------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:146! invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 672 Comm: syz-executor.0 Not tainted 6.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:__page_table_check_zero+0x2d8/0x4a0 mm/page_table_check.c:146 Code: ff cb e9 b5 fd ff ff e8 e6 36 92 ff 48 ff cb e9 27 fe ff ff e8 d9 36 92 ff 90 0f 0b e8 d1 36 92 ff 90 0f 0b e8 c9 36 92 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 91 3b 92 RSP: 0018:ffffc9000d35f998 EFLAGS: 00010283 RAX: ffffffff82013577 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc90003c71000 RSI: 000000000000c3b4 RDI: 000000000000c3b5 RBP: ffff888016a3004c R08: ffff888016a3004f R09: 1ffff11002d46009 R10: dffffc0000000000 R11: ffffed1002d4600a R12: 0000000000000000 R13: 1ffffffff289dac4 R14: 000000000000000a R15: ffff888016a30000 FS: 00007f48731af6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f69417d1dc3 CR3: 00000000481e2000 CR4: 00000000003506f0 Call Trace: page_table_check_free include/linux/page_table_check.h:41 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] __free_pages_ok+0xc56/0xd70 mm/page_alloc.c:1269 dec_usb_memory_use_count+0x259/0x350 drivers/usb/core/devio.c:198 mmap_region+0x134c/0x1fa0 mm/mmap.c:2949 do_mmap+0x7ae/0xe60 mm/mmap.c:1379 vm_mmap_pgoff+0x1e2/0x420 mm/util.c:556 ksys_mmap_pgoff+0x503/0x6e0 mm/mmap.c:1425 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f487247dda9 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:00007f48731af0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f48725abf80 RCX: 00007f487247dda9 RDX: 0000000002000007 RSI: 0000000000400000 RDI: 0000000020000000 RBP: 00007f48724ca47a R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f48725abf80 R15: 00007f48726cfa48 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 36 92 ff 48 ff cb e9 27 fe ff ff e8 d9 36 92 ff 90 0f 0b e8 d1 36 92 ff 90 0f 0b e8 c9 36 92 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 91 3b 92 RSP: 0018:ffffc9000d35f998 EFLAGS: 00010283 RAX: ffffffff82013577 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc90003c71000 RSI: 000000000000c3b4 RDI: 000000000000c3b5 RBP: ffff888016a3004c R08: ffff888016a3004f R09: 1ffff11002d46009 R10: dffffc0000000000 R11: ffffed1002d4600a R12: 0000000000000000 R13: 1ffffffff289dac4 R14: 000000000000000a R15: ffff888016a30000 FS: 00007f48731af6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf20779198 CR3: 00000000481e2000 CR4: 00000000003506f0