linux-kernel - Re: [syzbot] [mm?] WARNING in copy_huge

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Message-ID: <66f63272.050a0220.38ace9.0009.GAE@google.com>
Date: Thu, 26 Sep 2024 21:20:02 -0700
From: syzbot <syzbot+bf2c35fa302ebe3c7471@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, bp@...en8.de, dave.hansen@...ux.intel.com, 
	david@...hat.com, hpa@...or.com, jgg@...pe.ca, leitao@...ian.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, mingo@...hat.com, 
	peterx@...hat.com, rppt@...nel.org, syzkaller-bugs@...glegroups.com, 
	tglx@...utronix.de, x86@...nel.org
Subject: Re: [syzbot] [mm?] WARNING in copy_huge_pmd

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+bf2c35fa302ebe3c7471@...kaller.appspotmail.com
Tested-by: syzbot+bf2c35fa302ebe3c7471@...kaller.appspotmail.com

Tested on:

commit:         08768b86 mm/huge_memory: check pmd_special() only afte..
git tree:       https://github.com/davidhildenbrand/linux.git copy_huge_pmd_pfn
console output: https://syzkaller.appspot.com/x/log.txt?x=1087aaa9980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=bc30a30374b0753
dashboard link: https://syzkaller.appspot.com/bug?extid=bf2c35fa302ebe3c7471
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.