loop0: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed nobh option EXT4-fs: Ignoring removed orlov 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:2853: 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. ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= loop0: detected capacity change from 512 to 511 EXT4-fs error (device loop0): ext4_xattr_block_get:597: inode #15: comm syz.0.0: corrupted xattr block 33: invalid header 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+0x9c1/0x1e20 fs/ext4/xattr.c:1756 Read of size 18446744073709551600 at addr ffff88800092a300 by task syz.0.0/5330 CPU: 0 UID: 0 PID: 5330 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~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 ext4_xattr_set_entry+0x9c1/0x1e20 fs/ext4/xattr.c:1756 ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2268 ext4_destroy_inline_data_nolock+0x214/0x5b0 fs/ext4/inline.c:463 ext4_convert_inline_data_to_extent+0x540/0xdd0 fs/ext4/inline.c:613 ext4_write_begin+0x382/0x19a0 fs/ext4/inode.c:1302 generic_perform_write+0x2c5/0x900 mm/filemap.c:4254 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:299 ext4_file_write_iter+0x298/0x1bc0 fs/ext4/file.c:-1 do_iter_readv_writev+0x623/0x8c0 fs/read_write.c:-1 vfs_writev+0x31a/0x960 fs/read_write.c:1057 do_pwritev fs/read_write.c:1153 [inline] __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2+0x179/0x290 fs/read_write.c:1202 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f303b38f6c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f303c312038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f303b5e5fa0 RCX: 00007f303b38f6c9 RDX: 0000000000000001 RSI: 00002000000000c0 RDI: 000000000000000c RBP: 00007f303b411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000800001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f303b5e6038 R14: 00007f303b5e5fa0 R15: 00007ffec274b218 The buggy address belongs to the physical page: page: refcount:2 mapcount:0 mapping:ffff888031c6cd80 index:0x2 pfn:0x92a memcg:ffff88801bae8d00 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0x7ff58000004234(referenced|dirty|lru|workingset|private|node=0|zone=0|lastcpupid=0x7ff) raw: 007ff58000004234 ffffea000001eac8 ffff88801baf8a70 ffff888031c6cd80 raw: 0000000000000002 ffff888042a963a0 00000002ffffffff ffff88801bae8d00 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 5330, tgid 5329 (syz.0.0), ts 86292820571, free_ts 86156319829 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline] alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2517 filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1020 __filemap_get_folio+0x3f2/0xaf0 mm/filemap.c:2012 grow_dev_folio fs/buffer.c:1050 [inline] grow_buffers fs/buffer.c:1116 [inline] __getblk_slow fs/buffer.c:1134 [inline] bdev_getblk+0x1ad/0x660 fs/buffer.c:1461 __getblk include/linux/buffer_head.h:380 [inline] sb_getblk include/linux/buffer_head.h:386 [inline] __ext4_get_inode_loc+0x561/0x1040 fs/ext4/inode.c:4837 ext4_get_inode_loc fs/ext4/inode.c:4965 [inline] ext4_reserve_inode_write+0x18b/0x360 fs/ext4/inode.c:6302 __ext4_mark_inode_dirty+0x15b/0x700 fs/ext4/inode.c:6480 ext4_setattr+0x161c/0x1bc0 fs/ext4/inode.c:5999 notify_change+0xc1a/0xf40 fs/attr.c:546 do_truncate+0x1a4/0x220 fs/open.c:68 do_ftruncate+0x489/0x540 fs/open.c:195 page last free pid 79 tgid 79 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] free_unref_folios+0xdb3/0x14f0 mm/page_alloc.c:2963 shrink_folio_list+0x44ab/0x4c70 mm/vmscan.c:1638 evict_folios+0x471e/0x57c0 mm/vmscan.c:4745 try_to_shrink_lruvec+0x8a3/0xb50 mm/vmscan.c:4908 shrink_one+0x21b/0x7c0 mm/vmscan.c:4953 shrink_many mm/vmscan.c:5016 [inline] lru_gen_shrink_node mm/vmscan.c:5094 [inline] shrink_node+0x315d/0x3780 mm/vmscan.c:6081 kswapd_shrink_node mm/vmscan.c:6941 [inline] balance_pgdat mm/vmscan.c:7124 [inline] kswapd+0x147c/0x2800 mm/vmscan.c:7389 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 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: ffff88800092a200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800092a280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88800092a300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88800092a380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800092a400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================