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,metadata_target=invalid device 255,noshard_inode_numbers,noinodes_use_key_cache,journal_flush_delay=1001,nojournal_transaction_names bcachefs (loop0): recovering from clean shutdown, journal seq 13 bcachefs (loop0): Version upgrade required: Version upgrade from 0.19: freespace to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.19: freespace 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... lru key points to nonexistent device:bucket 0:4225058, fixing done bcachefs (loop0): check_btree_backpointers... done bcachefs (loop0): check_backpointers_to_extents... done bcachefs (loop0): check_extents_to_backpointers... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_cache.h:131! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller-00272-gda4373fbcf00 #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_id_root fs/bcachefs/btree_cache.h:131 [inline] RIP: 0010:btree_path_lock_root fs/bcachefs/btree_iter.c:723 [inline] RIP: 0010:bch2_btree_path_traverse_one+0x28de/0x2940 fs/bcachefs/btree_iter.c:1183 Code: f4 8e 48 89 de e8 12 de dc 00 e9 78 f8 ff ff e8 b8 ca 7b fd 90 0f 0b e8 00 57 ae 07 e8 ab ca 7b fd 90 0f 0b e8 a3 ca 7b fd 90 <0f> 0b e8 9b ca 7b fd 90 0f 0b e8 93 ca 7b fd 90 0f 0b 48 8b 4c 24 RSP: 0018:ffffc90001795d00 EFLAGS: 00010293 RAX: ffffffff84190fbd RBX: ffff88804ff80000 RCX: ffff88800097c880 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 RBP: ffffc90001795ff0 R08: ffffffff84190009 R09: ffffffff8418d069 R10: 0000000000000002 R11: ffff88800097c880 R12: dffffc0000000000 R13: 0000000000000005 R14: ffff88804dc8c408 R15: 0000000000000000 FS: 00007fdd448306c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdf8827cb8 CR3: 000000003b55c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] bch2_btree_iter_peek_node+0x223/0xed0 fs/bcachefs/btree_iter.c:1901 bch2_backpointer_get_node+0x2d2/0x880 fs/bcachefs/backpointers.c:364 bch2_backpointer_get_key+0x61c/0x970 fs/bcachefs/backpointers.c:335 check_bp_exists fs/bcachefs/backpointers.c:579 [inline] check_extent_to_backpointers+0x21f9/0x46b0 fs/bcachefs/backpointers.c:683 check_btree_root_to_backpointers fs/bcachefs/backpointers.c:717 [inline] bch2_check_extents_to_backpointers_pass fs/bcachefs/backpointers.c:868 [inline] bch2_check_extents_to_backpointers+0xeb8/0x1bf0 fs/bcachefs/backpointers.c:932 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:185 bch2_run_recovery_passes+0x3a7/0x880 fs/bcachefs/recovery_passes.c:238 bch2_fs_recovery+0x25cc/0x39d0 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: 0033:0x7fdd4397feba 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:00007fdd4482fe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fdd4482fef0 RCX: 00007fdd4397feba RDX: 0000000020000040 RSI: 000000002000f680 RDI: 00007fdd4482feb0 RBP: 0000000020000040 R08: 00007fdd4482fef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000002000f680 R13: 00007fdd4482feb0 R14: 000000000000f634 R15: 0000000020000880 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_id_root fs/bcachefs/btree_cache.h:131 [inline] RIP: 0010:btree_path_lock_root fs/bcachefs/btree_iter.c:723 [inline] RIP: 0010:bch2_btree_path_traverse_one+0x28de/0x2940 fs/bcachefs/btree_iter.c:1183 Code: f4 8e 48 89 de e8 12 de dc 00 e9 78 f8 ff ff e8 b8 ca 7b fd 90 0f 0b e8 00 57 ae 07 e8 ab ca 7b fd 90 0f 0b e8 a3 ca 7b fd 90 <0f> 0b e8 9b ca 7b fd 90 0f 0b e8 93 ca 7b fd 90 0f 0b 48 8b 4c 24 RSP: 0018:ffffc90001795d00 EFLAGS: 00010293 RAX: ffffffff84190fbd RBX: ffff88804ff80000 RCX: ffff88800097c880 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 RBP: ffffc90001795ff0 R08: ffffffff84190009 R09: ffffffff8418d069 R10: 0000000000000002 R11: ffff88800097c880 R12: dffffc0000000000 R13: 0000000000000005 R14: ffff88804dc8c408 R15: 0000000000000000 FS: 00007fdd448306c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c5e8c3f0a8 CR3: 000000003b55c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400