dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed.
Am 12.10.2015 um 20:21 schrieb Marius Karthaus:
Hi All, I'm encountering the same issue and the problem seems to be the function "p_string_erase" in "dm_string.c" The assertion around line 160 fails because the 'len' is bigger than the S->used (pos is always 0 as far as i've seen). I'm assuming this is because 'len' represents the line-count for the operation, and S->used holds the size of the array of parsed lines. My guess is malformed messages cause the system to believe there are N lines where there are in fact only M lines available in the array. The p_string_erase function gets called with a bad / too big argument 'len', tests the assertion and just exits (which is a huge over-reaction for production code) Because I did not have time or the means to analyse the true nature of the code I've just implemented a dirty workaround and hoped for the best, which at this point seems to be working just fine. Untill someone comes up with a true fix I suggest replacing the function with this: T p_string_erase(T S, size_t pos, int len) { assert(S); assert(pos <= S->used); // attempted workaround by marius size_t tw=len; if (tw > S->used){ fprintf(stderr, "ASSERT WILL NOW CRASH BUT LETS ATTEMPT A WORKAROUND [%zu] [%zu] [%u] [%s]\n",S->used,pos,len,S->str); len = S->used; } // END OF WORKAROUND if (len < 0) len = S->used - pos; else { assert (pos + len <= S->used); if (pos + len < S->used) memmove (S->str + pos, S->str + pos + len, S->used - (pos + len)); } S->used -= len; S->str[S->used] = 0; return S; } Regards, Marius Karthaus BudgetDedicated.com Op 27-09-15 om 11:50 schreef Reindl Harald:that's not funny and leads in multiple crashes and systemd-restart of dbmail-imapd for two days now and it appears to be triggered by specific clients because it was away for many hours and started again in the evening every few minutes Sep 27 11:09:46 mail systemd: dbmail-imapd.service: main process exited, code=killed, status=6/ABRT Sep 27 11:09:46 mail systemd: Unit dbmail-imapd.service entered failed state. Sep 27 11:09:46 mail systemd: dbmail-imapd.service failed. Sep 27 11:09:47 mail systemd: dbmail-imapd.service holdoff time over, scheduling restart. Sep 27 11:09:47 mail systemd: Stopping DBMail IMAP Server... Sep 27 11:09:47 mail systemd: Starting DBMail IMAP Server... Sep 27 11:09:47 mail systemd: Started DBMail IMAP Server. Sep 27 11:10:04 mail systemd: dbmail-imapd.service: main process exited, code=killed, status=6/ABRT Sep 27 11:10:04 mail systemd: Unit dbmail-imapd.service entered failed state. Sep 27 11:10:04 mail systemd: dbmail-imapd.service failed. Sep 27 11:10:05 mail systemd: dbmail-imapd.service holdoff time over, scheduling restart. Sep 27 11:10:05 mail systemd: Stopping DBMail IMAP Server... Sep 27 11:10:05 mail systemd: Starting DBMail IMAP Server... Sep 27 11:10:05 mail systemd: Started DBMail IMAP Server. Sep 27 11:12:25 mail systemd: dbmail-imapd.service: main process exited, code=killed, status=6/ABRT Sep 27 11:12:25 mail systemd: Unit dbmail-imapd.service entered failed state. Sep 27 11:12:25 mail systemd: dbmail-imapd.service failed. Sep 27 11:12:26 mail systemd: dbmail-imapd.service holdoff time over, scheduling restart. Sep 27 11:12:26 mail systemd: Stopping DBMail IMAP Server... Sep 27 11:12:26 mail systemd: Starting DBMail IMAP Server... Sep 27 11:12:26 mail systemd: Started DBMail IMAP Server. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed. dbmail-imapd: dm_string.c:161: p_string_erase: Assertion `pos + len <= S->used' failed.
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