Comments (12)
slusarz
commented on June 15, 2024
I can't reproduce, and I don't have any *BSD testing setup. But examining dotlock init code, there were several dotlock timeout variables that were being assigned to non-existent constants. So possibly this is related to that.
Can you try compiling with latest code and see if that fixes things? Specifcally commit 14971c9.
Edit: err, I am blind because those constants were defined. So that wouldn't be why this is broken. However, it's worth a shot to see if the commit helps anyway, since it does change dotlock init.
Otherwise, it's possible that dotlock is broken on *BSD.
from dovecot-fts-flatcurve.
sthen
commented on June 15, 2024
Similar crashes:
2021-12-12T12:52:31.178Z symphytum dovecot: indexer-worker(sthen)<27729><ZLo7Bo/wtWHajwAA89wJGQ:jEVNCo/wtWFRbAAA89wJGQ>: Debug: fts-flatcurve: Xapian library version: 1.4.18
2021-12-12T12:52:31.178Z symphytum dovecot: indexer-worker(sthen)<27729><ZLo7Bo/wtWHajwAA89wJGQ:jEVNCo/wtWFRbAAA89wJGQ>: Panic: file file-dotlock.c: line 570 (dotlock_create): assertion failed: (lock_info.fd != -1)
2021-12-12T12:52:31.240Z symphytum dovecot: indexer-worker(sthen)<27729><ZLo7Bo/wtWHajwAA89wJGQ:jEVNCo/wtWFRbAAA89wJGQ>: Fatal: master: service(indexer-worker): child 27729 killed with signal 6 (core dumped)
2021-12-12T12:52:31.262Z symphytum dovecot: indexer-worker(sthen)<35110><ZLo7Bo/wtWHajwAA89wJGQ:bWdkD4/wtWEmiQAA89wJGQ>: Debug: fts-flatcurve: Xapian library version: 1.4.18
2021-12-12T12:52:31.262Z symphytum dovecot: indexer-worker(sthen)<35110><ZLo7Bo/wtWHajwAA89wJGQ:bWdkD4/wtWEmiQAA89wJGQ>: Panic: file file-dotlock.c: line 570 (dotlock_create): assertion failed: (lock_info.fd != -1)
2021-12-12T12:52:31.298Z symphytum dovecot: indexer-worker(sthen)<35110><ZLo7Bo/wtWHajwAA89wJGQ:bWdkD4/wtWEmiQAA89wJGQ>: Fatal: master: service(indexer-worker): child 35110 killed with signal 6 (core dumped)
#0 thrkill () at /tmp/-:3
#1 0x000005f9ea7cd3de in _libc_abort () at /usr/src/lib/libc/stdlib/abort.c:51
#2 0x000005fa18042c86 in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at failures.c:459
#3 0x000005fa180410a4 in fatal_handler_real (ctx=0x7f7ffffda860, format=<optimized out>, args=<optimized out>)
at failures.c:471
#4 0x000005fa18042041 in i_internal_fatal_handler (ctx=0x0,
format=0x6 <error: Cannot access memory at address 0x6>, args=0x0) at failures.c:872
#5 0x000005fa180412e2 in i_panic (format=0x6 <error: Cannot access memory at address 0x6>) at failures.c:524
#6 0x000005fa180461f0 in dotlock_create (dotlock=<optimized out>,
flags=(DOTLOCK_CREATE_FLAG_NONBLOCK | DOTLOCK_CREATE_FLAG_CHECKONLY | unknown: 32636),
write_pid=<optimized out>, lock_path_r=<optimized out>) at file-dotlock.c:570
#7 0x000005fa18045011 in file_dotlock_create_real (dotlock=0x5fa42b48580,
flags=(DOTLOCK_CREATE_FLAG_NONBLOCK | DOTLOCK_CREATE_FLAG_CHECKONLY | unknown: 32636)) at file-dotlock.c:635
#8 file_dotlock_create (set=0x7f7ffffdab68,
path=0x5fa42b22060 "/home/sthen/mdbox/mailboxes/INBOX/dbox-Mails/fts-flatcurve/flatcurve-dotlock",
flags=(DOTLOCK_CREATE_FLAG_NONBLOCK | DOTLOCK_CREATE_FLAG_CHECKONLY | unknown: 32636), dotlock_r=0x5fa42b3f288)
at file-dotlock.c:679
#9 0x000005fa6161d455 in fts_flatcurve_xapian_lock (backend=0x5fa42b54500)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:527
#10 0x000005fa6161f996 in fts_flatcurve_xapian_db_populate (backend=0x5fa42b54500,
opts=(FLATCURVE_XAPIAN_DB_NOCREATE_CURRENT | FLATCURVE_XAPIAN_DB_IGNORE_EMPTY))
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:620
#11 0x000005fa6161aa80 in fts_flatcurve_xapian_read_db (backend=0x5fa42b54500,
opts=(FLATCURVE_XAPIAN_DB_NOCREATE_CURRENT | FLATCURVE_XAPIAN_DB_IGNORE_EMPTY))
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:688
#12 0x000005fa6161bb70 in fts_flatcurve_xapian_get_last_uid (backend=0x5fa42b54500, last_uid_r=0x7f7ffffdae6c)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:1129
#13 0x000005fa61617ff3 in fts_backend_flatcurve_get_last_uid (_backend=0x5fa42b54500, box=0x5fa42b56448,
last_uid_r=0x7f7ffffdae6c)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve.c:151
#14 0x000005fa357efdc4 in fts_backend_get_last_uid (backend=0x0, box=0x6, last_uid_r=0x7f7ffffdae6c) at fts-api.c:106
#15 0x000005fa357fa322 in fts_mailbox_get_last_cached_seq (box=0x5fa42b56448, seq_r=0x7f7ffffdaea4)
at fts-storage.c:84
#16 0x000005fa357f80f6 in fts_mailbox_get_status (box=0x5fa42b56448,
--Type <RET> for more, q to quit, c to continue without paging--
items=(STATUS_MESSAGES | STATUS_LAST_CACHED_SEQ), status_r=0x7f7ffffdb060) at fts-storage.c:109
#17 0x000005f9df3b66c7 in mailbox_get_status (box=0x5fa42b56448, items=(STATUS_MESSAGES | STATUS_LAST_CACHED_SEQ),
status_r=0x7f7ffffdb060) at mail-storage.c:2169
#18 0x000005f7a69dde1e in index_mailbox_precache (conn=0x5fa42b37a00, box=0x5fa42b56448) at master-connection.c:92
#19 index_mailbox (conn=0x5fa42b37a00, user=<optimized out>, mailbox=<optimized out>,
max_recent_msgs=<optimized out>, what=<optimized out>) at master-connection.c:239
#20 master_connection_input_args (_conn=0x5fa42b37a00, args=<optimized out>) at master-connection.c:283
#21 0x000005fa18035ff2 in connection_input_default (conn=0x5fa42b37a00) at connection.c:95
#22 0x000005fa1805e6c1 in io_loop_call_io (io=0x5fa42b2a300) at ioloop.c:737
#23 0x000005fa180617fe in io_loop_handler_run_internal (ioloop=0x5fa42b5c600) at ioloop-kqueue.c:164
#24 0x000005fa1805ed31 in io_loop_handler_run (ioloop=0x5fa42b5c600) at ioloop.c:789
#25 0x000005fa1805eb38 in io_loop_run (ioloop=0x5fa42b5c600) at ioloop.c:762
#26 0x000005fa17fb5a95 in master_service_run (service=0x5fa42b37e00, callback=0x6) at master-service.c:863
#27 0x000005f7a69dd828 in main (argc=1, argv=0x7f7ffffdb458) at indexer-worker.c:76
Program terminated with signal SIGSEGV, Segmentation fault.
#0 fts_flatcurve_xapian_write_db_get (backend=0x823d6251100, xdb=0x0, wopts=FLATCURVE_XAPIAN_WDB_CREATE)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:366
366 if (xdb->dbw != NULL)
(gdb) bt
#0 fts_flatcurve_xapian_write_db_get (backend=0x823d6251100, xdb=0x0, wopts=FLATCURVE_XAPIAN_WDB_CREATE)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:366
#1 0x0000082437116785 in fts_flatcurve_xapian_write_db_current (backend=0x823d6251100,
opts=<error reading variable: Cannot access memory at address 0x7>)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:660
#2 fts_flatcurve_xapian_init_msg (ctx=0x823d627f2c8)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve-xapian.cpp:1197
#3 0x000008243711348d in fts_backend_flatcurve_update_set_build_key (_ctx=0x823d627f2c8, key=0x7f7ffffcb9c0)
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb2571f/src/fts-backend-flatcurve.c:254
#4 0x00000824426e7171 in fts_backend_update_set_build_key (ctx=0x823d627f2c8, key=0x7f7ffffcb9c0) at fts-api.c:178
#5 0x00000824426e842a in fts_build_mail_header (ctx=<optimized out>, block=<optimized out>) at fts-build-mail.c:160
#6 fts_build_mail_real (update_ctx=0x823d627f2c8, mail=<optimized out>, retriable_err_msg_r=<optimized out>,
may_need_retry_r=<optimized out>) at fts-build-mail.c:576
#7 fts_build_mail (update_ctx=0x823d627f2c8, mail=<optimized out>) at fts-build-mail.c:625
--Type <RET> for more, q to quit, c to continue without paging--
#8 0x00000824426eed23 in fts_mail_index (_mail=0x823d625a048) at fts-storage.c:540
#9 fts_mail_precache (_mail=0x823d625a048) at fts-storage.c:561
#10 0x00000823e18b5cb5 in mail_precache (mail=0x823d625a048) at mail.c:463
#11 0x0000082146906205 in index_mailbox_precache (conn=0x823d6270a00, box=<optimized out>) at master-connection.c:119
#12 index_mailbox (conn=0x823d6270a00, user=<optimized out>, mailbox=<optimized out>,
max_recent_msgs=<optimized out>, what=<optimized out>) at master-connection.c:239
#13 master_connection_input_args (_conn=0x823d6270a00, args=<optimized out>) at master-connection.c:283
#14 0x000008237ee78ff2 in connection_input_default (conn=0x823d6270a00) at connection.c:95
#15 0x000008237eea16c1 in io_loop_call_io (io=0x823d624e300) at ioloop.c:737
#16 0x000008237eea47fe in io_loop_handler_run_internal (ioloop=0x823d6267300) at ioloop-kqueue.c:164
#17 0x000008237eea1d31 in io_loop_handler_run (ioloop=0x823d6267300) at ioloop.c:789
#18 0x000008237eea1b38 in io_loop_run (ioloop=0x823d6267300) at ioloop.c:762
#19 0x000008237edf8a95 in master_service_run (service=0x823d626fa00, callback=0x0) at master-service.c:863
#20 0x0000082146905828 in main (argc=1, argv=0x7f7ffffcc048) at indexer-worker.c:76
from dovecot-fts-flatcurve.
sthen
commented on June 15, 2024
One possible change (though I'm not 100% sure), I don't seem able to trigger the dotlock crash after expunging any more
from dovecot-fts-flatcurve.
slusarz
commented on June 15, 2024
I'm going to see i I can setup a local container with openbsd and run the test suite and see if I can get the assertion.
from dovecot-fts-flatcurve.
slusarz
commented on June 15, 2024
Unfortunately, it is just too much work to get testing up and running on non-Linux at this time.
If you could run the test suite (https://github.com/slusarz/dovecot-fts-flatcurve/blob/master/.github/actions/dovecot-fts-flatcurve-test/fts-flatcurve-test.sh) locally, that would be useful. Or, better still, tracing why the assert is being called (i.e. why is lock_info.fd != -1).
from dovecot-fts-flatcurve.
sthen
commented on June 15, 2024
On 2021/12/22 23:14, Michael M Slusarz wrote:
Unfortunately, it is just too much work to get testing up and running on non-Linux at this
time.
If you could run the test suite (https://github.com/slusarz/dovecot-fts-flatcurve/blob/master
/.github/actions/dovecot-fts-flatcurve-test/fts-flatcurve-test.sh) locally, that would be
useful. Or, better still, tracing why the assert is being called (i.e. why is lock_info.fd !=
-1).
—
Reply to this email directly, view it on GitHub, or unsubscribe.
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You are receiving this because you authored the thread.*Message ID: <slusarz/
***@***.***>
Unless I'm mistaken, fts_flatcurve_xapian_lock() calls
file_dotlock_create() with flags undefined, so I think in some cases
flags & DOTLOCK_CREATE_FLAG_CHECKONLY is set, so the lockfile isn't
created and fd remains at -1 from init.
from dovecot-fts-flatcurve.
slusarz
commented on June 15, 2024
Declaring an enum should initialize it to zero. But maybe you can explicit set the enum to zero and see if that fixes things?
Change to:
enum dotlock_create_flags flags = 0;
from dovecot-fts-flatcurve.
sthen
commented on June 15, 2024
On 2021/12/29 21:05, Michael M Slusarz wrote:
Declaring an enum should initialize it to zero. But maybe you can explicit set the enum to zero
and see if that fixes things?
https://github.com/slusarz/dovecot-fts-flatcurve/blob/master/src/
fts-backend-flatcurve-xapian.cpp#L507
Change to:
enum dotlock_create_flags flags = 0;
I should have said that I tried this but the compiler (clang from LLVM
13) doesn't actually allow it,
fts-backend-flatcurve-xapian.cpp:507:28: error: cannot initialize a variable of type 'enum dotlock_create_flags' with an rvalue of type 'int'
enum dotlock_create_flags flags = 0; ^ ~
My C knowledge is not great but I wondered if this was because no
enum value in dotlock_create_flags was defined as 0.
I discovered it with logs added to the dotlock_creare(); flags &
DOTLOCK_CREATE_FLAG_CHECKONLY was non-zero when called from flatcurve.
from dovecot-fts-flatcurve.
slusarz
commented on June 15, 2024
Ugh, sorry, forgot that C++ isn't smart enough to cast enums itself that aren't explicitly defined.
You should change that line to:
enum dotlock_create_flags flags = (enum dotlock_create_flags) 0;
from dovecot-fts-flatcurve.
sthen
commented on June 15, 2024
Sorry for the slow reply. With that changed I'm not seeing dotlock
"assertion failed: (lock_info.fd != -1)" panics in backtraces any more and
I think the crashes are probably less frequent, but indexer-worker still
hits NULL derefs in fts_flatcurve_xapian_write_db_get(). With an -O0 build
we get values of opts showing in the backtrace:
```
#0 0x000007b085afa487 in fts_flatcurve_xapian_write_db_get (backend=0x7b06d2f2900, xdb=0x0, wopts=(unknown:[231/1928]
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb
2571f/src/fts-backend-flatcurve-xapian.cpp:366
#1 0x000007b085af4aaf in fts_flatcurve_xapian_write_db_current (backend=0x7b06d2f2900,
opts=(FLATCURVE_XAPIAN_DB_NOCREATE_CURRENT | FLATCURVE_XAPIAN_DB_IGNORE_EMPTY | FLATCURVE_XAPIAN_DB_NOCLOSE_CURREN
T | unknown: 32632))
at /usr/obj/ports/dovecot-fts-flatcurve-0.1.1pre20211212/dovecot-fts-flatcurve-55883dd3b606272f1954e99a90ff34c17eb
2571f/src/fts-backend-flatcurve-xapian.cpp:660
[...snip...]
```
Which makes me wonder if the same issue is affecting other uninited enums.
Rather than look at them one by one I just went for initing them all (diff
below). I haven't hit any NULL derefs yet since changing this, and one
situation which hit them every time I tried (rm the fts-flatcurve dir
in some mailbox and attempt a body search over imap) now works.
```
Index: src/fts-backend-flatcurve-xapian.cpp
--- src/fts-backend-flatcurve-xapian.cpp.orig
+++ src/fts-backend-flatcurve-xapian.cpp
@@ -504,7 +504,7 @@ fts_flatcurve_xapian_db_add(struct flatcurve_fts_backe
static int fts_flatcurve_xapian_lock(struct flatcurve_fts_backend *backend)
{
- enum dotlock_create_flags flags;
+ enum dotlock_create_flags flags = (enum dotlock_create_flags) 0;
int ret;
struct dotlock_settings set;
struct flatcurve_xapian *x = backend->xapian;
@@ -645,7 +645,7 @@ static struct flatcurve_xapian_db *
fts_flatcurve_xapian_write_db_current(struct flatcurve_fts_backend *backend,
enum flatcurve_xapian_db_opts opts)
{
- enum flatcurve_xapian_wdb wopts;
+ enum flatcurve_xapian_wdb wopts = (enum flatcurve_xapian_wdb) 0;
struct flatcurve_xapian *x = backend->xapian;
struct flatcurve_xapian_db *xdb;
@@ -860,7 +860,7 @@ fts_flatcurve_xapian_check_db_version(struct flatcurve
std::ostringstream ss;
int v;
std::string ver;
- enum flatcurve_xapian_wdb wopts;
+ enum flatcurve_xapian_wdb wopts = (enum flatcurve_xapian_wdb) 0;
ver = db->get_metadata(FLATCURVE_XAPIAN_DB_VERSION_KEY);
v = ver.empty() ? 0 : std::atoi(ver.c_str());
@@ -917,8 +917,8 @@ static struct flatcurve_xapian_db *
fts_flatcurve_xapian_write_db_by_uid(struct flatcurve_fts_backend *backend,
uint32_t uid)
{
- enum flatcurve_xapian_db_opts opts;
- enum flatcurve_xapian_wdb wopts;
+ enum flatcurve_xapian_db_opts opts = (enum flatcurve_xapian_db_opts) 0;
+ enum flatcurve_xapian_wdb wopts = (enum flatcurve_xapian_wdb) 0;
struct flatcurve_xapian_db *xdb;
(void)fts_flatcurve_xapian_read_db(backend, opts);
@@ -957,7 +957,7 @@ static void
fts_flatcurve_xapian_clear_document(struct flatcurve_fts_backend *backend)
{
struct flatcurve_xapian *x = backend->xapian;
- enum flatcurve_xapian_db_opts opts;
+ enum flatcurve_xapian_db_opts opts = (enum flatcurve_xapian_db_opts) 0;
struct flatcurve_xapian_db *xdb;
if ((x->doc == NULL) ||
@@ -1184,7 +1184,7 @@ void fts_flatcurve_xapian_expunge(struct flatcurve_fts
bool
fts_flatcurve_xapian_init_msg(struct flatcurve_fts_backend_update_context *ctx)
{
- enum flatcurve_xapian_db_opts opts;
+ enum flatcurve_xapian_db_opts opts = (enum flatcurve_xapian_db_opts) 0;
struct flatcurve_xapian *x = ctx->backend->xapian;
struct flatcurve_xapian_db *xdb;
@@ -1342,9 +1342,9 @@ fts_flatcurve_xapian_optimize_box_do(struct flatcurve_
void *key, *val;
struct flatcurve_xapian_db_path *n, *o;
struct timeval now, start;
- enum flatcurve_xapian_db_opts opts;
+ enum flatcurve_xapian_db_opts opts = (enum flatcurve_xapian_db_opts) 0;
struct flatcurve_xapian *x = backend->xapian;
- enum flatcurve_xapian_wdb wopts;
+ enum flatcurve_xapian_wdb wopts = (enum flatcurve_xapian_wdb) 0;
/* We need to lock all of the mailboxes so nothing changes while we
* are optimizing. */
@@ -1462,7 +1462,7 @@ fts_flatcurve_build_query_arg(struct flatcurve_fts_que
struct flatcurve_fts_query_arg *a;
Xapian::Database *db;
string_t *hdr, *hdr2;
- enum flatcurve_xapian_db_opts opts;
+ enum flatcurve_xapian_db_opts opts = (enum flatcurve_xapian_db_opts) 0;
std::string t;
struct flatcurve_fts_query_xapian *x = query->xapian;
@@ -1690,7 +1690,7 @@ struct fts_flatcurve_xapian_query_result *
fts_flatcurve_xapian_query_iter_next(struct fts_flatcurve_xapian_query_iter *iter)
{
Xapian::MSet m;
- enum flatcurve_xapian_db_opts opts;
+ enum flatcurve_xapian_db_opts opts = (enum flatcurve_xapian_db_opts) 0;
if (iter->enquire == NULL) {
if ((iter->query->xapian->query == NULL) ||
```
from dovecot-fts-flatcurve.
slusarz
commented on June 15, 2024
Thanks for your efforts in this! I added e3af260, which is a cleaned-up version of your patch. All tests are passing, so if you could verify that it works for you I think we will be able to close this ticket as resolved.
from dovecot-fts-flatcurve.
sthen
commented on June 15, 2024
Yes, that's looking good, thanks for your help Michael.
from dovecot-fts-flatcurve.
Related Issues (20)
- Build failing HOT 1
- Searching for phrases with IMAP SEARCH vs. doveadm search, v0.2.0 vs. v0.3.0 HOT 3
- Feature Request: Change Flatcurve Index Location via config parameter HOT 1
- Separate directory for indexing? HOT 7
- Search by some email addresses is not working HOT 3
- Virtual search doesn't consider unindexed messages HOT 2
- backtrace during indexing HOT 2
- Inconsistent results when searching in attachment HOT 4
- Filename too long errors during FTS optimize HOT 5
- Panic when running a search HOT 2
- Inaccurate results while searching for a phrase in subject HOT 2
- Excessively long string sent to xapian to index HOT 1
- Using fts-flatcure with Dovecot 2.3.13 / Debian Bookworm HOT 2
- Example config anywhere? HOT 2
- Error: fts: Failed to initialize backend 'flatcurve': Unknown backend HOT 2
- imap segfault with fts flatcurve HOT 11
- remove use of .la files HOT 7
- fts_filter_normalizer_icu: libicu support not built in HOT 6
- Assertion crash for search in virtual mailbox
- Segfault with Dovecot 1:2.3.21+dfsg1-2 from Debian HOT 17
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D3
Data-Driven Documents codes.
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Tencent
China tencent open source team.
from dovecot-fts-flatcurve.