==================================================================
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+0x1ab4/0x1f00 lib/maple_tree.c:4769
Read of size 8 at addr ffff8880268db000 by task syz-executor.0/1782

CPU: 0 PID: 1782 Comm: syz-executor.0 Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #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+0xd9/0x150 lib/dump_stack.c:106
 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:364
 print_report mm/kasan/report.c:475 [inline]
 kasan_report+0x11d/0x130 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+0x1ab4/0x1f00 lib/maple_tree.c:4769
 mas_next lib/maple_tree.c:5719 [inline]
 mas_find+0xc7/0x340 lib/maple_tree.c:5711
 vma_next include/linux/mm.h:865 [inline]
 validate_mm+0xd2/0x470 mm/mmap.c:301
 do_vmi_align_munmap+0x1199/0x1680 mm/mmap.c:2561
 do_vmi_munmap+0x266/0x430 mm/mmap.c:2619
 __vm_munmap+0x137/0x380 mm/mmap.c:2899
 __do_sys_munmap mm/mmap.c:2916 [inline]
 __se_sys_munmap mm/mmap.c:2913 [inline]
 __x64_sys_munmap+0x62/0x80 mm/mmap.c:2913
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb68668c467
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:00007fb687314f38 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb68668c467
RDX: 0000000000020000 RSI: 0000000000020000 RDI: 00007fb67cdde000
RBP: 00007fb67cdde000 R08: 0000000000000000 R09: 0000000000001529
R10: 0000000000020000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb687314fdc R14: 00007fb687314fe0 R15: 0000000020001542
 </TASK>

Allocated by task 1782:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:750 [inline]
 kmem_cache_alloc_bulk+0x424/0x860 mm/slub.c:4048
 mt_alloc_bulk lib/maple_tree.c:164 [inline]
 mas_alloc_nodes+0x341/0x8b0 lib/maple_tree.c:1304
 mas_node_count_gfp lib/maple_tree.c:1362 [inline]
 mas_preallocate+0x1bb/0x360 lib/maple_tree.c:5546
 vma_iter_prealloc mm/internal.h:1032 [inline]
 __split_vma+0x1b7/0x830 mm/mmap.c:2344
 do_vmi_align_munmap+0x413/0x1680 mm/mmap.c:2477
 do_vmi_munmap+0x266/0x430 mm/mmap.c:2619
 __vm_munmap+0x137/0x380 mm/mmap.c:2899
 __do_sys_munmap mm/mmap.c:2916 [inline]
 __se_sys_munmap mm/mmap.c:2913 [inline]
 __x64_sys_munmap+0x62/0x80 mm/mmap.c:2913
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 22:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1792 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1818
 slab_free mm/slub.c:3801 [inline]
 kmem_cache_free+0xf0/0x490 mm/slub.c:3823
 rcu_do_batch kernel/rcu/tree.c:2135 [inline]
 rcu_core+0x802/0x1c10 kernel/rcu/tree.c:2399
 __do_softirq+0x1d4/0x905 kernel/softirq.c:553

Last potentially related work creation:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb9/0xd0 mm/kasan/generic.c:491
 __call_rcu_common.constprop.0+0x99/0x7e0 kernel/rcu/tree.c:2649
 ma_free_rcu lib/maple_tree.c:189 [inline]
 mas_free lib/maple_tree.c:1344 [inline]
 mas_mat_free+0xa0/0x560 lib/maple_tree.c:1021
 mas_wmb_replace lib/maple_tree.c:2801 [inline]
 mas_split.isra.0+0x1203/0x1810 lib/maple_tree.c:3587
 mas_commit_b_node.isra.0+0x684/0xcf0 lib/maple_tree.c:3638
 mas_wr_bnode+0x155/0x1e0 lib/maple_tree.c:4315
 mas_wr_modify+0x2ee/0x10d0 lib/maple_tree.c:4353
 mas_wr_store_entry.isra.0+0x495/0x1030 lib/maple_tree.c:4390
 mas_store_prealloc+0xb3/0x270 lib/maple_tree.c:5529
 vma_complete+0x8fd/0xdc0 mm/mmap.c:553
 __split_vma+0x53b/0x830 mm/mmap.c:2381
 split_vma+0xc6/0x110 mm/mmap.c:2409
 mprotect_fixup+0x891/0xbd0 mm/mprotect.c:643
 do_mprotect_pkey+0x883/0xd40 mm/mprotect.c:817
 __do_sys_mprotect mm/mprotect.c:838 [inline]
 __se_sys_mprotect mm/mprotect.c:835 [inline]
 __x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:835
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb9/0xd0 mm/kasan/generic.c:491
 __call_rcu_common.constprop.0+0x99/0x7e0 kernel/rcu/tree.c:2649
 ma_free_rcu lib/maple_tree.c:189 [inline]
 mas_free lib/maple_tree.c:1344 [inline]
 mas_mat_free+0xa0/0x560 lib/maple_tree.c:1021
 mas_wmb_replace lib/maple_tree.c:2801 [inline]
 mas_split.isra.0+0x1203/0x1810 lib/maple_tree.c:3587
 mas_commit_b_node.isra.0+0x684/0xcf0 lib/maple_tree.c:3638
 mas_wr_bnode+0x155/0x1e0 lib/maple_tree.c:4315
 mas_wr_modify+0x2ee/0x10d0 lib/maple_tree.c:4353
 mas_wr_store_entry.isra.0+0x495/0x1030 lib/maple_tree.c:4390
 mas_store_prealloc+0xb3/0x270 lib/maple_tree.c:5529
 vma_complete+0x8fd/0xdc0 mm/mmap.c:553
 __split_vma+0x53b/0x830 mm/mmap.c:2381
 split_vma+0xc6/0x110 mm/mmap.c:2409
 mprotect_fixup+0x891/0xbd0 mm/mprotect.c:643
 do_mprotect_pkey+0x883/0xd40 mm/mprotect.c:817
 __do_sys_mprotect mm/mprotect.c:838 [inline]
 __se_sys_mprotect mm/mprotect.c:835 [inline]
 __x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:835
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff8880268db000
 which belongs to the cache maple_node of size 256
The buggy address is located 0 bytes inside of
 freed 256-byte region [ffff8880268db000, ffff8880268db100)

The buggy address belongs to the physical page:
page:ffffea00009a3680 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x268da
head:ffffea00009a3680 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff88801324d000 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 26514, tgid 26514 (modprobe), ts 856870065267, free_ts 856450551449
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1570
 prep_new_page mm/page_alloc.c:1577 [inline]
 get_page_from_freelist+0xfed/0x2d30 mm/page_alloc.c:3221
 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4477
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279
 alloc_slab_page mm/slub.c:1862 [inline]
 allocate_slab+0x25f/0x390 mm/slub.c:2009
 new_slab mm/slub.c:2062 [inline]
 ___slab_alloc+0xbc3/0x15d0 mm/slub.c:3215
 __kmem_cache_alloc_bulk mm/slub.c:3966 [inline]
 kmem_cache_alloc_bulk+0x270/0x860 mm/slub.c:4041
 mt_alloc_bulk lib/maple_tree.c:164 [inline]
 mas_alloc_nodes+0x341/0x8b0 lib/maple_tree.c:1304
 mas_node_count_gfp lib/maple_tree.c:1362 [inline]
 mas_preallocate+0x1bb/0x360 lib/maple_tree.c:5546
 vma_iter_prealloc mm/internal.h:1032 [inline]
 mmap_region+0x891/0x2570 mm/mmap.c:2805
 do_mmap+0x850/0xee0 mm/mmap.c:1362
 vm_mmap_pgoff+0x1a2/0x3b0 mm/util.c:543
 ksys_mmap_pgoff+0x7d/0x5b0 mm/mmap.c:1408
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 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+0x62e/0xcb0 mm/page_alloc.c:2348
 free_unref_page+0x33/0x370 mm/page_alloc.c:2443
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:750 [inline]
 slab_alloc_node mm/slub.c:3470 [inline]
 kmem_cache_alloc_node+0x1c6/0x3e0 mm/slub.c:3515
 __alloc_skb+0x288/0x330 net/core/skbuff.c:634
 alloc_skb include/linux/skbuff.h:1289 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1211 [inline]
 netlink_sendmsg+0x9b0/0xe30 net/netlink/af_netlink.c:1889
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:748
 ____sys_sendmsg+0x739/0x920 net/socket.c:2494
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548
 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff8880268daf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880268daf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880268db000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8880268db080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880268db100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================