------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:148! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 17756 Comm: syz-executor.4 Not tainted 6.4.0-rc5-syzkaller-g177239177378 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __page_table_check_zero+0x280/0x2bc mm/page_table_check.c:148 lr : __page_table_check_zero+0x280/0x2bc mm/page_table_check.c:148 sp : ffff8000a5d07600 x29: ffff8000a5d07600 x28: ffff8000922fc000 x27: 0000000000000000 x26: dfff800000000000 x25: 0000000000000000 x24: ffff0000c0679554 x23: 1ffff0001245f900 x22: dfff800000000000 x21: 0000000000000001 x20: ffff0000c0679550 x19: 0000000000000001 x18: 1fffe000368447c6 x17: 0000000000000000 x16: ffff800080310814 x15: 0000000000000001 x14: 1ffff00011bd80ac x13: dfff800000000000 x12: 0000000000000001 x11: 0000000000040000 x10: 0000000000014fff x9 : ffff8000a018b000 x8 : 0000000000015000 x7 : ffff800080a36560 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800080a369c0 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __page_table_check_zero+0x280/0x2bc mm/page_table_check.c:148 page_table_check_free include/linux/page_table_check.h:46 [inline] free_pages_prepare mm/page_alloc.c:1303 [inline] free_unref_page_prepare+0x960/0xadc mm/page_alloc.c:2564 free_unref_page+0x80/0x3dc mm/page_alloc.c:2659 free_the_page mm/page_alloc.c:661 [inline] __free_pages+0x1a0/0x1cc mm/page_alloc.c:4857 free_pages+0xa0/0xb8 mm/page_alloc.c:4868 hcd_buffer_free_pages+0xf0/0x15c drivers/usb/core/buffer.c:210 dec_usb_memory_use_count+0x250/0x330 drivers/usb/core/devio.c:198 usbdev_vm_close+0x44/0x54 drivers/usb/core/devio.c:222 mmap_region+0x1130/0x1aa4 mm/mmap.c:2773 do_mmap+0xa00/0x1108 mm/mmap.c:1394 vm_mmap_pgoff+0x198/0x3b8 mm/util.c:543 ksys_mmap_pgoff+0x3c8/0x5b0 mm/mmap.c:1440 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: d4210000 97eb55b7 d4210000 97eb55b5 (d4210000) ---[ end trace 0000000000000000 ]---