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,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 1.13: inode_has_child_snapshots 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 ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy_dir crypto/scatterwalk.c:23 [inline] BUG: KASAN: slab-out-of-bounds in scatterwalk_copychunks+0x1cc/0x460 crypto/scatterwalk.c:38 Read of size 24 at addr ffff888051720fe8 by task syz.0.0/5326 CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted 6.12.0-rc7-syzkaller #0 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:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 memcpy_dir crypto/scatterwalk.c:23 [inline] scatterwalk_copychunks+0x1cc/0x460 crypto/scatterwalk.c:38 skcipher_next_slow+0x39d/0x480 crypto/skcipher.c:276 skcipher_walk_next+0x634/0xba0 crypto/skcipher.c:361 chacha_simd_stream_xor+0x67f/0xd10 arch/x86/crypto/chacha_glue.c:192 do_encrypt_sg fs/bcachefs/checksum.c:108 [inline] do_encrypt+0x992/0xd70 fs/bcachefs/checksum.c:124 bset_encrypt fs/bcachefs/btree_io.h:118 [inline] bch2_btree_node_read_done+0x17b4/0x5e90 fs/bcachefs/btree_io.c:1115 btree_node_read_work+0x68b/0x1260 fs/bcachefs/btree_io.c:1327 bch2_btree_node_read+0x2433/0x2a10 __bch2_btree_root_read fs/bcachefs/btree_io.c:1753 [inline] bch2_btree_root_read+0x617/0x7a0 fs/bcachefs/btree_io.c:1775 read_btree_roots+0x296/0x840 fs/bcachefs/recovery.c:523 bch2_fs_recovery+0x2585/0x39d0 fs/bcachefs/recovery.c:853 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1036 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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: 0033:0x7f94eb17feba 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:00007f94eabfde68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f94eabfdef0 RCX: 00007f94eb17feba RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007f94eabfdeb0 RBP: 0000000020000040 R08: 00007f94eabfdef0 R09: 0000000000000080 R10: 0000000000000080 R11: 0000000000000246 R12: 0000000020000080 R13: 00007f94eabfdeb0 R14: 000000000000f618 R15: 0000000020001400 The buggy address belongs to the object at ffff888051720f18 which belongs to the cache inode_cache of size 1160 The buggy address is located 208 bytes inside of allocated 1160-byte region [ffff888051720f18, ffff8880517213a0) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x51720 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff888030407a00 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800c000c 00000001f5000000 0000000000000000 head: 04fff00000000040 ffff888030407a00 dead000000000122 0000000000000000 head: 0000000000000000 00000000800c000c 00000001f5000000 0000000000000000 head: 04fff00000000002 ffffea000145c801 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Reclaimable, gfp_mask 0xd20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_RECLAIMABLE), pid 5326, tgid 5325 (syz.0.0), ts 75163517231, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1541 prep_new_page mm/page_alloc.c:1549 [inline] get_page_from_freelist+0x3649/0x3790 mm/page_alloc.c:3459 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4735 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x140 mm/slub.c:2412 allocate_slab+0x5a/0x2f0 mm/slub.c:2578 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] kmem_cache_alloc_lru_noprof+0x1c5/0x2b0 mm/slub.c:4153 alloc_inode+0x87/0x1a0 fs/inode.c:267 new_inode_pseudo fs/inode.c:1104 [inline] new_inode+0x22/0x1d0 fs/inode.c:1123 debugfs_get_inode fs/debugfs/inode.c:72 [inline] __debugfs_create_file+0x142/0x4b0 fs/debugfs/inode.c:433 bch2_fs_debug_btree_init fs/bcachefs/debug.c:890 [inline] bch2_fs_debug_init+0x354/0x430 fs/bcachefs/debug.c:935 bch2_fs_online+0x28e/0x860 fs/bcachefs/super.c:698 bch2_fs_alloc fs/bcachefs/super.c:951 [inline] bch2_fs_open+0x2f0a/0x2f80 fs/bcachefs/super.c:2064 bch2_fs_get_tree+0x738/0x1710 fs/bcachefs/fs.c:2157 page_owner free stack trace missing Memory state around the buggy address: ffff888051720e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888051720f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888051720f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888051721000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888051721080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================