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: 1 UID: 0 PID: 13971 Comm: syz.4.1746 Not tainted 6.13.0-rc3-syzkaller-00062-gc061cf420ded #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:tomoyo_print_entry+0x83/0x2720 security/tomoyo/common.c:1387 Code: f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 38 01 00 00 31 c0 e8 8e 06 49 fd 48 8d 7d 19 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 18 38 d0 7f 08 84 c0 0f 85 2e 14 00 00 49 8d 8e f3 00 00 RSP: 0018:ffffc9000423fa90 EFLAGS: 00010202 RAX: 0000000000000003 RBX: dffffc0000000000 RCX: ffffffff8450705e RDX: 0000000000000001 RSI: ffffffff84504862 RDI: 0000000000000019 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000003 R12: ffffed100c08d61a R13: ffff888027cba090 R14: ffff88806046b000 R15: 0000000000000001 FS: 00007fb41f5d56c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020009000 CR3: 000000005e1f2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tomoyo_read_domain2+0xa3/0x380 security/tomoyo/common.c:1596 tomoyo_read_domain security/tomoyo/common.c:1649 [inline] tomoyo_read_domain+0x3d2/0x9c0 security/tomoyo/common.c:1610 tomoyo_read_control+0x281/0x510 security/tomoyo/common.c:2591 vfs_read+0x1df/0xbe0 fs/read_write.c:563 ksys_read+0x12b/0x250 fs/read_write.c:708 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: 0033:0x7fb421785d29 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:00007fb41f5d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fb421976160 RCX: 00007fb421785d29 RDX: 000000000000fd98 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007fb421801a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb421976160 R15: 00007fff662dfe38 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:tomoyo_print_entry+0x83/0x2720 security/tomoyo/common.c:1387 Code: f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 38 01 00 00 31 c0 e8 8e 06 49 fd 48 8d 7d 19 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 18 38 d0 7f 08 84 c0 0f 85 2e 14 00 00 49 8d 8e f3 00 00 RSP: 0018:ffffc9000423fa90 EFLAGS: 00010202 RAX: 0000000000000003 RBX: dffffc0000000000 RCX: ffffffff8450705e RDX: 0000000000000001 RSI: ffffffff84504862 RDI: 0000000000000019 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000003 R12: ffffed100c08d61a R13: ffff888027cba090 R14: ffff88806046b000 R15: 0000000000000001 FS: 00007fb41f5d56c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fd83e97680 CR3: 000000005e1f2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: f3 65 48 8b 04 25 28 repz mov %gs:0x28,%rax 7: 00 00 00 a: 48 89 84 24 38 01 00 mov %rax,0x138(%rsp) 11: 00 12: 31 c0 xor %eax,%eax 14: e8 8e 06 49 fd call 0xfd4906a7 19: 48 8d 7d 19 lea 0x19(%rbp),%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 18 movzbl (%rax,%rbx,1),%eax <-- trapping instruction 2e: 38 d0 cmp %dl,%al 30: 7f 08 jg 0x3a 32: 84 c0 test %al,%al 34: 0f 85 2e 14 00 00 jne 0x1468 3a: 49 rex.WB 3b: 8d .byte 0x8d 3c: 8e f3 mov %ebx,%?