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BUG: KASAN: stack-out-of-bounds in idempotent kernel/module/main.c:3078 [inline]
BUG: KASAN: stack-out-of-bounds in init_module_from_file+0x62c/0x6a0 kernel/module/main.c:3124
Read of size 8 at addr ffffc9001585fe20 by task syz-executor.1/5983

CPU: 0 PID: 5983 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-10098-g995b406c7e97 #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
 idempotent kernel/module/main.c:3078 [inline]
 init_module_from_file+0x62c/0x6a0 kernel/module/main.c:3124
 __do_sys_finit_module kernel/module/main.c:3171 [inline]
 __se_sys_finit_module kernel/module/main.c:3154 [inline]
 __x64_sys_finit_module+0xfd/0x190 kernel/module/main.c:3154
 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: 0033:0x7f5f5bc8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5f5ca9c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00007f5f5bdabf80 RCX: 00007f5f5bc8c389
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f5f5bcd7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb617adaf R14: 00007f5f5ca9c300 R15: 0000000000022000
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90015858000, ffffc90015861000) created by:
 kernel_clone+0xeb/0x890 kernel/fork.c:2911

The buggy address belongs to the physical page:
page:ffffea0000894f40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2253d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 5970, tgid 5970 (syz-executor.1), ts 332707358651, free_ts 332526623240
 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
 vm_area_alloc_pages mm/vmalloc.c:3059 [inline]
 __vmalloc_area_node mm/vmalloc.c:3135 [inline]
 __vmalloc_node_range+0xb1c/0x14c0 mm/vmalloc.c:3316
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1112 [inline]
 copy_process+0x13bb/0x75c0 kernel/fork.c:2329
 kernel_clone+0xeb/0x890 kernel/fork.c:2911
 __do_sys_clone+0xba/0x100 kernel/fork.c:3054
 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
 tlb_batch_list_free mm/mmu_gather.c:113 [inline]
 tlb_finish_mmu+0x1a7/0x7e0 mm/mmu_gather.c:394
 exit_mmap+0x2cd/0x960 mm/mmap.c:3211
 __mmput+0x128/0x4c0 kernel/fork.c:1347
 mmput+0x60/0x70 kernel/fork.c:1369
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9a7/0x29a0 kernel/exit.c:861
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
 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:
 ffffc9001585fd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9001585fd80: f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00 00 00 00 00
>ffffc9001585fe00: 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00 00
                               ^
 ffffc9001585fe80: 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00
 ffffc9001585ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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