* Open tasks?
@ 2020-01-21 4:34 Raymond Deng
2020-01-21 4:36 ` Raymond Deng
2020-01-30 10:00 ` Dan Carpenter
0 siblings, 2 replies; 3+ messages in thread
From: Raymond Deng @ 2020-01-21 4:34 UTC (permalink / raw)
To: kernel-janitors
Hi, are there open tasks for reasonably new people to do?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Open tasks?
2020-01-21 4:34 Open tasks? Raymond Deng
@ 2020-01-21 4:36 ` Raymond Deng
2020-01-30 10:00 ` Dan Carpenter
1 sibling, 0 replies; 3+ messages in thread
From: Raymond Deng @ 2020-01-21 4:36 UTC (permalink / raw)
To: kernel-janitors
Hi, are there open tasks for reasonably new people to do? Thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Open tasks?
2020-01-21 4:34 Open tasks? Raymond Deng
2020-01-21 4:36 ` Raymond Deng
@ 2020-01-30 10:00 ` Dan Carpenter
1 sibling, 0 replies; 3+ messages in thread
From: Dan Carpenter @ 2020-01-30 10:00 UTC (permalink / raw)
To: kernel-janitors
On Mon, Jan 20, 2020 at 08:36:32PM -0800, Raymond Deng wrote:
> Hi, are there open tasks for reasonably new people to do? Thanks.
The new hotest idea is to sign up for te syzbot mailing list and fix
bugs.
For example:
https://syzkaller.appspot.com/bug?extidÃ7a14770d51a085a520
It has a c reproducer. It has been bisected but if it's a race
condition, the git bisection could be suspect. It affects v5.5-rc7
(It's in the dmesg, you need the version information for the lines to
match up).
My first thought was that it is an integer overflow but I can't see how
that would be possible. Smatch said it was possible, but Smatch assumed
that we had set vc->vc_cols to an invalid number before the start.
Btw, using the Smatch `smdb.py where vc_cols` command is super helpful
for debugging these bugs.
Then my next thought was that it is a race condition but we're always
holding the console_lock() so I can't see how that works either...
Again for these things `smdb.py` really helps for examining the callers.
I'm working on recording when the caller is holding a lock but it's a
bit complicated and I'm not ready to push that code yet.
It's a mystery.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-01-21 4:34 Open tasks? Raymond Deng
2020-01-21 4:36 ` Raymond Deng
2020-01-30 10:00 ` Dan Carpenter
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