linux-kernel - Re: [syzbot] [fs?] general protection fault in pagemap_scan_hugetlb

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Date: Sat, 30 Dec 2023 10:24:08 -0800
From: syzbot <syzbot+6e2ccedb96d1174e6a5f@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, brauner@...nel.org, dan.carpenter@...aro.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, llvm@...ts.linux.dev, mike.kravetz@...cle.com, 
	muchun.song@...ux.dev, nathan@...nel.org, ndesaulniers@...gle.com, 
	sidhartha.kumar@...cle.com, syzkaller-bugs@...glegroups.com, trix@...hat.com, 
	viro@...iv.linux.org.uk
Subject: Re: [syzbot] [fs?] general protection fault in pagemap_scan_hugetlb_entry

syzbot suspects this issue was fixed by commit:

commit 4a3ef6be03e6700037fc20e63aa5ffd972e435ca
Author: Sidhartha Kumar <sidhartha.kumar@...cle.com>
Date:   Mon Dec 4 18:32:34 2023 +0000

    mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=126d4145e80000
start commit:   df60cee26a2e Merge tag '6.7-rc3-smb3-server-fixes' of git:..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=bb39fe85d254f638
dashboard link: https://syzkaller.appspot.com/bug?extid=6e2ccedb96d1174e6a5f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17befd62e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10d5a90ce80000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI

For information about bisection process see: https://goo.gl/tpsmEJ#bisection