loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Version upgrade required: Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.24: unwritten_extents to 1.20: directory_size running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance bcachefs (loop0): error validating btree node at btree alloc level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0 node offset 8/24 bset u64s 375 bset byte offset 184: keys out of order: u64s 11 type alloc_v4 0:32:0 len 0 ver 0 > u64s 11 type alloc_v4 0:2:0 len 0 ver 0, fixing bcachefs (loop0): btree_node_read_work: rewriting btree node at due to error btree=alloc level=0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0 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 8 min_key POS_MIN durability: 1 ptr: 0:42:0 gen 0 node offset 0/8 bset u64s 0: invalid bkey format: field 0 too large: 18446744073709551615 + 4 > 18446744073709551615 u64s 3 fields 64:4, 64:0, 32:0, 0:0, 0:0, 0:0 bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): flagging btree deleted_inodes lost data bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) error reading btree root btree=deleted_inodes level=0: btree_node_read_error, fixing bcachefs (loop0): scan_for_btree_nodes... bcachefs (loop0): btree node scan found 6 nodes after overwrites done bcachefs (loop0): check_topology... bcachefs (loop0): btree root deleted_inodes unreadable, must recover from scan no nodes found for btree deleted_inodes, continuing done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... bucket 0:26 data type btree ptr gen 0 missing in alloc btree while marking u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:633! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #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+0x9ba/0x9f0 fs/bcachefs/btree_iter.c:633 Code: 48 c7 c7 e0 3f f4 8e 48 89 ee e8 d1 76 e0 00 e9 f5 fa ff ff e8 07 c2 7e fd 90 0f 0b e8 ff c1 7e fd 90 0f 0b e8 f7 c1 7e fd 90 <0f> 0b e8 ef c1 7e fd 90 0f 0b e8 e7 c1 7e fd 90 0f 0b e8 df c1 7e RSP: 0018:ffffc9000d36e260 EFLAGS: 00010287 RAX: ffffffff84408da9 RBX: 0003ff0000000000 RCX: 0000000000100000 RDX: ffffc9000e5c2000 RSI: 00000000000607b6 RDI: 00000000000607b7 RBP: dffffc0000000000 R08: ffffffff84408630 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff2036c0f R12: ffff888053224000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880555a0033 FS: 00007f7a4cb836c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560190623018 CR3: 000000003ec36000 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:787 [inline] bch2_btree_path_traverse_one+0x108b/0x2930 fs/bcachefs/btree_iter.c:1203 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:249 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2270 [inline] bch2_btree_iter_peek_max+0xc06/0x6320 fs/bcachefs/btree_iter.c:2367 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:681 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:675 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:735 [inline] bch2_check_allocations+0x1309/0x6aa0 fs/bcachefs/btree_gc.c:1038 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:226 bch2_run_recovery_passes+0x2ad/0xa90 fs/bcachefs/recovery_passes.c:291 bch2_fs_recovery+0x265a/0x3de0 fs/bcachefs/recovery.c:936 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1041 bch2_fs_get_tree+0xd8d/0x1740 fs/bcachefs/fs.c:2203 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 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: 0033:0x7f7a4bd8e58a 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:00007f7a4cb82e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7a4cb82ef0 RCX: 00007f7a4bd8e58a RDX: 00004000000000c0 RSI: 0000400000000040 RDI: 00007f7a4cb82eb0 RBP: 00004000000000c0 R08: 00007f7a4cb82ef0 R09: 0000000000800000 R10: 0000000000800000 R11: 0000000000000246 R12: 0000400000000040 R13: 00007f7a4cb82eb0 R14: 0000000000005931 R15: 0000400000000100 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0x9ba/0x9f0 fs/bcachefs/btree_iter.c:633 Code: 48 c7 c7 e0 3f f4 8e 48 89 ee e8 d1 76 e0 00 e9 f5 fa ff ff e8 07 c2 7e fd 90 0f 0b e8 ff c1 7e fd 90 0f 0b e8 f7 c1 7e fd 90 <0f> 0b e8 ef c1 7e fd 90 0f 0b e8 e7 c1 7e fd 90 0f 0b e8 df c1 7e RSP: 0018:ffffc9000d36e260 EFLAGS: 00010287 RAX: ffffffff84408da9 RBX: 0003ff0000000000 RCX: 0000000000100000 RDX: ffffc9000e5c2000 RSI: 00000000000607b6 RDI: 00000000000607b7 RBP: dffffc0000000000 R08: ffffffff84408630 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff2036c0f R12: ffff888053224000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880555a0033 FS: 00007f7a4cb836c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560190623018 CR3: 000000003ec36000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400