device lo left promiscuous mode
device lo entered promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device lo left promiscuous mode
general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 0 PID: 8159 Comm: syz-executor.7 Not tainted 5.10.109 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:get_kprobe+0x82/0xc0 kernel/kprobes.c:372
Code: f3 ff ff 4c 89 e0 48 c1 e8 03 80 3c 18 00 75 3b 4d 8b 24 24 4d 85 e4 74 1e e8 ba f3 ff ff 49 8d 7c 24 28 48 89 f8 48 c1 e8 03 <80> 3c 18 00 75 14 49 39 6c 24 28 75 c7 e8 9c f3 ff ff 4c 89 e0 5b
RSP: 0018:ffff888041787950 EFLAGS: 00010217
RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffffc90003a06000
RDX: 0000000000040000 RSI: ffffffff813fbb56 RDI: 000000000000002c
RBP: ffffffff8100002b R08: ffffffff81fac090 R09: ffff888041787a68
R10: 0000000000000005 R11: 0000000000000001 R12: 0000000000000004
R13: dffffc0000000000 R14: ffffffff8100002d R15: ffff888041787af8
FS:  00007f9e99320700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e9bebe018 CR3: 000000003eb3c000 CR4: 0000000000350ef0
Call Trace:
 __recover_optprobed_insn+0x31/0x220 arch/x86/kernel/kprobes/opt.c:44
 recover_probed_instruction+0x1c/0xf0 arch/x86/kernel/kprobes/core.c:275
 can_optimize+0x231/0x400 arch/x86/kernel/kprobes/opt.c:321
 arch_prepare_optimized_kprobe+0x3e/0x5f0 arch/x86/kernel/kprobes/opt.c:406
 __prepare_optimized_kprobe kernel/kprobes.c:805 [inline]
 alloc_aggr_kprobe+0x140/0x190 kernel/kprobes.c:828
 try_to_optimize_kprobe kernel/kprobes.c:853 [inline]
 register_kprobe kernel/kprobes.c:1740 [inline]
 register_kprobe+0xb78/0x1330 kernel/kprobes.c:1682
 __register_trace_kprobe kernel/trace/trace_kprobe.c:514 [inline]
 __register_trace_kprobe+0x262/0x2d0 kernel/trace/trace_kprobe.c:482
 create_local_trace_kprobe+0x1e6/0x3b0 kernel/trace/trace_kprobe.c:1840
 perf_kprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:272
 perf_kprobe_event_init+0xf8/0x1c0 kernel/events/core.c:9663
 perf_try_init_event+0x130/0x570 kernel/events/core.c:11041
 perf_init_event kernel/events/core.c:11093 [inline]
 perf_event_alloc.part.0+0xd96/0x2b30 kernel/events/core.c:11371
 perf_event_alloc kernel/events/core.c:11750 [inline]
 __do_sys_perf_event_open+0x57c/0x2d00 kernel/events/core.c:11848
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f9e9bdaab19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9e99320188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f9e9bebdf60 RCX: 00007f9e9bdaab19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020001d80
RBP: 00007f9e9be04f6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdc493267f R14: 00007f9e99320300 R15: 0000000000022000
Modules linked in:
---[ end trace 9f17c39f2007a308 ]---
RIP: 0010:get_kprobe+0x82/0xc0 kernel/kprobes.c:372
Code: f3 ff ff 4c 89 e0 48 c1 e8 03 80 3c 18 00 75 3b 4d 8b 24 24 4d 85 e4 74 1e e8 ba f3 ff ff 49 8d 7c 24 28 48 89 f8 48 c1 e8 03 <80> 3c 18 00 75 14 49 39 6c 24 28 75 c7 e8 9c f3 ff ff 4c 89 e0 5b
RSP: 0018:ffff888041787950 EFLAGS: 00010217
RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffffc90003a06000
RDX: 0000000000040000 RSI: ffffffff813fbb56 RDI: 000000000000002c
RBP: ffffffff8100002b R08: ffffffff81fac090 R09: ffff888041787a68
R10: 0000000000000005 R11: 0000000000000001 R12: 0000000000000004
R13: dffffc0000000000 R14: ffffffff8100002d R15: ffff888041787af8
FS:  00007f9e99320700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e9bebe018 CR3: 000000003eb3c000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	f3 ff                	repz (bad)
   2:	ff 4c 89 e0          	decl   -0x20(%rcx,%rcx,4)
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
   e:	75 3b                	jne    0x4b
  10:	4d 8b 24 24          	mov    (%r12),%r12
  14:	4d 85 e4             	test   %r12,%r12
  17:	74 1e                	je     0x37
  19:	e8 ba f3 ff ff       	callq  0xfffff3d8
  1e:	49 8d 7c 24 28       	lea    0x28(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	75 14                	jne    0x44
  30:	49 39 6c 24 28       	cmp    %rbp,0x28(%r12)
  35:	75 c7                	jne    0xfffffffe
  37:	e8 9c f3 ff ff       	callq  0xfffff3d8
  3c:	4c 89 e0             	mov    %r12,%rax
  3f:	5b                   	pop    %rbx