BUG: unable to handle page fault for address: fffffbc0bd3d4e00
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe4067 P4D 23ffe4067 PUD 13fe26067 PMD 13fe25067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5326 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221115-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:get_desc+0x128/0x460 arch/x86/lib/insn-eval.c:660
Code: de 02 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 c9 02 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 d8 48 c1 e8 03 <0f> b6 0c 10 48 8d 43 07 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89 de
RSP: 0018:ffffc90003f1fd08 EFLAGS: 00010a06
RAX: 1fffffc0bd3d4e00 RBX: fffffe05e9ea7000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffffc90003f1fdc0 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920007e3fa1
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007f99f3277700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbc0bd3d4e00 CR3: 000000002a056000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
insn_get_seg_base arch/x86/lib/insn-eval.c:725 [inline]
insn_get_effective_ip+0x18b/0x200 arch/x86/lib/insn-eval.c:1476
fixup_iopl_exception+0xd0/0x220 arch/x86/kernel/traps.c:627
__exc_general_protection arch/x86/kernel/traps.c:752 [inline]
exc_general_protection+0x17a/0x220 arch/x86/kernel/traps.c:728
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0003:0x7f99f25abf8c
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 bf 5a f2 99 7f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 <00> 00 00 00 48 00 00 f2 99 7f 00 00 ff ff ff ff ff ff ff ff 01 00
RSP: 0003:00007f99f25abf80 EFLAGS: 00010f46
RAX: 0000000028fee6d8 RBX: 0000000000000000 RCX: 00007f99f25abf88
RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f99f25abf80
R10: 0000000000000000 R11: ffffffff00000b82 R12: 00007f99f25abfb0
R13: 00007f99f2562040 R14: 0000000000000046 R15: 00000000290109e2
</TASK>
Modules linked in:
CR2: fffffbc0bd3d4e00
---[ end trace 0000000000000000 ]---
RIP: 0010:get_desc+0x128/0x460 arch/x86/lib/insn-eval.c:660
Code: de 02 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 c9 02 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 d8 48 c1 e8 03 <0f> b6 0c 10 48 8d 43 07 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89 de
RSP: 0018:ffffc90003f1fd08 EFLAGS: 00010a06
RAX: 1fffffc0bd3d4e00 RBX: fffffe05e9ea7000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffffc90003f1fdc0 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920007e3fa1
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007f99f3277700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbc0bd3d4e00 CR3: 000000002a056000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: de 02 fiadds (%rdx)
2: 00 00 add %al,(%rax)
4: 83 e0 07 and $0x7,%eax
7: 38 c2 cmp %al,%dl
9: 0f 9e c1 setle %cl
c: 84 d2 test %dl,%dl
e: 0f 95 c0 setne %al
11: 84 c1 test %al,%cl
13: 0f 85 c9 02 00 00 jne 0x2e2
19: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
20: fc ff df
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 0f b6 0c 10 movzbl (%rax,%rdx,1),%ecx <-- trapping instruction
2e: 48 8d 43 07 lea 0x7(%rbx),%rax
32: 48 89 c6 mov %rax,%rsi
35: 48 c1 ee 03 shr $0x3,%rsi
39: 0f b6 14 16 movzbl (%rsi,%rdx,1),%edx
3d: 48 89 de mov %rbx,%rsi