loop5: detected capacity change from 0 to 512
==================================================================
BUG: KASAN: use-after-free in check_igot_inode+0x187/0x1b0 fs/ext4/inode.c:4664
Read of size 8 at addr ffff888080d17f30 by task syz-executor.5/20120

CPU: 1 PID: 20120 Comm: syz-executor.5 Not tainted 6.7.0-rc5-syzkaller-00200-g3bd7d7488169 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 check_igot_inode+0x187/0x1b0 fs/ext4/inode.c:4664
 __ext4_iget+0x14f5/0x4350 fs/ext4/inode.c:4716
 __ext4_fill_super fs/ext4/super.c:5482 [inline]
 ext4_fill_super+0x67f6/0xaf00 fs/ext4/super.c:5712
 get_tree_bdev+0x3b5/0x650 fs/super.c:1598
 vfs_get_tree+0x8c/0x370 fs/super.c:1771
 do_new_mount fs/namespace.c:3337 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa96ae7e2aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa96bb72ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa96bb72f80 RCX: 00007fa96ae7e2aa
RDX: 00000000200004c0 RSI: 0000000020000500 RDI: 00007fa96bb72f40
RBP: 00000000200004c0 R08: 00007fa96bb72f80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000500
R13: 00007fa96bb72f40 R14: 00000000000004b5 R15: 0000000020000180
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00020345c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2 pfn:0x80d17
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 16857, tgid 16857 (syz-executor.3), ts 2049762505738, free_ts 2209069369613
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312
 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568
 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
 alloc_slab_page mm/slub.c:1870 [inline]
 allocate_slab mm/slub.c:2017 [inline]
 new_slab+0x283/0x3c0 mm/slub.c:2070
 ___slab_alloc+0x979/0x1500 mm/slub.c:3223
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc_lru+0x4a1/0x6f0 mm/slub.c:3509
 alloc_inode_sb include/linux/fs.h:2937 [inline]
 ext4_alloc_inode+0x28/0x650 fs/ext4/super.c:1408
 alloc_inode+0x5d/0x220 fs/inode.c:261
 new_inode_pseudo fs/inode.c:1006 [inline]
 new_inode+0x22/0x260 fs/inode.c:1032
 __ext4_new_inode+0x333/0x5200 fs/ext4/ialloc.c:958
 ext4_symlink+0x5d7/0xa20 fs/ext4/namei.c:3398
 vfs_symlink fs/namei.c:4464 [inline]
 vfs_symlink+0x3e5/0x620 fs/namei.c:4448
 do_symlinkat+0x25f/0x310 fs/namei.c:4490
 __do_sys_symlinkat fs/namei.c:4506 [inline]
 __se_sys_symlinkat fs/namei.c:4503 [inline]
 __x64_sys_symlinkat+0x97/0xc0 fs/namei.c:4503
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:763 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x15d/0x2f0 mm/slub.c:3502
 getname_flags.part.0+0x50/0x4e0 fs/namei.c:140
 getname_flags include/linux/audit.h:321 [inline]
 getname fs/namei.c:219 [inline]
 __do_sys_unlink fs/namei.c:4430 [inline]
 __se_sys_unlink fs/namei.c:4428 [inline]
 __x64_sys_unlink+0xb3/0x110 fs/namei.c:4428
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Memory state around the buggy address:
 ffff888080d17e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888080d17e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888080d17f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                     ^
 ffff888080d17f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888080d18000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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