R10: 0000000000011012 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000006e R14: 00007fad8fb06058 R15: 00007ffc00a87868
 </TASK>
------------[ cut here ]------------
kernel BUG at mm/page_table_check.c:157!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 6543 Comm: syz.0.353 Not tainted 6.10.0-syzkaller-12888-g5437f30d3458 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__page_table_check_zero+0x306/0x370 mm/page_table_check.c:157
Code: ff 48 89 ef e8 ab d0 ff ff 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f e9 a8 8e 98 ff e8 a3 8e 98 ff 90 0f 0b e8 9b 8e 98 ff 90 <0f> 0b e8 93 8e 98 ff 90 0f 0b e8 9b b5 f5 ff e9 85 fd ff ff 48 c7
RSP: 0018:ffffc9000357f9f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81f1fffb
RDX: ffff888028dba440 RSI: ffffffff81f20115 RDI: 0000000000000005
RBP: ffff888018190000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000a R14: ffff88801819004c R15: dffffc0000000000
FS:  00007fad907e96c0(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001d200 CR3: 000000002794a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 page_table_check_free include/linux/page_table_check.h:41 [inline]
 free_pages_prepare mm/page_alloc.c:1095 [inline]
 __free_pages_ok+0x5d4/0xbd0 mm/page_alloc.c:1214
 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
 usbdev_mmap+0x7a7/0xae0 drivers/usb/core/devio.c:285
 call_mmap include/linux/fs.h:2129 [inline]
 mmap_region+0x757/0x2760 mm/mmap.c:2957
 do_mmap+0xbfb/0xfb0 mm/mmap.c:1468
 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588
 ksys_mmap_pgoff+0x332/0x5d0 mm/mmap.c:1514
 __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: 0033:0x7fad8f977299
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:00007fad907e9048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fad8fb06058 RCX: 00007fad8f977299
RDX: 000000000000000f RSI: 0000000000400000 RDI: 0000000020000000
RBP: 00007fad907e90a0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000011012 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000006e R14: 00007fad8fb06058 R15: 00007ffc00a87868
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__page_table_check_zero+0x306/0x370 mm/page_table_check.c:157
Code: ff 48 89 ef e8 ab d0 ff ff 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f e9 a8 8e 98 ff e8 a3 8e 98 ff 90 0f 0b e8 9b 8e 98 ff 90 <0f> 0b e8 93 8e 98 ff 90 0f 0b e8 9b b5 f5 ff e9 85 fd ff ff 48 c7
RSP: 0018:ffffc9000357f9f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81f1fffb
RDX: ffff888028dba440 RSI: ffffffff81f20115 RDI: 0000000000000005
RBP: ffff888018190000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000a R14: ffff88801819004c R15: dffffc0000000000
FS:  00007fad907e96c0(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001d200 CR3: 000000002794a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400