* [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image
[not found] <bug-200465-202145@https.bugzilla.kernel.org/>
@ 2018-08-26 0:56 ` bugzilla-daemon
2018-09-13 18:48 ` bugzilla-daemon
` (3 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-08-26 0:56 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=200465
Chao Yu (chao@kernel.org) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |chao@kernel.org
Component|Other |f2fs
Assignee|fs_other@kernel-bugs.osdl.o |filesystem_f2fs@kernel-bugs
|rg |.kernel.org
--- Comment #1 from Chao Yu (chao@kernel.org) ---
Wen Xu,
I didn't see encryption feature is on in uploaded image, but actually, our
stack is stuck in decrypting flow, could you check the image again?
Info: superblock features = 0 :
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* [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image
[not found] <bug-200465-202145@https.bugzilla.kernel.org/>
2018-08-26 0:56 ` [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image bugzilla-daemon
@ 2018-09-13 18:48 ` bugzilla-daemon
2018-09-17 3:04 ` bugzilla-daemon
` (2 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-09-13 18:48 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=200465
Steve Beattie (sbeattie@ubuntu.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sbeattie@ubuntu.com
--- Comment #2 from Steve Beattie (sbeattie@ubuntu.com) ---
This was assigned CVE-2018-14616 (see
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14616).
Chao, is it correct that the fix for this issue landed as
https://git.kernel.org/linus/91291e9998d208370eb8156c760691b873bd7522 ? Or are
additional fixes needed?
Thanks!
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* [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image
[not found] <bug-200465-202145@https.bugzilla.kernel.org/>
2018-08-26 0:56 ` [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image bugzilla-daemon
2018-09-13 18:48 ` bugzilla-daemon
@ 2018-09-17 3:04 ` bugzilla-daemon
2018-09-20 21:11 ` bugzilla-daemon
2018-09-21 1:41 ` bugzilla-daemon
4 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-09-17 3:04 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=200465
--- Comment #3 from Chao Yu (chao@kernel.org) ---
Steve,
I figure out that patch to solve issue which I encounter with image attached by
Wen Xu, the bug can be triggered with below scripts:
- mount image /mnt/f2fs/
- cd /mnt/f2fs/foo/bar/
- ls -l
After applying that patch, the problem was gone.
But when the bug triggeres, related call stack is not the same as reported one,
also I can't reproduce reported call stack with the method provided from Wen
Xu.
I guess the right producing way is adding master key for encrypted file, I'd
like to confirm with Wen Xu.
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* [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image
[not found] <bug-200465-202145@https.bugzilla.kernel.org/>
` (2 preceding siblings ...)
2018-09-17 3:04 ` bugzilla-daemon
@ 2018-09-20 21:11 ` bugzilla-daemon
2018-09-21 1:41 ` bugzilla-daemon
4 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-09-20 21:11 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=200465
--- Comment #4 from Wen Xu (wen.xu@gatech.edu) ---
(In reply to Chao Yu from comment #3)
> Steve,
>
> I figure out that patch to solve issue which I encounter with image attached
> by Wen Xu, the bug can be triggered with below scripts:
> - mount image /mnt/f2fs/
> - cd /mnt/f2fs/foo/bar/
> - ls -l
>
> After applying that patch, the problem was gone.
>
> But when the bug triggeres, related call stack is not the same as reported
> one, also I can't reproduce reported call stack with the method provided
> from Wen Xu.
>
> I guess the right producing way is adding master key for encrypted file, I'd
> like to confirm with Wen Xu.
Hi Chao,
Sorry for a late reply! Eh the first thing is that I never did anything like
adding master key for encrypted file. Second, I feel I pasted wrong
(mismatched) kernel message/PoC...but unfortunately I do not have a local copy
on my laptop now.
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* [Bug 200465] null ptr dereference in fscrypt_do_page_crypto() when operating a file on a corrupted f2fs image
[not found] <bug-200465-202145@https.bugzilla.kernel.org/>
` (3 preceding siblings ...)
2018-09-20 21:11 ` bugzilla-daemon
@ 2018-09-21 1:41 ` bugzilla-daemon
4 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-09-21 1:41 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=200465
Chao Yu (chao@kernel.org) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEEDINFO
--- Comment #5 from Chao Yu (chao@kernel.org) ---
(In reply to Wen Xu from comment #4)
> (In reply to Chao Yu from comment #3)
> > Steve,
> >
> > I figure out that patch to solve issue which I encounter with image
> attached
> > by Wen Xu, the bug can be triggered with below scripts:
> > - mount image /mnt/f2fs/
> > - cd /mnt/f2fs/foo/bar/
> > - ls -l
> >
> > After applying that patch, the problem was gone.
> >
> > But when the bug triggeres, related call stack is not the same as reported
> > one, also I can't reproduce reported call stack with the method provided
> > from Wen Xu.
> >
> > I guess the right producing way is adding master key for encrypted file,
> I'd
> > like to confirm with Wen Xu.
>
> Hi Chao,
>
> Sorry for a late reply! Eh the first thing is that I never did anything like
> adding master key for encrypted file. Second, I feel I pasted wrong
> (mismatched) kernel message/PoC...but unfortunately I do not have a local
> copy on my laptop now.
Hi Wen,
Oops, if you got another similar kernel message, please let me know.
BTW, let me tag status of this issue as NEEDINFO
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