------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:146! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 20557 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:__page_table_check_zero+0x2d8/0x4a0 mm/page_table_check.c:146 Code: ff cb e9 b5 fd ff ff e8 e6 4d 8f ff 48 ff cb e9 27 fe ff ff e8 d9 4d 8f ff 90 0f 0b e8 d1 4d 8f ff 90 0f 0b e8 c9 4d 8f ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 91 52 8f RSP: 0018:ffffc9000fbf7968 EFLAGS: 00010287 RAX: ffffffff8206bab7 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc9001e271000 RSI: 0000000000003d34 RDI: 0000000000003d35 RBP: ffff888015cc160c R08: ffff888015cc160f R09: 1ffff11002b982c1 R10: dffffc0000000000 R11: ffffed1002b982c2 R12: 0000000000000000 R13: 1ffffffff28f3570 R14: 0000000000000002 R15: ffff888015cc15c0 FS: 00007f6f7f8566c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020046000 CR3: 000000004c994000 CR4: 0000000000350ef0 Call Trace: page_table_check_free include/linux/page_table_check.h:41 [inline] free_pages_prepare mm/page_alloc.c:1142 [inline] free_unref_page_prepare+0x99a/0xab0 mm/page_alloc.c:2347 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487 dec_usb_memory_use_count+0x259/0x350 drivers/usb/core/devio.c:198 mmap_region+0x145b/0x1e50 mm/mmap.c:2939 do_mmap+0x7af/0xe60 mm/mmap.c:1385 vm_mmap_pgoff+0x1e3/0x420 mm/util.c:573 ksys_mmap_pgoff+0x504/0x6e0 mm/mmap.c:1431 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6f7ea7dd69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6f7f8560c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f6f7ebabf80 RCX: 00007f6f7ea7dd69 RDX: 000000000200000f RSI: 0000000000004000 RDI: 0000000020ff9000 RBP: 00007f6f7eaca49e R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6f7ebabf80 R15: 00007fff64f9ca98 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__page_table_check_zero+0x2d8/0x4a0 mm/page_table_check.c:146 Code: ff cb e9 b5 fd ff ff e8 e6 4d 8f ff 48 ff cb e9 27 fe ff ff e8 d9 4d 8f ff 90 0f 0b e8 d1 4d 8f ff 90 0f 0b e8 c9 4d 8f ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 91 52 8f RSP: 0018:ffffc9000fbf7968 EFLAGS: 00010287 RAX: ffffffff8206bab7 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc9001e271000 RSI: 0000000000003d34 RDI: 0000000000003d35 RBP: ffff888015cc160c R08: ffff888015cc160f R09: 1ffff11002b982c1 R10: dffffc0000000000 R11: ffffed1002b982c2 R12: 0000000000000000 R13: 1ffffffff28f3570 R14: 0000000000000002 R15: ffff888015cc15c0 FS: 00007f6f7f8566c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020160000 CR3: 000000004c994000 CR4: 0000000000350ef0