From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D39413C918 for ; Tue, 24 Feb 2026 04:48:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771908515; cv=none; b=gPBjljMc3mlvLbznRk+lUf9BKECcrmGvEk0Clan00KHVXlQIdyWHtPp+muMMr8q6ymClbkEcjkmiut3po7zbvs1XCEVGSHcaKxNjAS5EIqPy4iKEgm62DcooH9DEj5UO3iv/kOBa/kaN7qviqUMEgtKfkv4+IBt0/axsm4ZCyOw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771908515; c=relaxed/simple; bh=QCdg4elc9oyCZtezVySXuUyV4YmEFBgH4l74oEvSa4g=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=rq7N2Zm15czzXizDGVTgXcJu/an3QUig7yD191aVQHYF1slV964lAnpDv5OHXXbm4n9jZP7NNYoSoo2mq4jaIr7c845edMp3DoZGHi6advWYvEtix6sHeNvrSfq8QUyZY/kpBupP49TBLcwBM9rNVgRC5wtJWemSwORtosxuajA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f70.google.com with SMTP id 006d021491bc7-679c44ae7abso50930957eaf.1 for ; Mon, 23 Feb 2026 20:48:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771908513; x=1772513313; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=oWtSLJc4nIIjVEnAWb0GJjQ5OC/U2fFyyXC24rRSQ+U=; b=KFYF+cjAcR0dF8OOsMZTmBr6OHkZbCD1Gg50nvsX3Pmwt3ALg/Ehft+EeJ8t2W6+KT fDTBa/ml4t+4qLoNlcA3xVLRwDnTVgVcNFTf2VOY2zpuaTsEEBC7V3Jgzv2P8QKLF5mT kIzbi/rCxAwrbOoKKHjx3rPfOlOy6kyIHYh2SJUCR/O8ViRqStk6NXJVVer825wSmSwz S4wCG7reQFwWZBzLNPNAkSTkJ5CsEuDxO91qjzjPDRRyhoocmktMJ2/C8EDrQiJGoPTs i+6iyKBsUGp/gikZKYQzcomY2/VbQXZgdAwopj0srvsj5knFc5d7WpWk8O79V20ZDJXD bk4Q== X-Forwarded-Encrypted: i=1; AJvYcCUHzRWLl52jINuU+Aw/jOuWPnmN1NOqe6bBFC3Ri2XiISJWYZiNM98oMo7Wuk6U82njDSYzyu+jW9TLr7E=@vger.kernel.org X-Gm-Message-State: AOJu0Yxa822lIYD3ZHPBIJQ2+atecryS48CXWIjtU6XZeRfRYgQUt2s8 ErqXyd+1jaWP4hBgHjK4k5uxHY9zMl2wC8/9RkoA5OJ3efqmCYxbWQ7iZbIIeB+h6Nr72hijKZy Liwqn0Q1IaJveLJux17HRqJlyRu5Q3/FTMkjv8zD8nXc8Eq9pI/8UfVyZZcE= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:c8d:b0:679:9252:6607 with SMTP id 006d021491bc7-679b123dc2bmr8849685eaf.41.1771908513053; Mon, 23 Feb 2026 20:48:33 -0800 (PST) Date: Mon, 23 Feb 2026 20:48:33 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <699d2da1.a00a0220.121a60.00f4.GAE@google.com> Subject: [syzbot] [kasan?] [mm?] WARNING in __kfence_free (4) From: syzbot To: akpm@linux-foundation.org, dvyukov@google.com, elver@google.com, glider@google.com, kasan-dev@googlegroups.com, kees@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8bf22c33e7a1 Merge tag 'net-7.0-rc1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1220195a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1bd834155be39cb dashboard link: https://syzkaller.appspot.com/bug?extid=ac1ff64591d23db965f7 compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-8bf22c33.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/80710eccc853/vmlinux-8bf22c33.xz kernel image: https://storage.googleapis.com/syzbot-assets/9a174aad260d/Image-8bf22c33.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ac1ff64591d23db965f7@syzkaller.appspotmail.com soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. ------------[ cut here ]------------ WARNING: mm/kfence/core.c:1224 at __kfence_free+0x60/0x100 mm/kfence/core.c:1244, CPU#1: syz-executor/3322 Modules linked in: CPU: 1 UID: 0 PID: 3322 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 81402009 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : __kfence_free+0x60/0x100 mm/kfence/core.c:1224 lr : kfence_free include/linux/kfence.h:187 [inline] lr : slab_free_hook mm/slub.c:2625 [inline] lr : slab_free mm/slub.c:6124 [inline] lr : kfree+0x3bc/0x3f4 mm/slub.c:6442 sp : ffff800089acbab0 x29: ffff800089acbab0 x28: fbf0000005fa0000 x27: 0000000000000000 x26: 0000000000084008 x25: ffff800082a81000 x24: 0000000000000000 x23: f6f0000003412e00 x22: ffff80008033b784 x21: ffffc1ffc1ffc000 x20: 5eaf80008033b784 x19: fff000007d89df78 x18: 0000000000000002 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 000000000006f7ec x12: 0000000000000001 x11: 0000000000000400 x10: 0000000000006400 x9 : 00000000000000b0 x8 : f3f000000622c45c x7 : 0000000000000024 x6 : 0000000000000024 x5 : 000000000000003c x4 : fff000007d87a000 x3 : ffff800082a81000 x2 : ffff800082a815e0 x1 : f4f0000005ff0c80 x0 : fff000007ff00000 Call trace: __kfence_free+0x60/0x100 mm/kfence/core.c:1244 (P) kfence_free include/linux/kfence.h:187 [inline] slab_free_hook mm/slub.c:2625 [inline] slab_free mm/slub.c:6124 [inline] kfree+0x3bc/0x3f4 mm/slub.c:6442 kvfree+0x3c/0x58 mm/slub.c:6760 xt_free_table_info+0x80/0x90 net/netfilter/x_tables.c:1213 __do_replace+0x250/0x310 net/ipv4/netfilter/ip_tables.c:1084 do_replace net/ipv6/netfilter/ip6_tables.c:1158 [inline] do_ip6t_set_ctl+0x374/0x418 net/ipv6/netfilter/ip6_tables.c:1644 nf_setsockopt+0x68/0xb0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x90/0xe4 net/ipv6/ipv6_sockglue.c:978 tcp_setsockopt+0x20/0x3c net/ipv4/tcp.c:4217 sock_common_setsockopt+0x1c/0x28 net/core/sock.c:3973 do_sock_setsockopt+0xa4/0x198 net/socket.c:2322 __sys_setsockopt+0x7c/0x100 net/socket.c:2347 __do_sys_setsockopt net/socket.c:2353 [inline] __se_sys_setsockopt net/socket.c:2350 [inline] __arm64_sys_setsockopt+0x28/0x40 net/socket.c:2350 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x48/0x104 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0x124 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0xa0/0xf0 arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596 ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. 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