loop0: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed nobh option EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode EXT4-fs warning (device loop0): ext4_expand_extra_isize_ea:2860: Unable to expand inode 15. Delete some EAs or run e2fsck. EXT4-fs (loop0): 1 truncate cleaned up EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop0: detected capacity change from 512 to 505 EXT4-fs error (device loop0): ext4_xattr_block_get:597: inode #15: comm syz.0.0: corrupted xattr block 33: invalid header ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1763 Read of size 18446744073709551600 at addr ffff88801ad7d2b8 by task syz.0.0/5334 CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description+0x55/0x1e0 mm/kasan/report.c:378 print_report+0x58/0x70 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1763 ext4_xattr_ibody_set+0x262/0x710 fs/ext4/xattr.c:2275 ext4_destroy_inline_data_nolock+0x23a/0x5f0 fs/ext4/inline.c:472 ext4_convert_inline_data_to_extent+0x549/0xde0 fs/ext4/inline.c:631 ext4_write_begin+0x349/0x1850 fs/ext4/inode.c:1315 generic_perform_write+0x2d5/0x8f0 mm/filemap.c:4358 ext4_buffered_write_iter+0xcb/0x370 fs/ext4/file.c:316 ext4_file_write_iter+0x947/0x1c70 fs/ext4/file.c:-1 aio_write+0x5cd/0x870 fs/aio.c:1687 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x798/0x13d0 fs/aio.c:2106 __do_sys_io_submit fs/aio.c:2165 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2135 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac6b19e019 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:00007fac6bfddfe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fac6b425fa0 RCX: 00007fac6b19e019 RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fac6bf94000 RBP: 00007fac6b23500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fac6b426038 R14: 00007fac6b425fa0 R15: 00007ffd46febb78 The buggy address belongs to the physical page: page: refcount:3 mapcount:0 mapping:ffff88801d02d940 index:0x2 pfn:0x1ad7d memcg:ffff888044478c00 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0xfff18000004214(referenced|dirty|workingset|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff18000004214 0000000000000000 dead000000000122 ffff88801d02d940 raw: 0000000000000002 ffff888044156ee0 00000003ffffffff ffff888044478c00 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_MOVABLE|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL), pid 5334, tgid 5333 (syz.0.0), ts 114779131443, free_ts 114774620795 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859 prep_new_page mm/page_alloc.c:1867 [inline] get_page_from_freelist+0x21fa/0x2270 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304 alloc_pages_mpol+0x212/0x380 mm/mempolicy.c:2490 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline] alloc_pages_noprof+0xac/0x2a0 mm/mempolicy.c:2581 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2591 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1013 __filemap_get_folio_mpol+0x402/0x1000 mm/filemap.c:2012 __filemap_get_folio include/linux/pagemap.h:761 [inline] grow_dev_folio fs/buffer.c:960 [inline] grow_buffers fs/buffer.c:1026 [inline] __getblk_slow fs/buffer.c:1044 [inline] bdev_getblk+0x1f4/0x6e0 fs/buffer.c:1439 __getblk include/linux/buffer_head.h:382 [inline] sb_getblk include/linux/buffer_head.h:388 [inline] __ext4_get_inode_loc+0x56c/0xf40 fs/ext4/inode.c:4891 ext4_get_inode_loc+0x81/0xf0 fs/ext4/inode.c:5019 ext4_xattr_ibody_get+0x113/0x4b0 fs/ext4/xattr.c:648 ext4_xattr_get+0x121/0x690 fs/ext4/xattr.c:709 __vfs_getxattr+0x412/0x440 fs/xattr.c:446 cap_inode_need_killpriv+0x45/0x60 security/commoncap.c:331 security_inode_need_killpriv+0x85/0x240 security/security.c:2186 page last free pid 75 tgid 75 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1406 [inline] free_unref_folios+0xd84/0x14a0 mm/page_alloc.c:3011 shrink_folio_list+0x4b16/0x5330 mm/vmscan.c:1582 evict_folios+0x3821/0x49e0 mm/vmscan.c:4834 try_to_shrink_lruvec+0xb4f/0xed0 mm/vmscan.c:4983 shrink_one+0x233/0x730 mm/vmscan.c:5024 shrink_many mm/vmscan.c:5087 [inline] lru_gen_shrink_node mm/vmscan.c:5165 [inline] shrink_node+0x3303/0x3b60 mm/vmscan.c:6154 kswapd_shrink_node mm/vmscan.c:7008 [inline] balance_pgdat mm/vmscan.c:7186 [inline] kswapd+0x17b6/0x31c0 mm/vmscan.c:7462 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff88801ad7d180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88801ad7d200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88801ad7d280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88801ad7d300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88801ad7d380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================