stripe_sectors 0 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 1 fragmentation 0 bp_start 8 data_type sb but dirty_sectors==0: delete?, fixing bcachefs (loop0): error validating btree node on loop0 at btree snapshots level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0 node offset 0/16: incorrect min_key: got 0:21474836480:0 should be POS_MIN bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): flagging btree snapshots lost data bcachefs (loop0): running explicit recovery pass check_lrus (14), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_backpointers_to_extents (16), 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=snapshots level=0: btree_node_read_error, fixing bcachefs (loop0): error validating btree node on loop0 at btree deleted_inodes level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1db8f60c84bb244c written 65447 min_key R 0:0:U32_MAX durability: 1 ptr: 0:42:0 gen 0 node offset 8/65447: btree node data missing: expected 65447 sectors, found 8, fixing bcachefs (loop0): btree_node_read_work: rewriting btree node at due to error btree=deleted_inodes level=0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1db8f60c84bb244c written 65447 min_key R 0:0:U32_MAX durability: 1 ptr: 0:42:0 gen 0 bcachefs (loop0): scan_for_btree_nodes... bcachefs (loop0): btree node scan found 3 nodes after overwrites done bcachefs (loop0): check_topology... bcachefs (loop0): btree root snapshots unreadable, must recover from scan no nodes found for btree snapshots, continuing done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... bcachefs (loop0): running explicit recovery pass reconstruct_snapshots (21), currently at snapshots_read (7) done bcachefs (loop0): check_allocations... btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0, fixing bucket 0:26 data type btree ptr gen 0 missing in alloc btree while marking u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap 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, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq e81e1ed936acf3df written 32 min_key POS_MIN durability: 1 ptr: 0:29:0 gen 0, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:633! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #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_path_level_init+0x9ca/0x9f0 fs/bcachefs/btree_iter.c:633 Code: f5 fa ff ff e8 d7 02 7f fd 90 0f 0b e8 cf 02 7f fd 90 0f 0b e8 c7 02 7f fd 90 0f 0b e8 bf 02 7f fd 90 0f 0b e8 b7 02 7f fd 90 <0f> 0b e8 af 02 7f fd 90 0f 0b e8 a7 02 7f fd 90 0f 0b e8 9f 02 7f RSP: 0018:ffffc9000d37e260 EFLAGS: 00010283 RAX: ffffffff84406a09 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000e6d2000 RSI: 000000000009e1c0 RDI: 000000000009e1c1 RBP: dffffc0000000000 R08: ffffffff8440625c R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203680f R12: ffff8880533d9000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888055e20033 FS: 00007f3b8ac3b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555dec1720c8 CR3: 000000004367c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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_peek fs/bcachefs/btree_iter.c:2270 [inline] bch2_btree_iter_peek_max+0xc06/0x6320 fs/bcachefs/btree_iter.c:2367 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:681 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:675 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:735 [inline] bch2_check_allocations+0x1309/0x6aa0 fs/bcachefs/btree_gc.c:1038 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:937 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1030 bch2_fs_get_tree+0xd8d/0x1740 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: 0033:0x7f3b89d8e54a 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:00007f3b8ac3ae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3b8ac3aef0 RCX: 00007f3b89d8e54a RDX: 0000000020000180 RSI: 0000000020005900 RDI: 00007f3b8ac3aeb0 RBP: 0000000020000180 R08: 00007f3b8ac3aef0 R09: 0000000001000000 R10: 0000000001000000 R11: 0000000000000246 R12: 0000000020005900 R13: 00007f3b8ac3aeb0 R14: 00000000000059b0 R15: 00000000200002c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0x9ca/0x9f0 fs/bcachefs/btree_iter.c:633 Code: f5 fa ff ff e8 d7 02 7f fd 90 0f 0b e8 cf 02 7f fd 90 0f 0b e8 c7 02 7f fd 90 0f 0b e8 bf 02 7f fd 90 0f 0b e8 b7 02 7f fd 90 <0f> 0b e8 af 02 7f fd 90 0f 0b e8 a7 02 7f fd 90 0f 0b e8 9f 02 7f RSP: 0018:ffffc9000d37e260 EFLAGS: 00010283 RAX: ffffffff84406a09 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000e6d2000 RSI: 000000000009e1c0 RDI: 000000000009e1c1 RBP: dffffc0000000000 R08: ffffffff8440625c R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203680f R12: ffff8880533d9000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888055e20033 FS: 00007f3b8ac3b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555dec1720c8 CR3: 000000004367c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400