------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:157! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 17053 Comm: syz.7.2600 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__page_table_check_zero+0x2f8/0x360 mm/page_table_check.c:157 Code: ff 48 89 ef e8 69 d1 ff ff 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f e9 06 5a 92 ff e8 01 5a 92 ff 90 0f 0b e8 f9 59 92 ff 90 <0f> 0b e8 f1 59 92 ff 90 0f 0b e8 39 e0 f3 ff e9 8a fd ff ff 48 c7 RSP: 0018:ffffc90004237868 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81fb216d RDX: ffff88802f4a4880 RSI: ffffffff81fb2287 RDI: 0000000000000005 RBP: ffff88801d630000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000000a R14: ffff88801d63004c R15: dffffc0000000000 FS: 00007fb0165de6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb0165ddf98 CR3: 0000000035496000 CR4: 00000000003526f0 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:1109 [inline] __free_pages_ok+0x54e/0xb70 mm/page_alloc.c:1250 hcd_buffer_free_pages+0xe8/0x180 drivers/usb/core/buffer.c:210 dec_usb_memory_use_count+0x27b/0x410 drivers/usb/core/devio.c:198 mmap_region+0x1e06/0x28f0 mm/mmap.c:1576 do_mmap+0xc00/0xfc0 mm/mmap.c:496 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb016b7e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb0165de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fb016d36130 RCX: 00007fb016b7e719 RDX: 000000000000000f RSI: 0000000000400000 RDI: 0000000020000000 RBP: 00007fb016bf132e R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000011012 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb016d36130 R15: 00007fff5db8a158 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__page_table_check_zero+0x2f8/0x360 mm/page_table_check.c:157 Code: ff 48 89 ef e8 69 d1 ff ff 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f e9 06 5a 92 ff e8 01 5a 92 ff 90 0f 0b e8 f9 59 92 ff 90 <0f> 0b e8 f1 59 92 ff 90 0f 0b e8 39 e0 f3 ff e9 8a fd ff ff 48 c7 RSP: 0018:ffffc90004237868 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81fb216d RDX: ffff88802f4a4880 RSI: ffffffff81fb2287 RDI: 0000000000000005 RBP: ffff88801d630000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000000a R14: ffff88801d63004c R15: dffffc0000000000 FS: 00007fb0165de6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff2c3b3ff8 CR3: 0000000035496000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400