general protection fault, probably for non-canonical address 0xdffffc000000001d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000e8-0x00000000000000ef]
CPU: 0 PID: 5077 Comm: syz-executor368 Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:__lock_acquire+0x109/0x5de0 kernel/locking/lockdep.c:5004
Code: 45 85 c9 0f 84 cc 0e 00 00 44 8b 05 11 d6 81 0b 45 85 c0 0f 84 be 0d 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 d1 48 c1 e9 03 <80> 3c 11 00 0f 85 e8 40 00 00 49 81 3a a0 89 b5 90 0f 84 96 0d 00
RSP: 0018:ffffc900039ff798 EFLAGS: 00010006
RAX: ffff888016bd8000 RBX: 1ffff9200073ff23 RCX: 000000000000001d
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 00000000000000e8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00000000000000e8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd3c23b3a8 CR3: 0000000015bf0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5753 [inline]
 lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
 down_write+0x93/0x200 kernel/locking/rwsem.c:1579
 hugetlb_vma_lock_write mm/hugetlb.c:300 [inline]
 hugetlb_vma_lock_write+0xae/0x100 mm/hugetlb.c:291
 __hugetlb_zap_begin+0x1e9/0x2b0 mm/hugetlb.c:5708
 hugetlb_zap_begin include/linux/hugetlb.h:258 [inline]
 unmap_vmas+0x2f4/0x470 mm/memory.c:1742
 exit_mmap+0x1ad/0xa60 mm/mmap.c:3308
 __mmput+0x12a/0x4d0 kernel/fork.c:1349
 mmput+0x62/0x70 kernel/fork.c:1371
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9ad/0x2ae0 kernel/exit.c:858
 __do_sys_exit kernel/exit.c:988 [inline]
 __se_sys_exit kernel/exit.c:986 [inline]
 __x64_sys_exit+0x42/0x50 kernel/exit.c:986
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fc5bf4e0af9
Code: Unable to access opcode bytes at 0x7fc5bf4e0acf.
RSP: 002b:00007ffd3c23b4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc5bf4e0af9
RDX: 00007fc5bf51a433 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000012428 R08: 0000000000000000 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3c23b4bc
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x109/0x5de0 kernel/locking/lockdep.c:5004
Code: 45 85 c9 0f 84 cc 0e 00 00 44 8b 05 11 d6 81 0b 45 85 c0 0f 84 be 0d 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 d1 48 c1 e9 03 <80> 3c 11 00 0f 85 e8 40 00 00 49 81 3a a0 89 b5 90 0f 84 96 0d 00
RSP: 0018:ffffc900039ff798 EFLAGS: 00010006
RAX: ffff888016bd8000 RBX: 1ffff9200073ff23 RCX: 000000000000001d
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 00000000000000e8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00000000000000e8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd3c23b3a8 CR3: 0000000015bf0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	45 85 c9             	test   %r9d,%r9d
   3:	0f 84 cc 0e 00 00    	je     0xed5
   9:	44 8b 05 11 d6 81 0b 	mov    0xb81d611(%rip),%r8d        # 0xb81d621
  10:	45 85 c0             	test   %r8d,%r8d
  13:	0f 84 be 0d 00 00    	je     0xdd7
  19:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  20:	fc ff df
  23:	4c 89 d1             	mov    %r10,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1) <-- trapping instruction
  2e:	0f 85 e8 40 00 00    	jne    0x411c
  34:	49 81 3a a0 89 b5 90 	cmpq   $0xffffffff90b589a0,(%r10)
  3b:	0f                   	.byte 0xf
  3c:	84                   	.byte 0x84
  3d:	96                   	xchg   %eax,%esi
  3e:	0d                   	.byte 0xd