EXT4-fs error (device loop2): ext4_update_inline_data:358: inode #15: comm syz.2.1044: missing inline data xattr EXT4-fs error (device loop2): ext4_lookup:1862: inode #2: comm syz.2.1044: deleted inode referenced: 12 ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x11db/0x3a80 fs/ext4/xattr.c:1736 Read of size 18446744073709551600 at addr ffff88811b0a8eb8 by task syz.2.1044/3744 CPU: 0 PID: 3744 Comm: syz.2.1044 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 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+0x10f/0x150 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+0x11db/0x3a80 fs/ext4/xattr.c:1736 ext4_xattr_ibody_set+0x114/0x330 fs/ext4/xattr.c:2238 ext4_destroy_inline_data_nolock+0x234/0x5e0 fs/ext4/inline.c:468 ext4_convert_inline_data_nolock+0x3df/0xcd0 fs/ext4/inline.c:1271 ext4_convert_inline_data+0x470/0x5b0 fs/ext4/inline.c:2112 ext4_fallocate+0xfa/0x1de0 fs/ext4/extents.c:4775 vfs_fallocate+0x4b9/0x590 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: 0033:0x7fb59ee77e59 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:00007fb59d8d1028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fb59f0fffa0 RCX: 00007fb59ee77e59 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007fb59ef0de6f R08: 0000000000000000 R09: 0000000000000000 R10: 000000000008ffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb59f100038 R14: 00007fb59f0fffa0 R15: 00007ffe94ae2078 The buggy address belongs to the page: page:ffffea00046c2a00 refcount:3 mapcount:1 mapping:ffff888109305b18 index:0x8 pfn:0x11b0a8 memcg:ffff888100254500 aops:def_blk_aops ino:700002 flags: 0x4000000000022036(referenced|uptodate|lru|active|private|mappedtodisk|zone=1) raw: 4000000000022036 ffffea00047ae7c8 ffffea000471f048 ffff888109305b18 raw: 0000000000000008 ffff8881298192a0 0000000300000000 ffff888100254500 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 2684, ts 143128298807, free_ts 142975141603 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824 __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+0x2bc/0x960 mm/readahead.c:227 do_page_cache_ra mm/readahead.c:280 [inline] force_page_cache_ra+0x406/0x460 mm/readahead.c:312 page_cache_sync_ra+0x30f/0x5a0 mm/readahead.c:592 page_cache_sync_readahead include/linux/pagemap.h:831 [inline] filemap_get_pages mm/filemap.c:2571 [inline] filemap_read+0x68b/0x21e0 mm/filemap.c:2656 generic_file_read_iter+0xac/0x420 mm/filemap.c:2816 blkdev_read_iter+0x12f/0x160 block/fops.c:563 call_read_iter include/linux/fs.h:2206 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0x6c0/0xc20 fs/read_write.c:485 ksys_read+0x14a/0x260 fs/read_write.c:623 __do_sys_read fs/read_write.c:633 [inline] __se_sys_read fs/read_write.c:631 [inline] __x64_sys_read+0x7b/0x90 fs/read_write.c:631 x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1 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 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1474 [inline] free_pcp_prepare mm/page_alloc.c:1546 [inline] free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3536 free_unref_page_list+0x138/0x9e0 mm/page_alloc.c:3673 release_pages+0x1264/0x12c0 mm/swap.c:1015 __pagevec_release+0x71/0xe0 mm/swap.c:1035 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x358/0xe50 mm/truncate.c:332 truncate_inode_pages+0x24/0x30 mm/truncate.c:428 kill_bdev block/bdev.c:80 [inline] blkdev_flush_mapping+0x188/0x360 block/bdev.c:663 blkdev_put_whole block/bdev.c:694 [inline] blkdev_put+0x494/0x7a0 block/bdev.c:961 kill_block_super+0xb8/0xf0 fs/super.c:1430 kill_f2fs_super+0x30a/0x3d0 fs/f2fs/super.c:4740 deactivate_locked_super+0xa0/0x100 fs/super.c:335 deactivate_super+0xaf/0xe0 fs/super.c:366 cleanup_mnt+0x44f/0x500 fs/namespace.c:1149 __cleanup_mnt+0x19/0x20 fs/namespace.c:1156 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 Memory state around the buggy address: ffff88811b0a8d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88811b0a8e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88811b0a8e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88811b0a8f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88811b0a8f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs error (device loop2): ext4_read_block_bitmap_nowait:476: comm syz.2.1044: Invalid block bitmap block 0 in block_group 0