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+0x1bc/0xab0 fs/reiserfs/lbalance.c:1017 Read of size 18446744073709551305 at addr ffff888066ce4000 by task syz-executor.0/5410 CPU: 1 PID: 5410 Comm: syz-executor.0 Not tainted 6.4.0-rc7-syzkaller #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:2064 reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2773 generic_cont_expand_simple+0x18b/0x2a0 fs/buffer.c:2425 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+0x2e4/0x380 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8027e8c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f8028b30168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007f8027fabf80 RCX: 00007f8027e8c389 RDX: 0000000000000000 RSI: 0000000002007fff RDI: 0000000000000004 RBP: 00007f8027ed7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc9b35c1df R14: 00007f8028b30300 R15: 0000000000022000 The buggy address belongs to the physical page: page:ffffea00019b3900 refcount:1 mapcount:1 mapping:0000000000000000 index:0x7f8027fa8 pfn:0x66ce4 memcg:ffff888069f30000 anon flags: 0xfff000000a0014(uptodate|lru|mappedtodisk|swapbacked|node=0|zone=1|lastcpupid=0x7ff) page_type: 0x0() raw: 00fff000000a0014 ffffea00019ca088 ffff88807cc4f000 ffff88801e3ef441 raw: 00000007f8027fa8 0000000000000000 0000000100000000 ffff888069f30000 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 5409, tgid 5409 (syz-executor.0), ts 80099733932, free_ts 13955494244 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768 __folio_alloc+0x13/0x30 mm/page_alloc.c:4800 vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2240 wp_page_copy mm/memory.c:3074 [inline] do_wp_page+0xb3b/0x3640 mm/memory.c:3432 handle_pte_fault mm/memory.c:4964 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x18f4/0x2e30 mm/memory.c:5243 do_user_addr_fault arch/x86/mm/fault.c:1349 [inline] handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x274/0x900 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x8fe/0xa10 mm/page_alloc.c:2564 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659 free_contig_range+0x9e/0x150 mm/page_alloc.c:6994 destroy_args+0x102/0x9a0 mm/debug_vm_pgtable.c:1023 debug_vm_pgtable+0x405/0x490 mm/debug_vm_pgtable.c:1403 do_one_initcall+0x23d/0x7d0 init/main.c:1246 do_initcall_level+0x157/0x210 init/main.c:1319 do_initcalls+0x3f/0x80 init/main.c:1335 kernel_init_freeable+0x43b/0x5d0 init/main.c:1571 kernel_init+0x1d/0x2a0 init/main.c:1462 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff888066ce3f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888066ce3f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888066ce4000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888066ce4080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888066ce4100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================