From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 36366146A79 for ; Fri, 14 Jun 2024 08:30:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718353822; cv=none; b=uqn3dHGNSWhSIUG3ngN+GObmsfNFtpBVELiRPh92V3URRvgGzMt6Oo4PyF24XBQg1d0ZWqOXGU8Etn4qw3gjhtHfuZPtt3FND9vbQOxIUKbPrbjirrXLGGm6Q2WjaXA1NOvZvbFmNv3vkrMQpGnOweDDeXLFPOXtG+2K+JDNug4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718353822; c=relaxed/simple; bh=TIsWinQmZcpgnuKTbf25dCpfKF6hkc9UokT1TMEEntw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=CKtcscuI9BPygKf8lmo6MEEVWy8lzGsyAn8N9Np2wY7ypTQc7mGxHrSkmZeHYUssdYEENd9y26oIIDv6EAZIgILA9Fle07hE81xhSl5xQplORfJoAZqj6rI/Ca7D6OGc5X1xYUw9y5zgy42cXYbNLiVWpLAtGL5z2LzPRn2I/5g= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-37597adfab4so17440375ab.2 for ; Fri, 14 Jun 2024 01:30:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718353820; x=1718958620; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=YA1htI/BDzTzi2+wIpm6aatc4oEDGAHH/0MMFvo5/aQ=; b=fba+0UjWSvihqeMPzqH1qtSdMvzaayexliyWPtLyXFC05Qk8z2sRi4xMSi0AOkpPtN mlKMDiPtAxt2sa+qOaHFUFLZ6OMZY8/ZAwf6IGAD0uBas1A64x687iDCpkKoJKOgAHWj 5dmOBj16Y9pFcKwFGjD9HIf8Lh6ZqwNid27zZdLIk+lfeNsAZk99mnfyoVVKB5S5Dtl/ oKq093/SwjNcTPSqggC9dQl40XvmWVzmCv4GoZjr1l0zDcvkyUU7yzcdHsyd4FBU083L XR9JFjT6E3Nsj3ckjOTyqsIqQy0VCa+TyAD3LEflMAIGIHMsbmBYu1KBz6/NjenB8KaO xPdg== X-Forwarded-Encrypted: i=1; AJvYcCXEhu/RFlUIwsSAT6W5ivxO6MAedHKAAnLwkPgYuU3Pc6uDT9IJPMljCUDe+HmhgbLBBdtF6GCFMM7fySBDIPUpTkbNHP2790/4Va8L X-Gm-Message-State: AOJu0YwAZ/VlOFtseFNdDwnmlJVH4MZge0tGTLo96S/HZQwldx4L2eZj Ke1OJe1d/dXPEbqsFGojHbUMd/L7yCpRTzR+WxIKWPstTCMN4WU/u4eJg/yDDiFkx/C01lP4KMU 1+dQ8zymGB1t6IeKVBufSiurcOwAFPHtvbQo+ESnV+8at/MRKH7Bxdio= X-Google-Smtp-Source: AGHT+IHHPk88hCAzrFHq34yZJXX0iSXuLF/CyrXS2Wr8FiNbEKrKkLtjLpSaWTQcxuWkWSuxPROnnZ9kISsh7El3qVBMFKeVbWpQ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:194d:b0:375:dad7:a664 with SMTP id e9e14a558f8ab-375e1036551mr1448095ab.6.1718353820426; Fri, 14 Jun 2024 01:30:20 -0700 (PDT) Date: Fri, 14 Jun 2024 01:30:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000010b246061ad56d2e@google.com> Subject: [syzbot] [bpf?] WARNING: locking bug in __pcpu_freelist_pop 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, sdf@google.com, 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: 2ccbdf43d5e7 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13f9f9ee980000 kernel config: https://syzkaller.appspot.com/x/.config?x=81c0d76ceef02b39 dashboard link: https://syzkaller.appspot.com/bug?extid=520605fec365a2b46c6f compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-2ccbdf43.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/13cdb5bfbafa/vmlinux-2ccbdf43.xz kernel image: https://storage.googleapis.com/syzbot-assets/7a14f5d07f81/bzImage-2ccbdf43.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+520605fec365a2b46c6f@syzkaller.appspotmail.com ------------[ cut here ]------------ Looking for class "ead->lock" with key __key.1, but found a different class "&head->lock" with the same key WARNING: CPU: 2 PID: 8320 at kernel/locking/lockdep.c:932 look_up_lock_class+0x133/0x140 kernel/locking/lockdep.c:932 Modules linked in: CPU: 2 PID: 8320 Comm: syz-executor.2 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:look_up_lock_class+0x133/0x140 kernel/locking/lockdep.c:932 Code: c7 c7 20 b9 2c 8b e8 cc 53 74 f6 90 0f 0b 90 90 90 31 db eb be c6 05 f5 86 ef 04 01 90 48 c7 c7 40 bc 2c 8b e8 ae 53 74 f6 90 <0f> 0b 90 90 e9 62 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003f9f5f8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffffff9427ba10 RCX: ffffc90025be5000 RDX: 0000000000040000 RSI: ffffffff81511296 RDI: 0000000000000001 RBP: ffffffff94ae7da0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 20676e696b6f6f4c R12: ffffe8ffad032900 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff94ad8be0 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5ee3b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000031822000 CR3: 0000000028238000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: register_lock_class+0xb1/0x1230 kernel/locking/lockdep.c:1284 __lock_acquire+0x111/0x3b30 kernel/locking/lockdep.c:5014 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 ___pcpu_freelist_pop kernel/bpf/percpu_freelist.c:131 [inline] __pcpu_freelist_pop+0x18b/0x9f0 kernel/bpf/percpu_freelist.c:188 alloc_htab_elem+0x2e2/0xad0 kernel/bpf/hashtab.c:1023 htab_map_update_elem+0x390/0xde0 kernel/bpf/hashtab.c:1168 bpf_map_update_value+0x2c1/0x6c0 kernel/bpf/syscall.c:203 generic_map_update_batch+0x454/0x5f0 kernel/bpf/syscall.c:1889 bpf_map_do_batch+0x615/0x6e0 kernel/bpf/syscall.c:5197 __sys_bpf+0x18cb/0x5830 kernel/bpf/syscall.c:5752 __do_sys_bpf kernel/bpf/syscall.c:5795 [inline] __se_sys_bpf kernel/bpf/syscall.c:5793 [inline] __ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:5793 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf72f1579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5ee35ac EFLAGS: 00000292 ORIG_RAX: 0000000000000165 RAX: ffffffffffffffda RBX: 000000000000001a RCX: 0000000020000300 RDX: 0000000000000038 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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 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