loop0: detected capacity change from 0 to 64
==================================================================
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 kernel/module/main.c:3124 [inline]
BUG: KASAN: stack-out-of-bounds in __do_sys_finit_module kernel/module/main.c:3171 [inline]
BUG: KASAN: stack-out-of-bounds in __se_sys_finit_module+0x371/0x8d0 kernel/module/main.c:3154
Read of size 8 at addr ffffc90005b9fd60 by task syz-executor.0/21031

CPU: 1 PID: 21031 Comm: syz-executor.0 Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #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
 idempotent kernel/module/main.c:3078 [inline]
 init_module_from_file kernel/module/main.c:3124 [inline]
 __do_sys_finit_module kernel/module/main.c:3171 [inline]
 __se_sys_finit_module+0x371/0x8d0 kernel/module/main.c:3154
 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: 0033:0x7f8658e8c389
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:00007f8659c75168 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00007f8658fabf80 RCX: 00007f8658e8c389
RDX: 0000000000000005 RSI: 0000000020000300 RDI: 0000000000000004
RBP: 00007f8658ed7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe15c9b31f R14: 00007f8659c75300 R15: 0000000000022000
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90005b98000, ffffc90005ba1000) created by:
 copy_process+0x5c8/0x4290 kernel/fork.c:2329

The buggy address belongs to the physical page:
page:ffffea0000ae5400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2b950
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 5033, tgid 5033 (syz-executor.4), ts 1608889195368, free_ts 1608666675897
 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
 vm_area_alloc_pages mm/vmalloc.c:3059 [inline]
 __vmalloc_area_node mm/vmalloc.c:3135 [inline]
 __vmalloc_node_range+0x9a3/0x1490 mm/vmalloc.c:3316
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct+0x3e5/0x7d0 kernel/fork.c:1112
 copy_process+0x5c8/0x4290 kernel/fork.c:2329
 kernel_clone+0x222/0x800 kernel/fork.c:2911
 __do_sys_clone kernel/fork.c:3054 [inline]
 __se_sys_clone kernel/fork.c:3038 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:3038
 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_list+0x596/0x830 mm/page_alloc.c:2489
 release_pages+0x2193/0x2470 mm/swap.c:1042
 __folio_batch_release+0x84/0x100 mm/swap.c:1062
 folio_batch_release include/linux/pagevec.h:83 [inline]
 truncate_inode_pages_range+0x45d/0x11b0 mm/truncate.c:372
 evict_inode_truncate_pages fs/btrfs/inode.c:5221 [inline]
 btrfs_evict_inode+0x208/0x1000 fs/btrfs/inode.c:5344
 evict+0x2a4/0x620 fs/inode.c:665
 close_ctree+0x751/0xd00 fs/btrfs/disk-io.c:4403
 generic_shutdown_super+0x134/0x340 fs/super.c:499
 kill_anon_super+0x3b/0x60 fs/super.c:1110
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2138
 deactivate_locked_super+0xa4/0x110 fs/super.c:330
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204

Memory state around the buggy address:
 ffffc90005b9fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90005b9fc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90005b9fd00: f1 f1 f1 f1 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3
                                                       ^
 ffffc90005b9fd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90005b9fe00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================