Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 UID: 0 PID: 9950 Comm: syz.3.1115 Not tainted 6.13.0-rc4-syzkaller-00069-g8379578b11d5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:memcmp+0x13f/0x1d0 lib/string.c:676
Code: 00 0f 85 1a ff ff ff 49 83 ec 08 48 83 c3 08 48 83 c5 08 49 83 fc 07 0f 86 fb fe ff ff 48 89 d8 48 89 de 48 c1 e8 03 83 e6 07 <42> 0f b6 14 28 48 8d 43 07 48 89 c1 48 c1 e9 03 42 0f b6 0c 29 40
RSP: 0018:ffffc90003787720 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000044 RCX: ffffc9000d46a000
RDX: 0000000000000020 RSI: 0000000000000004 RDI: 0000000000000044
RBP: ffff88803405cf44 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000020
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000042
FS:  00007f833ad3b6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000793000 CR3: 000000002f066000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ima_lookup_digest_entry security/integrity/ima/ima_queue.c:58 [inline]
 ima_add_template_entry+0x4c0/0x840 security/integrity/ima/ima_queue.c:172
 ima_store_template+0xdc/0x150 security/integrity/ima/ima_api.c:122
 ima_store_measurement+0x223/0x5c0 security/integrity/ima/ima_api.c:383
 process_measurement+0x1bcb/0x2370 security/integrity/ima/ima_main.c:380
 ima_file_mmap+0x1b3/0x1e0 security/integrity/ima/ima_main.c:462
 security_mmap_file+0x8bd/0x990 security/security.c:2977
 vm_mmap_pgoff+0xdb/0x360 mm/util.c:576
 ksys_mmap_pgoff+0x1c8/0x5c0 mm/mmap.c:542
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 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: 0033:0x7f8339f85d29
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:00007f833ad3b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f833a175fa0 RCX: 00007f8339f85d29
RDX: 00004000000000df RSI: 000000000000000c RDI: 0000000000000000
RBP: 00007f833a001b08 R08: 0000000000010006 R09: 0000300000000000
R10: 0000000000044eb2 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f833a175fa0 R15: 00007ffd207436c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:memcmp+0x13f/0x1d0 lib/string.c:676
Code: 00 0f 85 1a ff ff ff 49 83 ec 08 48 83 c3 08 48 83 c5 08 49 83 fc 07 0f 86 fb fe ff ff 48 89 d8 48 89 de 48 c1 e8 03 83 e6 07 <42> 0f b6 14 28 48 8d 43 07 48 89 c1 48 c1 e9 03 42 0f b6 0c 29 40
RSP: 0018:ffffc90003787720 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000044 RCX: ffffc9000d46a000
RDX: 0000000000000020 RSI: 0000000000000004 RDI: 0000000000000044
RBP: ffff88803405cf44 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000020
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000042
FS:  00007f833ad3b6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000087b000 CR3: 000000002f066000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	0f 85 1a ff ff ff    	jne    0xffffff20
   6:	49 83 ec 08          	sub    $0x8,%r12
   a:	48 83 c3 08          	add    $0x8,%rbx
   e:	48 83 c5 08          	add    $0x8,%rbp
  12:	49 83 fc 07          	cmp    $0x7,%r12
  16:	0f 86 fb fe ff ff    	jbe    0xffffff17
  1c:	48 89 d8             	mov    %rbx,%rax
  1f:	48 89 de             	mov    %rbx,%rsi
  22:	48 c1 e8 03          	shr    $0x3,%rax
  26:	83 e6 07             	and    $0x7,%esi
* 29:	42 0f b6 14 28       	movzbl (%rax,%r13,1),%edx <-- trapping instruction
  2e:	48 8d 43 07          	lea    0x7(%rbx),%rax
  32:	48 89 c1             	mov    %rax,%rcx
  35:	48 c1 e9 03          	shr    $0x3,%rcx
  39:	42 0f b6 0c 29       	movzbl (%rcx,%r13,1),%ecx
  3e:	40                   	rex