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AJvYcCUK4TGep6o5o08AOxX6ELMHWQyJ3UM9r+93WxPynFUqwZRXMz2uv1JSJdg9VzkxTvdyfwKtJu7t+3WD/Ec=@vger.kernel.org X-Gm-Message-State: AOJu0YySqQmiOEBiK3oJ8ZdDdGcLYXwVm/TQuaU6wWQ0SUKhWIIkwqZj Fklt2CNMYHn/xP5Mugx2Uzn6lra4uNSle2WrIO0V5Nn72fMXqqfY7zgg+55y3vD4XMsicQzpQLC rbnYX2WJJtsAeP48zcKnh3cKphb41UFxwTyXXvanm40ngA7hshbpAhoY= X-Google-Smtp-Source: AGHT+IEc9btm7pI63XggMYhAvLFULbcqsnxksoNQygWIsiHcx25bmfcIm3rZKuhGGsjn/Ocl80j/ICWPpQeDWie2TTPWDmJ09r/4 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:b43:b0:3a7:1a65:2fbc with SMTP id e9e14a558f8ab-3a79afde78bmr39476025ab.23.1732288524974; Fri, 22 Nov 2024 07:15:24 -0800 (PST) Date: Fri, 22 Nov 2024 07:15:24 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6740a00c.050a0220.363a1b.0145.GAE@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in bch2_btree_root_read 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" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: 43fb83c17ba2 Merge tag 'soc-arm-6.13' of git://git.kernel..= . git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D150afae8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3Daabf8d2f67b7072= a dashboard link: https://syzkaller.appspot.com/bug?extid=3Dc4b76ec6c2d45b06e= c1e compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D1692a75f98000= 0 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=3D15965930580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7fe= b34a89c2a/non_bootable_disk-43fb83c1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8ce8ef813dfe/vmlinux-= 43fb83c1.xz kernel image: https://storage.googleapis.com/syzbot-assets/dbfeb37f6bfa/bzI= mage-43fb83c1.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/bc470092719b= /mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+c4b76ec6c2d45b06ec1e@syzkaller.appspotmail.com bcachefs (loop0): will run btree node scan invalid bkey u64s 7 type xattr 536870912:3798421620223919902:U32_MAX len 0 = ver 0: user.=06: xattr name has invalid characters: delete?, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_io.c:1743! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5326 Comm: syz-executor408 Not tainted 6.12.0-syzkaller-= 03657-g43fb83c17ba2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16= .3-2~bpo12+1 04/01/2014 RIP: 0010:__bch2_btree_root_read fs/bcachefs/btree_io.c:1743 [inline] RIP: 0010:bch2_btree_root_read+0x78d/0x7a0 fs/bcachefs/btree_io.c:1771 Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c 98 fa ff ff 4c 89 f7 e8 b6 87 e6 fd = e9 8b fa ff ff e8 6c 73 7c fd 90 0f 0b e8 64 73 7c fd 90 <0f> 0b e8 ec ab b= 2 07 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 RSP: 0018:ffffc9000ceaf3a0 EFLAGS: 00010293 RAX: ffffffff8418856c RBX: 00000000ffffffef RCX: ffff888000728000 RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 RBP: ffffc9000ceaf4e0 R08: ffffffff841883b1 R09: 1ffff920019d5e5c R10: dffffc0000000000 R11: fffff520019d5e5d R12: ffff88804384f000 R13: 0000000000023001 R14: ffff888044a01a80 R15: 0000000000000000 FS: 000055558b9ee380(0000) GS:ffff88801fc00000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff9e053fe8 CR3: 0000000042fb4000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: read_btree_roots+0x296/0x840 fs/bcachefs/recovery.c:523 bch2_fs_recovery+0x2585/0x39d0 fs/bcachefs/recovery.c:853 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1037 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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: 0033:0x7fd48bf0c9ba 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 f= f 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdbfdd4698 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffdbfdd46b0 RCX: 00007fd48bf0c9ba RDX: 00000000200058c0 RSI: 0000000020000000 RDI: 00007ffdbfdd46b0 RBP: 0000000000000004 R08: 00007ffdbfdd46f0 R09: 000000000000596c R10: 0000000000210008 R11: 0000000000000282 R12: 0000000000210008 R13: 00007ffdbfdd46f0 R14: 0000000000000003 R15: 0000000001000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_btree_root_read fs/bcachefs/btree_io.c:1743 [inline] RIP: 0010:bch2_btree_root_read+0x78d/0x7a0 fs/bcachefs/btree_io.c:1771 Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c 98 fa ff ff 4c 89 f7 e8 b6 87 e6 fd = e9 8b fa ff ff e8 6c 73 7c fd 90 0f 0b e8 64 73 7c fd 90 <0f> 0b e8 ec ab b= 2 07 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 RSP: 0018:ffffc9000ceaf3a0 EFLAGS: 00010293 RAX: ffffffff8418856c RBX: 00000000ffffffef RCX: ffff888000728000 RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 RBP: ffffc9000ceaf4e0 R08: ffffffff841883b1 R09: 1ffff920019d5e5c R10: dffffc0000000000 R11: fffff520019d5e5d R12: ffff88804384f000 R13: 0000000000023001 R14: ffff888044a01a80 R15: 0000000000000000 FS: 000055558b9ee380(0000) GS:ffff88801fc00000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff9e053fe8 CR3: 0000000042fb4000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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