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BUG: KASAN: slab-out-of-bounds in mt_slot lib/maple_tree.c:816 [inline]
BUG: KASAN: slab-out-of-bounds in mas_slot lib/maple_tree.c:849 [inline]
BUG: KASAN: slab-out-of-bounds in mt_validate_nulls+0xc04/0xd10 lib/maple_tree.c:7172
Read of size 8 at addr ffff8880241c1500 by task syz-executor.3/7812

CPU: 0 PID: 7812 Comm: syz-executor.3 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
 mt_slot lib/maple_tree.c:816 [inline]
 mas_slot lib/maple_tree.c:849 [inline]
 mt_validate_nulls+0xc04/0xd10 lib/maple_tree.c:7172
 mt_validate+0x17e3/0x4370 lib/maple_tree.c:7227
 validate_mm+0x9d/0x470 mm/mmap.c:300
 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: 0033:0x7f6575c8c467
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:00007f6576a5ef38 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6575c8c467
RDX: 0000000000010000 RSI: 0000000000010000 RDI: 00007f656c3ff000
RBP: 00007f656c3ff000 R08: 0000000000000000 R09: 0000000000000312
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6576a5efdc R14: 00007f6576a5efe0 R15: 00000000200004c2
 </TASK>

Allocated by task 7812:
 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

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_replace+0x98c/0xfa0 lib/maple_tree.c:1785
 mas_wr_node_store+0xcab/0x1170 lib/maple_tree.c:4151
 mas_wr_modify+0x28b/0x10d0 lib/maple_tree.c:4346
 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 ffff8880241c1400
 which belongs to the cache maple_node of size 256
The buggy address is located 0 bytes to the right of
 allocated 256-byte region [ffff8880241c1400, ffff8880241c1500)

The buggy address belongs to the physical page:
page:ffffea0000907000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x241c0
head:ffffea0000907000 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 ffffea0001d89c80 dead000000000002
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 0x52800(GFP_NOWAIT|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5071, tgid 5071 (modprobe), ts 266655891492, free_ts 119461017953
 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+0x106/0x140 lib/maple_tree.c:1362
 mas_node_count lib/maple_tree.c:1376 [inline]
 mas_split.isra.0+0x321/0x1810 lib/maple_tree.c:3537
 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_gfp+0xce/0x1f0 lib/maple_tree.c:5506
 vma_iter_store_gfp mm/internal.h:1085 [inline]
 do_brk_flags+0x5a5/0x1120 mm/mmap.c:3097
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_fclone include/linux/skbuff.h:1339 [inline]
 tcp_stream_alloc_skb+0x36/0x570 net/ipv4/tcp.c:867
 tcp_sendmsg_locked+0xcce/0x3180 net/ipv4/tcp.c:1147
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1333
 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:748
 sock_write_iter+0x29b/0x3d0 net/socket.c:1129
 call_write_iter include/linux/fs.h:1871 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x981/0xda0 fs/read_write.c:584
 ksys_write+0x1e3/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80

Memory state around the buggy address:
 ffff8880241c1400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880241c1480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880241c1500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff8880241c1580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880241c1600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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