Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 0 UID: 0 PID: 14538 Comm: syz.7.2302 Not tainted 6.13.0-rc3-syzkaller-00136-g8faabc041a00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:tomoyo_check_acl+0xb0/0x410 security/tomoyo/domain.c:173 Code: 00 0f 85 57 03 00 00 49 8b 5d 00 49 39 dd 0f 84 fc 01 00 00 e8 b1 08 48 fd 48 8d 7b 18 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 28 38 d0 7f 08 84 c0 0f 85 cc 02 00 00 44 0f b6 7b 18 31 RSP: 0018:ffffc9000b7cf718 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000000 RCX: ffffc90004951000 RDX: 0000000000000000 RSI: ffffffff8451463f RDI: 0000000000000018 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffc9000b7cf808 R13: ffff888025e22c90 R14: 0000000000000000 R15: 0000000000000000 FS: 00007ffbc1df66c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32c04ff8 CR3: 0000000022fba000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tomoyo_path_permission security/tomoyo/file.c:586 [inline] tomoyo_path_permission+0x1ff/0x3b0 security/tomoyo/file.c:573 tomoyo_check_open_permission+0x37d/0x3c0 security/tomoyo/file.c:777 tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334 security_file_open+0x84/0x1e0 security/security.c:3105 do_dentry_open+0x57e/0x1ea0 fs/open.c:928 vfs_open+0x82/0x3f0 fs/open.c:1075 do_open fs/namei.c:3828 [inline] path_openat+0x1e6a/0x2d60 fs/namei.c:3987 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1428 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: 0033:0x7ffbc3f85d29 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:00007ffbc1df6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ffbc4175fa0 RCX: 00007ffbc3f85d29 RDX: 0000000000080000 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00007ffbc4001aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffbc4175fa0 R15: 00007ffd1b154ef8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:tomoyo_check_acl+0xb0/0x410 security/tomoyo/domain.c:173 Code: 00 0f 85 57 03 00 00 49 8b 5d 00 49 39 dd 0f 84 fc 01 00 00 e8 b1 08 48 fd 48 8d 7b 18 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 28 38 d0 7f 08 84 c0 0f 85 cc 02 00 00 44 0f b6 7b 18 31 RSP: 0018:ffffc9000b7cf718 EFLAGS: 00010246 ---------------- Code disassembly (best guess): 0: 00 0f add %cl,(%rdi) 2: 85 57 03 test %edx,0x3(%rdi) 5: 00 00 add %al,(%rax) 7: 49 8b 5d 00 mov 0x0(%r13),%rbx b: 49 39 dd cmp %rbx,%r13 e: 0f 84 fc 01 00 00 je 0x210 14: e8 b1 08 48 fd call 0xfd4808ca 19: 48 8d 7b 18 lea 0x18(%rbx),%rdi 1d: 48 89 f8 mov %rdi,%rax 20: 48 89 fa mov %rdi,%rdx 23: 48 c1 e8 03 shr $0x3,%rax 27: 83 e2 07 and $0x7,%edx * 2a: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax <-- trapping instruction 2e: 38 d0 cmp %dl,%al 30: 7f 08 jg 0x3a 32: 84 c0 test %al,%al 34: 0f 85 cc 02 00 00 jne 0x306 3a: 44 0f b6 7b 18 movzbl 0x18(%rbx),%r15d 3f: 31 .byte 0x31