linux-kernel - Re: commit 1c29a32ce65f4cd0f1c causes Bad rss-counter state and firefox-esr crash in linux-next-20240613

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Message-ID: <f44ed73a49518a991003851e9075cb19eb9234a4.camel@web.de>
Date: Fri, 14 Jun 2024 10:26:23 +0200
From: Bert Karwatzki <spasswolf@....de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: "Liam R. Howlett" <Liam.Howlett@...cle.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org
Subject: Re: commit 1c29a32ce65f4cd0f1c causes Bad rss-counter state and
 firefox-esr crash in linux-next-20240613

Am Donnerstag, dem 13.06.2024 um 17:03 -0700 schrieb Andrew Morton:
> Let's hope Linus doesn't read this.  Why are we nuking the entire
> planet just because some counter went wonky?

It's not just the wonky counter, the error always comes with a segfault which
causes a firefox tab to crash, though I've not yet figured out how this is
related to the BUG message or commit 1c29a32ce.

[  179.393488] [   T2278] show_signal_msg: 16 callbacks suppressed
[  179.393492] [   T2278] Privileged Cont[2278]: segfault at 22cddf91d3a0 ip
000022cde1aad010 sp 00007ffc616851a8 error 7 likely on CPU 15 (core 7, socket 0)
[  179.393504] [   T2278] Code: Unable to access opcode bytes at 0x22cde1aacfe6.
[  179.498173] [   T2289] BUG: Bad rss-counter state mm:00000000d0a3f682
type:MM_ANONPAGES val:1885

Bert Karwatzki