loop0: detected capacity change from 0 to 1024 EXT4-fs: Ignoring removed mblk_io_submit option EXT4-fs: Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs warning (device loop0): ext4_expand_extra_isize_ea:2858: Unable to expand inode 15. Delete some EAs or run e2fsck. loop0: detected capacity change from 1024 to 64 ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x9c1/0x1e20 fs/ext4/xattr.c:1761 Read of size 18446744073709551600 at addr ffff88800bba52d0 by task syz.0.0/5319 CPU: 0 UID: 0 PID: 5319 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 mm/kasan/report.c:378 [inline] print_report+0xba/0x230 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+0x9c1/0x1e20 fs/ext4/xattr.c:1761 ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2273 ext4_destroy_inline_data_nolock+0x23a/0x5e0 fs/ext4/inline.c:472 ext4_convert_inline_data_to_extent+0x547/0xde0 fs/ext4/inline.c:623 ext4_write_begin+0x357/0x18c0 fs/ext4/inode.c:1300 ext4_da_write_begin+0x355/0xd80 fs/ext4/inode.c:3123 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:300 ext4_file_write_iter+0x298/0x1bf0 fs/ext4/file.c:-1 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_pwrite64 fs/read_write.c:795 [inline] __do_sys_pwrite64 fs/read_write.c:803 [inline] __se_sys_pwrite64 fs/read_write.c:800 [inline] __x64_sys_pwrite64+0x199/0x230 fs/read_write.c:800 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f500df9c799 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:00007f500eecb028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f500e215fa0 RCX: 00007f500df9c799 RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000005 RBP: 00007f500e032bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008000c61 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f500e216038 R14: 00007f500e215fa0 R15: 00007ffe6dbbb078 The buggy address belongs to the physical page: page: refcount:2 mapcount:0 mapping:ffff88801cc25900 index:0x2 pfn:0xbba5 memcg:ffff88801c6c8d40 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0xfff98000004234(referenced|dirty|lru|workingset|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff98000004234 ffffea0000481208 ffffea0000733708 ffff88801cc25900 raw: 0000000000000002 ffff888047ddb000 00000002ffffffff ffff88801c6c8d40 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 5319, tgid 5318 (syz.0.0), ts 85588014439, free_ts 85587251211 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2484 alloc_frozen_pages_noprof mm/mempolicy.c:2555 [inline] alloc_pages_noprof+0xa8/0x190 mm/mempolicy.c:2575 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2585 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1013 __filemap_get_folio_mpol+0x3fc/0xb00 mm/filemap.c:2006 __filemap_get_folio include/linux/pagemap.h:774 [inline] grow_dev_folio fs/buffer.c:1047 [inline] grow_buffers fs/buffer.c:1113 [inline] __getblk_slow fs/buffer.c:1131 [inline] bdev_getblk+0x1f6/0x6e0 fs/buffer.c:1458 __getblk include/linux/buffer_head.h:380 [inline] sb_getblk include/linux/buffer_head.h:386 [inline] __ext4_get_inode_loc+0x528/0xfa0 fs/ext4/inode.c:4787 ext4_get_inode_loc fs/ext4/inode.c:4915 [inline] ext4_reserve_inode_write+0x18b/0x360 fs/ext4/inode.c:6235 __ext4_mark_inode_dirty+0x14b/0x730 fs/ext4/inode.c:6413 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6450 __mark_inode_dirty+0x3a4/0x1470 fs/fs-writeback.c:2609 generic_update_time fs/inode.c:2198 [inline] touch_atime+0x576/0x6b0 fs/inode.c:2273 do_readlinkat+0x205/0x510 fs/stat.c:582 page last free pid 77 tgid 77 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] free_unref_folios+0xed5/0x16d0 mm/page_alloc.c:3040 shrink_folio_list+0x4a6b/0x5290 mm/vmscan.c:1610 evict_folios+0x4795/0x5880 mm/vmscan.c:4718 try_to_shrink_lruvec+0xb62/0xfa0 mm/vmscan.c:4881 shrink_one+0x25c/0x710 mm/vmscan.c:4926 shrink_many mm/vmscan.c:4989 [inline] lru_gen_shrink_node mm/vmscan.c:5067 [inline] shrink_node+0x3197/0x3a90 mm/vmscan.c:6047 kswapd_shrink_node mm/vmscan.c:6894 [inline] balance_pgdat mm/vmscan.c:7070 [inline] kswapd+0x1742/0x2e10 mm/vmscan.c:7343 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 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: ffff88800bba5180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800bba5200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88800bba5280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88800bba5300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800bba5380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================