Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 1 UID: 0 PID: 20911 Comm: getty Not tainted 6.13.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:tomoyo_get_name+0xed/0x490 security/tomoyo/memory.c:167
Code: 48 8b 98 40 af 51 9a 48 39 dd 0f 84 53 01 00 00 49 bd 00 00 00 00 00 fc ff df e8 de 2c 47 fd 48 8d 7b 20 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 00 03 00 00 44 8b 7b 20 44
RSP: 0018:ffffc9000c44f2d0 EFLAGS: 00010202
RAX: 0000000000000004 RBX: 0000000000000000 RCX: ffffffff8452230d
RDX: ffff888064da9e00 RSI: ffffffff845222e2 RDI: 0000000000000020
RBP: ffffffff9a51afa0 R08: 0000000000000004 R09: 0000000000000000
R10: 000000008332dfba R11: 0000000000000001 R12: 000000008332dfba
R13: dffffc0000000000 R14: ffff888029ad8d0a R15: 0000000000000000
FS: 00007f89fe493380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561fe8218cc8 CR3: 0000000030f66000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
tomoyo_parse_name_union+0x121/0x1f0 security/tomoyo/util.c:260
tomoyo_update_path_acl security/tomoyo/file.c:395 [inline]
tomoyo_write_file+0x4d3/0x7f0 security/tomoyo/file.c:1022
tomoyo_write_domain2+0x129/0x1f0 security/tomoyo/common.c:1144
tomoyo_add_entry security/tomoyo/common.c:2034 [inline]
tomoyo_supervisor+0x4ad/0x1180 security/tomoyo/common.c:2095
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission security/tomoyo/file.c:587 [inline]
tomoyo_path_permission+0x270/0x3b0 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: 0033:0x7f89fe5e79a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff57111b40 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f89fe5e79a4
RDX: 0000000000000000 RSI: 00007f89fe77bf2c RDI: 00000000ffffff9c
RBP: 00007f89fe77bf2c R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f89fe78d513 R14: 0000000000000001 R15: 0000000000000002
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:tomoyo_get_name+0xed/0x490 security/tomoyo/memory.c:167
Code: 48 8b 98 40 af 51 9a 48 39 dd 0f 84 53 01 00 00 49 bd 00 00 00 00 00 fc ff df e8 de 2c 47 fd 48 8d 7b 20 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 00 03 00 00 44 8b 7b 20 44
RSP: 0018:ffffc9000c44f2d0 EFLAGS: 00010202
RAX: 0000000000000004 RBX: 0000000000000000 RCX: ffffffff8452230d
RDX: ffff888064da9e00 RSI: ffffffff845222e2 RDI: 0000000000000020
RBP: ffffffff9a51afa0 R08: 0000000000000004 R09: 0000000000000000
R10: 000000008332dfba R11: 0000000000000001 R12: 000000008332dfba
R13: dffffc0000000000 R14: ffff888029ad8d0a R15: 0000000000000000
FS: 00007f89fe493380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d0dff8 CR3: 0000000030f66000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 8b 98 40 af 51 9a mov -0x65ae50c0(%rax),%rbx
7: 48 39 dd cmp %rbx,%rbp
a: 0f 84 53 01 00 00 je 0x163
10: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
17: fc ff df
1a: e8 de 2c 47 fd call 0xfd472cfd
1f: 48 8d 7b 20 lea 0x20(%rbx),%rdi
23: 48 89 f8 mov %rdi,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 74 08 je 0x3b
33: 3c 03 cmp $0x3,%al
35: 0f 8e 00 03 00 00 jle 0x33b
3b: 44 8b 7b 20 mov 0x20(%rbx),%r15d
3f: 44 rex.R