From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 427544F5EA for ; Mon, 5 Feb 2024 23:40:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707176431; cv=none; b=kzuPiwNXtibuxJUtEJ8gBZiZ72B8vxaj+luIEUKDKzsR5PRxeTW1WS9sKSZ/5RHSyDVIO6So3Nef7L0tX2CO87u/obBWAsqRXneGVSw8/Vv2idXzjRgMaEXAtC9edqJ/kYdyJZnxwKf2ZC7iGaxCbM0Rf7pRQ8dgFY88mAIvg7o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707176431; c=relaxed/simple; bh=/l/BbcOUP7bWr5jYI8yoNu18RrCE0pxiWCQZSl+HmC8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=rLGDKdl5J81Egx1PbknZKHfzNq9zM+GwV/m9BG1iZ/dxvEaZ6yBYI3HDH4TaNCcep6+SIzJnzE3219H9v+n+qLXFD+7R7rzeHZWQ79j2ttQUqzGO1JmfSQAHpSOl2hQWnmWcA8wRB4G4y9TU/boS533WqwdCaaHNV8UAIDrVPS0= 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=209.85.166.199 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-il1-f199.google.com with SMTP id e9e14a558f8ab-35fc6976630so44648505ab.0 for ; Mon, 05 Feb 2024 15:40:29 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707176428; x=1707781228; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=/ngrkC+Ev5kse1bjFQ2pRxP1v852GqG+2VMvhIKcpOs=; b=CY1KgbFmj2BvQXnU9/UJGFvD5JmozAXmfRBJ2pqfgfRyk7wwcOB+6cvvx5WubuVPFy QM0Hw/JptkgLbqIXb0SR9AF7iYz3lDoPJcwsAi1Faq8eP3w78mBmzV+7YwvuKOUbeYQ+ LSjhQb3AeV8k30q0hYQu70XyxLTWNQH7nYzstPwozVfIZyISsUQixwat4YmtxqVIZQAd g3yZiq9KAQ4CfYTBcGI2djOcPIcX8y4CiV/yES582ogJwnH4NCDaAGAxjCwkG+HRyO/Y MWODnxVa+PxBpfLufEzazsjheoff+DMI4TsEwvnKgwpCwlNIonXxwNLWanyA4u1tQVfj DQkQ== X-Gm-Message-State: AOJu0Yzeg08WyzX3aCWihikome8X92s/pWfk+mk/pvhha7l2sgCjQKY3 9v5qWxKHrnMYjKcPfi8ZY8qo3E6xI5TDixbiagiVZOy+PWsBoTLZmKLGUeGUkzWKeS7Jtz/jqqn 0R4rJ1XB5illOk21qoyS0B7VLqx8RsF9uxByLg50Ju6wkxrOsKDUnu+E= X-Google-Smtp-Source: AGHT+IFEPa59otgEiS/TUoOMi9OMKmjSD0/Jbb+a85mDrxwfB6enbNsW0h2YRNaVdnPOxr/obL1YCHDE2GtJ77CNHM3Iol/0TImu Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:221d:b0:363:819c:926d with SMTP id j29-20020a056e02221d00b00363819c926dmr80890ilf.1.1707176428457; Mon, 05 Feb 2024 15:40:28 -0800 (PST) Date: Mon, 05 Feb 2024 15:40:28 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009655270610aafce1@google.com> Subject: [syzbot] [netfilter?] WARNING: suspicious RCU usage in hash_netportnet6_destroy From: syzbot To: coreteam@netfilter.org, davem@davemloft.net, edumazet@google.com, fw@strlen.de, kadlec@netfilter.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pabeni@redhat.com, pablo@netfilter.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 021533194476 Kconfig: Disable -Wstringop-overflow for GCC .. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=144caa38180000 kernel config: https://syzkaller.appspot.com/x/.config?x=f204e0b6490f4419 dashboard link: https://syzkaller.appspot.com/bug?extid=bcd44ebc3cd2db18f26c compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16329057e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b8fe7be80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0fcac44f7d25/disk-02153319.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ec3e3d0e222c/vmlinux-02153319.xz kernel image: https://storage.googleapis.com/syzbot-assets/11bfd95eb918/bzImage-02153319.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bcd44ebc3cd2db18f26c@syzkaller.appspotmail.com ============================= WARNING: suspicious RCU usage 6.8.0-rc2-syzkaller-00199-g021533194476 #0 Not tainted ----------------------------- net/netfilter/ipset/ip_set_hash_gen.h:455 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by swapper/0/0: #0: ffffffff8e130ba0 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8e130ba0 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2184 [inline] #0: ffffffff8e130ba0 (rcu_callback){....}-{0:0}, at: rcu_core+0xcfc/0x1810 kernel/rcu/tree.c:2465 stack backtrace: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.8.0-rc2-syzkaller-00199-g021533194476 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 lockdep_rcu_suspicious+0x220/0x340 kernel/locking/lockdep.c:6712 hash_netportnet6_destroy+0xf0/0x2c0 net/netfilter/ipset/ip_set_hash_gen.h:455 ip_set_destroy_set net/netfilter/ipset/ip_set_core.c:1180 [inline] ip_set_destroy_set_rcu+0x6a/0xe0 net/netfilter/ipset/ip_set_core.c:1190 rcu_do_batch kernel/rcu/tree.c:2190 [inline] rcu_core+0xd76/0x1810 kernel/rcu/tree.c:2465 __do_softirq+0x2bb/0x942 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu+0xf1/0x1c0 kernel/softirq.c:632 irq_exit_rcu+0x9/0x30 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline] RIP: 0010:acpi_safe_halt+0x20/0x30 drivers/acpi/processor_idle.c:113 Code: 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 58 ea a5 74 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d c6 5c a9 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 RSP: 0018:ffffffff8de07ca8 EFLAGS: 00000246 RAX: ffffffff8de94680 RBX: ffff88801628e864 RCX: 00000000000148c9 RDX: 0000000000000001 RSI: ffff88801628e800 RDI: ffff88801628e864 RBP: 0000000000038f78 R08: ffff8880b9436d8b R09: 1ffff11017286db1 R10: dffffc0000000000 R11: ffffffff8b5dd030 R12: ffff888015b47000 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8e885a20 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0x118/0x490 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:134 [inline] cpuidle_idle_call kernel/sched/idle.c:215 [inline] do_idle+0x374/0x5d0 kernel/sched/idle.c:312 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 65 48 8b 05 58 ea a5 mov %gs:0x74a5ea58(%rip),%rax # 0x74a5ea6a 11: 74 12: 48 f7 00 08 00 00 00 testq $0x8,(%rax) 19: 75 10 jne 0x2b 1b: 66 90 xchg %ax,%ax 1d: 0f 00 2d c6 5c a9 00 verw 0xa95cc6(%rip) # 0xa95cea 24: f3 0f 1e fa endbr64 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: c3 ret 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 37: 00 00 00 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup