loop0: detected capacity change from 0 to 4096 EXT4-fs (loop0): couldn't mount as ext3 due to feature incompatibilities loop0: detected capacity change from 0 to 32768 bcachefs (/dev/loop0): error validating superblock: Invalid superblock section members_v2: device 0: bucket size 5 smaller than block size 8 members_v2 (size 152): Device: 0 Label: (bad disk labels section) UUID: 7af6772b-00de-4159-84cd-1faead05aceb Size: 327680 read errors: 0 write errors: 0 checksum errors: 0 seqread iops: 0 seqwrite iops: 0 randread iops: 0 randwrite iops: 0 Bucket size: 2560 First bucket: 0 Buckets: 128 Last mount: 1714618368 Last superblock write: 42 State: rw Data allowed: journal,btree,user Has data: journal,btree,user Btree allocated bitmap blocksize:1 Btree allocated bitmap: 000000000000000000000100001000001001100000000000 bcachefs: bch2_fs_get_tree() error: invalid_sb_members 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 bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... 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: 5328 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #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 06 33 e3 fd e9 9d fd ff ff e8 5c 6d 79 fd 90 0f 0b e8 54 6d 79 fd 90 <0f> 0b e8 4c 6d 79 fd 90 0f 0b e8 94 c9 ab 07 0f 1f 40 00 90 90 90 RSP: 0018:ffffc9000d37e740 EFLAGS: 00010246 RAX: ffffffff841b6d0c RBX: 0000000000000005 RCX: 0000000000040000 RDX: ffffc9000dd62000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9000d37e878 R08: ffffffff841b6adb R09: ffffffffffffffff R10: ffffffffffffffff R11: ffffffffffffffff R12: dffffc0000000000 R13: 0000000000000055 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f79519846c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f79469ff000 CR3: 000000004007a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 0033:0x7f7950b7feba 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:00007f7951983e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7951983ef0 RCX: 00007f7950b7feba RDX: 00000000200058c0 RSI: 0000000020005900 RDI: 00007f7951983eb0 RBP: 00000000200058c0 R08: 00007f7951983ef0 R09: 0000000000004014 R10: 0000000000004014 R11: 0000000000000246 R12: 0000000020005900 R13: 00007f7951983eb0 R14: 00000000000058f1 R15: 0000000020000000 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 06 33 e3 fd e9 9d fd ff ff e8 5c 6d 79 fd 90 0f 0b e8 54 6d 79 fd 90 <0f> 0b e8 4c 6d 79 fd 90 0f 0b e8 94 c9 ab 07 0f 1f 40 00 90 90 90 RSP: 0018:ffffc9000d37e740 EFLAGS: 00010246 RAX: ffffffff841b6d0c RBX: 0000000000000005 RCX: 0000000000040000 RDX: ffffc9000dd62000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9000d37e878 R08: ffffffff841b6adb R09: ffffffffffffffff R10: ffffffffffffffff R11: ffffffffffffffff R12: dffffc0000000000 R13: 0000000000000055 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f79519846c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b6774df0c8 CR3: 000000004007a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400