------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:146! invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 7981 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__page_table_check_zero+0x2d8/0x4a0 mm/page_table_check.c:146 Code: ff cb e9 b5 fd ff ff e8 56 00 91 ff 48 ff cb e9 27 fe ff ff e8 49 00 91 ff 90 0f 0b e8 41 00 91 ff 90 0f 0b e8 39 00 91 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 01 05 91 RSP: 0018:ffffc9000390f968 EFLAGS: 00010287 RAX: ffffffff8203f517 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc90012a2e000 RSI: 0000000000003664 RDI: 0000000000003665 RBP: ffff888018c7d22c R08: ffff888018c7d22f R09: 1ffff1100318fa45 R10: dffffc0000000000 R11: ffffed100318fa46 R12: 0000000000000000 R13: 1ffffffff28a8918 R14: 0000000000000000 R15: ffff888018c7d1e0 FS: 00007f83215c86c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f027c1ad988 CR3: 000000002a482000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x97c/0xa90 mm/page_alloc.c:2346 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486 dec_usb_memory_use_count+0x259/0x350 drivers/usb/core/devio.c:198 mmap_region+0x134d/0x1fa0 mm/mmap.c:2957 do_mmap+0x7af/0xe60 mm/mmap.c:1387 vm_mmap_pgoff+0x1e3/0x420 mm/util.c:573 ksys_mmap_pgoff+0x504/0x6e0 mm/mmap.c:1433 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f832087de69 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:00007f83215c80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f83209abf80 RCX: 00007f832087de69 RDX: 00000000ffffff1f RSI: 0000000000001000 RDI: 0000000020000000 RBP: 00007f83208ca47a R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f83209abf80 R15: 00007f8320acfa48 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 56 00 91 ff 48 ff cb e9 27 fe ff ff e8 49 00 91 ff 90 0f 0b e8 41 00 91 ff 90 0f 0b e8 39 00 91 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 01 05 91 RSP: 0018:ffffc9000390f968 EFLAGS: 00010287 RAX: ffffffff8203f517 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc90012a2e000 RSI: 0000000000003664 RDI: 0000000000003665 RBP: ffff888018c7d22c R08: ffff888018c7d22f R09: 1ffff1100318fa45 R10: dffffc0000000000 R11: ffffed100318fa46 R12: 0000000000000000 R13: 1ffffffff28a8918 R14: 0000000000000000 R15: ffff888018c7d1e0 FS: 00007f83215c86c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555f683788 CR3: 000000002a482000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400