------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:157! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 1783 Comm: syz.0.12495 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 Hardware name: linux,dummy-virt (DT) pstate: 10000005 (nzcV daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __page_table_check_zero+0x1a8/0x1f0 mm/page_table_check.c:157 lr : instrument_atomic_read include/linux/instrumented.h:68 [inline] lr : atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] lr : __page_table_check_zero+0x11c/0x1f0 mm/page_table_check.c:157 sp : ffff80008e0d77b0 x29: ffff80008e0d77b0 x28: dfff800000000000 x27: ffff00000a117ca4 x26: ffff7000112cd628 x25: 0000000000000004 x24: ffff80008966b140 x23: dfff800000000000 x22: 0000000000000002 x21: 0000000000000000 x20: ffff00000a117ca0 x19: ffff00000a117ca0 x18: 00000000019e58c6 x17: 0000000000000000 x16: 0000000000000000 x15: ffff000013272880 x14: 1fffe0000264e50f x13: 1fffe0000264e519 x12: ffff600001422f95 x11: 1fffe00001422f94 x10: ffff600001422f94 x9 : dfff800000000000 x8 : ffff00000a117ca7 x7 : 0000000000000001 x6 : ffff600001422f94 x5 : ffff00000a117ca4 x4 : ffff600001422f95 x3 : ffff80008098d870 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: __page_table_check_zero+0x1a8/0x1f0 mm/page_table_check.c:156 page_table_check_free include/linux/page_table_check.h:41 [inline] free_pages_prepare mm/page_alloc.c:1094 [inline] free_unref_page+0x724/0xd24 mm/page_alloc.c:2588 __free_pages+0x12c/0x1d8 mm/page_alloc.c:4770 free_pages.part.0+0xc0/0x100 mm/page_alloc.c:4783 free_pages+0x14/0x24 mm/page_alloc.c:4780 hcd_buffer_free_pages+0xac/0x160 drivers/usb/core/buffer.c:210 dec_usb_memory_use_count+0x20c/0x358 drivers/usb/core/devio.c:198 usbdev_vm_close+0x38/0x50 drivers/usb/core/devio.c:222 mmap_region+0x5a4/0x18e4 mm/mmap.c:3005 do_mmap+0x69c/0xa34 mm/mmap.c:1397 vm_mmap_pgoff+0x170/0x2a8 mm/util.c:588 ksys_mmap_pgoff+0x1fc/0x634 mm/mmap.c:1443 __do_compat_sys_aarch32_mmap2 arch/arm64/kernel/sys32.c:59 [inline] __se_compat_sys_aarch32_mmap2 arch/arm64/kernel/sys32.c:50 [inline] __arm64_compat_sys_aarch32_mmap2+0xc0/0x130 arch/arm64/kernel/sys32.c:50 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xa4/0x234 arch/arm64/kernel/syscall.c:132 do_el0_svc_compat+0x44/0x68 arch/arm64/kernel/syscall.c:157 el0_svc_compat+0x4c/0x17c arch/arm64/kernel/entry-common.c:852 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:862 el0t_32_sync+0x194/0x198 arch/arm64/kernel/entry.S:603 Code: a8c67bfd d50323bf d65f03c0 d4210000 (d4210000) ---[ end trace 0000000000000000 ]---