From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 47E3714F9D9 for ; Mon, 30 Sep 2024 06:01:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727676085; cv=none; b=XM9KbHmJqZMmFzUBZQDSpASlpnBXWmPG4o1a8lwxsi3q58IyBlqqW32Aij6v3HtqqRWtyGmABYrj8WYiCVHupSmdKPKHp/R+W1XNmvvDQXVQhdon53NgehAn35jyrzMaMZegoz3/PkAg4s2WTOkAXNHS0nfnFM/QJfBge0tXCkU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727676085; c=relaxed/simple; bh=Y3w5ue+zd/hBfjKx82ouX8nKDI1149V195JO2JSr+o8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Sx7H9J54XL7rhdMeHxub3UriDwAWKhMiaQ/44kqm+7jDfYYBpszhu7SmmRRCOSszGv08arKIGCLcjippL8CiymZBshy400Kwgl1UEfzxPfFfzfKK3mF1Fv+0A0cj90Lem1Yd1wLLMFvibQzlR0m0/Vx2+tfZFq9bFwWPc2VhsQA= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3a3440fc2d3so33510855ab.2 for ; Sun, 29 Sep 2024 23:01:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727676083; x=1728280883; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=4bsoNy7ocIyyBmhMtBRXlLymTcT0fJP/3FWknlM+zqQ=; b=uKd5rQp1yBybh0kjs9gHMaFZVSE1TzJMRTZU41hafjmOqbXVjduP0zuLNFACdfddnE YO/0/+5VPIp3rwseAQ98JxFY5RkE0nMuC5dgMUcxLX0Kseo2jlmIzummzHp8axxmydwp SEbG9s8q0wXXNfUBggM2u7PrB/Ykyq+z/F973IDuc+d4KoXmsQQCOiMoB8GMn/TncvY4 +KRpON89b17FeXzFl6NI55zNlgbHmbf+OmUQ96un5skZbWLFXl/IpKTXgPWK++4aIJ7Q jUrxSBHWo6WQlEGuceK+8TkcewtfY6SNXD3gHPU8WX++zw0raZTTXB+shc0uinC5Umqf e7uw== X-Forwarded-Encrypted: i=1; AJvYcCW4osElf8T0KMmnSUqiVkBxJcUvgHsJheRo8sMipNScDuJGgoZxOkE1xTU9gDxVSOWlIP9llRyRi5yKyMs=@vger.kernel.org X-Gm-Message-State: AOJu0YwcCflOtL9HiCBYt/aLmnJsgV5wfGAYIlunkGg3PfJMho7s+PG+ vMRsPGfcOdKG7siaF/eoD0pAeCDoi+XKEpDvEMWOsq658xsJkxBMBvrBTzuiUoZ54A1jlBw5bkt 8XBpEgaDAF321dZh2Y/mADor8QER0pYy3/fzAMkauGxqGTRSGXO0tNRk= X-Google-Smtp-Source: AGHT+IGSuzJbE9aTHAqrdO62zT+nSlitoUvEaUjb9cVdyGtMZNyKZv/55aarOBbKXbgPAofnXyBHHmN36idQA9Qbg/CKdOajdH77 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1fe3:b0:3a3:3a77:9192 with SMTP id e9e14a558f8ab-3a3451c2274mr82190785ab.26.1727676083445; Sun, 29 Sep 2024 23:01:23 -0700 (PDT) Date: Sun, 29 Sep 2024 23:01:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66fa3eb3.050a0220.6bad9.0030.GAE@google.com> Subject: [syzbot] [bcachefs?] general protection fault in btree_node_iter_and_journal_peek From: syzbot To: kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: abf2050f51fd Merge tag 'media/v6.12-1' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=112f0a80580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bc30a30374b0753 dashboard link: https://syzkaller.appspot.com/bug?extid=005ef9aa519f30d97657 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 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-abf2050f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2179ebeade58/vmlinux-abf2050f.xz kernel image: https://storage.googleapis.com/syzbot-assets/f05289b5cf7c/bzImage-abf2050f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+005ef9aa519f30d97657@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-syzkaller-09959-gabf2050f51fd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bcachefs_write_ref bch2_do_invalidates_work RIP: 0010:bch2_bkey_buf_reassemble fs/bcachefs/bkey_buf.h:27 [inline] RIP: 0010:btree_node_iter_and_journal_peek+0x260/0x1010 fs/bcachefs/btree_iter.c:886 Code: 4c 24 18 45 89 f0 50 53 41 51 e8 2b b3 00 00 48 83 c4 18 4c 89 ff e8 8f 87 00 00 48 89 c3 49 89 d7 48 c1 e8 03 48 89 44 24 18 <42> 0f b6 04 28 84 c0 4c 89 ea 0f 85 d1 0c 00 00 48 89 5c 24 38 44 RSP: 0018:ffffc900003a6ce0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000000ff RDI: ffffc900003a6e94 RBP: ffffc900003a6f70 R08: ffffc900003a6e93 R09: 0000000000000000 R10: ffffc900003a6e80 R11: fffff52000074dd3 R12: ffffc900003a6ee0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b220af5258 CR3: 00000000408ba000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btree_path_down fs/bcachefs/btree_iter.c:914 [inline] bch2_btree_path_traverse_one+0x1981/0x2940 fs/bcachefs/btree_iter.c:1169 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2197 [inline] bch2_btree_iter_peek_upto+0xb58/0x6f00 fs/bcachefs/btree_iter.c:2297 next_lru_key fs/bcachefs/alloc_background.c:2084 [inline] bch2_do_invalidates_work+0x8d5/0x2710 fs/bcachefs/alloc_background.c:2118 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_bkey_buf_reassemble fs/bcachefs/bkey_buf.h:27 [inline] RIP: 0010:btree_node_iter_and_journal_peek+0x260/0x1010 fs/bcachefs/btree_iter.c:886 Code: 4c 24 18 45 89 f0 50 53 41 51 e8 2b b3 00 00 48 83 c4 18 4c 89 ff e8 8f 87 00 00 48 89 c3 49 89 d7 48 c1 e8 03 48 89 44 24 18 <42> 0f b6 04 28 84 c0 4c 89 ea 0f 85 d1 0c 00 00 48 89 5c 24 38 44 RSP: 0018:ffffc900003a6ce0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000000ff RDI: ffffc900003a6e94 RBP: ffffc900003a6f70 R08: ffffc900003a6e93 R09: 0000000000000000 R10: ffffc900003a6e80 R11: fffff52000074dd3 R12: ffffc900003a6ee0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e13f7f96e CR3: 00000000408ba000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 24 18 rex.WR and $0x18,%al 3: 45 89 f0 mov %r14d,%r8d 6: 50 push %rax 7: 53 push %rbx 8: 41 51 push %r9 a: e8 2b b3 00 00 call 0xb33a f: 48 83 c4 18 add $0x18,%rsp 13: 4c 89 ff mov %r15,%rdi 16: e8 8f 87 00 00 call 0x87aa 1b: 48 89 c3 mov %rax,%rbx 1e: 49 89 d7 mov %rdx,%r15 21: 48 c1 e8 03 shr $0x3,%rax 25: 48 89 44 24 18 mov %rax,0x18(%rsp) * 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 4c 89 ea mov %r13,%rdx 34: 0f 85 d1 0c 00 00 jne 0xd0b 3a: 48 89 5c 24 38 mov %rbx,0x38(%rsp) 3f: 44 rex.R --- 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