general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 6.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: pencrypt_parallel padata_parallel_worker
RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:63 [inline]
RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:83 [inline]
RIP: 0010:scatterwalk_copychunks+0x329/0x460 crypto/scatterwalk.c:50
Code: ff df 48 8b 44 24 10 42 80 3c 20 00 4c 8b 6c 24 08 74 08 4c 89 ef e8 06 e2 e6 fd 49 89 6d 00 48 83 c5 08 48 89 e8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 c6 00 00 00 8b 5d 00 48 8b 44 24 38 42
RSP: 0018:ffffc90000b27760 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888014ac0000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000008 R08: ffffffff84340a62 R09: 1ffffffff1d30add
R10: dffffc0000000000 R11: fffffbfff1d30ade R12: dffffc0000000000
R13: ffffc90000b27a20 R14: 0000000000000000 R15: ffffc90000b27a28
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd8e27bff8 CR3: 000000005571c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 skcipher_next_slow+0x39d/0x470 crypto/skcipher.c:296
 skcipher_walk_next+0x630/0xba0 crypto/skcipher.c:381
 crypto_ctr_crypt+0x3ac/0x690 crypto/ctr.c:116
 crypto_gcm_encrypt+0x341/0x7f0 crypto/gcm.c:459
 pcrypt_aead_enc+0x17/0x80 crypto/pcrypt.c:83
 padata_parallel_worker+0x5e/0x1a0 kernel/padata.c:152
 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:63 [inline]
RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:83 [inline]
RIP: 0010:scatterwalk_copychunks+0x329/0x460 crypto/scatterwalk.c:50
Code: ff df 48 8b 44 24 10 42 80 3c 20 00 4c 8b 6c 24 08 74 08 4c 89 ef e8 06 e2 e6 fd 49 89 6d 00 48 83 c5 08 48 89 e8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 c6 00 00 00 8b 5d 00 48 8b 44 24 38 42
RSP: 0018:ffffc90000b27760 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888014ac0000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000008 R08: ffffffff84340a62 R09: 1ffffffff1d30add
R10: dffffc0000000000 R11: fffffbfff1d30ade R12: dffffc0000000000
R13: ffffc90000b27a20 R14: 0000000000000000 R15: ffffc90000b27a28
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000000d130000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	df 48 8b             	fisttps -0x75(%rax)
   3:	44 24 10             	rex.R and $0x10,%al
   6:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   b:	4c 8b 6c 24 08       	mov    0x8(%rsp),%r13
  10:	74 08                	je     0x1a
  12:	4c 89 ef             	mov    %r13,%rdi
  15:	e8 06 e2 e6 fd       	call   0xfde6e220
  1a:	49 89 6d 00          	mov    %rbp,0x0(%r13)
  1e:	48 83 c5 08          	add    $0x8,%rbp
  22:	48 89 e8             	mov    %rbp,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 c6 00 00 00    	jne    0xfc
  36:	8b 5d 00             	mov    0x0(%rbp),%ebx
  39:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
  3e:	42                   	rex.X