BUG: unable to handle page fault for address: fffffbc0634b1e06
#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: 7531 Comm: syz-executor.4 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:ffff88804026fbf8 EFLAGS: 00010216
RAX: 1fffffc0634b1e06 RBX: fffffe031a58f030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff88804026fcb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff1100804df7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007fc305476700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbc0634b1e06 CR3: 0000000009570000 CR4: 0000000000350ef4
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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: 0033:0x7fff5d900946
Code: 83 08 00 00 0f 84 b5 00 00 00 4c 63 d7 49 c1 e2 04 4d 01 ca 45 8b 19 41 f6 c3 01 0f 85 8d 00 00 00 41 8b 41 04 83 f8 01 75 6f <0f> 01 f9 66 90 48 c1 e2 20 48 09 c2 48 85 d2 78 63 49 8b 49 08 49
RSP: 002b:00007fc305476150 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000002 RSI: 00007fc3054761f0 RDI: 0000000000000001
RBP: 00007fc305476170 R08: 0000000000000000 R09: 00007fff5d8fc080
R10: 00007fff5d8fc090 R11: 000000000005fae8 R12: 00007fc3054761f0
R13: 00007fff5d87120f R14: 00007fc305476300 R15: 0000000000022000
Modules linked in:
CR2: fffffbc0634b1e06
---[ 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:ffff88804026fbf8 EFLAGS: 00010216
RAX: 1fffffc0634b1e06 RBX: fffffe031a58f030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff88804026fcb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff1100804df7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007fc305476700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbc0634b1e06 CR3: 0000000009570000 CR4: 0000000000350ef4
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
audit: type=1326 audit(1668423251.461:10): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7523 comm="syz-executor.4" exe="/syz-executor.4" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7fc307f00b19 code=0x0
audit: type=1326 audit(1668423251.796:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7574 comm="syz-executor.4" exe="/syz-executor.4" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7fc307f00b19 code=0x0
audit: type=1326 audit(1668423252.696:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7615 comm="syz-executor.4" exe="/syz-executor.4" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7fc307f00b19 code=0x0
blktrace: Concurrent blktraces are not allowed on sg0
BUG: unable to handle page fault for address: fffffbc0634b1e06
#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: 7670 Comm: syz-executor.4 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:ffff88803fc9fbf8 EFLAGS: 00010216
RAX: 1fffffc0634b1e06 RBX: fffffe031a58f030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff88803fc9fcb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff11007f93f7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007fc305476700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbc0634b1e06 CR3: 000000001f214000 CR4: 0000000000350ef4
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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: 0033:0x7fff5d900946
Code: 83 08 00 00 0f 84 b5 00 00 00 4c 63 d7 49 c1 e2 04 4d 01 ca 45 8b 19 41 f6 c3 01 0f 85 8d 00 00 00 41 8b 41 04 83 f8 01 75 6f <0f> 01 f9 66 90 48 c1 e2 20 48 09 c2 48 85 d2 78 63 49 8b 49 08 49
RSP: 002b:00007fc305476150 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000002 RSI: 00007fc3054761f0 RDI: 0000000000000001
RBP: 00007fc305476170 R08: 0000000000000000 R09: 00007fff5d8fc080
R10: 00007fff5d8fc090 R11: 00000000000612e2 R12: 00007fc3054761f0
R13: 00007fff5d87120f R14: 00007fc305476300 R15: 0000000000022000
Modules linked in:
CR2: fffffbc0634b1e06
---[ 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:ffff88804026fbf8 EFLAGS: 00010216
RAX: 1fffffc0634b1e06 RBX: fffffe031a58f030 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: ffff88804026fcb8 R08: 0000000000000006 R09: 000000000000007f
R10: 0000000000000030 R11: 0000000000000001 R12: 1ffff1100804df7f
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000007f
FS: 00007fc305476700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbc0634b1e06 CR3: 000000001f214000 CR4: 0000000000350ef4
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
audit: type=1400 audit(1668423256.026:13): avc: denied { watch_reads } for pid=7766 comm="syz-executor.0" path="/dev/bsg" dev="devtmpfs" ino=113 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:device_t:s0 tclass=dir permissive=1
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
----------------
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