linux-kernel - Re: [syzbot] [fs?] KASAN: global-out-of-bounds Read in number

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Message-ID: <6785f61e.050a0220.216c54.0068.GAE@google.com>
Date: Mon, 13 Jan 2025 21:29:02 -0800
From: syzbot <syzbot+fcee6b76cf2e261c51a4@...kaller.appspotmail.com>
To: adobriyan@...il.com, akpm@...ux-foundation.org, 
	andriy.shevchenko@...ux.intel.com, axboe@...nel.dk, brauner@...nel.org, 
	eadavis@...com, kirill.shutemov@...ux.intel.com, linux-block@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux@...musvillemoes.dk, pmladek@...e.com, rick.p.edgecombe@...el.com, 
	rostedt@...dmis.org, senozhatsky@...omium.org, 
	syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org, 
	viro@...iv.linux.org.uk, zhouchengming@...edance.com
Subject: Re: [syzbot] [fs?] KASAN: global-out-of-bounds Read in number

syzbot has bisected this issue to:

commit 8d4826cc8a8aca01a3b5e95438dfc0eb3bd589ab
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Thu Dec 19 21:52:53 2024 +0000

    vsnprintf: collapse the number format state into one single state

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16342a18580000
start commit:   7b4b9bf203da Add linux-next specific files for 20250107
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=15342a18580000
console output: https://syzkaller.appspot.com/x/log.txt?x=11342a18580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=63fa2c9d5e12faef
dashboard link: https://syzkaller.appspot.com/bug?extid=fcee6b76cf2e261c51a4
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=174f0a18580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=168aecb0580000

Reported-by: syzbot+fcee6b76cf2e261c51a4@...kaller.appspotmail.com
Fixes: 8d4826cc8a8a ("vsnprintf: collapse the number format state into one single state")

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