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.

This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Richard and Dan, could you please take a look?

Please let me know if this information isn't sufficient.

Stack trace:
    #0 0x7f85d401d5b9 in readMasterJournal third_party/sqlite/amalgamation/sqlite3.c:51766:4
    #1 0x7f85d4015073 in pager_playback third_party/sqlite/amalgamation/sqlite3.c:53280:8
    #2 0x7f85d40125ce in sqlite3PagerRollback third_party/sqlite/amalgamation/sqlite3.c:57122:10
    #3 0x7f85d3f9dacd in sqlite3BtreeRollback third_party/sqlite/amalgamation/sqlite3.c:67145:11
    #4 0x7f85d404a7e1 in sqlite3RollbackAll third_party/sqlite/amalgamation/sqlite3.c:153727:7
    #5 0x7f85d40490b9 in sqlite3VdbeHalt third_party/sqlite/amalgamation/sqlite3.c:0
    #6 0x7f85d405c62c in sqlite3VdbeExec third_party/sqlite/amalgamation/sqlite3.c:90587:3
    #7 0x7f85d3fa5ccc in sqlite3Step third_party/sqlite/amalgamation/sqlite3.c:81415:10
    #8 0x7f85d3f923ee in sqlite3_step third_party/sqlite/amalgamation/sqlite3.c:81478:16
    #9 0x7f85d3fb8021 in sqlite3_exec third_party/sqlite/amalgamation/sqlite3.c:118058:12
    #10 0x55ce5b503c89 in LLVMFuzzerTestOneInput third_party/sqlite/src/test/dbfuzz2.c:97:5

Test case attached.

Deleted: clusterfuzz-testcase-minimized-sqlite3_dbfuzz2_fuzzer-5768995506225152 3.0 KB

clusterfuzz-testcase-minimized-sqlite3_dbfuzz2_fuzzer-5768995506225152 3.0 KB View Download

Fixed on 2018-12-14 by SQLite check-in https://sqlite.org/src/info/cc42dd15100db28a

Thank you very much for the quick response! I'm backporting this.

 Issue 914716  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643

commit c61e3e2f00de49b85c2bd76c252d2a9fd13ed643
Author: Victor Costan <pwnall@chromium.org>
Date: Fri Jan 11 23:20:45 2019

sqlite: Backport a few bug fixes.

This CL removes an unnecessary change in
0006-Fix-dbfuzz2-for-Clusterfuzz.patch and backports fixes for a few
recently discovered issues. The added patches will go away in the
next SQLite upgrade.

Bug: 911253, 911255, 914407,  915348 ,  915479 ,  916478 ,  917285 ,  917380 ,  917834 ,  918035 
Change-Id: I595de36637cdb256153d92f21958b05e2ea6ac92
Reviewed-on: https://chromium-review.googlesource.com/c/1406928
Reviewed-by: Chris Mumford <cmumford@google.com>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622207}
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/amalgamation/sqlite3.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0001-Modify-default-VFS-to-support-WebDatabase.patch
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0002-Virtual-table-supporting-recovery-of-corrupted-datab.patch
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0003-Custom-shell.c-helpers-to-load-Chromium-s-ICU-data.patch
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0004-fts3-Disable-fts3_tokenizer-and-fts4.patch
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0005-fuchsia-Use-dot-file-locking-for-sqlite.patch
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0006-Fix-dbfuzz2-for-Clusterfuzz.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0007-Fix-the-Makefile-so-that-it-honors-CFLAGS-when-build.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0008-Adjustments-to-the-page-cache-to-try-to-avoid-harmle.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0009-Remove-an-ALWAYS-from-a-branch-that-is-not-always-ta.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0010-Fix-a-problem-with-nested-CTEs-with-the-same-table.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0011-Fix-detection-of-self-referencing-rows-in-foreign-ke.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0012-Fix-a-segfault-caused-by-using-the-RAISE-function-in.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0013-Fix-for-an-assert-that-could-be-false.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0014-Fix-another-problem-found-by-Matthew-Denton-s-new-fu.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0015-Report-a-new-corruption-case.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0016-Avoid-a-buffer-overread-in-ptrmapPutOvflPtr.patch
[add] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/patches/0017-Improved-detection-of-cell-corruption-in-sqlite3Vdbe.patch
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/Makefile.in
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/src/btree.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/src/expr.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/src/fkey.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/src/pcache1.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/src/select.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/src/vdbeaux.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/test/dbfuzz2.c
[modify] https://crrev.com/c61e3e2f00de49b85c2bd76c252d2a9fd13ed643/third_party/sqlite/src/test/fuzzcheck.c

ClusterFuzz has detected this issue as fixed in range 622204:622215.

Detailed report: https://clusterfuzz.com/testcase?key=5768995506225152

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

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  readMasterJournal
  pager_playback
  sqlite3PagerRollback
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=614851:614852
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=622204:622215

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5768995506225152

See https://www.chromium.org/developers/testing/memorysanitizer#TOC-Reproducing-ClusterFuzz-Bugs 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 5768995506225152 is verified as fixed, so closing issue as verified.

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

The following revision refers to this bug: 
https://chromium.googlesource.com/chromium/src.git/+/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8

Commit: e6d709904788b93ca8f88bbf67ad0a7af26e5bb8
Author: staphany@chromium.org
Commiter: pwnall@chromium.org
Date: 2019-01-15 22:21:13 +0000 UTC

sqlite: Backport a few bug fixes.

This CL removes an unnecessary change in
0006-Fix-dbfuzz2-for-Clusterfuzz.patch and backports fixes for a few
recently discovered issues. The added patches will go away in the
next SQLite upgrade.

(cherry picked from commit c61e3e2f00de49b85c2bd76c252d2a9fd13ed643)

Bug: 911253, 911255, 914407,  915348 ,  915479 ,  916478 ,  917285 ,  917380 ,  917834 ,  918035 
Change-Id: I595de36637cdb256153d92f21958b05e2ea6ac92
Reviewed-on: https://chromium-review.googlesource.com/c/1406928
Reviewed-by: Chris Mumford <cmumford@google.com>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#622207}
Reviewed-on: https://chromium-review.googlesource.com/c/1413452
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#703}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8

commit e6d709904788b93ca8f88bbf67ad0a7af26e5bb8
Author: Staphany Park <staphany@chromium.org>
Date: Tue Jan 15 22:21:13 2019

sqlite: Backport a few bug fixes.

This CL removes an unnecessary change in
0006-Fix-dbfuzz2-for-Clusterfuzz.patch and backports fixes for a few
recently discovered issues. The added patches will go away in the
next SQLite upgrade.

(cherry picked from commit c61e3e2f00de49b85c2bd76c252d2a9fd13ed643)

Bug: 911253, 911255, 914407,  915348 ,  915479 ,  916478 ,  917285 ,  917380 ,  917834 ,  918035 
Change-Id: I595de36637cdb256153d92f21958b05e2ea6ac92
Reviewed-on: https://chromium-review.googlesource.com/c/1406928
Reviewed-by: Chris Mumford <cmumford@google.com>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#622207}
Reviewed-on: https://chromium-review.googlesource.com/c/1413452
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#703}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/amalgamation/sqlite3.c
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0001-Modify-default-VFS-to-support-WebDatabase.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0002-Virtual-table-supporting-recovery-of-corrupted-datab.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0003-Custom-shell.c-helpers-to-load-Chromium-s-ICU-data.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0004-fts3-Disable-fts3_tokenizer-and-fts4.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0005-fuchsia-Use-dot-file-locking-for-sqlite.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0006-Fix-dbfuzz2-for-Clusterfuzz.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0007-Fix-the-Makefile-so-that-it-honors-CFLAGS-when-build.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0008-Adjustments-to-the-page-cache-to-try-to-avoid-harmle.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0009-Remove-an-ALWAYS-from-a-branch-that-is-not-always-ta.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0010-Fix-a-problem-with-nested-CTEs-with-the-same-table.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0011-Fix-detection-of-self-referencing-rows-in-foreign-ke.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0012-Fix-a-segfault-caused-by-using-the-RAISE-function-in.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0013-Fix-for-an-assert-that-could-be-false.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0014-Fix-another-problem-found-by-Matthew-Denton-s-new-fu.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0015-Report-a-new-corruption-case.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0016-Avoid-a-buffer-overread-in-ptrmapPutOvflPtr.patch
[add] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/patches/0017-Improved-detection-of-cell-corruption-in-sqlite3Vdbe.patch
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/Makefile.in
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/src/btree.c
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/src/expr.c
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/src/fkey.c
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/src/pcache1.c
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/src/select.c
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/src/vdbeaux.c
[modify] https://crrev.com/e6d709904788b93ca8f88bbf67ad0a7af26e5bb8/third_party/sqlite/src/test/fuzzcheck.c