From: John Szakmeister <john@szakmeister.net>
To: git@vger.kernel.org
Subject: "git fsck" not detecting garbage at the end of blob object files...
Date: Sat, 7 Jan 2017 07:50:19 -0500 [thread overview]
Message-ID: <CAEBDL5Uc39JagdmXUxfxh1TPSK3H5wxoTfjK-pfLRYjciBnHpA@mail.gmail.com> (raw)
I was perusing StackOverflow this morning and ran across this
question: http://stackoverflow.com/questions/41521143/git-fsck-full-only-checking-directories/
It was a simple question about why "checking objects" was not
appearing, but in it was another issue. The user purposefully
corrupted a blob object file to see if `git fsck` would catch it by
tacking extra data on at the end. `git fsck` happily said everything
was okay, but when I played with things locally I found out that `git
gc` does not like that extra garbage. I'm not sure what the trade-off
needs to be here, but my expectation is that if `git fsck` says
everything is okay, then all operations using that object (file)
should work too.
Is that unreasonable? What would be the impact of fixing this issue?
-John
next reply other threads:[~2017-01-07 12:50 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-07 12:50 John Szakmeister [this message]
2017-01-07 21:47 ` "git fsck" not detecting garbage at the end of blob object files Dennis Kaarsemaker
2017-01-08 5:26 ` Jeff King
2017-01-13 9:15 ` John Szakmeister
2017-01-13 17:52 ` [PATCH 0/6] loose-object fsck fixes/tightening Jeff King
2017-01-13 17:54 ` [PATCH 1/6] t1450: refactor loose-object removal Jeff King
2017-01-13 17:54 ` [PATCH 2/6] sha1_file: fix error message for alternate objects Jeff King
2017-01-13 17:55 ` [PATCH 3/6] t1450: test fsck of packed objects Jeff King
2017-01-13 17:58 ` [PATCH 4/6] sha1_file: add read_loose_object() function Jeff King
2017-01-13 17:59 ` [PATCH 5/6] fsck: parse loose object paths directly Jeff King
2018-10-30 20:03 ` Infinite loop regression in git-fsck in v2.12.0 Ævar Arnfjörð Bjarmason
2018-10-30 21:35 ` Jeff King
2018-10-30 22:28 ` Junio C Hamano
2018-10-30 22:56 ` Jeff King
2018-10-30 23:12 ` Jeff King
2018-10-30 23:18 ` [PATCH 1/3] t1450: check large blob in trailing-garbage test Jeff King
2018-10-30 23:23 ` [PATCH 2/3] check_stream_sha1(): handle input underflow Jeff King
2018-10-31 4:23 ` Junio C Hamano
2018-10-31 4:30 ` Jeff King
2018-10-31 4:44 ` Junio C Hamano
2018-10-31 5:03 ` Jeff King
2018-10-31 5:13 ` Jeff King
2018-10-31 5:31 ` Junio C Hamano
2018-10-30 23:23 ` [PATCH 3/3] cat-file: handle streaming failures consistently Jeff King
2018-10-31 12:42 ` [PATCH 0/3] Add a GIT_TEST_FSCK test mode Ævar Arnfjörð Bjarmason
2018-10-31 12:42 ` [PATCH 1/3] tests: add a "env-bool" helper to test-tool Ævar Arnfjörð Bjarmason
2018-10-31 12:42 ` [PATCH 2/3] tests: mark those tests where "git fsck" fails at the end Ævar Arnfjörð Bjarmason
2018-11-01 3:37 ` Junio C Hamano
2018-10-31 12:42 ` [PATCH 3/3] tests: add a special test setup that runs "git fsck" before exiting Ævar Arnfjörð Bjarmason
2018-10-31 13:33 ` [PATCH 3/3] cat-file: handle streaming failures consistently Torsten Bögershausen
2018-10-31 14:23 ` Junio C Hamano
2018-10-31 14:37 ` Jeff King
2018-10-31 17:38 ` Eric Sunshine
2018-10-31 20:29 ` Jeff King
2018-10-30 21:56 ` Infinite loop regression in git-fsck in v2.12.0 Ævar Arnfjörð Bjarmason
2018-10-30 23:08 ` Jeff King
2017-01-13 18:00 ` [PATCH 6/6] fsck: detect trailing garbage in all object types Jeff King
2017-01-19 11:18 ` [PATCH 0/6] loose-object fsck fixes/tightening John Szakmeister
2017-01-13 9:16 ` "git fsck" not detecting garbage at the end of blob object files John Szakmeister
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