From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) (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 A1D66289346 for ; Thu, 3 Jul 2025 05:15:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751519730; cv=none; b=IIDosoyVyT1/IMG9X+1ByWaTO43jjWWc539btXSAzfViqJixv8pgoiGZ5qn/41sRV/q7My+bNZg+nUXgZv0njWPB8Ozo+0fxJ/pn+og631PgNvv3xDy40mmA0kPUwgzWtRCfIciNTUwdvEorOo1GZukA4nG0uR2SZ4Z6C09pVdw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751519730; c=relaxed/simple; bh=0LlX4jHh4R7b19i3jJjGb8y10eDDGSNistW34BSRzz0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=szSGj61NK8iGd0U4pgWht0c2Qhu7j+v/4lhIHoSYfmJVQ5yPHjstPC4Izbcs2Gq7xmVYT0NGCpo15qoOYvyTeKH3jcd3uGpIaTfGRjTmHX1W8jRTZ2Ia4eG/gyriuIxajF1Cj1onbNMOkO4qzmSuDv83G87imHOevqtC7xJpwWE= 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=209.85.166.78 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-io1-f78.google.com with SMTP id ca18e2360f4ac-86cfe68a8bbso528573139f.1 for ; Wed, 02 Jul 2025 22:15:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751519728; x=1752124528; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=NqjtuX+DTXfHvIASS5HImtIn8N4XEk7+RtcSzx0flnY=; b=bGozFwHNGHWUZHNd/F8Kfupf66d8c3HDUHzv3lq/+u0TfUZaq1Ym5HnZjtdG2dBr3l 64FQiUioCHTbEafTbFCyy9a+vna1j3d1bkGrGhfhyt43Ob9DDF7Hrspc0NfXnwaa/dX2 UBJ62KYDurQ8b7L71DbIr2FTGwAqqBb8wtkSHXvI9gL4dtu5cgAFwyZrAslASjBfjnNu px8Vbbr8a/wq3D01r4jrXmRSCNrL6d6oxv+5hM8O6GVH1eobEyCYmfXU7P3j2khmq0OG 6Y4oSgm5sMiMidHXNJr7D4Vh8skgfm6AwVwViv8pBFclul9gKhfUKJkBO3cElFfAnz9+ HdZw== X-Forwarded-Encrypted: i=1; AJvYcCWzq4QKj/NAntHU5OMQVbWL8zOsbFOiM41G1StPUYMvSKURAo6ePkOnAa+/Tioz4kebvH8kyubgv5WyIHBmEA==@vger.kernel.org X-Gm-Message-State: AOJu0YzCyFxdI+tWlL9Udi6Lotbry9cyo2S1ChGzi7GAo3ZOOIamCwCB HKZygWx9RZgcPFPcquTwUHAvNa2IWpbeeZ6C+jSy52BiC8Py6hf7Ff+FaOAbHvUqWhhxCa2Ynjl X3kdFvSkPMsu3eG/BIsRUC9nFlwd2unIjNFlcG+GVSb6C6pHcpSy1b1VXCvM= X-Google-Smtp-Source: AGHT+IE9Vohn9s6TZ/72oH4vZz/0xjaDmlwKigjhR4gQwr6x2rew0KXK0VYh6CXDCoYDNTRlPkYiIP9UT85OKnCwxxWBJbuTlVb1 Precedence: bulk X-Mailing-List: linux-bcachefs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:640a:b0:873:47fb:a455 with SMTP id ca18e2360f4ac-876d1d91893mr296855939f.2.1751519727797; Wed, 02 Jul 2025 22:15:27 -0700 (PDT) Date: Wed, 02 Jul 2025 22:15:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <686611ef.a70a0220.5d25f.0833.GAE@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in __btree_trans_update_by_path 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: 50c8770a42fa Add linux-next specific files for 20250702 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=1191aebc580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d831c9dfe03f77ec dashboard link: https://syzkaller.appspot.com/bug?extid=8deb6ff4415db67a9f18 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1311d3d4580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1770f982580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/eb40fda2e0ca/disk-50c8770a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cba4d214940c/vmlinux-50c8770a.xz kernel image: https://storage.googleapis.com/syzbot-assets/4b23ed647866/bzImage-50c8770a.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/cd313604f9e1/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8deb6ff4415db67a9f18@syzkaller.appspotmail.com while marking u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1db8f60c84bb244c written 8 min_key POS_MIN durability: 1 ptr: 0:42:0 gen 0, fixing done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_update.c:339! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5842 Comm: syz-executor286 Not tainted 6.16.0-rc4-next-20250702-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__btree_trans_update_by_path+0x1fd3/0x2010 fs/bcachefs/btree_update.c:339 Code: f6 ff ff 48 8b 7c 24 28 e8 ca dd f5 fd 48 ba 00 00 00 00 00 fc ff df e9 3d f6 ff ff e8 a6 c9 91 fd 90 0f 0b e8 9e c9 91 fd 90 <0f> 0b e8 96 c9 91 fd 90 0f 0b e8 8e c9 91 fd 90 0f 0b e8 86 c9 91 RSP: 0018:ffffc9000413ea18 EFLAGS: 00010293 RAX: ffffffff842e0b42 RBX: 0000000000008542 RCX: ffff88802ea71e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888031194010 R08: ffffffff84518baa R09: 0000000000000002 R10: 0000000000000003 R11: 0000000000000000 R12: ffff888074e00000 R13: ffff888031194000 R14: 0000000000000088 R15: 1ffff11006232802 FS: 000055555e045380(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e03c677168 CR3: 0000000078920000 CR4: 00000000003526f0 Call Trace: bch2_trans_update_by_path fs/bcachefs/btree_update.c:454 [inline] bch2_trans_update_ip+0x8f6/0x1f00 fs/bcachefs/btree_update.c:546 bch2_trans_update fs/bcachefs/btree_update.h:123 [inline] bch2_journal_replay_key+0x4c1/0xb50 fs/bcachefs/recovery.c:311 bch2_journal_replay+0x171d/0x2630 fs/bcachefs/recovery.c:396 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:484 [inline] __bch2_run_recovery_passes+0x392/0x1010 fs/bcachefs/recovery_passes.c:539 bch2_run_recovery_passes+0x184/0x210 fs/bcachefs/recovery_passes.c:610 bch2_fs_recovery+0x2690/0x3a50 fs/bcachefs/recovery.c:1005 bch2_fs_start+0xaaf/0xda0 fs/bcachefs/super.c:1212 bch2_fs_get_tree+0xb39/0x1540 fs/bcachefs/fs.c:2488 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f878cb709ba Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ffc9f662588 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc9f6625a0 RCX: 00007f878cb709ba RDX: 00002000000000c0 RSI: 0000200000000080 RDI: 00007ffc9f6625a0 RBP: 0000200000000080 R08: 00007ffc9f6625e0 R09: 00000000000059b9 R10: 0000000000818001 R11: 0000000000000282 R12: 00002000000000c0 R13: 0000000000000004 R14: 0000000000000003 R15: 00007ffc9f6625e0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__btree_trans_update_by_path+0x1fd3/0x2010 fs/bcachefs/btree_update.c:339 Code: f6 ff ff 48 8b 7c 24 28 e8 ca dd f5 fd 48 ba 00 00 00 00 00 fc ff df e9 3d f6 ff ff e8 a6 c9 91 fd 90 0f 0b e8 9e c9 91 fd 90 <0f> 0b e8 96 c9 91 fd 90 0f 0b e8 8e c9 91 fd 90 0f 0b e8 86 c9 91 RSP: 0018:ffffc9000413ea18 EFLAGS: 00010293 RAX: ffffffff842e0b42 RBX: 0000000000008542 RCX: ffff88802ea71e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888031194010 R08: ffffffff84518baa R09: 0000000000000002 R10: 0000000000000003 R11: 0000000000000000 R12: ffff888074e00000 R13: ffff888031194000 R14: 0000000000000088 R15: 1ffff11006232802 FS: 000055555e045380(0000) GS:ffff888125d1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f8b3a1796 CR3: 0000000078920000 CR4: 00000000003526f0 --- 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