netlink: 36 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 16 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 36 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 36 bytes leftover after parsing attributes in process `syz.0.0'. 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,fsck,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 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): check_allocations... done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/bset.c:1308! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.14.0-rc6-syzkaller-00022-gb7f94fcf5546 #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+0x4252/0x4280 fs/bcachefs/bset.c:1308 Code: 24 65 7b fd 90 0f 0b e8 1c 65 7b fd 90 0f 0b e8 14 65 7b fd 90 0f 0b e8 1c 93 c2 07 e8 07 65 7b fd 90 0f 0b e8 ff 64 7b fd 90 <0f> 0b e8 f7 64 7b fd 90 0f 0b e8 ef 64 7b fd 90 0f 0b e8 e7 64 7b RSP: 0018:ffffc9000d43e7a0 EFLAGS: 00010283 RAX: ffffffff84467a11 RBX: 0203010100000000 RCX: 0000000000100000 RDX: ffffc9000ecfb000 RSI: 00000000000b5b6f RDI: 00000000000b5b70 RBP: ffffc9000d43ea10 R08: ffffffff84463bb1 R09: 0000000000000000 R10: ffffc9000d43e930 R11: fffff52001a87d29 R12: ffff888044e80040 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007fd218bb66c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005643578cd088 CR3: 000000003ed38000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __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_traverse+0x6fa/0xce0 fs/bcachefs/btree_iter.c:1913 bch2_journal_replay_key+0x259/0xeb0 fs/bcachefs/recovery.c:264 bch2_journal_replay+0x1a46/0x2b10 fs/bcachefs/recovery.c:373 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:936 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1041 bch2_fs_get_tree+0xdb7/0x17a0 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: 0033:0x7fd217d8e90a 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:00007fd218bb5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fd218bb5ef0 RCX: 00007fd217d8e90a RDX: 00004000000058c0 RSI: 0000400000005900 RDI: 00007fd218bb5eb0 RBP: 00004000000058c0 R08: 00007fd218bb5ef0 R09: 0000000000010000 R10: 0000000000010000 R11: 0000000000000246 R12: 0000400000005900 R13: 00007fd218bb5eb0 R14: 0000000000005912 R15: 00004000000001c0 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_node_iter_init+0x4252/0x4280 fs/bcachefs/bset.c:1308 Code: 24 65 7b fd 90 0f 0b e8 1c 65 7b fd 90 0f 0b e8 14 65 7b fd 90 0f 0b e8 1c 93 c2 07 e8 07 65 7b fd 90 0f 0b e8 ff 64 7b fd 90 <0f> 0b e8 f7 64 7b fd 90 0f 0b e8 ef 64 7b fd 90 0f 0b e8 e7 64 7b RSP: 0018:ffffc9000d43e7a0 EFLAGS: 00010283 RAX: ffffffff84467a11 RBX: 0203010100000000 RCX: 0000000000100000 RDX: ffffc9000ecfb000 RSI: 00000000000b5b6f RDI: 00000000000b5b70 RBP: ffffc9000d43ea10 R08: ffffffff84463bb1 R09: 0000000000000000 R10: ffffc9000d43e930 R11: fffff52001a87d29 R12: ffff888044e80040 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007fd218bb66c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005643578cd088 CR3: 000000003ed38000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400