REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): using 3.5.x disk format REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_in_buffer+0x1bc/0xab0 fs/reiserfs/lbalance.c:1017 Read of size 18446744073709551365 at addr ffff888073ab5000 by task syz-executor159/4992 CPU: 0 PID: 4992 Comm: syz-executor159 Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0x163/0x540 mm/kasan/report.c:462 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 leaf_paste_in_buffer+0x1bc/0xab0 fs/reiserfs/lbalance.c:1017 balance_leaf_new_nodes_paste_whole fs/reiserfs/do_balan.c:1171 [inline] balance_leaf_new_nodes_paste fs/reiserfs/do_balan.c:1215 [inline] balance_leaf_new_nodes fs/reiserfs/do_balan.c:1246 [inline] balance_leaf+0x6680/0x12510 fs/reiserfs/do_balan.c:1450 do_balance+0x30d/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x732/0x870 fs/reiserfs/stree.c:2157 reiserfs_get_block+0x2250/0x5130 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x548/0x1a50 fs/buffer.c:2063 reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2773 generic_cont_expand_simple+0x18b/0x2a0 fs/buffer.c:2424 reiserfs_setattr+0x57d/0x1140 fs/reiserfs/inode.c:3303 notify_change+0xc8b/0xf40 fs/attr.c:483 do_truncate+0x220/0x300 fs/open.c:66 do_sys_ftruncate+0x2f3/0x390 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6eb39f1819 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff1a65e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6eb39f1819 RDX: 00007f6eb39f1819 RSI: 0000000002007ffb RDI: 0000000000000005 RBP: 00007f6eb39b10b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6eb39b1140 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the physical page: page:ffffea0001cead40 refcount:1 mapcount:0 mapping:ffff888078195508 index:0x310 pfn:0x73ab5 memcg:ffff88814165c000 aops:shmem_aops ino:401 dentry name:"memfd:syzkaller" flags: 0xfff0000008001e(referenced|uptodate|dirty|lru|swapbacked|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff0000008001e ffffea0001cc5d48 ffffea0001ce7e48 ffff888078195508 raw: 0000000000000310 0000000000000000 00000001ffffffff ffff88814165c000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 4992, tgid 4992 (syz-executor159), ts 55710472567, free_ts 49134542133 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1744 prep_new_page mm/page_alloc.c:1751 [inline] get_page_from_freelist+0x320e/0x3390 mm/page_alloc.c:3523 __alloc_pages+0x255/0x670 mm/page_alloc.c:4794 __folio_alloc+0x13/0x30 mm/page_alloc.c:4826 vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2240 shmem_alloc_folio mm/shmem.c:1579 [inline] shmem_alloc_and_acct_folio+0x5e7/0xe10 mm/shmem.c:1603 shmem_get_folio_gfp+0x120f/0x3470 mm/shmem.c:1948 shmem_get_folio mm/shmem.c:2079 [inline] shmem_write_begin+0x172/0x4e0 mm/shmem.c:2573 generic_perform_write+0x300/0x5e0 mm/filemap.c:3946 __generic_file_write_iter+0x17a/0x400 mm/filemap.c:4074 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4106 call_write_iter include/linux/fs.h:1872 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x782/0xaf0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1308 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2577 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2718 release_pages+0x2193/0x2470 mm/swap.c:1042 tlb_batch_pages_flush mm/mmu_gather.c:97 [inline] tlb_flush_mmu_free mm/mmu_gather.c:292 [inline] tlb_flush_mmu+0x100/0x210 mm/mmu_gather.c:299 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:391 unmap_region+0x258/0x2a0 mm/mmap.c:2222 do_vmi_align_munmap+0x120a/0x1900 mm/mmap.c:2465 do_vmi_munmap+0x24a/0x2b0 mm/mmap.c:2527 __vm_munmap+0x226/0x470 mm/mmap.c:2802 __do_sys_munmap mm/mmap.c:2827 [inline] __se_sys_munmap mm/mmap.c:2824 [inline] __x64_sys_munmap+0x69/0x80 mm/mmap.c:2824 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888073ab4f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888073ab4f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888073ab5000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888073ab5080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888073ab5100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================