bcachefs (loop0): btree root snapshots unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=snapshots 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 ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0 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... bucket 0:34 data type user ptr gen 0 missing in alloc btree while marking u64s 7 type extent 4099:8:4294905343 len 8 ver 0: durability: 1 crc: c_size 8 size 8 offset 0 nonce 0 csum none 0:0 compress incompressible ptr: 0:34:0 gen 0, fixing bucket 0:27 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 c6c25c03258c59c5 written 16 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0, fixing bucket 0:38 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 7589ab5e0c11cc7a written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0, fixing bucket 0:41 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 9aa2895aefce4bdf written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0, fixing bucket 0:31 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 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0, fixing bucket 0:35 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 c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0, fixing bucket 0:32 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 ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0, fixing bucket 0:28 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 28f61e078e70b95c written 16 min_key POS_MIN durability: 1 ptr: 0:28:0 gen 0, fixing bucket 0:29 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 e81e1ed936acf3df written 32 min_key POS_MIN durability: 1 ptr: 0:29:0 gen 0, fixing bucket 0:37 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 4a8b0fa43a9980a6 written 24 min_key POS_MIN durability: 1 ptr: 0:37:0 gen 0, fixing bucket 0:42 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 1db8f60c84bb244c written 8 min_key POS_MIN durability: 1 ptr: 0:42:0 gen 0, fixing done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... done bcachefs (loop0): check_alloc_info... hole in alloc btree missing in freespace btree device 0 buckets 26-27, fixing hole in alloc btree missing in freespace btree device 0 buckets 26-27, fixing done bcachefs (loop0): check_lrus... done bcachefs (loop0): check_backpointers_to_extents... done bcachefs (loop0): check_extents_to_backpointers... bcachefs (loop0): scanning for missing backpointers in 6/128 buckets done bcachefs (loop0): reconstruct_snapshots... snapshot node 4294905343 from tree 4294905343 missing, recreating ------------[ cut here ]------------ kernel BUG at fs/bcachefs/bkey_types.h:210! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.14.0-rc2-syzkaller-00185-g128c8f96eb86 #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:bkey_s_c_to_subvolume fs/bcachefs/bkey_types.h:210 [inline] RIP: 0010:check_snapshot_exists fs/bcachefs/snapshot.c:884 [inline] RIP: 0010:bch2_reconstruct_snapshots+0x35a5/0x35b0 fs/bcachefs/snapshot.c:1001 Code: 03 a9 fd e9 e3 cb ff ff e8 38 c6 41 fd e8 b3 f6 a8 fd 4c 89 ef 89 de e8 29 68 cc ff e8 24 c6 41 fd 90 0f 0b e8 1c c6 41 fd 90 <0f> 0b e8 d4 2b 88 07 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d23ee20 EFLAGS: 00010246 RAX: ffffffff847ff144 RBX: 0000000000000009 RCX: 0000000000100000 RDX: ffffc9000e68a000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000d23f428 R08: ffffffff847fe26a R09: 0000000000000000 R10: ffffc9000d23e820 R11: fffff52001a47d11 R12: ffff888036afc420 R13: 0000000000000000 R14: ffff888056552e30 R15: 1ffff11006d5f884 FS: 00007fa7471fc6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ad1a28d0e8 CR3: 0000000044120000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 0033:0x7fa74638e58a 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:00007fa7471fbe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa7471fbef0 RCX: 00007fa74638e58a RDX: 00004000000058c0 RSI: 0000400000005900 RDI: 00007fa7471fbeb0 RBP: 00004000000058c0 R08: 00007fa7471fbef0 R09: 0000000001000000 R10: 0000000001000000 R11: 0000000000000246 R12: 0000400000005900 R13: 00007fa7471fbeb0 R14: 0000000000005934 R15: 0000400000002140 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bkey_s_c_to_subvolume fs/bcachefs/bkey_types.h:210 [inline] RIP: 0010:check_snapshot_exists fs/bcachefs/snapshot.c:884 [inline] RIP: 0010:bch2_reconstruct_snapshots+0x35a5/0x35b0 fs/bcachefs/snapshot.c:1001 Code: 03 a9 fd e9 e3 cb ff ff e8 38 c6 41 fd e8 b3 f6 a8 fd 4c 89 ef 89 de e8 29 68 cc ff e8 24 c6 41 fd 90 0f 0b e8 1c c6 41 fd 90 <0f> 0b e8 d4 2b 88 07 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d23ee20 EFLAGS: 00010246 RAX: ffffffff847ff144 RBX: 0000000000000009 RCX: 0000000000100000 RDX: ffffc9000e68a000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000d23f428 R08: ffffffff847fe26a R09: 0000000000000000 R10: ffffc9000d23e820 R11: fffff52001a47d11 R12: ffff888036afc420 R13: 0000000000000000 R14: ffff888056552e30 R15: 1ffff11006d5f884 FS: 00007fa7471fc6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ad1a28d0e8 CR3: 0000000044120000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400