kasan: CONFIG_KASAN_INLINE enabled
 ptlock_init include/linux/mm.h:1764 [inline]
 pgtable_page_ctor include/linux/mm.h:1798 [inline]
 pte_alloc_one+0x57/0x100 arch/x86/mm/pgtable.c:33
 __do_huge_pmd_anonymous_page mm/huge_memory.c:568 [inline]
 do_huge_pmd_anonymous_page+0x8fc/0x1700 mm/huge_memory.c:731
kasan: GPF could be caused by NULL-ptr deref or user memory access
 create_huge_pmd mm/memory.c:4002 [inline]
 __handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4205
general protection fault: 0000 [#1] PREEMPT SMP KASAN
 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271
Modules linked in:
 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442
CPU: 0 PID: 20362 Comm: syz-executor.1 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1126
task: ffff8880a8f620c0 task.stack: ffff888080168000
RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:67
RIP: 0010:vhost_umem_interval_tree_iter_first drivers/vhost/vhost.c:53 [inline]
RIP: 0010:vhost_del_umem_range drivers/vhost/vhost.c:977 [inline]
RIP: 0010:vhost_process_iotlb_msg drivers/vhost/vhost.c:1048 [inline]
RIP: 0010:vhost_chr_write_iter drivers/vhost/vhost.c:1077 [inline]
RIP: 0010:vhost_chr_write_iter+0x873/0x1100 drivers/vhost/vhost.c:1061
RSP: 0018:ffff88807bbafc20 EFLAGS: 00050207
RSP: 0018:ffff88808016fc00 EFLAGS: 00010246
RAX: ffffed100f775fa0 RBX: 0000000000000034 RCX: 0000000000000006
RAX: dffffc0000000000 RBX: ffff888088f6c3c0 RCX: 0000000000000000
RDX: 0000000000000004 RSI: ffff88807bbafcc8 RDI: 0000000020000140
RDX: 0000000000000002 RSI: ffffffff857eee05 RDI: ffff888088f6c480
RBP: ffff88807bbafcc8 R08: 000000000000000a R09: ffffed100f775f9f
RBP: ffffed10111ed889 R08: 0000000000000000 R09: 0000000000000000
R10: ffff88807bbafcfb R11: ffff88808dc82440 R12: 0000000020000140
R10: 0000000000000002 R11: ffff8880a8f620c0 R12: 0000000000000002
R13: 00007ffffffff000 R14: 0000000020000174 R15: ffff8880af8e8540
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1101002df87
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:112 [inline]
 _copy_to_user+0xaa/0xd0 lib/usercopy.c:28
FS:  00007fae16731700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
 copy_to_user include/linux/uaccess.h:155 [inline]
 ax25_ioctl+0x6a7/0x990 net/ax25/af_ax25.c:1853
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7e274d000 CR3: 00000000a2697000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_do_ioctl net/socket.c:974 [inline]
 sock_ioctl+0x2cc/0x4c0 net/socket.c:1071
 call_write_iter include/linux/fs.h:1780 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f270445b0d9
RIP: 0033:0x7fae181bf0d9
RSP: 002b:00007f27029cd168 EFLAGS: 00000246
RSP: 002b:00007fae16731168 EFLAGS: 00000246
 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f270457af80 RCX: 00007f270445b0d9
 ORIG_RAX: 0000000000000001
RDX: 0000000020000140 RSI: 00000000000089e9 RDI: 0000000000000004
RAX: ffffffffffffffda RBX: 00007fae182def80 RCX: 00007fae181bf0d9
RBP: 00007f27029cd1d0 R08: 0000000000000000 R09: 0000000000000000
RDX: 0000000000000048 RSI: 00000000200001c0 RDI: 0000000000000004
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
RBP: 00007fae1821aae9 R08: 0000000000000000 R09: 0000000000000000
R13: 00007ffd251f4abf R14: 00007f27029cd300 R15: 0000000000022000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe1f08023f R14: 00007fae16731300 R15: 0000000000022000
Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 c6 06 00 00 4c 8b ab c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 <80> 3c 01 00 0f 85 8f 06 00 00 49 8b 6d 00 48 85 ed 0f 84 e4 03 
RIP: vhost_umem_interval_tree_iter_first drivers/vhost/vhost.c:53 [inline] RSP: ffff88808016fc00
RIP: vhost_del_umem_range drivers/vhost/vhost.c:977 [inline] RSP: ffff88808016fc00
RIP: vhost_process_iotlb_msg drivers/vhost/vhost.c:1048 [inline] RSP: ffff88808016fc00
RIP: vhost_chr_write_iter drivers/vhost/vhost.c:1077 [inline] RSP: ffff88808016fc00
RIP: vhost_chr_write_iter+0x873/0x1100 drivers/vhost/vhost.c:1061 RSP: ffff88808016fc00
---[ end trace b3757d6a9e50106d ]---
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	f9                   	stc
   4:	48 c1 e9 03          	shr    $0x3,%rcx
   8:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
   c:	0f 85 c6 06 00 00    	jne    0x6d8
  12:	4c 8b ab c0 00 00 00 	mov    0xc0(%rbx),%r13
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	4c 89 e9             	mov    %r13,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1) <-- trapping instruction
  2e:	0f 85 8f 06 00 00    	jne    0x6c3
  34:	49 8b 6d 00          	mov    0x0(%r13),%rbp
  38:	48 85 ed             	test   %rbp,%rbp
  3b:	0f                   	.byte 0xf
  3c:	84 e4                	test   %ah,%ah
  3e:	03                   	.byte 0x3