loop0: detected capacity change from 0 to 32768 bcachefs (/dev/loop0): error reading default superblock: checksum error, type crc32c_nonzero: got 1cd56937 should be 00000000 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,journal_flush_disabled,move_ios_in_flight=80,nojournal_transaction_names,reconstruct_alloc,no_data_io bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.13: inode_has_child_snapshots running recovery passes: check_allocations,check_inodes bcachefs (loop0): dropping and reconstructing all alloc info bcachefs (loop0): error validating btree node on loop0 at btree deleted_inodes level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1db8f60c84bb244c written 65535 min_key R 0:0:U32_MAX durability: 1 ptr: 0:42:0 gen 0 node offset 8/65535: btree node data missing: expected 65535 sectors, found 8, fixing bcachefs (loop0): btree_node_read_work: rewriting btree node at btree=deleted_inodes level=0 SPOS_MAX due to error bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 9aa2895aefce4bdf written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:631! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted 6.12.0-syzkaller-00971-g158f238aa69d #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_path_level_init+0x9ca/0x9f0 fs/bcachefs/btree_iter.c:631 Code: f5 fa ff ff e8 b7 69 7b fd 90 0f 0b e8 af 69 7b fd 90 0f 0b e8 a7 69 7b fd 90 0f 0b e8 9f 69 7b fd 90 0f 0b e8 97 69 7b fd 90 <0f> 0b e8 8f 69 7b fd 90 0f 0b e8 87 69 7b fd 90 0f 0b e8 7f 69 7b RSP: 0018:ffffc9000cfb61e0 EFLAGS: 00010246 RAX: ffffffff84198849 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc9000da21000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: dffffc0000000000 R08: ffffffff8419809c R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203afe6 R12: ffff888043914800 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888052c40033 FS: 00007f666ad8c6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9975a4e000 CR3: 00000000427d6000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btree_path_lock_root fs/bcachefs/btree_iter.c:769 [inline] bch2_btree_path_traverse_one+0x10de/0x2940 fs/bcachefs/btree_iter.c:1183 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2210 [inline] bch2_btree_iter_peek_upto+0xb58/0x70e0 fs/bcachefs/btree_iter.c:2310 bch2_btree_iter_peek_upto_type fs/bcachefs/btree_iter.h:685 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:670 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:729 [inline] bch2_check_allocations+0x1abe/0x7070 fs/bcachefs/btree_gc.c:1133 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:191 bch2_run_recovery_passes+0x3a7/0x880 fs/bcachefs/recovery_passes.c:244 bch2_fs_recovery+0x25cc/0x39d0 fs/bcachefs/recovery.c:861 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: 0033:0x7f6669f7fefa Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f666ad8be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f666ad8bef0 RCX: 00007f6669f7fefa RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 00007f666ad8beb0 RBP: 00000000200000c0 R08: 00007f666ad8bef0 R09: 0000000000808016 R10: 0000000000808016 R11: 0000000000000246 R12: 0000000020000000 R13: 00007f666ad8beb0 R14: 000000000000592a R15: 0000000020000180 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0x9ca/0x9f0 fs/bcachefs/btree_iter.c:631 Code: f5 fa ff ff e8 b7 69 7b fd 90 0f 0b e8 af 69 7b fd 90 0f 0b e8 a7 69 7b fd 90 0f 0b e8 9f 69 7b fd 90 0f 0b e8 97 69 7b fd 90 <0f> 0b e8 8f 69 7b fd 90 0f 0b e8 87 69 7b fd 90 0f 0b e8 7f 69 7b RSP: 0018:ffffc9000cfb61e0 EFLAGS: 00010246 RAX: ffffffff84198849 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc9000da21000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: dffffc0000000000 R08: ffffffff8419809c R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203afe6 R12: ffff888043914800 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888052c40033 FS: 00007f666ad8c6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c3d228a0d8 CR3: 00000000427d6000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400