==================================================================
BUG: KASAN: slab-use-after-free in ma_dead_node lib/maple_tree.c:538 [inline]
BUG: KASAN: slab-use-after-free in mas_rewalk_if_dead lib/maple_tree.c:4464 [inline]
BUG: KASAN: slab-use-after-free in mas_next_slot+0x586/0x960 lib/maple_tree.c:4769
Read of size 8 at addr ffff88802cbac200 by task syz-executor.5/5878

CPU: 0 PID: 5878 Comm: syz-executor.5 Not tainted 6.4.0-syzkaller-10096-gdfab92f27c60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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:364 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:475
 kasan_report+0x175/0x1b0 mm/kasan/report.c:588
 ma_dead_node lib/maple_tree.c:538 [inline]
 mas_rewalk_if_dead lib/maple_tree.c:4464 [inline]
 mas_next_slot+0x586/0x960 lib/maple_tree.c:4769
 vma_next include/linux/mm.h:865 [inline]
 validate_mm+0x3e5/0x500 mm/mmap.c:301
 do_vmi_align_munmap+0x13b1/0x15c0 mm/mmap.c:2561
 do_vmi_munmap+0x24d/0x2d0 mm/mmap.c:2619
 __vm_munmap+0x230/0x450 mm/mmap.c:2899
 __do_sys_munmap mm/mmap.c:2916 [inline]
 __se_sys_munmap mm/mmap.c:2913 [inline]
 __x64_sys_munmap+0x69/0x80 mm/mmap.c:2913
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fddf4e8c467
Code: 00 00 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb 85 66 2e 0f 1f 84 00 00 00 00 00 90 b8 0b 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:00007fddf5bd2f38 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fddf4e8c467
RDX: 0000000000008000 RSI: 0000000000008000 RDI: 00007fddeb5ff000
RBP: 00007fddeb5ff000 R08: 0000000000000000 R09: 0000000000000280
R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fddf5bd2fdc R14: 00007fddf5bd2fe0 R15: 0000000020000202
 </TASK>

Allocated by task 5876:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:750
 kmem_cache_alloc_bulk+0x3d2/0x4b0 mm/slub.c:4048
 mt_alloc_bulk lib/maple_tree.c:164 [inline]
 mas_alloc_nodes+0x3df/0x800 lib/maple_tree.c:1304
 mas_node_count_gfp lib/maple_tree.c:1362 [inline]
 mas_preallocate+0x131/0x350 lib/maple_tree.c:5546
 vma_iter_prealloc mm/internal.h:1032 [inline]
 __split_vma+0x1e0/0x7f0 mm/mmap.c:2344
 mprotect_fixup+0x5c5/0xa50 mm/mprotect.c:649
 do_mprotect_pkey+0x8b3/0xd90 mm/mprotect.c:817
 __do_sys_mprotect mm/mprotect.c:838 [inline]
 __se_sys_mprotect mm/mprotect.c:835 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:835
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 5029:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1792 [inline]
 slab_free_freelist_hook mm/slub.c:1818 [inline]
 slab_free mm/slub.c:3801 [inline]
 kmem_cache_free+0x292/0x500 mm/slub.c:3823
 rcu_do_batch kernel/rcu/tree.c:2135 [inline]
 rcu_core+0xaaa/0x1740 kernel/rcu/tree.c:2399
 __do_softirq+0x2ab/0x908 kernel/softirq.c:553

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:491
 __call_rcu_common kernel/rcu/tree.c:2649 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2763
 mas_wr_node_store lib/maple_tree.c:4151 [inline]
 mas_wr_modify+0x1aec/0x2290 lib/maple_tree.c:4346
 mas_store_prealloc+0x313/0x650 lib/maple_tree.c:5529
 vma_complete+0x1ec/0xb40 mm/mmap.c:553
 __split_vma+0x764/0x7f0 mm/mmap.c:2381
 mprotect_fixup+0x52e/0xa50 mm/mprotect.c:643
 do_mprotect_pkey+0x8b3/0xd90 mm/mprotect.c:817
 __do_sys_mprotect mm/mprotect.c:838 [inline]
 __se_sys_mprotect mm/mprotect.c:835 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:835
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:491
 __call_rcu_common kernel/rcu/tree.c:2649 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2763
 mas_wr_node_store lib/maple_tree.c:4151 [inline]
 mas_wr_modify+0x1aec/0x2290 lib/maple_tree.c:4346
 mas_store_prealloc+0x313/0x650 lib/maple_tree.c:5529
 vma_complete+0x1ec/0xb40 mm/mmap.c:553
 __split_vma+0x764/0x7f0 mm/mmap.c:2381
 mprotect_fixup+0x52e/0xa50 mm/mprotect.c:643
 do_mprotect_pkey+0x8b3/0xd90 mm/mprotect.c:817
 __do_sys_mprotect mm/mprotect.c:838 [inline]
 __se_sys_mprotect mm/mprotect.c:835 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:835
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88802cbac200
 which belongs to the cache maple_node of size 256
The buggy address is located 0 bytes inside of
 freed 256-byte region [ffff88802cbac200, ffff88802cbac300)

The buggy address belongs to the physical page:
page:ffffea0000b2eb00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802cbac800 pfn:0x2cbac
head:ffffea0000b2eb00 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff88801324d000 ffffea0000af3f90 ffffea00005de190
raw: ffff88802cbac800 000000000010000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4474, tgid 4474 (v4l_id), ts 28665805640, free_ts 28659647043
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1570
 prep_new_page mm/page_alloc.c:1577 [inline]
 get_page_from_freelist+0x31e8/0x3370 mm/page_alloc.c:3221
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4477
 alloc_slab_page+0x6a/0x160 mm/slub.c:1862
 allocate_slab mm/slub.c:2009 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2062
 ___slab_alloc+0xade/0x1100 mm/slub.c:3215
 __kmem_cache_alloc_bulk mm/slub.c:3966 [inline]
 kmem_cache_alloc_bulk+0x196/0x4b0 mm/slub.c:4041
 mt_alloc_bulk lib/maple_tree.c:164 [inline]
 mas_alloc_nodes+0x3df/0x800 lib/maple_tree.c:1304
 mas_node_count_gfp lib/maple_tree.c:1362 [inline]
 mas_preallocate+0x131/0x350 lib/maple_tree.c:5546
 vma_iter_prealloc mm/internal.h:1032 [inline]
 mmap_region+0x13b1/0x2310 mm/mmap.c:2805
 do_mmap+0x8cf/0xf80 mm/mmap.c:1362
 vm_mmap_pgoff+0x1db/0x410 mm/util.c:543
 ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1408
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1161 [inline]
 free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2348
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2443
 discard_slab mm/slub.c:2108 [inline]
 __unfreeze_partials+0x1dc/0x220 mm/slub.c:2647
 put_cpu_partial+0x116/0x180 mm/slub.c:2723
 __slab_free+0x2b6/0x390 mm/slub.c:3671
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:750
 slab_alloc_node mm/slub.c:3470 [inline]
 slab_alloc mm/slub.c:3478 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3485 [inline]
 kmem_cache_alloc+0x123/0x300 mm/slub.c:3494
 getname_flags+0xbc/0x4e0 fs/namei.c:140
 vfs_fstatat fs/stat.c:275 [inline]
 __do_sys_newfstatat fs/stat.c:446 [inline]
 __se_sys_newfstatat fs/stat.c:440 [inline]
 __x64_sys_newfstatat+0x12e/0x1d0 fs/stat.c:440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88802cbac100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802cbac180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802cbac200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88802cbac280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802cbac300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================