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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 ffff888019e99020 by task syz-executor.2/2714

CPU: 1 PID: 2714 Comm: syz-executor.2 Not tainted 6.8.0-rc2-syzkaller #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_read_fault mm/memory.c:4738 [inline]
 do_fault mm/memory.c:4868 [inline]
 do_pte_missing mm/memory.c:3745 [inline]
 handle_pte_fault mm/memory.c:5144 [inline]
 __handle_mm_fault+0x49d7/0x72b0 mm/memory.c:5285
 handle_mm_fault+0x27e/0x770 mm/memory.c:5450
 faultin_page mm/gup.c:958 [inline]
 __get_user_pages+0x6bd/0x15f0 mm/gup.c:1241
 populate_vma_page_range+0x2aa/0x370 mm/gup.c:1679
 __mm_populate+0x279/0x450 mm/gup.c:1788
 mm_populate include/linux/mm.h:3391 [inline]
 vm_mmap_pgoff+0x304/0x420 mm/util.c:561
 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
RIP: 0033:0x7f5f13c7cda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5f149470c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f5f13dac050 RCX: 00007f5f13c7cda9
RDX: 00000000027fffff RSI: 0000000000600000 RDI: 0000000020000000
RBP: 00007f5f13cc947a R08: 0000000000000005 R09: 0000000000000000
R10: 0000000004002011 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5f13dac050 R15: 00007ffc8e251ea8
 </TASK>

Allocated by task 2714:
 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 2701:
 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:640
 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:2190 [inline]
 rcu_core+0xad8/0x17c0 kernel/rcu/tree.c:2465
 __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:586
 __call_rcu_common kernel/rcu/tree.c:2715 [inline]
 call_rcu+0x167/0xa80 kernel/rcu/tree.c:2829
 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 ffff888019e99000
 which belongs to the cache vm_area_struct of size 192
The buggy address is located 32 bytes inside of
 freed 192-byte region [ffff888019e99000, ffff888019e990c0)

The buggy address belongs to the physical page:
page:ffffea000067a640 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19e99
memcg:ffff88801d284501
anon flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff8880146a1b40 ffffea000060c280 dead000000000005
raw: 0000000000000000 00000000000f000f 00000001ffffffff ffff88801d284501
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 4803, tgid 4803 (dhcpcd-run-hook), ts 49768097874, free_ts 42540632355
 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_dup+0x27/0x280 kernel/fork.c:480
 dup_mmap kernel/fork.c:695 [inline]
 dup_mm kernel/fork.c:1685 [inline]
 copy_mm+0xd90/0x21b0 kernel/fork.c:1734
 copy_process+0x1d6f/0x3fb0 kernel/fork.c:2497
 kernel_clone+0x222/0x840 kernel/fork.c:2902
 __do_sys_clone kernel/fork.c:3045 [inline]
 __se_sys_clone kernel/fork.c:3029 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:3029
 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 4509 tgid 4509 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
 __slab_free+0x345/0x410 mm/slub.c:4211
 qlink_free mm/kasan/quarantine.c:160 [inline]
 qlist_free_all+0x6d/0xd0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:324
 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]
 __do_kmalloc_node mm/slub.c:3980 [inline]
 __kmalloc+0x1dd/0x490 mm/slub.c:3994
 kmalloc include/linux/slab.h:594 [inline]
 tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x2b7/0x730 security/tomoyo/file.c:822
 security_inode_getattr+0xd3/0x120 security/security.c:2237
 vfs_getattr+0x46/0x430 fs/stat.c:173
 vfs_fstat fs/stat.c:198 [inline]
 vfs_fstatat+0xd6/0x190 fs/stat.c:300
 __do_sys_newfstatat fs/stat.c:468 [inline]
 __se_sys_newfstatat fs/stat.c:462 [inline]
 __x64_sys_newfstatat+0x117/0x190 fs/stat.c:462
 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

Memory state around the buggy address:
 ffff888019e98f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888019e98f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888019e99000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff888019e99080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888019e99100: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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