loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.519: (unknown version) opts=metadata_checksum=none,data_checksum=none,checksum_err_retry_nr=0,compression=gzip,wide_macs,nopromote_whole_extents,degraded=yes,no_splitbrain_check,fsck,nojournal_transaction_names,allocator_stuck_timeout=3,noexcl,reconstruct_alloc,version_upgrade=incompatible allowing incompatible features above 0.0: (unknown version) features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Version downgrade required: bcachefs (loop0): Version upgrade required: Version upgrade from 0.24: unwritten_extents to 1.519: (unknown version) incomplete Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive 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,check_rebalance_work,set_fs_needs_rebalance bcachefs (loop0): Now allowing incompatible features up to 1.28: inode_has_case_insensitive, previously allowed up to 0.0: (unknown version) bcachefs (loop0): dropping and reconstructing all alloc info bcachefs (loop0): invalid bkey in btree_node btree=extents level=0: u64s 7 type extent 4099:8:U32_MAX len 8 ver 0: durability: 1 crc: c_size 8 size 8 offset 0 nonce 0 csum (unknown csum_type 15) 0:7f compress (unknown compression_type 15) ptr: 0:34:0 gen 0 invalid checksum type, deleting bcachefs (loop0): error reading btree root btree=dirents level=0: btree_node_read_error, fixing bcachefs (loop0): check_topology... bcachefs (loop0): btree root dirents unreadable, must recover from scan bcachefs (loop0): running recovery pass scan_for_btree_nodes (1), currently at check_topology (2) - rewinding bcachefs (loop0): bch2_check_root(): error restart_recovery 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 dirents unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=dirents 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 9aa2895aefce4bdf written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0 bcachefs (loop0): empty interior btree node at btree=dirents level=1 u64s 5 type btree_ptr SPOS_MAX len 0 ver 0, fixing bcachefs (loop0): bch2_btree_repair_topology_recurse(): error ECHILD bcachefs (loop0): empty btree root dirents done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_update.c:375! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5346 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00224-g379f604cc3dc #0 PREEMPT(full) 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_update_by_path+0x1efb/0x1f30 fs/bcachefs/btree_update.c:375 Code: 80 e1 07 fe c1 38 c1 0f 8c 40 f7 ff ff 48 8b 7c 24 28 e8 08 0a fa fd e9 31 f7 ff ff e8 be 86 96 fd 90 0f 0b e8 b6 86 96 fd 90 <0f> 0b e8 ae 86 96 fd 90 0f 0b e8 a6 86 96 fd 90 0f 0b e8 9e 86 96 RSP: 0018:ffffc9000d2f6a08 EFLAGS: 00010293 RAX: ffffffff8429afba RBX: 0000000000008542 RCX: ffff888000594880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff1100aa94002 R08: ffffffff844db6c9 R09: 0000000000000002 R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff1100aa9405e R13: ffff8880554a0010 R14: 0000000000000088 R15: ffff8880554a02f0 FS: 00007f3f967f56c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007febdb7909c0 CR3: 0000000040f56000 CR4: 0000000000352ef0 Call Trace: bch2_trans_update_ip+0x9a6/0x1db0 fs/bcachefs/btree_update.c:531 bch2_trans_update fs/bcachefs/btree_update.h:123 [inline] bch2_journal_replay_key+0x4b0/0xb40 fs/bcachefs/recovery.c:311 bch2_journal_replay+0x171d/0x2630 fs/bcachefs/recovery.c:396 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:484 [inline] __bch2_run_recovery_passes+0x395/0x1010 fs/bcachefs/recovery_passes.c:539 bch2_run_recovery_passes+0x184/0x210 fs/bcachefs/recovery_passes.c:610 bch2_fs_recovery+0x2690/0x3a50 fs/bcachefs/recovery.c:1005 bch2_fs_start+0xaaf/0xda0 fs/bcachefs/super.c:1213 bch2_fs_get_tree+0xb39/0x1520 fs/bcachefs/fs.c:2488 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3f9a3900ca 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:00007f3f967f4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3f967f4ef0 RCX: 00007f3f9a3900ca RDX: 00002000000000c0 RSI: 0000200000000100 RDI: 00007f3f967f4eb0 RBP: 00002000000000c0 R08: 00007f3f967f4ef0 R09: 000000000000001e R10: 000000000000001e R11: 0000000000000246 R12: 0000200000000100 R13: 00007f3f967f4eb0 R14: 00000000000059af R15: 0000200000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_trans_update_by_path+0x1efb/0x1f30 fs/bcachefs/btree_update.c:375 Code: 80 e1 07 fe c1 38 c1 0f 8c 40 f7 ff ff 48 8b 7c 24 28 e8 08 0a fa fd e9 31 f7 ff ff e8 be 86 96 fd 90 0f 0b e8 b6 86 96 fd 90 <0f> 0b e8 ae 86 96 fd 90 0f 0b e8 a6 86 96 fd 90 0f 0b e8 9e 86 96 RSP: 0018:ffffc9000d2f6a08 EFLAGS: 00010293 RAX: ffffffff8429afba RBX: 0000000000008542 RCX: ffff888000594880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff1100aa94002 R08: ffffffff844db6c9 R09: 0000000000000002 R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff1100aa9405e R13: ffff8880554a0010 R14: 0000000000000088 R15: ffff8880554a02f0 FS: 00007f3f967f56c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561fae7502c8 CR3: 0000000040f56000 CR4: 0000000000352ef0