------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:146! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 19520 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-08995-g0450d2083be6 #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 16 bb 8e ff 48 ff cb e9 27 fe ff ff e8 09 bb 8e ff 90 0f 0b e8 01 bb 8e ff 90 0f 0b e8 f9 ba 8e ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 c1 bf 8e RSP: 0018:ffffc900049d7968 EFLAGS: 00010283 RAX: ffffffff820776b7 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc90003f71000 RSI: 0000000000006a66 RDI: 0000000000006a67 RBP: ffff8880185704cc R08: ffff8880185704cf R09: 1ffff110030ae099 R10: dffffc0000000000 R11: ffffed10030ae09a R12: 0000000000000000 R13: 1ffffffff2900b90 R14: 0000000000000002 R15: ffff888018570480 FS: 00007f9bb128a6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30a22000 CR3: 0000000011eae000 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+0x13ab/0x1ef0 mm/mmap.c:2941 do_mmap+0x7b0/0xe70 mm/mmap.c:1387 vm_mmap_pgoff+0x1e3/0x420 mm/util.c:573 ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1433 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: 0033:0x7f9bb047cee9 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:00007f9bb128a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f9bb05abf80 RCX: 00007f9bb047cee9 RDX: 000000000200000f RSI: 0000000000004000 RDI: 0000000020ff9000 RBP: 00007f9bb04c949e R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9bb05abf80 R15: 00007ffe5a491348 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 16 bb 8e ff 48 ff cb e9 27 fe ff ff e8 09 bb 8e ff 90 0f 0b e8 01 bb 8e ff 90 0f 0b e8 f9 ba 8e ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 c1 bf 8e RSP: 0018:ffffc900049d7968 EFLAGS: 00010283 RAX: ffffffff820776b7 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc90003f71000 RSI: 0000000000006a66 RDI: 0000000000006a67 RBP: ffff8880185704cc R08: ffff8880185704cf R09: 1ffff110030ae099 R10: dffffc0000000000 R11: ffffed10030ae09a R12: 0000000000000000 R13: 1ffffffff2900b90 R14: 0000000000000002 R15: ffff888018570480 FS: 00007f9bb128a6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f891c279f13 CR3: 0000000011eae000 CR4: 0000000000350ef0