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BUG: KASAN: stack-out-of-bounds in folio_batch_add include/linux/pagevec.h:130 [inline]
BUG: KASAN: stack-out-of-bounds in check_move_unevictable_pages+0x3f6/0x440 mm/vmscan.c:4857
BUG: KASAN: stack-out-of-bounds in folio_batch_add include/linux/pagevec.h:130 [inline]
BUG: KASAN: stack-out-of-bounds in check_move_unevictable_pages+0x3f6/0x440 mm/vmscan.c:4857
Write of size 8 at addr ffffc9000625fa18 by task syz-executor.5/16551

CPU: 0 PID: 16551 Comm: syz-executor.5 Not tainted 5.19.0-rc1-next-20220607-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description.constprop.0.cold+0xf/0x495 mm/kasan/report.c:313
 print_report mm/kasan/report.c:429 [inline]
 kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491
 folio_batch_add include/linux/pagevec.h:130 [inline]
 check_move_unevictable_pages+0x3f6/0x440 mm/vmscan.c:4857
 drm_gem_check_release_pagevec drivers/gpu/drm/drm_gem.c:511 [inline]
 drm_gem_put_pages+0x29f/0x3f0 drivers/gpu/drm/drm_gem.c:639
 drm_gem_shmem_put_pages_locked+0x13e/0x230 drivers/gpu/drm/drm_gem_shmem_helper.c:237
 drm_gem_shmem_put_pages drivers/gpu/drm/drm_gem_shmem_helper.c:252 [inline]
 drm_gem_shmem_vm_close+0x45/0x70 drivers/gpu/drm/drm_gem_shmem_helper.c:588
 remove_vma+0x81/0x130 mm/mmap.c:187
 exit_mmap+0x2a1/0x750 mm/mmap.c:3215
 __mmput+0x128/0x4c0 kernel/fork.c:1180
 mmput+0x5c/0x70 kernel/fork.c:1201
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0xa18/0x2a00 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x2542/0x2600 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fe078489109
Code: Unable to access opcode bytes at RIP 0x7fe0784890df.
RSP: 002b:00007fe0795e5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: 0000000020ffc000 RBX: 00007fe07859bf60 RCX: 00007fe078489109
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020ffc000
RBP: 00007fe0784e308d R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8b9a004f R14: 00007fe0795e5300 R15: 0000000000022000
 </TASK>

The buggy address belongs to stack of task syz-executor.5/16551
 and is located at offset 96 in frame:
 exit_mmap+0x0/0x750 mm/mmap.c:2860

This frame has 2 objects:
 [32, 96) 'mas'
 [128, 256) 'tlb'

The buggy address belongs to the virtual mapping at
 [ffffc90006258000, ffffc90006261000) created by:
 kernel_clone+0xe7/0xab0 kernel/fork.c:2648

The buggy address belongs to the physical page:
page:ffffea0001e214c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78853
memcg:ffff8880241bec02
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff8880241bec02
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 16549, tgid 16549 (syz-executor.5), ts 927574945504, free_ts 927179189607
 prep_new_page mm/page_alloc.c:2460 [inline]
 get_page_from_freelist+0xa64/0x3d10 mm/page_alloc.c:4279
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5503
 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2279
 vm_area_alloc_pages mm/vmalloc.c:2926 [inline]
 __vmalloc_area_node mm/vmalloc.c:2994 [inline]
 __vmalloc_node_range+0x735/0x13b0 mm/vmalloc.c:3164
 alloc_thread_stack_node kernel/fork.c:311 [inline]
 dup_task_struct kernel/fork.c:971 [inline]
 copy_process+0x1568/0x7010 kernel/fork.c:2064
 kernel_clone+0xe7/0xab0 kernel/fork.c:2648
 __do_sys_clone+0xba/0x100 kernel/fork.c:2782
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1375 [inline]
 free_pcp_prepare+0x549/0xd20 mm/page_alloc.c:1425
 free_unref_page_prepare mm/page_alloc.c:3311 [inline]
 free_unref_page_list+0x184/0x1530 mm/page_alloc.c:3475
 release_pages+0xff1/0x2290 mm/swap.c:980
 tlb_batch_pages_flush+0xa8/0x1a0 mm/mmu_gather.c:58
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu mm/mmu_gather.c:262 [inline]
 tlb_finish_mmu+0x147/0x7e0 mm/mmu_gather.c:353
 exit_mmap+0x217/0x750 mm/mmap.c:3205
 __mmput+0x128/0x4c0 kernel/fork.c:1180
 mmput+0x5c/0x70 kernel/fork.c:1201
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0xa18/0x2a00 kernel/exit.c:782
 __do_sys_exit kernel/exit.c:892 [inline]
 __se_sys_exit kernel/exit.c:890 [inline]
 __x64_sys_exit+0x3e/0x50 kernel/exit.c:890
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Memory state around the buggy address:
 ffffc9000625f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000625f980: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00
>ffffc9000625fa00: 00 00 00 f2 f2 f2 f2 00 00 00 00 00 00 00 00 00
                            ^
 ffffc9000625fa80: 00 00 00 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00
 ffffc9000625fb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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