bcachefs (loop0): bcachefs (loop0): error validating btree node on loop0 at btree dirents level 0/0 u64s 11 type btree_ptr_v2 U64_MAX:18446744073709486080:327679 len 0 ver 0: seq 9aa2895aefce4bdf written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0 node offset 0/24 bset u64s 0: incorrect max key SPOS_MAX, btree topology error: bcachefs (loop0): flagging btree dirents lost data bcachefs (loop0): error reading btree root btree=dirents level=0: btree_node_read_error, fixing bcachefs (loop0): 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 8/16 bset u64s 10: checksum error, type none: got should be , exiting Unable to continue, halting bcachefs (loop0): flagging btree xattrs lost data bcachefs (loop0): error reading btree root btree=xattrs level=0: btree_node_read_error, fixing bcachefs (loop0): bcachefs (loop0): error validating btree node on loop0 at btree subvolumes level 0/0 u64s 11 type btree_ptr_v2 18446744073709486089:U64_MAX:U32_MAX len 0 ver 0: seq c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0 node offset 0/16 bset u64s 0: incorrect max key SPOS_MAX, btree topology error: bcachefs (loop0): flagging btree subvolumes lost data bcachefs (loop0): error reading btree root btree=subvolumes level=0: btree_node_read_error, 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 extents unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=extents 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 c6c25c03258c59c5 written 16 min_key 0:512:0 durability: 1 ptr: 0:27:0 gen 0 bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=extents level=0 POS_MIN - 0:511:U32_MAX bcachefs (loop0): btree node with incorrect min_key at btree=extents level=1: parent: u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 next: u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c6c25c03258c59c5 written 16 min_key 0:512:0 durability: 1 ptr: 0:27:0 gen 0, fixing bcachefs (loop0): set_node_min(): u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c6c25c03258c59c5 written 16 min_key 0:512:0 durability: 1 ptr: 0:27:0 gen 0 -> POS_MIN 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): 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 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 bcachefs (loop0): Topology repair: unreadable btree node at btree=xattrs level=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, fixing bcachefs (loop0): 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 bcachefs (loop0): btree root subvolumes unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=subvolumes 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 c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0 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): done starting filesystem ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5325 at fs/bcachefs/fs-io.c:344 __bch2_truncate_folio+0x21d8/0x2640 fs/bcachefs/fs-io.c:344 Modules linked in: CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00042-g1a1d569a75f3 #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_truncate_folio+0x21d8/0x2640 fs/bcachefs/fs-io.c:344 Code: 41 5f 5d c3 cc cc cc cc e8 d5 71 4f fd 48 c7 c7 fc bb 5b 8e e8 09 a7 e6 ff 89 05 d3 57 1a 16 e9 ee e0 ff ff e8 b9 71 4f fd 90 <0f> 0b 90 e9 8a f8 ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c f8 RSP: 0018:ffffc9000d3bf8c0 EFLAGS: 00010283 RAX: ffffffff8473e377 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000de8a000 RSI: 0000000000000c84 RDI: 0000000000000c85 RBP: ffffc9000d3bfbb0 R08: ffffffff8473dbfc R09: 1ffffd40002b3618 R10: dffffc0000000000 R11: fffff940002b3619 R12: ffffc9000d3bfb30 R13: 1ffff110089c83d6 R14: ffff888044e41eb0 R15: 0000000000000000 FS: 00007ff0d81b46c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0cb23f000 CR3: 0000000036172000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_truncate_folios fs/bcachefs/fs-io.c:383 [inline] bchfs_fpunch+0x115/0x750 fs/bcachefs/fs-io.c:538 bch2_fallocate_dispatch+0x412/0x580 fs/bcachefs/fs-io.c:812 vfs_fallocate+0x627/0x7a0 fs/open.c:338 ksys_fallocate fs/open.c:362 [inline] __do_sys_fallocate fs/open.c:367 [inline] __se_sys_fallocate fs/open.c:365 [inline] __x64_sys_fallocate+0xbc/0x110 fs/open.c:365 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff0d738e169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ff0d81b4038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007ff0d75b5fa0 RCX: 00007ff0d738e169 RDX: 0000000000000007 RSI: 0000000000000003 RDI: 000000000000000a RBP: 00007ff0d7410a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008000c62 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff0d75b5fa0 R15: 00007fff99a91328