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Overview
| Comment: | Fix a null-pointer dereference that could occur in fts5 with a corrupt database. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
b0a49d5e6df116bb5eacb60a0bb0f482 |
| User & Date: | dan 2018-12-27 07:46:37.854 |
Context
|
2018-12-27
| ||
| 13:52 | Fix the filename normalization in the dbtotxt utility program. (check-in: 29a00a05dd user: drh tags: trunk) | |
| 07:46 | Fix a null-pointer dereference that could occur in fts5 with a corrupt database. (check-in: b0a49d5e6d user: dan tags: trunk) | |
| 02:16 | Fix a problem in which nested CTEs with the same table name trick the code generator into thinking they are the same CTE, which then tries to use the manifest them both into the same transient table. (check-in: 202dd03301 user: drh tags: trunk) | |
Changes
Changes to ext/fts5/fts5_index.c.
| ︙ | ︙ | |||
888 889 890 891 892 893 894 895 896 897 898 |
);
nSegment -= nTotal;
}
if( rc==SQLITE_OK ){
pLvl->nSeg = nTotal;
for(iSeg=0; iSeg<nTotal; iSeg++){
if( i>=nData ){
rc = FTS5_CORRUPT;
break;
}
| > | | | > > > > | 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 |
);
nSegment -= nTotal;
}
if( rc==SQLITE_OK ){
pLvl->nSeg = nTotal;
for(iSeg=0; iSeg<nTotal; iSeg++){
Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg];
if( i>=nData ){
rc = FTS5_CORRUPT;
break;
}
i += fts5GetVarint32(&pData[i], pSeg->iSegid);
i += fts5GetVarint32(&pData[i], pSeg->pgnoFirst);
i += fts5GetVarint32(&pData[i], pSeg->pgnoLast);
if( pSeg->pgnoLast<pSeg->pgnoFirst ){
rc = FTS5_CORRUPT;
break;
}
}
}
}
if( nSegment!=0 && rc==SQLITE_OK ) rc = FTS5_CORRUPT;
if( rc!=SQLITE_OK ){
fts5StructureRelease(pRet);
|
| ︙ | ︙ |
Changes to ext/fts5/test/fts5corrupt3.test.
| ︙ | ︙ | |||
31 32 33 34 35 36 37 |
CREATE VIRTUAL TABLE t1 USING fts5(x);
INSERT INTO t1(t1, rank) VALUES('pgsz', 64);
WITH ii(i) AS (SELECT 1 UNION SELECT i+1 FROM ii WHERE i<100)
INSERT INTO t1 SELECT rnddoc(10) FROM ii;
}
}
| < | 31 32 33 34 35 36 37 38 39 40 41 42 43 44 |
CREATE VIRTUAL TABLE t1 USING fts5(x);
INSERT INTO t1(t1, rank) VALUES('pgsz', 64);
WITH ii(i) AS (SELECT 1 UNION SELECT i+1 FROM ii WHERE i<100)
INSERT INTO t1 SELECT rnddoc(10) FROM ii;
}
}
# Create a simple FTS5 table containing 100 documents. Each document
# contains 10 terms, each of which start with the character "x".
#
do_test 1.0 { create_t1 } {}
do_test 1.1 {
|
| ︙ | ︙ | |||
376 377 378 379 380 381 382 |
db eval {DELETE FROM t5_data WHERE rowid = $i}
set r [catchsql { INSERT INTO t5(t5) VALUES('integrity-check')} ]
if {$r != "1 {database disk image is malformed}"} { error $r }
db eval ROLLBACK
}
} {}
| < < | 375 376 377 378 379 380 381 382 383 384 385 386 387 388 |
db eval {DELETE FROM t5_data WHERE rowid = $i}
set r [catchsql { INSERT INTO t5(t5) VALUES('integrity-check')} ]
if {$r != "1 {database disk image is malformed}"} { error $r }
db eval ROLLBACK
}
} {}
#------------------------------------------------------------------------
# Corruption within the structure record.
#
reset_db
do_execsql_test 8.1 {
CREATE VIRTUAL TABLE t1 USING fts5(x, y);
INSERT INTO t1 VALUES('one', 'two');
|
| ︙ | ︙ | |||
958 959 960 961 962 963 964 965 966 967 968 |
| 64: 70 00 00 00 00 00 00 00 00 00 00 00 70 00 00 00 p...........p...
| end c16.db
}]} {}
do_catchsql_test 15.1 {
INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}
sqlite3_fts5_may_be_corrupt 0
finish_test
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 |
| 64: 70 00 00 00 00 00 00 00 00 00 00 00 70 00 00 00 p...........p...
| end c16.db
}]} {}
do_catchsql_test 15.1 {
INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}
#---------------------------------------------------------------------------
#
reset_db
do_test 16.0 {
sqlite3 db {}
db deserialize [decode_hexdb {
| size 28672 pagesize 4096 filename c17.db
| page 1 offset 0
| 0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00 SQLite format 3.
| 16: 10 00 01 01 00 40 20 20 00 00 00 00 00 00 00 07 .....@ ........
| 32: 00 00 00 00 00 00 00 00 00 00 00 07 00 00 00 00 ................
| 48: 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 ................
| 96: 00 00 00 00 0d 00 00 00 07 0d d2 00 0f c4 0f 6d ...............m
| 112: 0f 02 0e ab 0e 4e 0d f6 0d d2 00 00 00 00 00 00 .....N..........
| 3536: 00 00 22 07 06 17 11 11 01 31 74 61 62 6c 65 74 .........1tablet
| 3552: 32 74 32 07 43 52 45 41 54 45 20 54 41 42 4c 45 2t2.CREATE TABLE
| 3568: 20 74 32 28 78 29 56 06 06 17 1f 1f 01 7d 74 61 t2(x)V.......ta
| 3584: 62 6c 65 74 31 5f 63 6f 6e 66 69 67 74 31 5f 63 blet1_configt1_c
| 3600: 6f 6e 66 69 67 06 43 52 45 41 54 45 20 54 41 42 onfig.CREATE TAB
| 3616: 4c 45 20 27 74 31 5f 63 6f 6e 66 69 67 27 28 6b LE 't1_config'(k
| 3632: 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 76 29 PRIMARY KEY, v)
| 3648: 20 57 49 54 48 4f 55 54 20 52 4f 57 49 44 5b 05 WITHOUT ROWID[.
| 3664: 07 17 21 21 01 81 01 74 61 62 6c 65 74 31 5f 64 ..!!...tablet1_d
| 3680: 6f 63 73 69 7a 65 74 31 5f 64 6f 63 73 69 7a 65 ocsizet1_docsize
| 3696: 05 43 52 45 41 54 45 20 54 41 42 4c 45 20 27 74 .CREATE TABLE 't
| 3712: 31 5f 64 6f 63 73 69 7a 65 27 28 69 64 20 49 4e 1_docsize'(id IN
| 3728: 54 45 47 45 52 20 50 52 49 4d 41 52 59 20 4b 45 TEGER PRIMARY KE
| 3744: 59 2c 20 73 7a 20 42 4c 4f 42 29 55 04 06 17 21 Y, sz BLOB)U...!
| 3760: 21 01 77 74 61 62 6c 65 74 31 5f 63 6f 6e 74 65 !.wtablet1_conte
| 3776: 6e 74 74 31 5f 63 6f 6e 74 65 6e 74 04 43 52 45 ntt1_content.CRE
| 3792: 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 63 6f ATE TABLE 't1_co
| 3808: 6e 74 65 6e 74 27 28 69 64 20 49 4e 54 45 47 45 ntent'(id INTEGE
| 3824: 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 63 R PRIMARY KEY, c
| 3840: 30 29 69 03 07 17 19 19 01 81 2d 74 61 62 6c 65 0)i.......-table
| 3856: 74 31 5f 69 64 78 74 31 5f 69 64 78 03 43 52 45 t1_idxt1_idx.CRE
| 3872: 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 69 64 ATE TABLE 't1_id
| 3888: 78 27 28 73 65 67 69 64 2c 20 74 65 72 6d 2c 20 x'(segid, term,
| 3904: 70 67 6e 6f 2c 20 50 52 49 4d 41 52 59 20 4b 45 pgno, PRIMARY KE
| 3920: 59 28 73 65 67 69 64 2c 20 74 65 72 6d 29 29 20 Y(segid, term))
| 3936: 57 49 54 48 4f 55 54 20 52 4f 57 49 44 55 02 07 WITHOUT ROWIDU..
| 3952: 17 1b 1b 01 81 01 74 61 62 6c 65 74 31 5f 64 61 ......tablet1_da
| 3968: 74 61 74 31 5f 64 61 74 61 02 43 52 45 41 54 45 tat1_data.CREATE
| 3984: 20 54 41 42 4c 45 20 27 74 31 5f 64 61 74 61 27 TABLE 't1_data'
| 4000: 28 69 64 20 49 4e 54 45 47 45 52 20 50 52 49 4d (id INTEGER PRIM
| 4016: 41 52 59 20 4b 45 59 2c 20 62 6c 6f 63 6b 20 42 ARY KEY, block B
| 4032: 4c 4f 42 29 3a 01 06 17 11 11 08 63 74 61 62 6c LOB):......ctabl
| 4048: 65 74 31 74 31 43 52 45 41 54 45 20 56 49 52 54 et1t1CREATE VIRT
| 4064: 55 41 4c 20 54 41 42 4c 45 20 74 31 20 55 53 49 UAL TABLE t1 USI
| 4080: 4e 47 20 66 74 73 35 28 63 6f 6e 74 65 6e 74 29 NG fts5(content)
| page 2 offset 4096
| 0: 0d 00 00 00 03 0f bd 00 0f e8 0f ef 0f bd 00 00 ................
| 4016: 00 00 00 00 00 00 00 00 00 00 00 00 00 24 84 80 .............$..
| 4032: 80 80 80 01 03 00 4e 00 00 00 1e 06 30 61 62 61 ......N.....0aba
| 4048: 63 6b 01 02 02 04 02 66 74 00 02 22 04 04 6e 64 ck.....ft.....nd
| 4064: 6f 6e 03 02 02 04 0a 07 05 01 03 00 10 03 03 0f on..............
| 4080: 0a 03 00 24 00 00 00 00 01 01 01 00 01 01 41 01 ...$..........A.
| page 3 offset 8192
| 0: 0a 00 00 00 01 0f fa 00 0f fa 00 00 00 00 00 00 ................
| 4080: 00 00 00 00 00 00 00 00 00 00 05 04 09 0c 01 02 ................
| page 4 offset 12288
| 0: 0d 00 00 00 03 0f e0 00 0f f6 0f ec 0f e0 00 00 ................
| 4064: 0a 03 03 00 1b 61 62 61 6e 64 6f 6e 08 02 03 00 .....abandon....
| 4080: 17 61 62 61 66 74 08 01 03 00 17 61 62 61 63 6b .abaft.....aback
| page 5 offset 16384
| 0: 0d 00 00 00 03 0f ee 00 0f fa 0f f4 0f ee 00 00 ................
| 4064: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 03 ................
| 4080: 03 00 0e 01 04 02 03 00 0e 01 04 01 03 00 0e 01 ................
| page 6 offset 20480
| 0: 0a 00 00 00 01 0f f4 00 0f f4 00 00 00 00 00 00 ................
| 4080: 00 00 00 00 0b 03 1b 01 76 65 72 73 69 6f 6e 04 ........version.
| page 7 offset 24576
| 0: 0d 00 00 00 03 0f d6 00 0f f4 0f e1 0f d6 00 00 ................
| 4048: 00 00 00 00 00 00 09 03 02 1b 72 65 62 75 69 6c ..........rebuil
| 4064: 64 11 02 02 2b 69 6e 74 65 67 72 69 74 79 2d 63 d...+integrity-c
| 4080: 68 65 63 6b 0a 01 02 1d 6f 70 74 69 6d 69 7a 65 heck....optimize
| end c17.db
}]} {}
do_catchsql_test 16.1 {
INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {vtable constructor failed: t1}}
sqlite3_fts5_may_be_corrupt 0
finish_test
|