BUG: unable to handle page fault for address: fffffbccc5742e06
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 6dfd0067 P4D 6dfd0067 PUD 6dec4067 PMD 6dec3067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 7220 Comm: syz-executor.3 Not tainted 6.1.0-rc5-next-20221114 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:get_desc+0x128/0x460
Code: e2 02 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 cd 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: 0000:ffff888043067bf8 EFLAGS: 00010216
RAX: 1fffffccc5742e06 RBX: fffffe662ba17030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff888043067cb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff1100860cf7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007f6e53db2700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbccc5742e06 CR3: 0000000035230000 CR4: 0000000000350ef0
Call Trace:
insn_get_code_seg_params+0xab/0x1b0
insn_decode_from_regs+0x72/0x190
fixup_umip_exception+0xcb/0x6d0
exc_general_protection+0x161/0x220
asm_exc_general_protection+0x26/0x30
RIP: 0033:0x7f6e5683cb21
Code: 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 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000200000c0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f6e5694ff60 RCX: 00007f6e5683cb19
RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 000000002c920500
RBP: 00007f6e56896f6d R08: 0000000020000200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc498fe76f R14: 00007f6e53db2300 R15: 0000000000022000
Modules linked in:
CR2: fffffbccc5742e06
---[ end trace 0000000000000000 ]---
RIP: 0010:get_desc+0x128/0x460
Code: e2 02 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 cd 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: 0000:ffff888043067bf8 EFLAGS: 00010216
RAX: 1fffffccc5742e06 RBX: fffffe662ba17030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff888043067cb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff1100860cf7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007f6e53db2700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbccc5742e06 CR3: 0000000035230000 CR4: 0000000000350ef0
device lo entered promiscuous mode
loop2: detected capacity change from 0 to 27
FAT-fs (loop2): Unrecognized mount option "ioharset=koi8-u" or missing value
device lo left promiscuous mode
device lo entered promiscuous mode
device lo entered promiscuous mode
BUG: unable to handle page fault for address: fffffbccc5742e06
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 6dfd0067 P4D 6dfd0067 PUD 6dec4067 PMD 6dec3067 PTE 0
Oops: 0000 [#2] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 7256 Comm: syz-executor.3 Tainted: G D 6.1.0-rc5-next-20221114 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:get_desc+0x128/0x460
Code: e2 02 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 cd 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: 0000:ffff888016937bf8 EFLAGS: 00010216
RAX: 1fffffccc5742e06 RBX: fffffe662ba17030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff888016937cb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff11002d26f7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007f6e53db2700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbccc5742e06 CR3: 0000000018afc000 CR4: 0000000000350ef0
Call Trace:
insn_get_code_seg_params+0xab/0x1b0
insn_decode_from_regs+0x72/0x190
fixup_umip_exception+0xcb/0x6d0
exc_general_protection+0x161/0x220
asm_exc_general_protection+0x26/0x30
RIP: 0033:0x7f6e5683cb21
Code: 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 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000200000c0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f6e5694ff60 RCX: 00007f6e5683cb19
RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 000000002c920500
RBP: 00007f6e56896f6d R08: 0000000020000200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc498fe76f R14: 00007f6e53db2300 R15: 0000000000022000
Modules linked in:
CR2: fffffbccc5742e06
---[ end trace 0000000000000000 ]---
RIP: 0010:get_desc+0x128/0x460
Code: e2 02 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 cd 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: 0000:ffff888043067bf8 EFLAGS: 00010216
RAX: 1fffffccc5742e06 RBX: fffffe662ba17030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff888043067cb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff1100860cf7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007f6e53db2700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbccc5742e06 CR3: 0000000018afc000 CR4: 0000000000350ef0
loop2: detected capacity change from 0 to 27
FAT-fs (loop2): Unrecognized mount option "ioharset=koi8-u" or missing value
----------------
Code disassembly (best guess):
0: e2 02 loop 0x4
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 cd 02 00 00 jne 0x2e6
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