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SubjectRe: 5.8-rc1: new warnings in ext4_mb_new_blocks?
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On 6/15/20 1:07 PM, Pavel Machek wrote:
> Hi!
>
> Booting 5.8-rc1 on x220, I get scary warnings:
>
> [ 7.089941] EXT4-fs (sdb2): mounted filesystem with ordered data mode. Opts: errors=remount-ro
> [ 7.343231] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/2788
> [ 7.344052] caller is debug_smp_processor_id+0x17/0x20
> [ 7.344897] CPU: 3 PID: 2788 Comm: systemd-tmpfile Not tainted 5.8.0-rc1+ #116
> [ 7.345745] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET74WW (1.44 ) 03/13/2018
> [ 7.346561] Call Trace:
> [ 7.347355] dump_stack+0x60/0x7a
> [ 7.348170] check_preemption_disabled+0xb1/0xc0
> [ 7.348951] debug_smp_processor_id+0x17/0x20
> [ 7.349728] ext4_mb_new_blocks+0x1f2/0x13e0
>
> and they continue after boot.
>

Below should fix this. I guess it couldn't make it to rc1.

https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?h=ext4-for-linus-5.8-rc1-2&id=811985365378df01386c3cfb7ff716e74ca376d5

-ritesh

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