EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: none. ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x13ba/0x3940 fs/ext4/xattr.c:1736 Read of size 18446744073709551600 at addr ffff88812c441eb8 by task syz.1.22/393 CPU: 1 PID: 393 Comm: syz.1.22 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0xf1/0x140 mm/kasan/report.c:444 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x13ba/0x3940 fs/ext4/xattr.c:1736 ext4_xattr_ibody_set+0x122/0x360 fs/ext4/xattr.c:2238 ext4_destroy_inline_data_nolock+0x234/0x5d0 fs/ext4/inline.c:468 ext4_convert_inline_data_nolock+0x3af/0xcd0 fs/ext4/inline.c:1271 ext4_convert_inline_data+0x4b9/0x5f0 fs/ext4/inline.c:2112 ext4_fallocate+0xfd/0x1de0 fs/ext4/extents.c:4765 vfs_fallocate+0x4b4/0x590 fs/open.c:309 ksys_fallocate fs/open.c:332 [inline] __do_sys_fallocate fs/open.c:340 [inline] __se_sys_fallocate fs/open.c:338 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:338 x64_sys_call+0x7ec/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:286 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f503f65cdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f503e0b7028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f503f8d5fa0 RCX: 00007f503f65cdd9 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f503f6f2d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000002000402 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f503f8d6038 R14: 00007f503f8d5fa0 R15: 00007ffd961bc358 The buggy address belongs to the page: page:ffffea0004b11040 refcount:6 mapcount:1 mapping:ffff8881092c2c98 index:0x13 pfn:0x12c441 memcg:ffff888100256780 aops:def_blk_aops ino:700001 flags: 0x4000000000022014(uptodate|lru|private|mappedtodisk|zone=1) raw: 4000000000022014 ffffea0004b11088 ffffea0004b11008 ffff8881092c2c98 raw: 0000000000000013 ffff88810d0780a8 0000000600000000 ffff888100256780 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 393, ts 27326287318, free_ts 27320394722 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x2d3a/0x2dc0 mm/page_alloc.c:4485 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5822 __alloc_pages_node include/linux/gfp.h:595 [inline] alloc_pages_node include/linux/gfp.h:609 [inline] alloc_pages include/linux/gfp.h:622 [inline] __page_cache_alloc include/linux/pagemap.h:305 [inline] page_cache_ra_unbounded+0x2d5/0x9a0 mm/readahead.c:227 do_page_cache_ra+0xf2/0x110 mm/readahead.c:280 do_sync_mmap_readahead+0x699/0x960 mm/filemap.c:3018 filemap_fault+0xb32/0x1770 mm/filemap.c:3161 __do_fault+0x264/0x2f0 mm/memory.c:4192 do_read_fault mm/memory.c:4556 [inline] do_fault mm/memory.c:4697 [inline] handle_pte_fault+0x187d/0x2710 mm/memory.c:4911 __handle_mm_fault mm/memory.c:-1 [inline] do_handle_mm_fault+0x1af9/0x1de0 mm/memory.c:5333 handle_mm_fault include/linux/mm.h:1847 [inline] faultin_page mm/gup.c:976 [inline] __get_user_pages+0x80e/0x10c0 mm/gup.c:1197 populate_vma_page_range mm/gup.c:1529 [inline] __mm_populate+0x324/0x470 mm/gup.c:1638 mm_populate include/linux/mm.h:2704 [inline] vm_mmap_pgoff+0x262/0x430 mm/util.c:560 ksys_mmap_pgoff+0x161/0x1d0 mm/mmap.c:1647 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:93 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __x64_sys_mmap+0xfa/0x110 arch/x86/kernel/sys_x86_64.c:86 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1472 [inline] free_pcp_prepare mm/page_alloc.c:1544 [inline] free_unref_page_prepare+0x542/0x550 mm/page_alloc.c:3534 free_unref_page+0xae/0x540 mm/page_alloc.c:3616 free_the_page mm/page_alloc.c:805 [inline] __free_pages+0x6c/0x100 mm/page_alloc.c:5898 free_pages+0x82/0x90 mm/page_alloc.c:5909 kasan_depopulate_vmalloc_pte+0x6b/0x90 mm/kasan/shadow.c:354 apply_to_pte_range mm/memory.c:2643 [inline] apply_to_pmd_range mm/memory.c:2687 [inline] apply_to_pud_range mm/memory.c:2723 [inline] apply_to_p4d_range mm/memory.c:2759 [inline] __apply_to_page_range+0x8cd/0xc70 mm/memory.c:2795 apply_to_existing_page_range+0x38/0x50 mm/memory.c:2828 kasan_release_vmalloc+0x97/0xb0 mm/kasan/shadow.c:464 __purge_vmap_area_lazy+0xa93/0x18a0 mm/vmalloc.c:1723 _vm_unmap_aliases+0x2fd/0x380 mm/vmalloc.c:2126 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:2149 change_page_attr_set_clr+0x323/0xca0 arch/x86/mm/pat/set_memory.c:1740 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline] set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1943 bpf_jit_binary_lock_ro include/linux/filter.h:919 [inline] bpf_int_jit_compile+0xc6c3/0xcd60 arch/x86/net/bpf_jit_comp.c:2478 bpf_prog_select_runtime+0x6f1/0x9f0 kernel/bpf/core.c:1947 bpf_prog_load+0x10f3/0x1640 kernel/bpf/syscall.c:2332 Memory state around the buggy address: ffff88812c441d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88812c441e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88812c441e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88812c441f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88812c441f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs warning (device loop1): ext4_xattr_set_entry:1749: inode #15: comm syz.1.22: unable to update i_inline_off