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 1.13: inode_has_child_snapshots 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 invalid bkey u64s 7 type xattr 536870912:9073845653939145521:U32_MAX len 0 ver 0: user.: value too big (2 > 1): delete?, fixing invalid bkey u64s 11 type alloc_v4 0:15:0 len 0 ver 0: gen 0 oldest_gen 0 data_type free journal_seq 1 need_discard 1 need_inc_gen 1 dirty_sectors 256 stripe_sectors 0 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 1 fragmentation 0 bp_start 8 empty data type free but have data 0.256.0 0: delete?, fixing 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 0:15 gen 0 has wrong data_type: got free, should be journal, fixing bucket 0:15 gen 0 data type journal has wrong dirty_sectors: got 0, should be 256, fixing done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... done bcachefs (loop0): check_alloc_info... done bcachefs (loop0): check_lrus... done bcachefs (loop0): check_btree_backpointers... done bcachefs (loop0): check_backpointers_to_extents... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:2929! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #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_trans_node_iter_init+0x61d/0x630 fs/bcachefs/btree_iter.c:2929 Code: 89 d9 80 e1 07 fe c1 38 c1 0f 8c aa fd ff ff 48 89 df e8 b6 35 e3 fd e9 9d fd ff ff e8 4c 77 79 fd 90 0f 0b e8 44 77 79 fd 90 <0f> 0b e8 3c 77 79 fd 90 0f 0b e8 c4 c3 ab 07 0f 1f 40 00 90 90 90 RSP: 0018:ffffc9000d4b6740 EFLAGS: 00010293 RAX: ffffffff841b62dc RBX: 0000000000000005 RCX: ffff8880001aa440 RDX: 0000000000000000 RSI: 000000000000000d RDI: 0000000000000005 RBP: ffffc9000d4b6878 R08: ffffffff841b60ab R09: 2000000100000000 R10: 0000000000000018 R11: 0000000020000001 R12: dffffc0000000000 R13: 000000000000000d R14: 0000000000000000 R15: 0000000000000000 FS: 00007f4556b156c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b60bd85000 CR3: 0000000040568000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> bch2_backpointer_get_node+0x2c6/0x880 fs/bcachefs/backpointers.c:358 bch2_backpointer_get_key+0x61c/0x970 fs/bcachefs/backpointers.c:335 check_one_backpointer fs/bcachefs/backpointers.c:964 [inline] bch2_check_backpointers_to_extents_pass fs/bcachefs/backpointers.c:1003 [inline] bch2_check_backpointers_to_extents+0x1444/0x2430 fs/bcachefs/backpointers.c:1049 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:185 bch2_run_recovery_passes+0x387/0x870 fs/bcachefs/recovery_passes.c:232 bch2_fs_recovery+0x25cc/0x39c0 fs/bcachefs/recovery.c:861 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1036 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: 0033:0x7f4555d7feba 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:00007f4556b14e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4556b14ef0 RCX: 00007f4555d7feba RDX: 00000000200058c0 RSI: 0000000020000040 RDI: 00007f4556b14eb0 RBP: 00000000200058c0 R08: 00007f4556b14ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000040 R13: 00007f4556b14eb0 R14: 0000000000005909 R15: 0000000020000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_trans_node_iter_init+0x61d/0x630 fs/bcachefs/btree_iter.c:2929 Code: 89 d9 80 e1 07 fe c1 38 c1 0f 8c aa fd ff ff 48 89 df e8 b6 35 e3 fd e9 9d fd ff ff e8 4c 77 79 fd 90 0f 0b e8 44 77 79 fd 90 <0f> 0b e8 3c 77 79 fd 90 0f 0b e8 c4 c3 ab 07 0f 1f 40 00 90 90 90 RSP: 0018:ffffc9000d4b6740 EFLAGS: 00010293 RAX: ffffffff841b62dc RBX: 0000000000000005 RCX: ffff8880001aa440 RDX: 0000000000000000 RSI: 000000000000000d RDI: 0000000000000005 RBP: ffffc9000d4b6878 R08: ffffffff841b60ab R09: 2000000100000000 R10: 0000000000000018 R11: 0000000020000001 R12: dffffc0000000000 R13: 000000000000000d R14: 0000000000000000 R15: 0000000000000000 FS: 00007f4556b156c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e0a2359078 CR3: 0000000040568000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400