bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): done starting filesystem bcachefs (loop0): missing subvolume 1 bcachefs (loop0): inconsistency detected - emergency read only at journal seq 10 bcachefs (loop0): bch2_fs_get_tree(): error mounting: error getting root inode ENOENT_bkey_type_mismatch bcachefs (loop0): shutting down bcachefs (loop0): shutdown complete bcachefs: bch2_fs_get_tree() error: ENOENT_bkey_type_mismatch loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,erasure_code,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,nocow,no_data_io 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): dropping and reconstructing all alloc info bcachefs (loop0): error validating btree node on loop0 at btree xattrs level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 node offset 0/16 bset u64s 60928: bset past end of btree node (offset 0 len 960 but written 16), exiting bcachefs (loop0): Unable to continue, halting bcachefs (loop0): flagging btree xattrs lost data bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) error reading btree root btree=xattrs level=0: btree_node_read_error, fixing invalid bkey in btree_node btree=subvolumes level=0: u64s 7 type subvolume 0:1:0 len 0 ver 0: root 4096 snapshot id 0 invalid snapshot: delete?, fixing bcachefs (loop0): scan_for_btree_nodes... bcachefs (loop0): btree node scan found 7 nodes after overwrites done bcachefs (loop0): check_topology... bcachefs (loop0): btree root xattrs unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=xattrs level=0 POS_MIN - SPOS_MAX bcachefs (loop0): bch2_get_scanned_nodes(): recovering u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 960 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 Topology repair: unreadable btree node at btree=xattrs level=0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 960 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0, fixing empty interior btree node at btree=xattrs level=1 u64s 5 type btree_ptr SPOS_MAX len 0 ver 0, fixing bcachefs (loop0): empty btree root xattrs done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): done starting filesystem slab debugfs_inode_cache start ffff88805507a3a8 pointer offset 448 size 1176 list_add corruption. next->prev should be prev (ffff88801bf009c0), but was 0000000000000000. (next=ffff88805507a568). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #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:__list_add_valid_or_report+0xf3/0x130 lib/list_debug.c:29 Code: b3 0a fd 42 80 7c 2d 00 00 74 08 48 89 df e8 e4 a9 2c fd 49 8b 56 08 48 c7 c7 e0 02 81 8c 4c 89 e6 4c 89 f1 e8 7e 8b 2a fc 90 <0f> 0b 4c 89 e7 e8 f3 b2 0a fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 b4 RSP: 0018:ffffc9000d427780 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff88805507a570 RCX: 80c5659d1a7bc300 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffff1100aa0f4ae R08: ffffffff81a1358c R09: fffffbfff1d3a69c R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: ffff88801bf009c0 R13: dffffc0000000000 R14: ffff88805507a568 R15: ffff88805507aa80 FS: 00007f6b4d5f56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b45fff000 CR3: 000000003d5bc000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add_valid include/linux/list.h:88 [inline] __list_add include/linux/list.h:150 [inline] list_add include/linux/list.h:169 [inline] inode_sb_list_add fs/inode.c:617 [inline] new_inode+0xc7/0x1d0 fs/inode.c:1195 debugfs_get_inode fs/debugfs/inode.c:72 [inline] debugfs_create_dir+0xf6/0x430 fs/debugfs/inode.c:597 bdi_debug_register mm/backing-dev.c:235 [inline] bdi_register_va+0x24f/0x770 mm/backing-dev.c:1101 super_setup_bdi_name+0xe4/0x200 fs/super.c:1873 bch2_fs_get_tree+0xce4/0x17a0 fs/bcachefs/fs.c:2242 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: 0033:0x7f6b5118e90a 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:00007f6b4d5f4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6b4d5f4ef0 RCX: 00007f6b5118e90a RDX: 00004000000058c0 RSI: 0000400000005900 RDI: 00007f6b4d5f4eb0 RBP: 00004000000058c0 R08: 00007f6b4d5f4ef0 R09: 0000000000010000 R10: 0000000000010000 R11: 0000000000000246 R12: 0000400000005900 R13: 00007f6b4d5f4eb0 R14: 0000000000005912 R15: 00004000000001c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0xf3/0x130 lib/list_debug.c:29 Code: b3 0a fd 42 80 7c 2d 00 00 74 08 48 89 df e8 e4 a9 2c fd 49 8b 56 08 48 c7 c7 e0 02 81 8c 4c 89 e6 4c 89 f1 e8 7e 8b 2a fc 90 <0f> 0b 4c 89 e7 e8 f3 b2 0a fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 b4 RSP: 0018:ffffc9000d427780 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff88805507a570 RCX: 80c5659d1a7bc300 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffff1100aa0f4ae R08: ffffffff81a1358c R09: fffffbfff1d3a69c R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: ffff88801bf009c0 R13: dffffc0000000000 R14: ffff88805507a568 R15: ffff88805507aa80 FS: 00007f6b4d5f56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b45fff000 CR3: 000000003d5bc000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400