[Dovecot] quick question

[David Halik]

>
> No guts no glory! So far, so good. The first patch started spewing messages 
> within seconds. I've been running for about twenty minutes with this version 
> and I haven't seen much of anything yet.
>
> I'll report back tomorrow after it has a day to burn in.
>

It's still a bit buggy. I haven't seen any messages in the last few hours, 
but then a user just dumped a gigantic 200MB core. Looking at dump it's 
because of some recursive loop that goes on forever:

#0  0x00002b656f2cba71 in _int_malloc (av=0x2b656f5ab9e0, bytes=368) at 
malloc.c:4650
 	iters = <value optimized out>
 	nb = 384
 	idx = 759448916
 	bin = <value optimized out>
 	victim = <value optimized out>
 	size = <value optimized out>
 	victim_index = <value optimized out>
 	remainder = <value optimized out>
 	remainder_size = <value optimized out>
 	block = <value optimized out>
 	bit = <value optimized out>
 	map = <value optimized out>
 	fwd = <value optimized out>
 	bck = <value optimized out>
#1  0x00002b656f2cd86d in __libc_calloc (n=<value optimized out>, 
elem_size=<value optimized out>) at malloc.c:4006
 	av = (struct malloc_state *) 0x2b656f5ab9e0
 	oldtop = (struct malloc_chunk *) 0x1da94070
 	p = <value optimized out>
 	bytes = 368
 	csz = <value optimized out>
 	oldtopsize = 12176
 	mem = (void *) 0x139cdc40
 	clearsize = <value optimized out>
 	nclears = <value optimized out>
 	d = <value optimized out>
#2  0x00000000004a8ea6 in pool_system_malloc (pool=<value optimized out>, 
size=368) at mempool-system.c:78
 	mem = <value optimized out>
#3  0x00000000004a4daa in i_stream_create_fd (fd=12, max_buffer_size=4096, 
autoclose_fd=96) at istream-file.c:156
 	fstream = <value optimized out>
 	st = {st_dev = 329008600, st_ino = 4452761, st_nlink = 27, st_mode 
= 799030, st_uid = 0, st_gid = 1, pad0 = 0, st_rdev = 109556025819520, 
st_size = 11013, st_blksize = 0, st_blocks = 95, st_atim = {
     tv_sec = 4096, tv_nsec = 8}, st_mtim = {tv_sec = 1264465811, tv_nsec = 
499376000}, st_ctim = {tv_sec = 1264465811, tv_nsec = 499378000}, __unused 
= {1264465811, 499384000, 0}}
#4  0x000000000043fba6 in maildir_uidlist_refresh (uidlist=0x139d6ab0) at 
maildir-uidlist.c:733
 	retry = 64
 	ret = -1
#5  0x0000000000440bb5 in maildir_uidlist_update_hdr 
(uidlist=0x2b656f5ab9e0, st=0x7fffc949d360) at maildir-uidlist.c:382
 	mhdr = (struct maildir_index_header *) 0x139cdc40
#6  0x000000000043ffff in maildir_uidlist_refresh (uidlist=0x139d6ab0) at 
maildir-uidlist.c:793
 	retry = false
 	ret = 1
#7  0x0000000000440bb5 in maildir_uidlist_update_hdr 
(uidlist=0x2b656f5ab9e0, st=0x7fffc949d4b0) at maildir-uidlist.c:382
 	mhdr = (struct maildir_index_header *) 0x139cdc40
#8  0x000000000043ffff in maildir_uidlist_refresh (uidlist=0x139d6ab0) at 
maildir-uidlist.c:793
 	retry = false
 	ret = 1
#9  0x0000000000440bb5 in maildir_uidlist_update_hdr 
(uidlist=0x2b656f5ab9e0, st=0x7fffc949d600) at maildir-uidlist.c:382
 	mhdr = (struct maildir_index_header *) 0x139cdc40
#10 0x000000000043ffff in maildir_uidlist_refresh (uidlist=0x139d6ab0) at 
maildir-uidlist.c:793
 	retry = false
 	ret = 1
#11 0x0000000000440bb5 in maildir_uidlist_update_hdr 
(uidlist=0x2b656f5ab9e0, st=0x7fffc949d750) at maildir-uidlist.c:382
 	mhdr = (struct maildir_index_header *) 0x139cdc40

...and on and on for thousands of lines. I gave up after 20K. ;)