From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 1417F143C69 for ; Mon, 18 Nov 2024 10:20:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731925226; cv=none; b=TCKN+R+nOv3EqYqN6NjYyjGq77Zd5Nu1xq5RIU5SGj+UgO8Hva57FgZkaMFOjV6XpsorGZkkaIus0BymC2uqaOsok8j9uLO5AdJmL1gQSVmuEvPm4d/Ql5A85nmIeiv/LPncC7epofwqfM64hyQY7m2BfPXZCHXepX1N+CB3/v8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731925226; c=relaxed/simple; bh=DfrduIENpQdNSLfxvj6S+QXiwukzrpZhuGSW1W62ccs=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=rfHRZb8edz3S4LYIUKMaOeBB/esIodGEtNzBZjn4aMz73G6jnfouVPdmnCY/K6XyIePirRlANBmHQZd//u3MOKk+QCXlfzuC/lID8ArPpnBDUZZt7UYVwsLpxeAJ6xC1yA7V/Tg8jabIaSs3yZDPcp8Jes7RZfekeKhMq71nzdg= 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=209.85.166.198 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-f198.google.com with SMTP id e9e14a558f8ab-3a3c5a6c5e1so49731095ab.2 for ; Mon, 18 Nov 2024 02:20:24 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731925224; x=1732530024; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=vWCP09PtMIrn/p6f+QrfsR2pAtcMYL/4xReyhIlXj+s=; b=Fg++wSvn0IRwGkeRY4IcyDgelU+e6f/KFU2RPptS1J+rvSXpwyq+faMGAgVtOEgQLb 1IenfzjQ5pVBuEHVb2aeBWRE7oFcLPLTTU2epEt5eUc4g0P9OYk5ohgTfw988zgrDeNA 7jyjbsQGkOSSLWkLEv6YfAPDFKYrnQMHOtovxyRmMUS9i1QmyYtK3rVj3Nh/6+1gqHSL DIRKbjmJAcPI+KVKx8dfw0VGYn9JlbTG1YuggQ2Rjrm+5CUZPIZgPtoVS0/q8Z3M1xL3 ftp8y1dej7RzDBjYeVbBcoMt/ReStBLgt2WrbJQugc6FvO6hAMNUOwlvyeLwDuLQOnAq If3A== X-Forwarded-Encrypted: i=1; AJvYcCXdtNENlTy41w8r//OxbEAjAA3f6sYuMMTm5mZ+nSzoB2t81r6nNiWgbJlvjeVyM4skgizQf9g=@vger.kernel.org X-Gm-Message-State: AOJu0YzEj679tarNG9sh4Fw1mYHUg4B9/K08pAKU74kLYNgQ3GrRRwFR 7hZLssY2I3k5DekkrUO/Dkp4ZoNITc5vXFKzijy8LMwmQcAX7DejtKgrqRSRfMH9+WTjvNuv0lx VaL5wdQ8QcqHJVEV/9xfCBlvWEr0ZiBS03aO3zIMKWnZIpUe69dSsnuU= X-Google-Smtp-Source: AGHT+IGIdl38PxnTTWZOQk+icemQSRocUVG0DNNavA387T5grlyHOAuBs2La6KqQOXYn0iF802pdvvpP7DHFG6VNXYzqIzEosJUj 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:b43:b0:3a7:158d:6510 with SMTP id e9e14a558f8ab-3a74800e163mr104599765ab.5.1731925224346; Mon, 18 Nov 2024 02:20:24 -0800 (PST) Date: Mon, 18 Nov 2024 02:20:24 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <673b14e8.050a0220.87769.0029.GAE@google.com> Subject: [syzbot] [bpf?] BUG: using smp_processor_id() in preemptible code in bpf_mem_alloc From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, martin.lau@linux.dev, memxor@gmail.com, netdev@vger.kernel.org, sdf@fomichev.me, song@kernel.org, syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 379d5ee624ed Merge branch 'bpf-range_tree-for-bpf-arena' git tree: bpf-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=115ecb5f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=d2aeec8c0b2e420c dashboard link: https://syzkaller.appspot.com/bug?extid=fd2873203c2ed428828a 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=12636ce8580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f0f4c0580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e83cf63a68cf/disk-379d5ee6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ff1f89f228ad/vmlinux-379d5ee6.xz kernel image: https://storage.googleapis.com/syzbot-assets/8a715c466ecd/bzImage-379d5ee6.xz The issue was bisected to: commit b795379757eb054925fbb6783559c86f01c1a614 Author: Alexei Starovoitov Date: Fri Nov 8 02:56:15 2024 +0000 bpf: Introduce range_tree data structure and use it in bpf arena bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10b2ab5f980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=12b2ab5f980000 console output: https://syzkaller.appspot.com/x/log.txt?x=14b2ab5f980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fd2873203c2ed428828a@syzkaller.appspotmail.com Fixes: b795379757eb ("bpf: Introduce range_tree data structure and use it in bpf arena") BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor373/5838 caller is bpf_mem_alloc+0x117/0x220 kernel/bpf/memalloc.c:903 CPU: 1 UID: 0 PID: 5838 Comm: syz-executor373 Not tainted 6.12.0-rc7-syzkaller-g379d5ee624ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49 bpf_mem_alloc+0x117/0x220 kernel/bpf/memalloc.c:903 range_tree_set+0x971/0x1830 kernel/bpf/range_tree.c:238 arena_map_alloc+0x36f/0x440 kernel/bpf/arena.c:137 map_create+0x946/0x11c0 kernel/bpf/syscall.c:1441 __sys_bpf+0x6d1/0x810 kernel/bpf/syscall.c:5741 __do_sys_bpf kernel/bpf/syscall.c:5866 [inline] __se_sys_bpf kernel/bpf/syscall.c:5864 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5864 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5cb29a1329 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffee3bcaa18 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ffee3bcabf8 RCX: 00007f5cb29a1329 RDX: 0000000000000048 RSI: 0000000020003940 RDI: 0000000000000000 RBP: 00007f5cb2a14610 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffee3bcabe8 R14: 0000000000000001 R15: 0000000000000001