Hello,
We have recently been seeing processes dropping into ldb under 19c with GC
lossage errors (example errors with backtraces at the end of this post). I
haven't yet tested under 19d pre-release because I don't yet have any way of
reliably triggering this behavior; I've seen this only on production servers.
I did see this in the 19d (pre-)release notes:
- Some issues with GC of weak pointers and weak hash-tables have
been fixed. (CMUCL would sometimes crash to ldb about weird,
invalid objects.) There are, however, still issues with weak
pointers.
Is it this issue to which the notes are referring?
Thanks,
--Eli
Example 1:
*A2 gc_alloc_large failed, nbytes=272.
CMUCL has run out of dynamic heap space (512 MB).
You can control heap size with the -dynamic-space-size commandline option.
NOT BOXED: 5ff96000 660f6000 77efd000
GC lossage. No scavenge function for object 0x00000006
LDB monitor
ldb> ba
Backtrace:
0: Foreign fp = 0x3fff6324, ra = 0x804dcfd
1: Foreign fp = 0x3fff6464, ra = 0x804df71
2: Foreign fp = 0x3fff6524, ra = 0x804dfc8
3: Foreign fp = 0x3fff6534, ra = 0x804f15e
4: Foreign fp = 0x3fff6554, ra = 0x8059794
5: Foreign fp = 0x3fff6584, ra = 0x8057d37
6: Foreign fp = 0x3fff65b4, ra = 0x805af46
7: Foreign fp = 0x3fff65e4, ra = 0x805c615
8: Foreign fp = 0x3fff6624, ra = 0x805ca5d
9: LISP::COLLECT-GARBAGE
10: (COMMON-LISP::FLET G5 LISP::SUB-GC)
11: LISP::SUB-GC
12: LISP::MAYBE-GC
13: (COMMON-LISP::FLET G0 COMMON-LISP::GETHASH)
14: COMMON-LISP::GETHASH
15: WCOF::GET-SERVICE
16: (COMMON-LISP::METHOD IMHO::ASLEEP () (WCO::WEBCHECKOUT-SESSION))
17: (COMMON-LISP::FLET G34)
18: (COMMON-LISP::METHOD IMHO::GENERATE-RESPONSE () (IMHO::APPLICATION
COMMON-LISP::T))
19: (COMMON-LISP::METHOD IMHO::GENERATE-RESPONSE (KEYWORD::AROUND)
(WCO::WEBCHECKOUT COMMON-LISP::T))
20: IMHO::HANDLE-REQUEST
21: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST-RESPONSE ()
(WCO-ARANEIDA::WCO-HANDLER COMMON-LISP::T COMM
ON-LISP::T))
22: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST () (ARANEIDA::HANDLER
COMMON-LISP::T))
23: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST () (ARANEIDA::HANDLER
COMMON-LISP::T))
24: (COMMON-LISP::LABELS ARANEIDA::DO-IT
ARANEIDA::SERVE-EVENT-HTTP-LISTENER-ACCEPT-ONE-REQUEST)
25: ARANEIDA::SERVE-EVENT-HTTP-LISTENER-ACCEPT-ONE-REQUEST
26: LISP::SUB-SERVE-EVENT
27: SYSTEM::WAIT-UNTIL-FD-USABLE
28: LISP::DO-INPUT
29: LISP::INPUT-CHARACTER
30: LISP::SYNONYM-IN
31: LISP::TWO-WAY-IN
32: COMMON-LISP::READ-CHAR
33: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
34: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
35: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
36: LISP::READ-INTERNAL
37: COMMON-LISP::READ
38: LISP::%TOP-LEVEL
39: WCO::%INIT
40: EXTENSIONS::EVAL-SWITCH-DEMON
41: EXTENSIONS::INVOKE-SWITCH-DEMONS
42: (COMMON-LISP::LABELS LISP::%RESTART-LISP EXTENSIONS::SAVE-LISP)
43: (COMMON-LISP::LABELS LISP::RESTART-LISP EXTENSIONS::SAVE-LISP)
Example 2:
*A2 gc_alloc_large failed, nbytes=272.
CMUCL has run out of dynamic heap space (512 MB).
You can control heap size with the -dynamic-space-size commandline option.
NOT BOXED: 64db3000 7772c000 77efd000
GC lossage. No scavenge function for object 0x00000002
LDB monitor
ldb> ()
unknown command: ``()''
ldb> ba
Backtrace:
0: Foreign fp = 0x3fff605c, ra = 0x804dcfd
1: Foreign fp = 0x3fff619c, ra = 0x804df71
2: Foreign fp = 0x3fff625c, ra = 0x804dfc8
3: Foreign fp = 0x3fff626c, ra = 0x804f15e
4: Foreign fp = 0x3fff628c, ra = 0x8059794
5: Foreign fp = 0x3fff62bc, ra = 0x8057d37
6: Foreign fp = 0x3fff62ec, ra = 0x805af46
7: Foreign fp = 0x3fff631c, ra = 0x805c615
8: Foreign fp = 0x3fff635c, ra = 0x805ca5d
9: LISP::COLLECT-GARBAGE
10: (COMMON-LISP::FLET G5 LISP::SUB-GC)
11: LISP::SUB-GC
12: LISP::MAYBE-GC
13: (COMMON-LISP::FLET G0 COMMON-LISP::GETHASH)
14: COMMON-LISP::GETHASH
15: ALIEN::ALIEN-TYPE-CLASS-OR-LOSE
16: ALIEN::COMPUTE-LISP-REP-TYPE
17: ALIEN::ALIEN-TYPEP
18: (COMMON-LISP::METHOD CLSQL-SYS::DATABASE-EXECUTE-COMMAND ()
(COMMON-LISP::T CLSQL-POSTGRESQL::POSTGRESQL
-DATABASE))
19: (COMMON-LISP::METHOD CLSQL-SYS::EXECUTE-COMMAND () (COMMON-LISP::STRING))
20: (COMMON-LISP::METHOD CLSQL-SYS::DATABASE-ABORT-TRANSACTION ()
(CLSQL-SYS::DATABASE))
21: (COMMON-LISP::FLET G21)
22: (COMMON-LISP::METHOD WCOF::PERFORM (KEYWORD::AROUND)
(WCOF::FRAMEWORK-COMMAND))
23: (COMMON-LISP::METHOD IMHO::AWAKE (KEYWORD::BEFORE)
(WCO::CIRCULATION-FORM))
24: "LAMBDA (G7186 G7187 G7188)"
25: (COMMON-LISP::METHOD IMHO::GENERATE-RESPONSE () (IMHO::APPLICATION
COMMON-LISP::T))
26: (COMMON-LISP::METHOD IMHO::GENERATE-RESPONSE (KEYWORD::AROUND)
(WCO::WEBCHECKOUT COMMON-LISP::T))
27: IMHO::HANDLE-REQUEST
28: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST-RESPONSE ()
(WCO-ARANEIDA::WCO-HANDLER COMMON-LISP::T COMM
ON-LISP::T))
29: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST () (ARANEIDA::HANDLER
COMMON-LISP::T))
30: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST () (ARANEIDA::HANDLER
COMMON-LISP::T))
31: (COMMON-LISP::LABELS ARANEIDA::DO-IT
ARANEIDA::SERVE-EVENT-HTTP-LISTENER-ACCEPT-ONE-REQUEST)
32: ARANEIDA::SERVE-EVENT-HTTP-LISTENER-ACCEPT-ONE-REQUEST
33: LISP::SUB-SERVE-EVENT
34: SYSTEM::WAIT-UNTIL-FD-USABLE
35: LISP::DO-INPUT
36: LISP::INPUT-CHARACTER
37: LISP::SYNONYM-IN
38: LISP::TWO-WAY-IN
39: LISP::SYNONYM-IN
40: COMMON-LISP::READ-CHAR
41: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
42: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
43: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
44: LISP::READ-INTERNAL
45: COMMON-LISP::READ
46: LISP::%TOP-LEVEL
47: WCO::START
48: EXTENSIONS::EVAL-SWITCH-DEMON
49: EXTENSIONS::INVOKE-SWITCH-DEMONS
50: (COMMON-LISP::LABELS LISP::%RESTART-LISP EXTENSIONS::SAVE-LISP)
51: (COMMON-LISP::LABELS LISP::RESTART-LISP EXTENSIONS::SAVE-LISP)
Example 3:
*A2 gc_alloc_new_region failed, nbytes=8.
CMUCL has run out of dynamic heap space (512 MB).
You can control heap size with the -dynamic-space-size commandline option.
GC lossage. No scavenge function for object 0x3c058bca
LDB monitor
ldb> ba
Backtrace:
0: Foreign fp = 0x3fff62ec, ra = 0x804dcfd
1: Foreign fp = 0x3fff642c, ra = 0x804df71
2: Foreign fp = 0x3fff64ec, ra = 0x804dfc8
3: Foreign fp = 0x3fff64fc, ra = 0x804f15e
4: Foreign fp = 0x3fff651c, ra = 0x8059794
5: Foreign fp = 0x3fff654c, ra = 0x8057d37
6: Foreign fp = 0x3fff657c, ra = 0x805af46
7: Foreign fp = 0x3fff65ac, ra = 0x805c615
8: Foreign fp = 0x3fff65ec, ra = 0x805ca5d
9: LISP::COLLECT-GARBAGE
10: (COMMON-LISP::FLET G5 LISP::SUB-GC)
11: LISP::SUB-GC
12: LISP::MAYBE-GC
13: (COMMON-LISP::FLET G0 COMMON-LISP::GETHASH)
14: COMMON-LISP::GETHASH
15: WCOF::GET-SERVICE
16: (COMMON-LISP::METHOD IMHO::ASLEEP () (WCO::WEBCHECKOUT-SESSION))
17: (COMMON-LISP::FLET G34)
18: (COMMON-LISP::METHOD IMHO::GENERATE-RESPONSE () (IMHO::APPLICATION
COMMON-LISP::T))
19: (COMMON-LISP::METHOD IMHO::GENERATE-RESPONSE (KEYWORD::AROUND)
(WCO::WEBCHECKOUT COMMON-LISP::T))
20: IMHO::HANDLE-REQUEST
21: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST-RESPONSE ()
(WCO-ARANEIDA::WCO-HANDLER COMMON-LISP::T COMM
ON-LISP::T))
22: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST () (ARANEIDA::HANDLER
COMMON-LISP::T))
23: (COMMON-LISP::METHOD ARANEIDA::HANDLE-REQUEST () (ARANEIDA::HANDLER
COMMON-LISP::T))
24: (COMMON-LISP::LABELS ARANEIDA::DO-IT
ARANEIDA::SERVE-EVENT-HTTP-LISTENER-ACCEPT-ONE-REQUEST)
25: ARANEIDA::SERVE-EVENT-HTTP-LISTENER-ACCEPT-ONE-REQUEST
26: LISP::SUB-SERVE-EVENT
27: SYSTEM::WAIT-UNTIL-FD-USABLE
28: LISP::DO-INPUT
29: LISP::INPUT-CHARACTER
30: LISP::SYNONYM-IN
31: LISP::TWO-WAY-IN
32: COMMON-LISP::READ-CHAR
33: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
34: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
35: LISP::READ-PRESERVING-WHITESPACE-INTERNAL
36: LISP::READ-INTERNAL
37: COMMON-LISP::READ
38: LISP::%TOP-LEVEL
39: WCO::%INIT
40: EXTENSIONS::EVAL-SWITCH-DEMON
41: EXTENSIONS::INVOKE-SWITCH-DEMONS
42: (COMMON-LISP::LABELS LISP::%RESTART-LISP EXTENSIONS::SAVE-LISP)
43: (COMMON-LISP::LABELS LISP::RESTART-LISP EXTENSIONS::SAVE-LISP)
