REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) 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+0x1b8/0xab0 fs/reiserfs/lbalance.c:1017 Read of size 18446744073709551365 at addr ffff8880720d7000 by task syz-executor233/3547 CPU: 1 PID: 3547 Comm: syz-executor233 Not tainted 6.1.57-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memmove+0x25/0x60 mm/kasan/shadow.c:54 leaf_paste_in_buffer+0x1b8/0xab0 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+0x667c/0x12510 fs/reiserfs/do_balan.c:1450 do_balance+0x309/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x73b/0x880 fs/reiserfs/stree.c:2159 reiserfs_get_block+0x2259/0x5150 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:1991 reiserfs_write_begin+0x249/0x510 fs/reiserfs/inode.c:2775 generic_cont_expand_simple+0x187/0x2a0 fs/buffer.c:2347 reiserfs_setattr+0x606/0x11c0 fs/reiserfs/inode.c:3305 notify_change+0xce3/0xfc0 fs/attr.c:499 do_truncate+0x21c/0x300 fs/open.c:65 do_sys_ftruncate+0x2e2/0x380 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa954ae2679 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff7186a0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007fff7186a2b8 RCX: 00007fa954ae2679 RDX: 00007fa954ae2679 RSI: 0000000002007ffb RDI: 0000000000000005 RBP: 00007fa954b56610 R08: 00007fff7186a2b8 R09: 00007fff7186a2b8 R10: 00007fff7186a2b8 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff7186a2a8 R14: 0000000000000001 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea0001c835c0 refcount:3 mapcount:0 mapping:ffff8880731b90f8 index:0x0 pfn:0x720d7 memcg:ffff888140058000 aops:reiserfs_address_space_operations ino:2 dentry name:"bus" flags: 0xfff0000000200c(uptodate|dirty|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff0000000200c 0000000000000000 dead000000000122 ffff8880731b90f8 raw: 0000000000000000 ffff8880704211d0 00000003ffffffff ffff888140058000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x141cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_WRITE), pid 3547, tgid 3547 (syz-executor233), ts 58968220156, free_ts 51098659079 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5545 folio_alloc+0x1a/0x50 mm/mempolicy.c:2290 filemap_alloc_folio+0xda/0x4f0 mm/filemap.c:971 __filemap_get_folio+0x749/0xe80 mm/filemap.c:1965 pagecache_get_page+0x28/0x250 mm/folio-compat.c:110 reiserfs_write_begin+0x51/0x510 fs/reiserfs/inode.c:2759 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3754 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3882 generic_file_write_iter+0xab/0x310 mm/filemap.c:3914 call_write_iter include/linux/fs.h:2205 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 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:1440 [inline] free_pcp_prepare mm/page_alloc.c:1490 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358 free_unref_page_list+0x663/0x900 mm/page_alloc.c:3499 release_pages+0x2836/0x2b40 mm/swap.c:1055 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361 unmap_region+0x29f/0x2f0 mm/mmap.c:2319 do_mas_align_munmap+0xec8/0x15f0 mm/mmap.c:2569 do_mas_munmap+0x246/0x2b0 mm/mmap.c:2627 __vm_munmap+0x268/0x370 mm/mmap.c:2904 __do_sys_munmap mm/mmap.c:2929 [inline] __se_sys_munmap mm/mmap.c:2926 [inline] __x64_sys_munmap+0x5c/0x70 mm/mmap.c:2926 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff8880720d6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880720d6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880720d7000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff8880720d7080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880720d7100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================