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AJvYcCUjl4P+5EAnGOnxtgRx3DU5tKBbetg3cev/f3rLhmV0GBKKTccalwNwOp3ioD+pbQBHwSAKBSxva6gBBSo=@vger.kernel.org X-Gm-Message-State: AOJu0YzXCoUoFVo9POlCEsRfvCd/jkrmQjdJX8C5qnlBzZn1q4MUpLQN y8N3nrxNY01ISFgeHS5kid/UmFAokckPTLj4wasad9U+anYMitIbuN3Ydc/R3UNOzt5WQna6YzE PMJ55KyaDM0nNfaVHxoZwi0jftvtujrASDY8NYFyrGT0OGIC49rAAaP4= X-Google-Smtp-Source: AGHT+IHQx13L5JlX4aNY1LnhMf25cy0+Zv2fe1fZJ3rOjqe9fIzLX+jsYaXgUwLOZB/arcRZl47pCI8sCzq0EPVC8kK2GW59dXOQ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1745:b0:3a0:480c:6ac4 with SMTP id e9e14a558f8ab-3a6f1a481b3mr65185515ab.22.1731167010493; Sat, 09 Nov 2024 07:43:30 -0800 (PST) Date: Sat, 09 Nov 2024 07:43:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <672f8322.050a0220.320e73.0316.GAE@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in __bch2_btree_node_hash_insert From: syzbot To: kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, terrelln@fb.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 850f22c42f4b Add linux-next specific files for 20241105 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=16d656a7980000 kernel config: https://syzkaller.appspot.com/x/.config?x=20c0926a86d94a8 dashboard link: https://syzkaller.appspot.com/bug?extid=19c1a30221401d741bc2 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=10198e30580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12fdb587980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2f4977b60e81/disk-850f22c4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5574d3bf40f3/vmlinux-850f22c4.xz kernel image: https://storage.googleapis.com/syzbot-assets/013dbea598ca/bzImage-850f22c4.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/442d7ae00d08/mount_0.gz The issue was bisected to: commit bf4baaa087e2be0279991f1dbf9acaa7a4c9148c Author: Kent Overstreet Date: Sat Oct 5 21:37:02 2024 +0000 bcachefs: Fix lockdep splat in bch2_accounting_read bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=122c36a7980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=112c36a7980000 console output: https://syzkaller.appspot.com/x/log.txt?x=162c36a7980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+19c1a30221401d741bc2@syzkaller.appspotmail.com Fixes: bf4baaa087e2 ("bcachefs: Fix lockdep splat in bch2_accounting_read") parent: u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 child: u64s 11 type btree_ptr_v2 U64_MAX:18374686479671623680:50331647 len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0, fixing bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=xattrs level=0 U64_MAX:18374686479671623680:50331648 - SPOS_MAX bcachefs (loop0): set_node_max(): u64s 11 type btree_ptr_v2 U64_MAX:18374686479671623680:50331647 len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 -> SPOS_MAX ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_cache.c:280! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 5854 Comm: syz-executor700 Not tainted 6.12.0-rc6-next-20241105-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__bch2_btree_node_hash_insert+0x12ed/0x1310 fs/bcachefs/btree_cache.c:280 Code: f6 fd e9 9d f5 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c f2 f7 ff ff 48 89 df e8 2e d5 f6 fd e9 e5 f7 ff ff e8 04 74 8c fd 90 <0f> 0b e8 fc 73 8c fd 90 0f 0b e8 f4 73 8c fd 90 0f 0b e8 1c 6c bc RSP: 0018:ffffc90003d36640 EFLAGS: 00010293 RAX: ffffffff840963bc RBX: ffff8880282a0228 RCX: ffff888034390000 RDX: 0000000000000000 RSI: ffff8880282a0000 RDI: ffff888075b81a90 RBP: ffffc90003d36770 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000001f001 R12: 1ffff11005054045 R13: dffffc0000000000 R14: ffff888075b81a90 R15: ffff8880282a0000 FS: 0000555559c71380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055792096e558 CR3: 00000000758cc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: set_node_max+0x542/0x710 fs/bcachefs/btree_gc.c:188 btree_repair_node_end fs/bcachefs/btree_gc.c:301 [inline] bch2_btree_repair_topology_recurse+0x5a7c/0x6c10 fs/bcachefs/btree_gc.c:427 bch2_check_topology+0x6d4/0xba0 fs/bcachefs/btree_gc.c:554 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:216 bch2_run_recovery_passes+0x290/0x9f0 fs/bcachefs/recovery_passes.c:286 bch2_fs_recovery+0x25cc/0x39b0 fs/bcachefs/recovery.c:893 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1037 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2186 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: 0033:0x7fa63b34497a 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:00007fff4e112dd8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fff4e112df0 RCX: 00007fa63b34497a RDX: 0000000020000180 RSI: 0000000020000000 RDI: 00007fff4e112df0 RBP: 0000000000000004 R08: 00007fff4e112e30 R09: 00000000000059b6 R10: 0000000000800008 R11: 0000000000000282 R12: 0000000000800008 R13: 00007fff4e112e30 R14: 0000000000000003 R15: 0000000001000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_btree_node_hash_insert+0x12ed/0x1310 fs/bcachefs/btree_cache.c:280 Code: f6 fd e9 9d f5 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c f2 f7 ff ff 48 89 df e8 2e d5 f6 fd e9 e5 f7 ff ff e8 04 74 8c fd 90 <0f> 0b e8 fc 73 8c fd 90 0f 0b e8 f4 73 8c fd 90 0f 0b e8 1c 6c bc RSP: 0018:ffffc90003d36640 EFLAGS: 00010293 RAX: ffffffff840963bc RBX: ffff8880282a0228 RCX: ffff888034390000 RDX: 0000000000000000 RSI: ffff8880282a0000 RDI: ffff888075b81a90 RBP: ffffc90003d36770 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000001f001 R12: 1ffff11005054045 R13: dffffc0000000000 R14: ffff888075b81a90 R15: ffff8880282a0000 FS: 0000555559c71380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055792096e558 CR3: 00000000758cc000 CR4: 00000000003526f0 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection 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