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53 Mon, 07 Mar 2016 01:14:01 -0800 (PST)
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54 Date: Mon, 07 Mar 2016 09:14:00 +0000
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55 From: Gaute Hope <eg@gaute.vetsj.com>
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56 Subject: Re: talloc_abort in notmuch_thread_get_tags () when db has been
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58 To: David Bremner <david@tethera.net>, notmuch@notmuchmail.org
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59 References: <1453121100-astroid-2-c62fwcrm91-18877@strange>
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80 Gaute Hope writes on January 18, 2016 13:45:
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81 > David Bremner writes on January 18, 2016 13:25:
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82 >> The most likely cause of such a crash looks to me like nm_thread is NULL
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83 >> or corrupted when passed in to get_tags. It's used without checking as a
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84 >> talloc context, and that call to talloc never returns.
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87 > Ok, I'll check some further. I am checking whether nm_thread is NULL
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92 The stack trace that I get is as follows:
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95 Stack trace of thread 15719:
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96 #0 0x00007fc80cd9f2a8 raise (libc.so.6)
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97 #1 0x00007fc80cda072a abort (libc.so.6)
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98 #2 0x00007fc80c95889c n/a (libtalloc.so.2)
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99 #3 0x00007fc80c95a02d talloc_named_const (libtalloc.so.2)
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100 #4 0x00007fc814d674c5 _notmuch_string_list_create (libnotm=
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102 #5 0x00007fc814d75f32 notmuch_thread_get_tags (libnotmuch.=
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104 #6 0x00000000004757cb _ZN7Astroid13NotmuchThread8get_tagsE=
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105 P15_notmuch_thread (astroid)
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110 1) start a long running query loading in the background
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111 2) modify the db enough for the query to get invalidated.
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113 as far as I can see, there is _no_ way to catch this error without
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114 completely crashing the application. I would have to isolate this code
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115 in a separate process or trap SIGABRT (which is certainly messy).
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117 Best regards, Gaute
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