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,noinodes_use_key_cache,journal_flush_delay=1001,fix_errors=no,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 1.25: extent_flags 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): bcachefs (loop0): error validating btree node on loop0 at btree inodes level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2a20405ac3f40602 written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0 node offset 16/24 bset u64s 110: checksum error, type chacha20_poly1305_128: got e8ca526fd9ea364218c2aedfef220dab should be d1e256903dc89dd6436b0db8b45d2093, shutting down inconsistency detected - emergency read only at journal seq 13 bcachefs (loop0): flagging btree inodes lost data bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) bcachefs (loop0): error reading btree root btree=inodes level=0: btree_node_read_error, fixing ================================================================== BUG: KASAN: use-after-free in poly1305_update include/crypto/poly1305.h:83 [inline] BUG: KASAN: use-after-free in bch2_checksum+0x238/0x640 fs/bcachefs/checksum.c:157 Read of size 8 at addr ffff888055101940 by task syz.0.0/5322 CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted 6.15.0-rc1-syzkaller-00301-g3bde70a2c827 #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 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x28f/0x2a0 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 poly1305_update include/crypto/poly1305.h:83 [inline] bch2_checksum+0x238/0x640 fs/bcachefs/checksum.c:157 bch2_btree_node_read_done+0x1474/0x6290 fs/bcachefs/btree_io.c:1132 btree_node_read_work+0x6cb/0x1400 fs/bcachefs/btree_io.c:1366 bch2_btree_node_read+0x2427/0x29e0 fs/bcachefs/btree_io.c:-1 __bch2_btree_root_read fs/bcachefs/btree_io.c:1797 [inline] bch2_btree_root_read+0x656/0x7e0 fs/bcachefs/btree_io.c:1819 read_btree_roots+0x3d7/0xa80 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x28e4/0x3e20 fs/bcachefs/recovery.c:928 bch2_fs_start+0x310/0x620 fs/bcachefs/super.c:1059 bch2_fs_get_tree+0x113e/0x18f0 fs/bcachefs/fs.c:2253 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3879 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4407 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: 0033:0x7ff0d778e90a 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:00007ff0d3bf4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff0d3bf4ef0 RCX: 00007ff0d778e90a RDX: 0000200000000040 RSI: 0000200000000080 RDI: 00007ff0d3bf4eb0 RBP: 0000200000000040 R08: 00007ff0d3bf4ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000080 R13: 00007ff0d3bf4eb0 R14: 000000000000f631 R15: 0000200000000100 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x55101 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 ffffea0001544048 ffffea0001544048 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffff888055101800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888055101880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888055101900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888055101980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888055101a00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================