==================================================================
BUG: KASAN: slab-use-after-free in flush_tlb_func+0x24d/0x560
Write of size 8 at addr ffff888037da8980 by task swapper/0/0

CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-rc4-next-20250630 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xca/0x120
 print_report+0xcb/0x670
 kasan_report+0xca/0x100
 kasan_check_range+0x39/0x1b0
 flush_tlb_func+0x24d/0x560
 __flush_smp_call_function_queue+0x20d/0x740
 flush_smp_call_function_queue+0x9c/0xf0
 do_idle+0x274/0x490
 cpu_startup_entry+0x4f/0x60
 rest_init+0x164/0x290
 start_kernel+0x3f9/0x510
 x86_64_start_reservations+0x18/0x30
 x86_64_start_kernel+0x109/0x120
 common_startup_64+0x13e/0x148
 </TASK>

Allocated by task 25518:
 kasan_save_stack+0x24/0x50
 kasan_save_track+0x14/0x30
 __kasan_slab_alloc+0x59/0x70
 kmem_cache_alloc_noprof+0x13c/0x470
 copy_process+0x6f3a/0x73e0
 kernel_clone+0xea/0x820
 __do_sys_clone+0xce/0x120
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 26029:
 kasan_save_stack+0x24/0x50
 kasan_save_track+0x14/0x30
 kasan_save_free_info+0x3a/0x60
 __kasan_slab_free+0x38/0x50
 kmem_cache_free+0x2a1/0x460
 mmput+0x305/0x390
 do_exit+0x79d/0x2970
 do_group_exit+0xd3/0x2a0
 __x64_sys_exit_group+0x3e/0x50
 x64_sys_call+0xf76/0x18a0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888037da8000
 which belongs to the cache mm_struct of size 2456
The buggy address is located 2432 bytes inside of
 freed 2456-byte region [ffff888037da8000, ffff888037da8998)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37da8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880379b9381
anon flags: 0x100000000000040(head|node=0|zone=1)
page_type: f5(slab)
raw: 0100000000000040 ffff888008c4bc80 0000000000000000 dead000000000001
raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff8880379b9381
head: 0100000000000040 ffff888008c4bc80 0000000000000000 dead000000000001
head: 0000000000000000 00000000000c000c 00000000f5000000 ffff8880379b9381
loop5: detected capacity change from 0 to 8192
head: 0100000000000003 ffffea0000df6a01 00000000ffffffff 00000000ffffffff
head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888037da8880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888037da8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888037da8980: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff888037da8a00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff888037da8a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
loop5: detected capacity change from 0 to 8192
loop5: detected capacity change from 0 to 8192
loop2: detected capacity change from 0 to 8192
Bluetooth: hci7: command 0x0406 tx timeout