* David Halik <dha...@jla.rutgers.edu>:
>
> Ralf, you're seeing the same panic I've been going back and forth
> with Timo on for the last two weeks. Do you think you could run a
> couple of quick gdb commands? Timo asked me for these last week, but
> I thought it might be useful if they came from you as well for
> comparison. It also looks like you have optimization turned off which
> is great for debugging.
>
> From Timo...
>
> Could you do in gdb something like:
>
> fr 6 (or whatever frame gives usable results)
Yes, it's frame 6
> p *rec
(gdb) p *rec
$2 = {uid = 1721, flags = 8,
filename = 0x9c4e2b0
"1247223070.M198961P26186.postamt.charite.de,S=4080,W=4182:2,Sa", extensions =
0x0}
> p count
(gdb) p count
$3 = <value optimized out>
Sorry :(
> p *recs[0]
(gdb) p *recs[0]
$4 = {uid = 1962, flags = 8,
filename = 0x9c531a8
"1262613886.M868332P16003.postamt.charite.de,W=39324,S=38791:2,Sa", extensions
= 0x0}
> p *recs[1]
> p *recs[..up until count-1]
Since count is optimized out, how should I know?
OK, trial and error:
(gdb) p *recs[0]
$16 = {uid = 1962, flags = 8,
filename = 0x9c531a8
"1262613886.M868332P16003.postamt.charite.de,W=39324,S=38791:2,Sa",
extensions = 0x0}
(gdb) p *recs[1]
$17 = {uid = 1963, flags = 8,
filename = 0x9c53200
"1262613886.M868333P16003.postamt.charite.de,W=3061,S=2987:2,Sa",
extensions = 0x0}
(gdb) p *recs[2]
$18 = {uid = 1964, flags = 8,
filename = 0x9c53250
"1262613886.M868334P16003.postamt.charite.de,W=407687,S=402422:2,Sa",
extensions = 0x0}
(gdb) p *recs[3]
$19 = {uid = 1965, flags = 8,
filename = 0x9c532a8
"1262613886.M868335P16003.postamt.charite.de,W=3576,S=3496:2,RSa",
extensions = 0x0}
(gdb) p *recs[4]
$20 = {uid = 1966, flags = 8,
filename = 0x9c532f8
"1262613886.M868336P16003.postamt.charite.de,W=20045,S=19472:2,Sa",
extensions = 0x0}
(gdb) p *recs[5]
$21 = {uid = 1967, flags = 8,
filename = 0x9c53350
"1262613886.M868337P16003.postamt.charite.de,W=99371,S=97957:2,Sa",
extensions = 0x0}
(gdb) p *recs[6]
$22 = {uid = 1968, flags = 8,
filename = 0x9c533a8
"1262613886.M868338P16003.postamt.charite.de,W=4552,S=4453:2,Sa",
extensions = 0x0}
...
(gdb) p *recs[50]
$23 = {uid = 2012, flags = 8,
filename = 0x9c54260
"1262613886.M868382P16003.postamt.charite.de,W=29656,S=28920:2,Sa",
extensions = 0x0}
(gdb) p *recs[51]
$24 = {uid = 2013, flags = 8,
filename = 0x9c542b8
"1262613886.M868383P16003.postamt.charite.de,W=83093,S=81992:2,Sa",
extensions = 0x0}
(gdb) p *recs[52]
$25 = {uid = 2014, flags = 8,
filename = 0x9c54310
"1262613886.M868384P16003.postamt.charite.de,W=2104892,S=2077799:2,Sb",
extensions = 0x0}
(gdb) p *recs[53]
$26 = {uid = 2015, flags = 8,
filename = 0x9c54368
"1262613886.M868385P16003.postamt.charite.de,W=89389,S=88208:2,Sa",
extensions = 0x0}
(gdb) p *recs[54]
$27 = {uid = 2016, flags = 8,
filename = 0x9c543c0
"1262613886.M868386P16003.postamt.charite.de,W=12822,S=12457:2,Sa",
extensions = 0x0}
(gdb) p *recs[55]
$28 = {uid = 2017, flags = 8,
filename = 0x9c54428
"1262613886.M868387P16003.postamt.charite.de,W=14356,S=14096:2,Sa",
extensions = 0x0}
(gdb) p *recs[56]
$29 = {uid = 2018, flags = 8,
filename = 0x9c54480
"1262613886.M868388P16003.postamt.charite.de,W=15126,S=14718:2,Sa",
extensions = 0x0}
(gdb) p *recs[57]
Cannot access memory at address 0x0
> If count is large, the main things I want to know are:
>
> 1) Is the array sorted (recs[n]->uid < recs[n+1]->uid always)?
Yes, it's sorted!
> 2) is rec->uid anywhere in the recs array?
I don't understand this question. All the entries recs[0] ... recs[56]
are containing entries like the ones above.
> On 01/04/2010 05:09 AM, Ralf Hildebrandt wrote:
> >> From the log:
> >
> >Jan 3 20:26:07 postamt dovecot: IMAP(nixxxxx): copy: uid=3526, dest=Deleted
> >Messages, msgid=<dc8a4be5-41a0-4240-8f07-090e95414...@charite.de>, size=2726
> >Jan 3 20:26:07 postamt dovecot: IMAP(nixxxxx): delete: uid=3526,
> >msgid=<dc8a4be5-41a0-4240-8f07-090e95414...@charite.de>
> >Jan 3 20:26:11 postamt dovecot: IMAP(nixxxxx): expunge: uid=3526,
> >msgid=<dc8a4be5-41a0-4240-8f07-090e95414...@charite.de>, size=2726
> >Jan 3 20:26:42 postamt dovecot: IMAP(nixxxxx): copy: uid=415, box=Deleted
> >Messages, dest=INBOX,
> >msgid=<d539ffeb1001030758n1acc33c1m1fc67e0f1d227...@mail.gmail.com>,
> >size=3604
> >Jan 3 20:26:42 postamt dovecot: IMAP(nixxxxx):
> >/home/n/i/nixxxxx/Maildir/dovecot-uidlist: Duplicate file entry at line 1:
> >1262534293.M822904P8880.postamt.charite.de,S=3604,W=3690:2,RSaf (uid 3528 ->
> > 3531)
> >Jan 3 20:26:42 postamt dovecot: IMAP(nixxxxx): Panic: file
> >maildir-uidlist.c: line 403 (maildir_uidlist_records_array_delete):
> >assertion failed: (pos != NULL)
> >Jan 3 20:26:42 postamt dovecot: IMAP(nixxxxx): Raw backtrace: imap
> >[0x80f1631] -> imap [0x80f16a2] -> imap [0x80f1019] -> imap
> >[0x8088fa6] -> imap(maildir_uidlist_refresh+0x9e9) [0x8089fc9] -> imap
> >[0x8086704] -> imap(maildir_storage_sync_init+0x125) [0x8086be5] ->
> >imap(imap_sync_init+0x54) [0x8070434] -> imap [0x8062aa2] -> imap
> >[0x80a619c] -> imap(io_loop_handle_timeouts+0xe9) [0x80f9959] ->
> >imap(io_loop_handler_run+0x82) [0x80fa222] -> imap(io_loop_run+0x20)
> >[0x80f96f0] -> imap(main+0x5d2) [0x8070f52] ->
> >/lib/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb75bcb55] -> imap
> >[0x80602d1]
> >Jan 3 20:26:42 postamt dovecot: IMAP(nixxxxx): delete: uid=415, box=Deleted
> >Messages, msgid=<d539ffeb1001030758n1acc33c1m1fc67e0f1d227...@mail.gmail.com>
> >Jan 3 20:26:42 postamt dovecot: IMAP(nixxxxx): expunge: uid=415,
> >box=Deleted Messages,
> >msgid=<d539ffeb1001030758n1acc33c1m1fc67e0f1d227...@mail.gmail.com>,
> >size=3604
> >Jan 3 20:26:45 postamt dovecot: IMAP(nixxxxx): Disconnected: Logged out
> >bytes=63917/47203
> >Jan 3 20:26:45 postamt dovecot: IMAP(nixxxxx): Disconnected: Logged out
> >bytes=360/168380
> >Jan 3 20:26:45 postamt dovecot: IMAP(nixxxxx): Disconnected: Logged out
> >bytes=670290/672304
> >
> >
> >GNU gdb (GDB) 7.0-debian
> >Copyright (C) 2009 Free Software Foundation, Inc.
> >License GPLv3+: GNU GPL version 3 or later<http://gnu.org/licenses/gpl.html>
> >This is free software: you are free to change and redistribute it.
> >There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> >and "show warranty" for details.
> >This GDB was configured as "i486-linux-gnu".
> >For bug reporting instructions, please see:
> ><http://www.gnu.org/software/gdb/bugs/>...
> >Reading symbols from /usr/local/libexec/dovecot/imap...done.
> >Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from
> >/usr/lib/debug/lib/i686/cmov/libdl-2.10.2.so...done.
> >(no debugging symbols found)...done.
> >Loaded symbols for /lib/i686/cmov/libdl.so.2
> >Reading symbols from /lib/i686/cmov/librt.so.1...Reading symbols from
> >/usr/lib/debug/lib/i686/cmov/librt-2.10.2.so...done.
> >(no debugging symbols found)...done.
> >Loaded symbols for /lib/i686/cmov/librt.so.1
> >Reading symbols from /lib/i686/cmov/libc.so.6...Reading symbols from
> >/usr/lib/debug/lib/i686/cmov/libc-2.10.2.so...done.
> >(no debugging symbols found)...done.
> >Loaded symbols for /lib/i686/cmov/libc.so.6
> >Reading symbols from /lib/ld-linux.so.2...Reading symbols from
> >/usr/lib/debug/lib/ld-2.10.2.so...done.
> >(no debugging symbols found)...done.
> >Loaded symbols for /lib/ld-linux.so.2
> >Reading symbols from /lib/i686/cmov/libpthread.so.0...Reading symbols from
> >/usr/lib/debug/lib/i686/cmov/libpthread-2.10.2.so...done.
> >(no debugging symbols found)...done.
> >Loaded symbols for /lib/i686/cmov/libpthread.so.0
> >Reading symbols from
> >/usr/local/lib/dovecot/imap/lib10_quota_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib10_quota_plugin.so
> >Reading symbols from
> >/usr/local/lib/dovecot/imap/lib11_imap_quota_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib11_imap_quota_plugin.so
> >Reading symbols from
> >/usr/local/lib/dovecot/imap/lib11_trash_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib11_trash_plugin.so
> >Reading symbols from
> >/usr/local/lib/dovecot/imap/lib20_autocreate_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib20_autocreate_plugin.so
> >Reading symbols from /usr/local/lib/dovecot/imap/lib20_fts_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib20_fts_plugin.so
> >Reading symbols from
> >/usr/local/lib/dovecot/imap/lib20_mail_log_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib20_mail_log_plugin.so
> >Reading symbols from /usr/local/lib/dovecot/imap/lib20_zlib_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib20_zlib_plugin.so
> >Reading symbols from /usr/lib/libz.so.1...(no debugging symbols
> >found)...done.
> >Loaded symbols for /usr/lib/libz.so.1
> >Reading symbols from /lib/libbz2.so.1.0...(no debugging symbols
> >found)...done.
> >Loaded symbols for /lib/libbz2.so.1.0
> >Reading symbols from
> >/usr/local/lib/dovecot/imap/lib21_fts_squat_plugin.so...done.
> >Loaded symbols for /usr/local/lib/dovecot/imap/lib21_fts_squat_plugin.so
> >Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols
> >found)...done.
> >Loaded symbols for /lib/libgcc_s.so.1
> >Core was generated by `imap [nixxxxx 87.162.56.10]'.
> >Program terminated with signal 6, Aborted.
> >#0 0xb7708424 in __kernel_vsyscall ()
> >#0 0xb7708424 in __kernel_vsyscall ()
> >No symbol table info available.
> >#1 0xb75d08e0 in *__GI_raise (sig=6)
> > at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> > resultvar =<value optimized out>
> > pid = -1217490956
> > selftid = 25023
> >#2 0xb75d3e15 in *__GI_abort () at abort.c:88
> > act = {__sigaction_handler = {sa_handler = 0x9505708,
> > sa_sigaction = 0x9505708}, sa_mask = {__val = {3219827960,
> > 135197034, 3077474016, 0, 3219828080, 3219828068, 128, 0, 0,
> > 3219828144, 3077727856, 134566866, 549, 0, 0, 0, 1, 135270350,
> > 128, 1, 3219828068, 156260072, 69, 3219828196, 3219828040,
> > 135198630, 156260653, 3219828068, 3219828072, 550, 156260104,
> > 3076940867}}, sa_flags = 550,
> > sa_restorer = 0x8106dd9<write_full+57>}
> > sigs = {__val = {32, 0<repeats 31 times>}}
> >#3 0x080f1645 in default_fatal_finish (type=<value optimized out>, status=0)
> > at failures.c:160
> > backtrace = 0x95052d8 "imap [0x80f1631] -> imap [0x80f16a2] ->
> > imap [0x80f1019] -> imap [0x8088fa6] ->
> > imap(maildir_uidlist_refresh+0x9e9) [0x8089fc9] -> imap [0x8086704] ->
> > imap(maildir_storage_sync_init+0x125) [0x8086be5]"...
> >#4 0x080f16a2 in i_internal_fatal_handler (type=LOG_TYPE_PANIC, status=0,
> > fmt=0x8109e2c "file %s: line %d (%s): assertion failed: (%s)",
> > args=0xbfeaae44 ":\355\020\b\223\001") at failures.c:443
> >No locals.
> >#5 0x080f1019 in i_panic (
> > format=0x8109e2c "file %s: line %d (%s): assertion failed: (%s)")
> > at failures.c:207
> >No locals.
> >#6 0x08088fa6 in maildir_uidlist_records_array_delete (uidlist=0x951b0b0,
> > rec=0x9534500) at maildir-uidlist.c:403
> > recs = 0x9536fa0
> > __PRETTY_FUNCTION__ = "maildir_uidlist_records_array_delete"
> >#7 0x08089fc9 in maildir_uidlist_next (uidlist=0x951b0b0)
> > at maildir-uidlist.c:544
> > rec = 0x95346b8
> > uid = 3531
> >#8 maildir_uidlist_update_read (uidlist=0x951b0b0) at maildir-uidlist.c:741
> > storage = 0x950f4b8
> > orig_uid_validity = 1186140978
> > fd = 14
> > orig_next_uid = 3531
> > input = 0x95347a0
> > st = {st_dev = 65024, __pad1 = 0, __st_ino = 5228663, st_mode =
> > 33152,
> > st_nlink = 1, st_uid = 50357, st_gid = 100, st_rdev = 0, __pad2 =
> > 0,
> > st_size = 763, st_blksize = 4096, st_blocks = 8, st_atim = {
> > tv_sec = 1262546767, tv_nsec = 269770575}, st_mtim = {
> > tv_sec = 1262546802, tv_nsec = 221806856}, st_ctim = {
> > tv_sec = 1262546802, tv_nsec = 221806856}, st_ino = 5228663}
> > last_read_offset = 693
> >#9 maildir_uidlist_refresh (uidlist=0x951b0b0) at maildir-uidlist.c:889
> > i = 0
> > retry =<value optimized out>
> > ret =<value optimized out>
> >#10 0x08086704 in have_recent_messages (ctx=0x9505210, forced=false,
> > find_uid=0x0, lost_files_r=0xbfeaaffb) at maildir-sync.c:659
> > hdr =<value optimized out>
> >#11 maildir_sync_get_changes (ctx=0x9505210, forced=false, find_uid=0x0,
> > lost_files_r=0xbfeaaffb) at maildir-sync.c:679
> > flags =<value optimized out>
> >#12 maildir_sync_context (ctx=0x9505210, forced=false, find_uid=0x0,
> > lost_files_r=0xbfeaaffb) at maildir-sync.c:714
> > sync_flags =<value optimized out>
> > flags = 135325664
> > new_changed =<value optimized out>
> > cur_changed =<value optimized out>
> > lock_failure =<value optimized out>
> > fname = 0x9515030 "/home/n/i/nixxxxx/Maildir"
> > ret =<value optimized out>
> > __PRETTY_FUNCTION__ = "maildir_sync_context"
> >#13 0x08086be5 in maildir_storage_sync_init (box=0x9514e98, flags=0)
> > at maildir-sync.c:924
> > _data_stack_cur_id = 4
> > ctx = 0x9505210
> > lost_files =<value optimized out>
> > ret = 0
> > __PRETTY_FUNCTION__ = "maildir_storage_sync_init"
> >#14 0x08070434 in imap_sync_init (client=0x950fba0, box=0x9514e98,
> > imap_flags=0, flags=0) at imap-sync.c:146
> > ctx = 0x95191a0
> > __PRETTY_FUNCTION__ = "imap_sync_init"
> >#15 0x08062aa2 in idle_sync_now (box=<value optimized out>, ctx=0x950feb8)
> > at cmd-idle.c:127
> > __PRETTY_FUNCTION__ = "idle_sync_now"
> >#16 0x080a619c in notify_delay_callback (ibox=0x9514e98)
> > at index-mailbox-check.c:49
> >No locals.
> >#17 0x080f9959 in io_loop_handle_timeouts_real (ioloop=0x950d9b0)
> > at ioloop.c:313
> > item = 0x9563c78
> > tv = {tv_sec = 0, tv_usec = 0}
> > tv_call = {tv_sec = 1262546802, tv_usec = 336801}
> > t_id = 3
> >#18 io_loop_handle_timeouts (ioloop=0x950d9b0) at ioloop.c:324
> > _data_stack_cur_id = 2
> >#19 0x080fa222 in io_loop_handler_run (ioloop=0x950d9b0) at
> >ioloop-epoll.c:180
> > ctx = 0x950dab8
> > event =<value optimized out>
> > list =<value optimized out>
> > io =<value optimized out>
> > tv = {tv_sec = 0, tv_usec = 108829}
> > t_id =<value optimized out>
> > msecs = 109
> > ret = 0
> > i =<value optimized out>
> > j =<value optimized out>
> > call =<value optimized out>
> >#20 0x080f96f0 in io_loop_run (ioloop=0x950d9b0) at ioloop.c:335
> >No locals.
> >#21 0x08070f52 in main (argc=) at main.c:327
> >No locals.
> >$1 = {prev = 0x0, next = 0x0, client = 0x950fba0, pool = 0x950fe18,
> > tag = 0x950fea8 "104.6", name = 0x950feb0 "IDLE", args = 0x0,
> > cmd_flags = 10, func = 0x80628b0<cmd_idle_continue>, context = 0x950feb8,
> > module_contexts = {arr = {buffer = 0x950fe70, element_size = 4},
> > v = 0x950fe70, v_modifiable = 0x950fe70}, parser = 0x9512620,
> > state = CLIENT_COMMAND_STATE_WAIT_INPUT, sync = 0x0, uid = 0, cancel = 0,
> > param_error = 0, search_save_result = 0, temp_executed = 0}
> >(gdb) quit
> >
> >----- End forwarded message -----
> >
>
>
> --
> ================================
> David Halik
> System Administrator
> OIT-CSS Rutgers University
> dha...@jla.rutgers.edu
> ================================
>
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité - Universitätsmedizin Berlin
Campus Benjamin Franklin
Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
ralf.hildebra...@charite.de | http://www.charite.de
