syzbot

BUG: unable to handle page fault for address: ffffffffff600000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 6c12067 P4D 6c12067 PUD 6c14067 PMD 6c16067 
PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 296 Comm: syz-executor603 Not tainted 6.1.68-syzkaller-00046-g30edcedb44a8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36
Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 fb 46 d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc90000e27890 EFLAGS: 00010257
RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff888121a46540
RDX: ffff888121a470e0 RSI: 0000000000000008 RDI: 0000000000000007
RBP: ffffc90000e278c8 R08: ffffffff81a31b85 R09: ffffffff818e9ebc
R10: 0000000000000005 R11: ffff888121a46540 R12: ffffffffff600000
R13: 0000000000000000 R14: ffffc90000e27908 R15: ffffc90000e27910
FS:  00005555559ce380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000011ba90000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bpf_probe_read_kernel_common kernel/trace/bpf_trace.c:230 [inline]
 ____bpf_probe_read_kernel kernel/trace/bpf_trace.c:239 [inline]
 bpf_probe_read_kernel+0x2a/0x70 kernel/trace/bpf_trace.c:236
 bpf_prog_3aa1bfad0585af26+0x5b/0x5d
 bpf_dispatcher_nop_func include/linux/bpf.h:982 [inline]
 __bpf_prog_run include/linux/filter.h:600 [inline]
 bpf_prog_run include/linux/filter.h:607 [inline]
 bpf_test_run+0x4ab/0xa40 net/bpf/test_run.c:402
 bpf_prog_test_run_skb+0xaf1/0x13a0 net/bpf/test_run.c:1180
 bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3635
 __sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:4990
 __do_sys_bpf kernel/bpf/syscall.c:5076 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5074 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5074
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa983308769
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc7da1f6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ffc7da1f8c8 RCX: 00007fa983308769
RDX: 000000000000004c RSI: 0000000020000240 RDI: 000000000000000a
RBP: 00007fa98337b610 R08: 0000000000000000 R09: 00007ffc7da1f8c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc7da1f8b8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
CR2: ffffffffff600000
---[ end trace 0000000000000000 ]---
RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36
Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 fb 46 d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc90000e27890 EFLAGS: 00010257
RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff888121a46540
RDX: ffff888121a470e0 RSI: 0000000000000008 RDI: 0000000000000007
RBP: ffffc90000e278c8 R08: ffffffff81a31b85 R09: ffffffff818e9ebc
R10: 0000000000000005 R11: ffff888121a46540 R12: ffffffffff600000
R13: 0000000000000000 R14: ffffc90000e27908 R15: ffffc90000e27910
FS:  00005555559ce380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000011ba90000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 55 d0          	mov    %rdx,-0x30(%rbp)
   4:	0f 85 de 01 00 00    	jne    0x1e8
   a:	ff 02                	incl   (%rdx)
   c:	bf 07 00 00 00       	mov    $0x7,%edi
  11:	4c 89 ee             	mov    %r13,%rsi
  14:	e8 fb 46 d2 ff       	call   0xffd24714
  19:	49 83 fd 07          	cmp    $0x7,%r13
  1d:	76 58                	jbe    0x77
  1f:	4d 89 fe             	mov    %r15,%r14
  22:	49 83 c7 08          	add    $0x8,%r15
  26:	49 83 c5 f8          	add    $0xfffffffffffffff8,%r13
* 2a:	49 8b 1c 24          	mov    (%r12),%rbx <-- trapping instruction
  2e:	4c 89 f0             	mov    %r14,%rax
  31:	48 c1 e8 03          	shr    $0x3,%rax
  35:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  3c:	fc ff df
  3f:	80                   	.byte 0x80