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BUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49
Read of size 8 at addr ffff8880207b3ac0 by task syz-executor.3/15861

CPU: 1 PID: 15861 Comm: syz-executor.3 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #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+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:488
 kasan_report+0x142/0x170 mm/kasan/report.c:601
 f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49
 __do_fault+0x131/0x450 mm/memory.c:4376
 do_shared_fault mm/memory.c:4798 [inline]
 do_fault mm/memory.c:4872 [inline]
 do_pte_missing mm/memory.c:3745 [inline]
 handle_pte_fault mm/memory.c:5144 [inline]
 __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285
 handle_mm_fault+0x27e/0x770 mm/memory.c:5450
 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
 handle_page_fault arch/x86/mm/fault.c:1507 [inline]
 exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f5c4725de2b
Code: fa 10 73 2d 83 fa 08 73 46 83 fa 04 73 16 83 fa 01 7c 10 8a 0e 74 0a 0f b7 74 16 fe 66 89 74 17 fe 88 0f c3 8b 4c 16 fc 8b 36 <89> 4c 17 fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5
RSP: 002b:00007ffdf07e7318 EFLAGS: 00010202
RAX: 00000000200000c0 RBX: 00007ffdf07e7428 RCX: 0000000000737562
RDX: 0000000000000006 RSI: 0000000075622f2e RDI: 00000000200000c0
RBP: 0000000000000048 R08: 00007f5c47200000 R09: 00007f5c473ac12c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5c46e0c708
R13: fffffffffffffffe R14: 00007f5c46e00000 R15: 00007f5c46e0c710
 </TASK>

Allocated by task 15864:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x70 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:314 [inline]
 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:340
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 kmem_cache_alloc+0x16f/0x340 mm/slub.c:3867
 vm_area_alloc+0x24/0x1d0 kernel/fork.c:465
 mmap_region+0xbd8/0x1f90 mm/mmap.c:2804
 do_mmap+0x76b/0xde0 mm/mmap.c:1379
 vm_mmap_pgoff+0x1e2/0x420 mm/util.c:556
 ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1425
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Freed by task 15895:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x70 mm/kasan/common.c:68
 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:634
 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241
 __kasan_slab_free+0x34/0x60 mm/kasan/common.c:257
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2121 [inline]
 slab_free mm/slub.c:4299 [inline]
 kmem_cache_free+0x102/0x2a0 mm/slub.c:4363
 rcu_do_batch kernel/rcu/tree.c:2158 [inline]
 rcu_core+0xad8/0x17c0 kernel/rcu/tree.c:2433
 __do_softirq+0x2b8/0x939 kernel/softirq.c:553

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xae/0x100 mm/kasan/generic.c:580
 __call_rcu_common kernel/rcu/tree.c:2683 [inline]
 call_rcu+0x167/0xa80 kernel/rcu/tree.c:2797
 remove_vma mm/mmap.c:148 [inline]
 remove_mt mm/mmap.c:2283 [inline]
 do_vmi_align_munmap+0x159d/0x1930 mm/mmap.c:2629
 do_vmi_munmap+0x24d/0x2d0 mm/mmap.c:2693
 mmap_region+0x677/0x1f90 mm/mmap.c:2744
 do_mmap+0x76b/0xde0 mm/mmap.c:1379
 vm_mmap_pgoff+0x1e2/0x420 mm/util.c:556
 ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1425
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

The buggy address belongs to the object at ffff8880207b3aa0
 which belongs to the cache vm_area_struct of size 192
The buggy address is located 32 bytes inside of
 freed 192-byte region [ffff8880207b3aa0, ffff8880207b3b60)

The buggy address belongs to the physical page:
page:ffffea000081ecc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x207b3
memcg:ffff888022962f01
anon flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff8880142a1b40 0000000000000000 dead000000000001
raw: 0000000000000000 00000000000f000f 00000001ffffffff ffff888022962f01
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 10796, tgid 10796 (udevadm), ts 290508564535, free_ts 290494237919
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3311
 __alloc_pages+0x255/0x680 mm/page_alloc.c:4567
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2190
 allocate_slab mm/slub.c:2354 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2407
 ___slab_alloc+0xd17/0x13d0 mm/slub.c:3540
 __slab_alloc mm/slub.c:3625 [inline]
 __slab_alloc_node mm/slub.c:3678 [inline]
 slab_alloc_node mm/slub.c:3850 [inline]
 kmem_cache_alloc+0x249/0x340 mm/slub.c:3867
 vm_area_alloc+0x24/0x1d0 kernel/fork.c:465
 mmap_region+0xbd8/0x1f90 mm/mmap.c:2804
 do_mmap+0x76b/0xde0 mm/mmap.c:1379
 vm_mmap_pgoff+0x1e2/0x420 mm/util.c:556
 ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1425
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free pid 8 tgid 8 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x959/0xa80 mm/page_alloc.c:2346
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
 vfree+0x186/0x2e0 mm/vmalloc.c:2842
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:2763
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

Memory state around the buggy address:
 ffff8880207b3980: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880207b3a00: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
>ffff8880207b3a80: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff8880207b3b00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8880207b3b80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb
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