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,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 on loop0 at btree extents level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c6c25c03258c59c5 written 16 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0 node offset 8/16 bset u64s 65329: bset past end of btree node (offset 8 len 1024 but written 16), shutting down bcachefs (loop0): inconsistency detected - emergency read only at journal seq 10 bcachefs (loop0): flagging btree extents 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=extents level=0: btree_node_read_error, fixing 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): scan_for_btree_nodes... bcachefs (loop0): btree node scan found 7 nodes after overwrites done bcachefs (loop0): check_topology... bcachefs (loop0): btree root extents unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=extents 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 c6c25c03258c59c5 written 1032 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0 Topology repair: unreadable btree node at btree=extents level=0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c6c25c03258c59c5 written 1032 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0, fixing empty interior btree node at btree=extents level=1 u64s 5 type btree_ptr SPOS_MAX len 0 ver 0, fixing bcachefs (loop0): empty btree root extents 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... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/bset.c:1308! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #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_node_iter_init+0x4272/0x4280 fs/bcachefs/bset.c:1308 Code: fd 90 0f 0b e8 bf 9e 84 fd 90 0f 0b e8 b7 9e 84 fd 90 0f 0b e8 af 9e 84 fd 90 0f 0b e8 a7 9e 84 fd 90 0f 0b e8 9f 9e 84 fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d3e5de0 EFLAGS: 00010287 RAX: ffffffff843ace21 RBX: 0000000000000001 RCX: 0000000000100000 RDX: ffffc9000e72a000 RSI: 000000000005477a RDI: 000000000005477b RBP: ffffc9000d3e6050 R08: ffffffff843a8fc6 R09: 0000000000000000 R10: ffffc9000d3e5f70 R11: fffff52001a7cbf1 R12: ffff888045620040 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f567c93c6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055cf79fbd0c8 CR3: 0000000043f06000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __btree_path_level_init fs/bcachefs/btree_iter.c:617 [inline] bch2_btree_path_level_init+0x4d2/0x9f0 fs/bcachefs/btree_iter.c:637 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_reflink_start+0x461/0xa50 fs/bcachefs/reflink.c:828 bch2_check_allocations+0x680/0x6aa0 fs/bcachefs/btree_gc.c:1027 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:937 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1030 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: 0033:0x7f567bb8e54a 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:00007f567c93be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f567c93bef0 RCX: 00007f567bb8e54a RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007f567c93beb0 RBP: 0000000020000000 R08: 00007f567c93bef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000040 R13: 00007f567c93beb0 R14: 000000000000593f R15: 0000000020000380 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_node_iter_init+0x4272/0x4280 fs/bcachefs/bset.c:1308 Code: fd 90 0f 0b e8 bf 9e 84 fd 90 0f 0b e8 b7 9e 84 fd 90 0f 0b e8 af 9e 84 fd 90 0f 0b e8 a7 9e 84 fd 90 0f 0b e8 9f 9e 84 fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d3e5de0 EFLAGS: 00010287 RAX: ffffffff843ace21 RBX: 0000000000000001 RCX: 0000000000100000 RDX: ffffc9000e72a000 RSI: 000000000005477a RDI: 000000000005477b RBP: ffffc9000d3e6050 R08: ffffffff843a8fc6 R09: 0000000000000000 R10: ffffc9000d3e5f70 R11: fffff52001a7cbf1 R12: ffff888045620040 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f567c93c6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055cf79fbd0c8 CR3: 0000000043f06000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400