Hi Slava,
On 10/23/2017 04:17 AM, Slava Monich wrote:
Leaving them there may result in invalid reads like this:
==2312== Invalid read of size 4
==2312== at 0xAB8C0: dispatch_sources (gatmux.c:134)
==2312== by 0xAC5D3: channel_close (gatmux.c:479)
==2312== by 0x4AE8885: g_io_channel_shutdown (giochannel.c:523)
==2312== by 0x4AE8A1D: g_io_channel_unref (giochannel.c:240)
==2312== by 0xAC423: watch_finalize (gatmux.c:426)
==2312== by 0x4AF2CC9: g_source_unref_internal (gmain.c:2048)
==2312== by 0x4AF44E1: g_source_destroy_internal (gmain.c:1230)
==2312== by 0x4AF44E1: g_source_destroy (gmain.c:1256)
==2312== by 0x4AF5257: g_source_remove (gmain.c:2282)
==2312== by 0xAB5CB: io_shutdown (gatio.c:325)
==2312== by 0xAB667: g_at_io_unref (gatio.c:345)
==2312== by 0xA72C7: at_chat_unref (gatchat.c:972)
==2312== by 0xA829B: g_at_chat_unref (gatchat.c:1446)
==2312== Address 0x51420f0 is 56 bytes inside a block of size 60 free'd
==2312== at 0x4840B28: free (vg_replace_malloc.c:530)
==2312== by 0x4AF2D33: g_source_unref_internal (gmain.c:2075)
==2312== by 0x4AF44E1: g_source_destroy_internal (gmain.c:1230)
==2312== by 0x4AF44E1: g_source_destroy (gmain.c:1256)
==2312== by 0x4AF5257: g_source_remove (gmain.c:2282)
==2312== by 0xAB46B: g_at_io_set_write_handler (gatio.c:283)
==2312== by 0xA713F: at_chat_suspend (gatchat.c:938)
==2312== by 0xA72B7: at_chat_unref (gatchat.c:971)
==2312== by 0xA829B: g_at_chat_unref (gatchat.c:1446)
==2312== Block was alloc'd at
==2312== at 0x4841BF0: calloc (vg_replace_malloc.c:711)
==2312== by 0x4AFB117: g_malloc0 (gmem.c:124)
==2312== by 0x4AF401F: g_source_new (gmain.c:892)
==2312== by 0xAC6A7: channel_create_watch (gatmux.c:506)
==2312== by 0x4AE7C4F: g_io_add_watch_full (giochannel.c:649)
==2312== by 0xAB4EB: g_at_io_set_write_handler (gatio.c:297)
==2312== by 0xA7103: chat_wakeup_writer (gatchat.c:931)
==2312== by 0xA753F: at_chat_send_common (gatchat.c:1045)
==2312== by 0xA850F: g_at_chat_send (gatchat.c:1502)
It's also necessary to add additional references to the sources
for the duration of the dispatch_sources loop because any source
can be removed when any callback is invoked (and not necessarily
the one being dispatched).
---
gatchat/gatmux.c | 109 +++++++++++++++++++++++++++++++++++++++----------------
1 file changed, 77 insertions(+), 32 deletions(-)
Applied, thanks.
Regards,
-Denis
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