Hi Denis,
I've been investigating for the reason of the SIGSEGV signal.
Valgrind tells me that I'm reading an already-freed sector.
I've added some debug information in:
- src/sim.c:sim_remove: see below
- src/simfs.c:sim_fs_context_free: freed sim_context
- src/simfs.c:sim_fs_op_free: freed sim_fs_op and sim_fs_op::context pointer
Here is the sim_remove function called when disabling the gemalto's plugin
static void sim_remove(struct ofono_atom *atom)
{
struct ofono_sim *sim = __ofono_atom_get_data(atom);
DBG("atom: %p", atom);
if (sim == NULL)
return;
if (sim->driver != NULL && sim->driver->remove != NULL)
sim->driver->remove(sim);
sim_free_state(sim);
DBG("simfs"); // added
sim_fs_free(sim->simfs);
sim->simfs = NULL;
DBG("simfs_isim"); // added
sim_fs_free(sim->simfs_isim);
sim->simfs_isim = NULL;
g_free(sim);
}
I've launched Ofono with valgrind (I've added comments to the logs):
ofonod[30124]: src/sim.c:sim_remove() atom: 0x4e81d88
ofonod[30124]: src/simfs.c:sim_fs_context_free() 0x4e868f8
ofonod[30124]: src/simfs.c:sim_fs_context_free() 0x4ef6a08
ofonod[30124]: src/simfs.c:sim_fs_op_free() 0x4ef6a08, 0x3c, context:
0x4eb7fb0
ofonod[30124]: src/simfs.c:sim_fs_context_free() 0x4ef6b38
ofonod[30124]: src/simfs.c:sim_fs_op_free() 0x4ef6b38, 0x3c, context:
0x4eb7fb0
ofonod[30124]: src/simfs.c:sim_fs_context_free() **0x4eb7fb0** // ->
This is freed in sim_free_state(sim);
ofonod[30124]: src/sim.c:sim_remove() simfs // -> Going in
sim_fs_free(sim->simfs);
ofonod[30124]: src/simfs.c:sim_fs_free() 0x4e845a8
ofonod[30124]: src/simfs.c:sim_fs_op_free() 0x4ef67a8, 0x3c, context:
**0x4eb7fb0** // Already freed
==30124== Invalid read of size 4
==30124== at 0xE39A0: sim_fs_op_free (simfs.c:99) // -> line: struct
sim_fs *fs = node->context->fs;
==30124== by 0x48B0303: g_queue_foreach (in
/usr/lib/libglib-2.0.so.0.3800.2)
==30124== Address **0x4eb7fb0** is 0 bytes inside a block of size 8 free'd
==30124== at 0x4835760: free (in
/usr/lib/valgrind/vgpreload_memcheck-arm-linux.so)
==30124==
ofonod[30124]: src/sim.c:sim_remove() simfs_isim
ofonod[30124]: src/simfs.c:sim_fs_free() (nil)
What do you think about this?
Best regards,
Gabriel
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