loop0: detected capacity change from 0 to 64 ================================================================== BUG: KASAN: out-of-bounds in hfs_bnode_move+0xea/0x130 fs/hfs/bnode.c:143 Read of size 18446744073709486080 at addr ffff88804da92400 by task syz.0.16/5500 CPU: 0 UID: 0 PID: 5500 Comm: syz.0.16 Not tainted 6.16.0-rc7-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 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x230 mm/kasan/report.c:480 kasan_report+0x118/0x150 mm/kasan/report.c:593 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:189 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 hfs_bnode_move+0xea/0x130 fs/hfs/bnode.c:143 hfs_brec_remove+0x467/0x550 fs/hfs/brec.c:222 hfs_cat_move+0x6fb/0x960 fs/hfs/catalog.c:364 hfs_rename+0x1dc/0x2d0 fs/hfs/dir.c:299 vfs_rename+0xb99/0xec0 fs/namei.c:5137 do_renameat2+0x878/0xc50 fs/namei.c:5286 __do_sys_rename fs/namei.c:5333 [inline] __se_sys_rename fs/namei.c:5331 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5331 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: 0033:0x7fcdedb8e9a9 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:00007ffc455e6ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fcdeddb5fa0 RCX: 00007fcdedb8e9a9 RDX: 0000000000000000 RSI: 0000200000000780 RDI: 00002000000003c0 RBP: 00007fcdedc10d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcdeddb5fa0 R14: 00007fcdeddb5fa0 R15: 0000000000000002 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:ffff888043f084b8 index:0x38 pfn:0x4da92 memcg:ffff888030a98d00 aops:ext4_da_aops ino:7ec dentry name(?):"syz.0nSXfn" flags: 0x4fff60000000028(uptodate|lru|node=1|zone=1|lastcpupid=0x7ff) raw: 04fff60000000028 ffffea000136a448 ffffea000136a4c8 ffff888043f084b8 raw: 0000000000000038 0000000000000000 00000001ffffffff ffff888030a98d00 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x152c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 5349, tgid 5349 (syz.0.1), ts 97250533117, free_ts 96827532668 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline] alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2520 filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1007 ractl_alloc_folio mm/readahead.c:186 [inline] page_cache_ra_unbounded+0x2b9/0x7b0 mm/readahead.c:270 do_sync_mmap_readahead+0x4b5/0x5f0 mm/filemap.c:3271 filemap_fault+0x62a/0x1200 mm/filemap.c:3412 __do_fault+0x138/0x390 mm/memory.c:5169 do_shared_fault mm/memory.c:5654 [inline] do_fault mm/memory.c:5728 [inline] do_pte_missing mm/memory.c:4251 [inline] handle_pte_fault mm/memory.c:6069 [inline] __handle_mm_fault+0x198b/0x5620 mm/memory.c:6212 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6381 do_user_addr_fault+0xa81/0x1390 arch/x86/mm/fault.c:1336 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 page last free pid 5331 tgid 5331 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] free_unref_folios+0xc66/0x14d0 mm/page_alloc.c:2763 folios_put_refs+0x559/0x640 mm/swap.c:992 free_pages_and_swap_cache+0x277/0x520 mm/swap_state.c:264 __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:397 [inline] tlb_flush_mmu+0x3a0/0x680 mm/mmu_gather.c:404 tlb_finish_mmu+0xc3/0x1d0 mm/mmu_gather.c:497 vms_clear_ptes+0x42c/0x540 mm/vma.c:1230 vms_complete_munmap_vmas+0x206/0x8a0 mm/vma.c:1272 do_vmi_align_munmap+0x358/0x420 mm/vma.c:1531 do_vmi_munmap+0x253/0x2e0 mm/vma.c:1579 __vm_munmap+0x23b/0x3d0 mm/vma.c:3108 __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/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88804da92300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88804da92380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88804da92400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88804da92480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88804da92500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================