loop0: detected capacity change from 0 to 32777 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,metadata_target=/dev/loop0,noinodes_use_key_cache,degraded,journal_flush_disabled,fsck,fix_errors=ask,nojournal_transaction_names invalid bkey in superblock btree=snapshots level=0: u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq d771a06d670df06c written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0 nonzero snapshot: delete?, fixing bcachefs (loop0): recovering from clean shutdown, journal seq 13 bcachefs (loop0): Version upgrade required: Version upgrade from 0.32: (unknown version) to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.32: (unknown version) to 1.20: directory_size running recovery passes: check_allocations,check_extents_to_backpointers,check_snapshots,check_subvols,check_inodes,check_dirents,set_fs_needs_rebalance bcachefs (loop0): error validating btree node on loop0 at btree extents level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 4e0410879b0c2f04 written 16 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0 node offset 0/16: bad magic: want cd55ebed6fbbbf5c, got 5f5f5f5f5f5f5f5f bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): flagging btree extents lost data bcachefs (loop0): running explicit recovery pass check_lrus (14), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_backpointers_to_extents (16), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) error reading btree root btree=extents level=0: btree_node_read_error, fixing 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 0/24: bad magic: want cd55ebed6fbbbf5c, got 5f5f5f5f5f5f5f5f bcachefs (loop0): flagging btree inodes lost data error reading btree root btree=inodes level=0: btree_node_read_error, fixing bcachefs (loop0): error validating btree node on loop0 at btree dirents level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 267fcf747c875937 written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0 node offset 0/24: bad magic: want cd55ebed6fbbbf5c, got 5f5f5f5f5f5f5f5f bcachefs (loop0): flagging btree dirents lost data error reading btree root btree=dirents level=0: btree_node_read_error, fixing 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 1b881868e2a6abe1 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 node offset 0/16: bad magic: want cd55ebed6fbbbf5c, got 5f5f5f5f5f5f5f5f bcachefs (loop0): flagging btree xattrs lost data error reading btree root btree=xattrs level=0: btree_node_read_error, fixing ================================================================== BUG: KASAN: slab-out-of-bounds in crc64_be+0x131/0x1f0 lib/crc64.c:58 Read of size 1 at addr ffff888053960498 by task syz.0.0/5327 CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.14.0-rc4-syzkaller-00278-gece144f151ac #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:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 crc64_be+0x131/0x1f0 lib/crc64.c:58 bch2_checksum_update+0x10f/0x160 fs/bcachefs/checksum.c:89 bch2_checksum+0x37e/0x780 fs/bcachefs/checksum.c:226 bch2_btree_node_read_done+0x1402/0x6180 fs/bcachefs/btree_io.c:1130 btree_node_read_work+0x6dc/0x1380 fs/bcachefs/btree_io.c:1358 bch2_btree_node_read+0x2433/0x29f0 __bch2_btree_root_read fs/bcachefs/btree_io.c:1789 [inline] bch2_btree_root_read+0x626/0x7b0 fs/bcachefs/btree_io.c:1811 read_btree_roots+0x3d3/0xa70 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x260f/0x3de0 fs/bcachefs/recovery.c:928 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: 0033:0x7f902ad8e90a 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:00007f902bbf6e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f902bbf6ef0 RCX: 00007f902ad8e90a RDX: 000040000000f640 RSI: 000040000000f680 RDI: 00007f902bbf6eb0 RBP: 000040000000f640 R08: 00007f902bbf6ef0 R09: 0000000000000180 R10: 0000000000000180 R11: 0000000000000246 R12: 000040000000f680 R13: 00007f902bbf6eb0 R14: 000000000000f62d R15: 0000400000000180 Allocated by task 5327: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4115 [inline] slab_alloc_node mm/slub.c:4164 [inline] kmem_cache_alloc_lru_noprof+0x1dd/0x390 mm/slub.c:4183 alloc_inode+0x65/0x1a0 fs/inode.c:336 new_inode_pseudo fs/inode.c:1174 [inline] new_inode+0x22/0x1d0 fs/inode.c:1193 debugfs_get_inode fs/debugfs/inode.c:72 [inline] debugfs_create_dir+0xf6/0x430 fs/debugfs/inode.c:597 bch2_fs_debug_init+0xdb/0x450 fs/bcachefs/debug.c:908 bch2_fs_online+0x28e/0x860 fs/bcachefs/super.c:712 bch2_fs_alloc fs/bcachefs/super.c:955 [inline] bch2_fs_open+0x3175/0x31e0 fs/bcachefs/super.c:2064 bch2_fs_get_tree+0x738/0x17a0 fs/bcachefs/fs.c:2190 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 The buggy address belongs to the object at ffff888053960000 which belongs to the cache debugfs_inode_cache of size 1176 The buggy address is located 0 bytes to the right of allocated 1176-byte region [ffff888053960000, ffff888053960498) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53960 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888053791001 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff8880312a3640 dead000000000122 0000000000000000 raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff888053791001 head: 04fff00000000040 ffff8880312a3640 dead000000000122 0000000000000000 head: 0000000000000000 00000000000c000c 00000000f5000000 ffff888053791001 head: 04fff00000000002 ffffea00014e5801 ffffffffffffffff 0000000000000000 head: 0000000700000004 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 5327, tgid 5324 (syz.0.0), ts 69639469004, free_ts 69400468407 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551 prep_new_page mm/page_alloc.c:1559 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2587 new_slab mm/slub.c:2640 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826 __slab_alloc+0x58/0xa0 mm/slub.c:3916 __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] kmem_cache_alloc_lru_noprof+0x26c/0x390 mm/slub.c:4183 alloc_inode+0x65/0x1a0 fs/inode.c:336 new_inode_pseudo fs/inode.c:1174 [inline] new_inode+0x22/0x1d0 fs/inode.c:1193 debugfs_get_inode fs/debugfs/inode.c:72 [inline] debugfs_create_dir+0xf6/0x430 fs/debugfs/inode.c:597 bch2_fs_debug_init+0xdb/0x450 fs/bcachefs/debug.c:908 bch2_fs_online+0x28e/0x860 fs/bcachefs/super.c:712 bch2_fs_alloc fs/bcachefs/super.c:955 [inline] bch2_fs_open+0x3175/0x31e0 fs/bcachefs/super.c:2064 bch2_fs_get_tree+0x738/0x17a0 fs/bcachefs/fs.c:2190 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 page last free pid 5327 tgid 5324 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_folios+0xe40/0x18b0 mm/page_alloc.c:2707 folios_put_refs+0x76c/0x860 mm/swap.c:994 free_pages_and_swap_cache+0x2e5/0x690 mm/swap_state.c:331 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline] tlb_batch_pages_flush mm/mmu_gather.c:149 [inline] tlb_flush_mmu_free mm/mmu_gather.c:389 [inline] tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:396 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:488 vms_clear_ptes+0x432/0x530 mm/vma.c:1144 vms_complete_munmap_vmas+0x210/0x8f0 mm/vma.c:1186 do_vmi_align_munmap+0x5ef/0x6f0 mm/vma.c:1445 do_vmi_munmap+0x24e/0x2d0 mm/vma.c:1493 __vm_munmap+0x372/0x510 mm/vma.c:2951 __do_sys_munmap mm/mmap.c:1084 [inline] __se_sys_munmap mm/mmap.c:1081 [inline] __x64_sys_munmap+0x60/0x70 mm/mmap.c:1081 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 Memory state around the buggy address: ffff888053960380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888053960400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888053960480: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888053960500: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888053960580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================