Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/e3140a8f27345d395ea75fe619d730951a438e89 (Run SQLite DBFuzz2 on ClusterFuzz to fuzz for data corruption).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

Richard and Daniel, could you please take a look?

dbfuzz2 test case attached. Stack trace below.

sqlite3_dbfuzz2_fuzzer: ../../third_party/sqlite/amalgamation/sqlite3.c:70087: int balance_quick(MemPage *, MemPage *, u8 *): Assertion `0' failed.
AddressSanitizer:DEADLYSIGNAL
=================================================================
==1057666==ERROR: AddressSanitizer: ABRT on unknown address 0x053900102382 (pc 0x7f1b22c40428 bp 0x7f1b240d8840 sp 0x7fff1d5b42a8 T0)
SCARINESS: 10 (signal)
    #0 0x7f1b22c40427 in gsignal /build/glibc-Cl5G7W/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54
    #1 0x7f1b22c42029 in abort /build/glibc-Cl5G7W/glibc-2.23/stdlib/abort.c:89
    #2 0x7f1b22c38bd6 in __assert_fail_base /build/glibc-Cl5G7W/glibc-2.23/assert/assert.c:92
    #3 0x7f1b22c38c81 in __assert_fail /build/glibc-Cl5G7W/glibc-2.23/assert/assert.c:101
    #4 0x7f1b24340d10 in balance_quick third_party/sqlite/amalgamation/sqlite3.c:70087:7
    #5 0x7f1b24336601 in balance third_party/sqlite/amalgamation/sqlite3.c:71180:16
    #6 0x7f1b242fa3e4 in sqlite3BtreeInsert third_party/sqlite/amalgamation/sqlite3.c:71577:10
    #7 0x7f1b242bfdc3 in sqlite3VdbeExec third_party/sqlite/amalgamation/sqlite3.c:87712:8
    #8 0x7f1b241a912a in sqlite3Step third_party/sqlite/amalgamation/sqlite3.c:81445:10
    #9 0x7f1b2418e75a in sqlite3_step third_party/sqlite/amalgamation/sqlite3.c:81508:16
    #10 0x7f1b241bd508 in sqlite3_exec third_party/sqlite/amalgamation/sqlite3.c:118093:12
    #11 0x561855c1f372 in LLVMFuzzerTestOneInput third_party/sqlite/src/test/dbfuzz2.c:95:5

Deleted: clusterfuzz-testcase-minimized-sqlite3_dbfuzz2_fuzzer-5187981291945984 2.0 KB

clusterfuzz-testcase-minimized-sqlite3_dbfuzz2_fuzzer-5187981291945984 2.0 KB View Download

Fixed by check-in https://sqlite.org/src/info/1201615cbbd30701

Thank you very much for the quick fix, Richard! I am backporting this.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/846fd43e9412f97c0f0732807537fa3981c38ee3

commit 846fd43e9412f97c0f0732807537fa3981c38ee3
Author: Victor Costan <pwnall@chromium.org>
Date: Tue Jan 22 21:15:35 2019

sqlite: Backport a fourth round of bugfixes.

Bug:  914028 ,  914614 , 917075, 917786,  921417 , 921684, 922399, 922844, 922849,  923196 ,  923715 ,  923743 ,  923902 
Change-Id: Id642f518153293afa8787b70692a97560dc4691b
Reviewed-on: https://chromium-review.googlesource.com/c/1424164
Reviewed-by: Chris Mumford <cmumford@google.com>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Auto-Submit: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#624921}
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/amalgamation/rename_exports.h
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/amalgamation/sqlite3.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/amalgamation/sqlite3.h
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0001-Modify-default-VFS-to-support-WebDatabase.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0002-Virtual-table-supporting-recovery-of-corrupted-datab.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0003-Custom-shell.c-helpers-to-load-Chromium-s-ICU-data.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0004-fts3-Disable-fts3_tokenizer-and-fts4.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0005-fuchsia-Use-dot-file-locking-for-sqlite.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0006-Fix-dbfuzz2-for-Clusterfuzz.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0007-Fix-the-Makefile-so-that-it-honors-CFLAGS-when-build.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0008-Adjustments-to-the-page-cache-to-try-to-avoid-harmle.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0009-Remove-an-ALWAYS-from-a-branch-that-is-not-always-ta.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0010-Fix-a-problem-with-nested-CTEs-with-the-same-table.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0011-Fix-detection-of-self-referencing-rows-in-foreign-ke.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0012-Fix-a-segfault-caused-by-using-the-RAISE-function-in.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0013-Fix-for-an-assert-that-could-be-false.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0014-Fix-another-problem-found-by-Matthew-Denton-s-new-fu.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0015-Report-a-new-corruption-case.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0016-Avoid-a-buffer-overread-in-ptrmapPutOvflPtr.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0017-Improved-detection-of-cell-corruption-in-sqlite3Vdbe.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0018-Fix-a-segfault-in-fts3-prompted-by-a-corrupted-datab.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0019-Prevent-integer-overflow-from-leading-to-buffer-over.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0020-Add-extra-tests-for-database-corruption-inside-defra.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0021-Fix-an-off-by-one-error-on-a-Goto-in-the-code-genera.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0022-Fix-overread-on-corrupted-btree-key.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0023-Avoid-buffer-overreads-on-corrupted-database-files.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0024-Fix-integer-overflow-while-running-PRAGMA-integrity_.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0025-Improved-corruption-handling-while-balancing-pages.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0026-Avoid-reading-off-the-front-of-a-page-buffer-when-ba.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0027-Fix-MSAN-error-in-sqlite3VdbeRecordUnpack-on-a-corru.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0028-Fix-deleting-a-B-tree-entry-in-a-corrupt-database.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0029-Fix-sorting-results-with-SRT_EphemTab-and-a-LIMIT-cl.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0030-Fix-detection-of-orphaned-and-malformed-autoindexes.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0031-Fix-potential-buffer-overread.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0032-Fix-handling-negative-number-of-pages-database-field.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0033-Fix-corner-case-in-inserting-null-into-integer-prima.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0034-Fix-insert-infinite-recursion-on-some-corrupted-data.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0035-Fix-null-pointer-dereference-in-sqlite3ExprCompare.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0036-Fix-NEVER-that-is-sometimes-true.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0037-Initialize-extra-bytes-allocated-for-saved-cursor-po.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0038-Fix-leaks-caused-by-circular-references-in-vtable-sh.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0039-Fix-overly-large-malloc-on-btree-corruption.patch
[add] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/patches/0040-Fix-null-pointer-access-on-corrupted-index-key.patch
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/ext/fts3/fts3_write.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/ext/fts5/fts5_index.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/ext/fts5/fts5_storage.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/ext/rtree/rtree.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/btree.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/build.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/expr.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/insert.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/pcache1.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/prepare.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/sqlite.h.in
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/sqliteInt.h
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/trigger.c
[modify] https://crrev.com/846fd43e9412f97c0f0732807537fa3981c38ee3/third_party/sqlite/src/src/vdbeaux.c

ClusterFuzz has detected this issue as fixed in range 624909:624924.

Detailed report: https://clusterfuzz.com/testcase?key=5187981291945984

Fuzzer: libFuzzer_sqlite3_dbfuzz2_fuzzer
Fuzz target binary: sqlite3_dbfuzz2_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  0
  balance_quick
  balance
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=614851:614858
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=624909:624924

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5187981291945984

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5187981291945984 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.