages

And it is still segfaulting:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff38b4700 (LWP 4062)]
0x00007ffff3b09e38 in aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum) ()
from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
(gdb) bt
#0 0x00007ffff3b09e38 in aptcc::emit_package(pkgCache::PkgIterator const&, pkgCache::VerIterator const&, unsigned long, PkInfoEnum) ()
from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#1 0x00007ffff3b0be2e in aptcc::emit_packages(std::vector<std::pair<pkgCache::PkgIterator, pkgCache::VerIterator>, std::allocator<std::pair<pkgCache::PkgIterator, pkgCache::VerIterator> > >&, unsigned long, PkInfoEnum) () from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#2 0x00007ffff3b1c79c in ?? () from /usr/lib/packagekit-backend/libpk_backend_aptcc.so
#3 0x00007ffff5e377e4 in ?? () from /lib/libglib-2.0.so.0
#4 0x00007ffff7284971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5 0x00007ffff583392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6 0x0000000000000000 in ?? ()

Revision history for this message

Juliano Ravasi (jravasi) wrote on 2011-01-03:

#6

I found and installed the debug symbols at http://ddebs.ubuntu.com/pool/main/p/packagekit/packagekit-backend-aptcc-dbgsym_0.6.8-0ubuntu3.2_amd64.ddeb .

Then I got this little better backtrace.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff38b4700 (LWP 6187)]
0x00007ffff3b09e38 in Section (this=0x7f4e80, pkg=..., ver=..., filters=4,
    state=PK_INFO_ENUM_AVAILABLE) at /usr/include/apt-pkg/cacheiterators.h:207
207 inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;};
(gdb) bt
#0 0x00007ffff3b09e38 in Section (this=0x7f4e80, pkg=..., ver=..., filters=4,
    state=PK_INFO_ENUM_AVAILABLE) at /usr/include/apt-pkg/cacheiterators.h:207
#1 aptcc::emit_package (this=0x7f4e80, pkg=..., ver=..., filters=4,
    state=PK_INFO_ENUM_AVAILABLE) at apt.cpp:265
#2 0x00007ffff3b0be2e in aptcc::emit_packages (this=0x7f4e80, output=..., filters=4,
    state=PK_INFO_ENUM_UNKNOWN) at apt.cpp:371
#3 0x00007ffff3b1c79c in backend_search_files_thread (backend=<value optimized out>)
    at pk-backend-aptcc.cpp:905
#4 0x00007ffff5e377e4 in ?? () from /lib/libglib-2.0.so.0
#5 0x00007ffff7284971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#6 0x00007ffff583392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7 0x0000000000000000 in ?? ()
(gdb) print *this
value has been optimized out
(gdb) print S
value has been optimized out
(gdb) print S->Section
value has been optimized out
(gdb) print Owner
value has been optimized out
(gdb) print Owner->StrP
value has been optimized out

(gdb) up
#1 aptcc::emit_package (this=0x7f4e80, pkg=..., ver=..., filters=4,
state=PK_INFO_ENUM_AVAILABLE) at apt.cpp:265
265 }
(gdb) l
260 if (state == PK_INFO_ENUM_UNKNOWN) {
261 if (pkg->CurrentState == pkgCache::State::Installed) {
262 state = PK_INFO_ENUM_INSTALLED;
263 } else {
264 state = PK_INFO_ENUM_AVAILABLE;
265 }
266 }
267
268 if (filters != 0) {
269 std::string str = ver.Section();

(gdb) print ver
$1 = (
const pkgCache::VerIterator &) @0x800920: {<pkgCache::Iterator<pkgCache::Version, pkgCache::VerIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::Version, long, pkgCache::Version*, pkgCache::Version&>> = {<No data fields>}, _vptr.Iterator = 0x7ffff5dc99d0,
S = 0x8012c3387000, Owner = 0x7f96b0}, <No data fields>}
(gdb) print ver.S
$2 = (pkgCache::Version *) 0x8012c3387000
(gdb) print *ver.S
Cannot access memory at address 0x8012c3387000

Similar memory address. 0x8012c3387000 is outside any memory mapping in the packagekitd process. So, What is this "S" member inside pkgCache::Version, and how this strange pointer got into there? Now is up to someone who actually understands the aptcc code.

I found and installed the debug symbols at http://ddebs.ubuntu.com/pool/main/p/packagekit/packagekit-backend-aptcc-dbgsym_0.6.8-0ubuntu3.2_amd64.ddeb .

Then I got this little better backtrace.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff38b4700 (LWP 6187)]
0x00007ffff3b09e38 in Section (this=0x7f4e80, pkg=..., ver=..., filters=4, 
    state=PK_INFO_ENUM_AVAILABLE) at /usr/include/apt-pkg/cacheiterators.h:207
207             inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;};
(gdb) bt
#0  0x00007ffff3b09e38 in Section (this=0x7f4e80, pkg=..., ver=..., filters=4, 
    state=PK_INFO_ENUM_AVAILABLE) at /usr/include/apt-pkg/cacheiterators.h:207
#1  aptcc::emit_package (this=0x7f4e80, pkg=..., ver=..., filters=4, 
    state=PK_INFO_ENUM_AVAILABLE) at apt.cpp:265
#2  0x00007ffff3b0be2e in aptcc::emit_packages (this=0x7f4e80, output=..., filters=4, 
    state=PK_INFO_ENUM_UNKNOWN) at apt.cpp:371
#3  0x00007ffff3b1c79c in backend_search_files_thread (backend=<value optimized out>)
    at pk-backend-aptcc.cpp:905
#4  0x00007ffff5e377e4 in ?? () from /lib/libglib-2.0.so.0
#5  0x00007ffff7284971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#6  0x00007ffff583392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()
(gdb) print *this
value has been optimized out
(gdb) print S
value has been optimized out
(gdb) print S->Section
value has been optimized out
(gdb) print Owner
value has been optimized out
(gdb) print Owner->StrP
value has been optimized out

(gdb) up
#1  aptcc::emit_package (this=0x7f4e80, pkg=..., ver=..., filters=4, 
    state=PK_INFO_ENUM_AVAILABLE) at apt.cpp:265
265                     }
(gdb) l
260             if (state == PK_INFO_ENUM_UNKNOWN) {
261                     if (pkg->CurrentState == pkgCache::State::Installed) {
262                             state = PK_INFO_ENUM_INSTALLED;
263                     } else {
264                             state = PK_INFO_ENUM_AVAILABLE;
265                     }
266             }
267
268             if (filters != 0) {
269                     std::string str = ver.Section();

(gdb) print ver
$1 = (
    const pkgCache::VerIterator &) @0x800920: {<pkgCache::Iterator<pkgCache::Version, pkgCache::VerIterator>> = {<std::iterator<std::forward_iterator_tag, pkgCache::Version, long, pkgCache::Version*, pkgCache::Version&>> = {<No data fields>}, _vptr.Iterator = 0x7ffff5dc99d0, 
    S = 0x8012c3387000, Owner = 0x7f96b0}, <No data fields>}
(gdb) print ver.S
$2 = (pkgCache::Version *) 0x8012c3387000
(gdb) print *ver.S
Cannot access memory at address 0x8012c3387000

Similar memory address. 0x8012c3387000 is outside any memory mapping in the packagekitd process. So, What is this "S" member inside pkgCache::Version, and how this strange pointer got into there? Now is up to someone who actually understands the aptcc code.

Revision history for this message

Matthias Klumpp (ximion) wrote on 2011-05-09:

#7

Does this issue still occur with the latest PackageKit in Natty? If so, could you please install PK from my PPA and check agains PK == 0.6.14 too?
I still don't know why I can't reproduce this crash...

Changed in packagekit (Ubuntu):
status:	New → Incomplete

Revision history for this message

Juliano Ravasi (jravasi) wrote on 2011-05-10:

#8

Matthias, I can't reproduce this bug anymore after I used apt-get clean and did some other cleanup in other parts of apt (keyring, sources, etc). The bug may or may not have been fixed, but I don't have the environment to reproduce it anymore (even if my environment was broken before the cleanup, apt still shouldn't segfault). The only clue now is the detailed inspection I provided in comment #6.

Feel free to close this bug.

Revision history for this message

Matthias Klumpp (ximion) wrote on 2011-05-10:

#9

I'm leaving this bug in "Opinion" state. I think this is a bug in APT itself, reading a broken cache, but that's just a guess. If this issue happens again, we'll have this backtrace here for more information.
Thanks for your work!

Changed in packagekit (Ubuntu):
status:	Incomplete → Opinion
Changed in apt (Ubuntu):
status:	New → Opinion

Revision history for this message

Julian Andres Klode (juliank) wrote on 2011-05-10:

#10

Given that the iterator points outside of the cache, this seems to be a duplicate of bug 16467

Affects		Status	Importance	Assigned to	Milestone
	apt (Ubuntu)	Opinion	Undecided	Unassigned
	packagekit (Ubuntu)	Opinion	Undecided	Unassigned

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packagekit segfaulting every time new updates are retrieved

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packagekit segfaulting every time new updates are retrieved

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