==================================================================
BUG: KASAN: use-after-free in ext4_xattr_delete_inode+0xc1f/0xc30 fs/ext4/xattr.c:2911
Read of size 4 at addr ffff8881f27c5000 by task syz-executor407/355

CPU: 1 PID: 355 Comm: syz-executor407 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x241 lib/dump_stack.c:118
 print_address_description+0x8c/0x600 mm/kasan/report.c:384
 __kasan_report+0xf3/0x120 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:653
 ext4_xattr_delete_inode+0xc1f/0xc30 fs/ext4/xattr.c:2911
 ext4_evict_inode+0x1378/0x1ac0 fs/ext4/inode.c:318
 evict+0x29b/0x6a0 fs/inode.c:575
 d_delete_notify include/linux/fsnotify.h:224 [inline]
 vfs_rmdir+0x24b/0x3c0 fs/namei.c:4040
 do_rmdir+0x2c1/0x580 fs/namei.c:4088
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f974b88cdc7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 54 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd73f1aa78 EFLAGS: 00000207 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f974b88cdc7
RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007ffd73f1bc20
RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffd73f1bc20
R13: 000055555572f740 R14: 431bde82d7b634db R15: 00007ffd73f1dda0

Allocated by task 379:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2829 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0xd9/0x250 mm/slub.c:2842
 mempool_alloc+0x11f/0x530 mm/mempool.c:393
 bio_alloc_bioset+0x1e0/0x650 block/bio.c:483
 bio_alloc include/linux/bio.h:401 [inline]
 mpage_alloc fs/mpage.c:115 [inline]
 do_mpage_readpage+0x14db/0x1b20 fs/mpage.c:342
 mpage_readpages+0x36e/0x500 fs/mpage.c:440
 read_pages+0x119/0x400 mm/readahead.c:126
 __do_page_cache_readahead+0x448/0x4f0 mm/readahead.c:212
 ra_submit mm/internal.h:62 [inline]
 do_sync_mmap_readahead mm/filemap.c:2580 [inline]
 filemap_fault+0xb5d/0x16b0 mm/filemap.c:2666
 __do_fault mm/memory.c:3259 [inline]
 do_read_fault mm/memory.c:3668 [inline]
 do_fault mm/memory.c:3797 [inline]
 handle_pte_fault mm/memory.c:4028 [inline]
 __handle_mm_fault mm/memory.c:4152 [inline]
 handle_mm_fault+0x344b/0x4990 mm/memory.c:4189
 faultin_page mm/gup.c:654 [inline]
 __get_user_pages+0xc0b/0x13b0 mm/gup.c:874
 populate_vma_page_range mm/gup.c:1279 [inline]
 __mm_populate+0x369/0x510 mm/gup.c:1327
 mm_populate include/linux/mm.h:2489 [inline]
 vm_mmap_pgoff+0x20d/0x260 mm/util.c:533
 ksys_mmap_pgoff+0x168/0x1e0 mm/mmap.c:1631
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1

Freed by task 10:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 kasan_set_free_info mm/kasan/common.c:345 [inline]
 __kasan_slab_free+0x1b5/0x270 mm/kasan/common.c:487
 slab_free_hook mm/slub.c:1455 [inline]
 slab_free_freelist_hook mm/slub.c:1494 [inline]
 slab_free mm/slub.c:3080 [inline]
 kmem_cache_free+0x10b/0x2c0 mm/slub.c:3096
 req_bio_endio block/blk-core.c:246 [inline]
 blk_update_request+0x37f/0xe40 block/blk-core.c:1481
 blk_mq_end_request+0x3a/0x70 block/blk-mq.c:571
 blk_done_softirq+0x2f3/0x390 block/blk-softirq.c:37
 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292

The buggy address belongs to the object at ffff8881f27c5000
 which belongs to the cache bio-0 of size 216
The buggy address is located 0 bytes inside of
 216-byte region [ffff8881f27c5000, ffff8881f27c50d8)
The buggy address belongs to the page:
page:ffffea0007c9f140 refcount:1 mapcount:0 mapping:ffff8881f30c8500 index:0x0
flags: 0x8000000000000200(slab)
raw: 8000000000000200 dead000000000100 dead000000000122 ffff8881f30c8500
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x92880(GFP_NOWAIT|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_NOMEMALLOC)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:2165 [inline]
 prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
 alloc_slab_page+0x39/0x3c0 mm/slub.c:343
 allocate_slab mm/slub.c:1683 [inline]
 new_slab+0x97/0x440 mm/slub.c:1749
 new_slab_objects mm/slub.c:2505 [inline]
 ___slab_alloc+0x2fe/0x490 mm/slub.c:2667
 __slab_alloc+0x62/0xa0 mm/slub.c:2707
 slab_alloc_node mm/slub.c:2792 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0x109/0x250 mm/slub.c:2842
 mempool_alloc+0x11f/0x530 mm/mempool.c:393
 bio_alloc_bioset+0x1e0/0x650 block/bio.c:483
 bio_alloc include/linux/bio.h:401 [inline]
 mpage_alloc fs/mpage.c:115 [inline]
 do_mpage_readpage+0x14db/0x1b20 fs/mpage.c:342
 mpage_readpages+0x36e/0x500 fs/mpage.c:440
 read_pages+0x119/0x400 mm/readahead.c:126
 __do_page_cache_readahead+0x3c6/0x4f0 mm/readahead.c:190
 ra_submit mm/internal.h:62 [inline]
 do_sync_mmap_readahead mm/filemap.c:2580 [inline]
 filemap_fault+0xb5d/0x16b0 mm/filemap.c:2666
 __do_fault mm/memory.c:3259 [inline]
 do_read_fault mm/memory.c:3668 [inline]
 do_fault mm/memory.c:3797 [inline]
 handle_pte_fault mm/memory.c:4028 [inline]
 __handle_mm_fault mm/memory.c:4152 [inline]
 handle_mm_fault+0x344b/0x4990 mm/memory.c:4189
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1176 [inline]
 free_pcp_prepare mm/page_alloc.c:1233 [inline]
 free_unref_page_prepare+0x297/0x380 mm/page_alloc.c:3085
 free_unref_page_list+0x10a/0x590 mm/page_alloc.c:3154
 release_pages+0xad8/0xb20 mm/swap.c:842
 __pagevec_release+0xc3/0x150 mm/swap.c:862
 pagevec_release include/linux/pagevec.h:88 [inline]
 invalidate_mapping_pages+0x96d/0xa50 mm/truncate.c:617
 invalidate_bdev+0x9f/0x140 fs/block_dev.c:99
 ext4_put_super+0x621/0xbb0 fs/ext4/super.c:1042
 generic_shutdown_super+0x120/0x2a0 fs/super.c:464
 kill_block_super+0x7a/0xe0 fs/super.c:1453
 deactivate_locked_super+0xa8/0x110 fs/super.c:335
 deactivate_super+0x1e2/0x2a0 fs/super.c:366
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1102
 task_work_run+0x140/0x170 kernel/task_work.c:113
 ptrace_notify+0x29e/0x350 kernel/signal.c:2271
 ptrace_report_syscall include/linux/tracehook.h:66 [inline]
 tracehook_report_syscall_exit include/linux/tracehook.h:129 [inline]
 syscall_slow_exit_work+0x167/0x400 arch/x86/entry/common.c:246
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x19d/0x1c0 arch/x86/entry/common.c:300

Memory state around the buggy address:
 ffff8881f27c4f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881f27c4f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881f27c5000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8881f27c5080: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
 ffff8881f27c5100: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
==================================================================
EXT4-fs error (device loop0): ext4_xattr_inode_iget:402: comm syz-executor407: inode #1: comm syz-executor407: iget: illegal inode #
EXT4-fs error (device loop0): ext4_xattr_inode_iget:407: comm syz-executor407: error while reading EA inode 1 err=-117
EXT4-fs error (device loop0): ext4_xattr_inode_iget:402: comm syz-executor407: inode #1: comm syz-executor407: iget: illegal inode #
EXT4-fs error (device loop0): ext4_xattr_inode_iget:407: comm syz-executor407: error while reading EA inode 1 err=-117