REISERFS (device loop2): Using r5 hash to sort names ================================================================== BUG: KASAN: out-of-bounds in memmove include/linux/fortify-string.h:241 [inline] BUG: KASAN: out-of-bounds in leaf_paste_entries+0x449/0x910 fs/reiserfs/lbalance.c:1377 Read of size 18446744073709551584 at addr ffff888061ee2fa4 by task syz-executor.2/7951 CPU: 0 PID: 7951 Comm: syz-executor.2 Not tainted 5.15.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memmove+0x20/0x60 mm/kasan/shadow.c:54 memmove include/linux/fortify-string.h:241 [inline] leaf_paste_entries+0x449/0x910 fs/reiserfs/lbalance.c:1377 balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline] balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline] balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline] balance_leaf+0x951e/0xd8b0 fs/reiserfs/do_balan.c:1452 do_balance+0x315/0x810 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x762/0x8e0 fs/reiserfs/stree.c:2159 reiserfs_add_entry+0x8cb/0xcf0 fs/reiserfs/namei.c:567 reiserfs_mkdir+0x675/0x980 fs/reiserfs/namei.c:860 create_privroot fs/reiserfs/xattr.c:889 [inline] reiserfs_xattr_init+0x4de/0xb60 fs/reiserfs/xattr.c:1012 reiserfs_fill_super+0x21ea/0x2f80 fs/reiserfs/super.c:2175 mount_bdev+0x34d/0x410 fs/super.c:1370 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __ia32_sys_mount+0x27e/0x300 fs/namespace.c:3516 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6f54549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f454e440 EFLAGS: 00000296 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f454e4b0 RCX: 0000000020000100 RDX: 0000000020000000 RSI: 0000000000000000 RDI: 00000000f454e4f0 RBP: 00000000f454e4f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the page: page:ffffea000187b880 refcount:3 mapcount:0 mapping:ffff8880159ce6c0 index:0x213 pfn:0x61ee2 memcg:ffff8880145bc000 aops:def_blk_aops ino:700002 flags: 0x4fff00000002022(referenced|active|private|node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000002022 0000000000000000 dead000000000122 ffff8880159ce6c0 raw: 0000000000000213 ffff88802488b9f8 00000003ffffffff ffff8880145bc000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 7951, ts 2598921230596, free_ts 2598919631400 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191 folio_alloc+0x1c/0x70 mm/mempolicy.c:2201 filemap_alloc_folio mm/filemap.c:1036 [inline] __filemap_get_folio+0x5f2/0xd60 mm/filemap.c:1951 pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125 find_or_create_page include/linux/pagemap.h:440 [inline] grow_dev_page fs/buffer.c:949 [inline] grow_buffers fs/buffer.c:1014 [inline] __getblk_slow+0x1ed/0xae0 fs/buffer.c:1041 __getblk_gfp+0x6e/0x80 fs/buffer.c:1334 sb_getblk include/linux/buffer_head.h:327 [inline] search_by_key+0x3a5/0x3cc0 fs/reiserfs/stree.c:672 search_by_entry_key+0x32/0x960 fs/reiserfs/namei.c:125 reiserfs_find_entry.part.0+0x139/0xdf0 fs/reiserfs/namei.c:322 reiserfs_find_entry fs/reiserfs/namei.c:368 [inline] reiserfs_lookup+0x24a/0x490 fs/reiserfs/namei.c:368 __lookup_slow+0x24c/0x480 fs/namei.c:1657 lookup_one_len+0x16a/0x1a0 fs/namei.c:2686 reiserfs_lookup_privroot+0x92/0x280 fs/reiserfs/xattr.c:980 reiserfs_fill_super+0x21a8/0x2f80 fs/reiserfs/super.c:2174 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x374/0x870 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page_list+0x1a9/0xfa0 mm/page_alloc.c:3425 release_pages+0x3f4/0x1480 mm/swap.c:979 __pagevec_release+0x77/0x100 mm/swap.c:999 pagevec_release include/linux/pagevec.h:81 [inline] shmem_undo_range+0x749/0x16d0 mm/shmem.c:957 shmem_truncate_range mm/shmem.c:1056 [inline] shmem_evict_inode+0x3a4/0xbd0 mm/shmem.c:1138 evict+0x2ed/0x6b0 fs/inode.c:592 iput_final fs/inode.c:1672 [inline] iput.part.0+0x539/0x850 fs/inode.c:1698 iput+0x58/0x70 fs/inode.c:1688 dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:376 __dentry_kill+0x3c0/0x640 fs/dcache.c:582 dentry_kill fs/dcache.c:720 [inline] dput+0x669/0xbc0 fs/dcache.c:888 __fput+0x3ab/0x9f0 fs/file_table.c:293 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 Memory state around the buggy address: ffff888061ee2e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888061ee2f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888061ee2f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888061ee3000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888061ee3080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi