linux-kernel - Re: linux-next: boottime warning from todays linux-next

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Date:   Thu, 10 Feb 2022 19:06:15 +0100
From:   Domenico Andreoli <domenico.andreoli@...ux.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Tong Zhang <ztong0001@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: boottime warning from todays linux-next

On Thu, Feb 10, 2022 at 07:33:02PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> On Thu, 10 Feb 2022 18:43:40 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > My qemu boot of a powerpc pseries_le_defconfig kernel produced these
> > kernel messages:
> > 
> >   CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc3 #2
> >   Call Trace:
> >   [c0000000073e3a80] [c0000000007bfd40] dump_stack_lvl+0x74/0xa8 (unreliable)
> >   [c0000000073e3ac0] [c00000000057e3dc] __register_sysctl_table+0x60c/0x9f0
> >   [c0000000073e3bd0] [c000000002041170] init_fs_stat_sysctls+0x48/0x60
> >   [c0000000073e3bf0] [c000000000012110] do_one_initcall+0x60/0x2d0
> >   [c0000000073e3cd0] [c0000000020049f0] kernel_init_freeable+0x334/0x3dc
> >   [c0000000073e3db0] [c000000000012710] kernel_init+0x30/0x1a0
> >   [c0000000073e3e10] [c00000000000cd64] ret_from_kernel_thread+0x5c/0x64
> > 
> > Presumably introduced by commit
> > 
> >   b42bc9a3c511 ("Fix regression due to "fs: move binfmt_misc sysctl to its own file"")
> 
> OK, I cannot reproduce this with just Linus' tree.  I will try to bisect.

I could not reproduce it on either my amd64 or arm64.

Dom

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