linux-kernel - Re: Fwd: vmalloc error: btrfs-delalloc btrfs_work

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Message-ID: <fcf1d04.faed4a1a.18844d8e78f@tnonline.net>
Date:   Mon, 22 May 2023 21:04:05 +0200 (GMT+02:00)
From:   Forza <forza@...nline.net>
To:     Bagas Sanjaya <bagasdotme@...il.com>,
        Linux btrfs <linux-btrfs@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Stable <stable@...r.kernel.org>
Cc:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>, a1bert@...as.cz
Subject: Re: Fwd: vmalloc error: btrfs-delalloc btrfs_work_helper [btrfs] in
 kernel 6.3.x



---- From: Bagas Sanjaya <bagasdotme@...il.com> -- Sent: 2023-05-22 - 15:25 ----

> Hi,
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
>> after updating from 6.2.x to 6.3.x, vmalloc error messages started to appear in the dmesg
>> 
>> 
>> 
>> # free 
>>                total        used        free      shared  buff/cache   available
>> Mem:        16183724     1473068      205664       33472    14504992    14335700
>> Swap:       16777212      703596    16073616
>> 
>> 
>> (zswap enabled)
> 
> See bugzilla for the full thread and attached dmesg.
> 
> On the report, the reporter can't perform the required bisection,
> unfortunately.
> 
> Anyway, I'm adding it to regzbot:
> 
> #regzbot introduced: v6.2..v6.3 https://bugzilla.kernel.org/show_bug.cgi?id=217466
> #regzbot title: btrfs_work_helper dealloc error in v6.3.x
> 
> Thanks.
> 
> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217466
> 

I have a similar experience with kernel 6.3 where vmalloc fails in a similar way. I was able to reproduce it in a QEMU VM as well as on my system. 

https://lore.kernel.org/all/d11418b6-38e5-eb78-1537-c39245dc0b78@tnonline.net/T/