loop0: detected capacity change from 0 to 512 ======================================================= 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. ======================================================= EXT4-fs (loop0): Test dummy encryption mode enabled EXT4-fs error (device loop0): ext4_free_branches:1023: inode #11: comm syz.0.0: invalid indirect mapped block 4294967295 (level 1) loop0: lost file I/O error report for ino 11 type 5 pos 0x0 len 0x0 error -117 EXT4-fs error (device loop0): ext4_free_branches:1023: inode #11: comm syz.0.0: invalid indirect mapped block 4294967295 (level 1) loop0: lost file I/O error report for ino 11 type 5 pos 0x0 len 0x0 error -117 EXT4-fs (loop0): 2 truncates cleaned up EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. netlink: 'syz.0.0': attribute type 1 has an invalid length. netlink: 224 bytes leftover after parsing attributes in process `syz.0.0'. fscrypt: AES-256-XTS using implementation "xts-aes-aesni-avx" loop0: detected capacity change from 512 to 0 EXT4-fs error (device loop0): ext4_get_inode_loc:5023: inode #15: block 8: comm syz.0.0: unable to read itable block Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0): ext4_get_inode_loc:5023: inode #15: block 8: comm syz.0.0: unable to read itable block Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0) in ext4_reserve_inode_write:6383: IO failure Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0): ext4_dirty_inode:6587: inode #15: comm syz.0.0: mark_inode_dirty error EXT4-fs (loop0): previous I/O error to superblock detected Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0): ext4_get_inode_loc:5023: inode #15: block 8: comm syz.0.0: unable to read itable block Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0): ext4_check_bdev_write_error:227: comm syz.0.0: Error while async write back metadata ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x9c1/0x1e20 fs/ext4/xattr.c:1763 Read of size 18446744073709551600 at addr ffff888054d352b8 by task syz.0.0/5337 CPU: 0 UID: 0 PID: 5337 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+0x9c1/0x1e20 fs/ext4/xattr.c:1763 ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2275 ext4_destroy_inline_data_nolock+0x23a/0x5e0 fs/ext4/inline.c:472 ext4_destroy_inline_data+0x83/0xe0 fs/ext4/inline.c:1806 ext4_do_writepages+0x51e/0x4670 fs/ext4/inode.c:2827 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3042 do_writepages+0x32e/0x550 mm/page-writeback.c:2571 filemap_writeback mm/filemap.c:388 [inline] filemap_fdatawrite_range mm/filemap.c:413 [inline] file_write_and_wait_range+0x36e/0x440 mm/filemap.c:787 mmb_fsync_noflush+0x76/0x1c0 fs/buffer.c:645 ext4_fsync_nojournal fs/ext4/fsync.c:92 [inline] ext4_sync_file+0x437/0xd50 fs/ext4/fsync.c:160 generic_write_sync include/linux/fs.h:2654 [inline] ext4_buffered_write_iter+0x2ca/0x3a0 fs/ext4/file.c:322 ext4_file_write_iter+0x298/0x1bf0 fs/ext4/file.c:-1 aio_write+0x5cd/0x870 fs/aio.c:1688 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x7bb/0x14c0 fs/aio.c:2107 __do_sys_io_submit fs/aio.c:2166 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2136 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: 0033:0x7f21cfb9ce59 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:00007f21d0a97fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f21cfe15fa0 RCX: 00007f21cfb9ce59 RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f21d0a4e000 RBP: 00007f21cfc32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f21cfe16038 R14: 00007f21cfe15fa0 R15: 00007fff02500688 The buggy address belongs to the physical page: page: refcount:3 mapcount:0 mapping:ffff88801cc25940 index:0x2 pfn:0x54d35 memcg:ffff888037e2ac80 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0x4fff18000004214(referenced|dirty|workingset|private|node=1|zone=1|lastcpupid=0x7ff) raw: 04fff18000004214 0000000000000000 dead000000000122 ffff88801cc25940 raw: 0000000000000002 ffff8880474491d0 00000003ffffffff ffff888037e2ac80 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 5337, tgid 5336 (syz.0.0), ts 85922550603, free_ts 85922477908 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853 prep_new_page mm/page_alloc.c:1861 [inline] get_page_from_freelist+0x2593/0x2610 mm/page_alloc.c:3941 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221 alloc_pages_mpol+0x235/0x490 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:1014 __filemap_get_folio_mpol+0x3fc/0xb00 mm/filemap.c:2012 __filemap_get_folio include/linux/pagemap.h:763 [inline] grow_dev_folio fs/buffer.c:954 [inline] grow_buffers fs/buffer.c:1020 [inline] __getblk_slow fs/buffer.c:1038 [inline] bdev_getblk+0x1f6/0x6e0 fs/buffer.c:1358 __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:4890 ext4_get_inode_loc+0x81/0xf0 fs/ext4/inode.c:5018 ext4_generic_write_inline_data+0xe3/0xcd0 fs/ext4/inline.c:708 ext4_da_write_begin+0x527/0xd60 fs/ext4/inode.c:3159 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4325 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:316 ext4_file_write_iter+0x298/0x1bf0 fs/ext4/file.c:-1 page last free pid 5338 tgid 5336 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1397 [inline] free_unref_folios+0xd9f/0x14c0 mm/page_alloc.c:2999 folios_put_refs+0x9ff/0xb40 mm/swap.c:1008 folio_batch_release include/linux/folio_batch.h:101 [inline] mapping_try_invalidate+0x3c2/0x4c0 mm/truncate.c:579 loop_set_status+0x29b/0xe40 drivers/block/loop.c:1246 loop_set_status_old drivers/block/loop.c:1362 [inline] lo_ioctl+0xce6/0x1fb0 drivers/block/loop.c:1551 blkdev_ioctl+0x5e3/0x740 block/ioctl.c:797 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 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 Memory state around the buggy address: ffff888054d35180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888054d35200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888054d35280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888054d35300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888054d35380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================