general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 87 Comm: kswapd0 Not tainted 6.7.0-rc6-next-20231221-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:63 [inline]
RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:83 [inline]
RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:72 [inline]
RIP: 0010:scatterwalk_copychunks+0x3e0/0x560 crypto/scatterwalk.c:50
Code: f0 48 c1 e8 03 80 3c 08 00 0f 85 81 01 00 00 49 8d 44 24 08 4d 89 26 48 bf 00 00 00 00 00 fc ff df 48 89 44 24 10 48 c1 e8 03 <0f> b6 04 38 84 c0 74 08 3c 03 0f 8e 47 01 00 00 48 8b 44 24 08 41
RSP: 0018:ffffc900015f6f30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffff888017731dc0 RSI: ffffffff8465c984 RDI: dffffc0000000000
RBP: 0000000000001000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 42feb206ec876950 R12: 0000000000000000
R13: 0000000000000014 R14: ffffc900015f6fc8 R15: 0000000000001000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a37b0c8040 CR3: 00000000292ce000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 scatterwalk_map_and_copy+0x151/0x1d0 crypto/scatterwalk.c:67
 scomp_acomp_comp_decomp+0x3a3/0x780 crypto/scompress.c:149
 crypto_acomp_compress include/crypto/acompress.h:302 [inline]
 zswap_store+0x98b/0x2430 mm/zswap.c:1666
 swap_writepage+0x8e/0x220 mm/page_io.c:198
 pageout+0x399/0x9e0 mm/vmscan.c:656
 shrink_folio_list+0x2f47/0x3ea0 mm/vmscan.c:1319
 evict_folios+0x6e6/0x1b90 mm/vmscan.c:4503
 try_to_shrink_lruvec+0x638/0xa10 mm/vmscan.c:4708
 shrink_one+0x3f4/0x7b0 mm/vmscan.c:4747
 shrink_many mm/vmscan.c:4812 [inline]
 lru_gen_shrink_node mm/vmscan.c:4927 [inline]
 shrink_node+0x2144/0x3740 mm/vmscan.c:5867
 kswapd_shrink_node mm/vmscan.c:6672 [inline]
 balance_pgdat+0x9d0/0x1a90 mm/vmscan.c:6862
 kswapd+0x5c1/0xc10 mm/vmscan.c:7122
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </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_pagedone include/crypto/scatterwalk.h:72 [inline]
RIP: 0010:scatterwalk_copychunks+0x3e0/0x560 crypto/scatterwalk.c:50
Code: f0 48 c1 e8 03 80 3c 08 00 0f 85 81 01 00 00 49 8d 44 24 08 4d 89 26 48 bf 00 00 00 00 00 fc ff df 48 89 44 24 10 48 c1 e8 03 <0f> b6 04 38 84 c0 74 08 3c 03 0f 8e 47 01 00 00 48 8b 44 24 08 41
RSP: 0018:ffffc900015f6f30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffff888017731dc0 RSI: ffffffff8465c984 RDI: dffffc0000000000
RBP: 0000000000001000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 42feb206ec876950 R12: 0000000000000000
R13: 0000000000000014 R14: ffffc900015f6fc8 R15: 0000000000001000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a37b0c8040 CR3: 00000000292ce000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	f0 48 c1 e8 03       	lock shr $0x3,%rax
   5:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
   9:	0f 85 81 01 00 00    	jne    0x190
   f:	49 8d 44 24 08       	lea    0x8(%r12),%rax
  14:	4d 89 26             	mov    %r12,(%r14)
  17:	48 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdi
  1e:	fc ff df
  21:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 38          	movzbl (%rax,%rdi,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 08                	je     0x3a
  32:	3c 03                	cmp    $0x3,%al
  34:	0f 8e 47 01 00 00    	jle    0x181
  3a:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  3f:	41                   	rex.B