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,journal_flush_disabled,fsck,recovery_pass_last=set_may_go_rw,reconstruct_alloc,no_data_io allowing incompatible features above 0.0: (unknown version) features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 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 1.28: inode_has_case_insensitive 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,check_rebalance_work,set_fs_needs_rebalance bcachefs (loop0): dropping and reconstructing all alloc info 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): insufficient writeable journal devices available: have 0, need 1 rw journal devs: bcachefs (loop0): done starting filesystem ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5357 at fs/bcachefs/fs-io.c:361 __bch2_truncate_folio+0x179c/0x1a30 fs/bcachefs/fs-io.c:361 Modules linked in: CPU: 0 UID: 0 PID: 5357 Comm: syz.0.0 Not tainted syzkaller #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+0x179c/0x1a30 fs/bcachefs/fs-io.c:361 Code: 5f 5d c3 cc cc cc cc cc e8 61 64 7e fd 48 c7 c7 18 b3 a3 8d e8 85 61 e9 ff 89 05 6f 3b 85 15 e9 49 ea ff ff e8 45 64 7e fd 90 <0f> 0b 90 e9 26 f9 ff ff e8 47 10 3a 07 e8 32 64 7e fd be 00 10 00 RSP: 0018:ffffc9000edc79e0 EFLAGS: 00010287 RAX: ffffffff8441569b RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000dcca000 RSI: 0000000000000f87 RDI: 0000000000000f88 RBP: ffffc9000edc7bb0 R08: ffffea00010ba207 R09: 1ffffd4000217440 R10: dffffc0000000000 R11: fffff94000217441 R12: 1ffff1100a82b8fd R13: dffffc0000000000 R14: ffff88805415c7e8 R15: 0000000000000000 FS: 00007f10187b26c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000042fdf000 CR4: 0000000000352ef0 Call Trace: bch2_truncate_folios fs/bcachefs/fs-io.c:400 [inline] bchfs_fpunch+0x10f/0x520 fs/bcachefs/fs-io.c:564 bch2_fallocate_dispatch+0x2bc/0x410 fs/bcachefs/fs-io.c:838 vfs_fallocate+0x669/0x7e0 fs/open.c:342 ksys_fallocate fs/open.c:366 [inline] __do_sys_fallocate fs/open.c:371 [inline] __se_sys_fallocate fs/open.c:369 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:369 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f101798ebe9 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:00007f10187b2038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f1017bb5fa0 RCX: 00007f101798ebe9 RDX: 0000000000000004 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007f1017a11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000002328 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1017bb6038 R14: 00007f1017bb5fa0 R15: 00007ffc52664618