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gh-111942: Fix SystemError in the TextIOWrapper constructor #112061

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merged 3 commits into from Nov 14, 2023
Merged

gh-111942: Fix SystemError in the TextIOWrapper constructor #112061

merged 3 commits into from Nov 14, 2023

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serhiy-storchaka
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@serhiy-storchaka serhiy-storchaka commented Nov 14, 2023 •
edited by bedevere-app bot

In non-debug more the check for the "errors" argument is skipped, and then PyUnicode_AsUTF8() can fail, but its result was not checked.

@serhiy-storchaka serhiy-storchaka added type-crash A hard crash of the interpreter, possibly with a core dump needs backport to 3.11 only security fixes needs backport to 3.12 bug and security fixes labels Nov 14, 2023
@bedevere-app bedevere-app bot mentioned this pull request Nov 14, 2023
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@serhiy-storchaka
pythongh-111942: Fix SystemError in the TextIOWrapper constructor
0a85bf3 
In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.
@serhiy-storchaka serhiy-storchaka changed the title gh-111942: Fix crash in the TextIOWrapper constructor gh-111942: Fix SystemError in the TextIOWrapper constructor Nov 14, 2023
@serhiy-storchaka serhiy-storchaka added type-bug An unexpected behavior, bug, or error and removed type-crash A hard crash of the interpreter, possibly with a core dump labels Nov 14, 2023
vstinner
vstinner reviewed Nov 14, 2023
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Modules/_io/textio.c Outdated Show resolved Hide resolved
@vstinner vstinner mentioned this pull request Nov 14, 2023
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@vstinner vstinner enabled auto-merge (squash) November 14, 2023 18:45
@vstinner vstinner enabled auto-merge (squash) November 14, 2023 18:45
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The previous change broke the Python workflow: #111976 (comment) This change should fix it.

@vstinner vstinner merged commit 9302f05 into python:main Nov 14, 2023
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@miss-islington-app
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Thanks @serhiy-storchaka for the PR, and @vstinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.11, 3.12.
🐍🍒⛏🤖

@miss-islington-app
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Sorry, @serhiy-storchaka and @vstinner, I could not cleanly backport this to 3.11 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 9302f05f9af07332c414b3c19003efd1b1763cf3 3.11

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Nov 14, 2023
@serhiy-storchaka @vstinner @miss-islington
pythongh-111942: Fix SystemError in the TextIOWrapper constructor (py…
8561de9 
…thonGH-112061)

In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.

(cherry picked from commit 9302f05)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
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bedevere-app bot commented Nov 14, 2023

GH-112085 is a backport of this pull request to the 3.12 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.12 bug and security fixes label Nov 14, 2023
@brettcannon
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I'm still seeing the test_io failure: https://buildbot.python.org/all/#/builders/1046/builds/3496/steps/11/logs/stdio .

@brettcannon
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Nm, it looks like it's passing now on a different buildbot (not sure if the "changes" tab was somehow stale on the buildbot master and it misattributed the contributing PRs).

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Nm, it looks like it's passing now on a different buildbot (not sure if the "changes" tab was somehow stale on the buildbot master and it misattributed the contributing PRs).

Time to time, I check the [Build Properties] tab to get the Git commit number. Sometimes, tracking buildbots can be confusing.

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bedevere-app bot commented Nov 14, 2023

GH-112089 is a backport of this pull request to the 3.12 branch.

vstinner pushed a commit to vstinner/cpython that referenced this pull request Nov 14, 2023
@serhiy-storchaka @vstinner
pythongh-111942: Fix SystemError in the TextIOWrapper constructor (py…
45075b8 
…thon#112061)

In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.

Co-authored-by: Victor Stinner <vstinner@python.org>
(cherry picked from commit 9302f05)
vstinner pushed a commit to vstinner/cpython that referenced this pull request Nov 14, 2023
@serhiy-storchaka @vstinner
pythongh-111942: Fix SystemError in the TextIOWrapper constructor (py…
7f58ab2 
…thon#112061)

In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.

Co-authored-by: Victor Stinner <vstinner@python.org>
(cherry picked from commit 9302f05)
@serhiy-storchaka serhiy-storchaka deleted the TextIOWrapper-init-crash branch November 15, 2023 08:48
@serhiy-storchaka
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I suggest to reject embedded null characters:

I planned to do this in the following PR. This PR cannot be automatically backported with these changes. Do you mind to create backports manually?

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I planned to do this in the following PR. This PR cannot be automatically backported with these changes. Do you mind to create backports manually?

I wrote PR #112089 for Python 3.12 using PyUnicode_AsUTF8AndSize() and strlen(). Would you mind to review it?

Then Python 3.11 can get the first change directly with the second fix (merged as a single PR).

serhiy-storchaka added a commit that referenced this pull request Nov 15, 2023
@vstinner @serhiy-storchaka
[3.12] gh-111942: Fix SystemError in the TextIOWrapper constructor (G…
1445d77 
…H-112061) (GH-112089)

In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.

Co-authored-by: Victor Stinner <vstinner@python.org>
(cherry picked from commit 9302f05)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
serhiy-storchaka added a commit to miss-islington/cpython that referenced this pull request Nov 15, 2023
@vstinner @serhiy-storchaka
[3.12] pythongh-111942: Fix SystemError in the TextIOWrapper construc…
52cafc8 
…tor (pythonGH-112061) (pythonGH-112089)

In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.

Co-authored-by: Victor Stinner <vstinner@python.org>
(cherry picked from commit 9302f05)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
@serhiy-storchaka serhiy-storchaka removed the needs backport to 3.11 only security fixes label Nov 15, 2023
aisk pushed a commit to aisk/cpython that referenced this pull request Feb 11, 2024
@serhiy-storchaka @vstinner @aisk
pythongh-111942: Fix SystemError in the TextIOWrapper constructor (py…
8d3b7eb 
…thon#112061)

In non-debug more the check for the "errors" argument is skipped,
and then PyUnicode_AsUTF8() can fail, but its result was not checked.

Co-authored-by: Victor Stinner <vstinner@python.org>
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