------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:146! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 7889 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __page_table_check_zero+0x280/0x2bc mm/page_table_check.c:146 lr : __page_table_check_zero+0x280/0x2bc mm/page_table_check.c:146 sp : ffff80009cbd7600 x29: ffff80009cbd7600 x28: ffff800093492000 x27: 0000000000000000 x26: dfff800000000000 x25: 0000000000000000 x24: ffff0000c06e6204 x23: 1ffff00012692540 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000c06e6200 x19: 0000000000000000 x18: ffff80009cbd7420 x17: 00000000000303b8 x16: ffff80008031f6c4 x15: 0000000000000001 x14: 1fffe000180dcc40 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 00000000000049e6 x9 : ffff8000981b9000 x8 : 00000000000049e7 x7 : ffff800080a9ddbc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800080a9e228 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __page_table_check_zero+0x280/0x2bc mm/page_table_check.c:146 page_table_check_free include/linux/page_table_check.h:41 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] free_unref_page_prepare+0x950/0xa70 mm/page_alloc.c:2346 free_unref_page+0x84/0x428 mm/page_alloc.c:2486 free_the_page mm/page_alloc.c:563 [inline] __free_pages+0x1a0/0x1cc mm/page_alloc.c:4653 free_pages+0xa4/0xbc mm/page_alloc.c:4664 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+0x1018/0x1a28 mm/mmap.c:2952 do_mmap+0x9f4/0xff4 mm/mmap.c:1382 vm_mmap_pgoff+0x1a0/0x3d4 mm/util.c:556 ksys_mmap_pgoff+0x3c8/0x5b0 mm/mmap.c:1428 __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:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: d4210000 97ea2cc8 d4210000 97ea2cc6 (d4210000) ---[ end trace 0000000000000000 ]---