verifier bug: REG INVARIANTS VIOLATION (true_reg1): range bounds violation u64=[0xffffdfcd, 0xffffffffffffdfcc] s64=[0x80000000ffffdfcd, 0x7fffffffffffdfcc] u32=[0xffffdfcd, 0xffffdfcc] s32=[0xffffdfcd, 0xffffdfcc] var_off=(0xffffdfcc, 0xffffffff00000000)
WARNING: kernel/bpf/verifier.c:2817 at reg_bounds_sanity_check+0x36a/0x1280 kernel/bpf/verifier.c:2817, CPU#1: syz.1.7/6032
Modules linked in:
CPU: 1 UID: 0 PID: 6032 Comm: syz.1.7 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:reg_bounds_sanity_check+0x3aa/0x1280 kernel/bpf/verifier.c:2817
Code: ff ff 50 8b 85 6c ff ff ff 50 8b 85 78 ff ff ff 50 8b 85 7c ff ff ff 50 ff 75 b8 4c 8b 4d c0 48 8b 95 70 ff ff ff 48 8b 75 80 <67> 48 0f b9 3a 48 8b 95 48 ff ff ff 48 83 c4 38 48 b8 00 00 00 00
RSP: 0018:ffffc90003c5f280 EFLAGS: 00010283
RAX: 00000000ffffdfcd RBX: ffff8880592e627c RCX: 00000000ffffdfcd
RDX: ffffffff8bb8d020 RSI: ffffffff8bb91fe0 RDI: ffffffff90ddc100
RBP: ffffc90003c5f370 R08: ffffffffffffdfcc R09: 80000000ffffdfcd
R10: 00000000ffffdfcc R11: 0000000000000000 R12: 00000000ffffdfcd
R13: ffffffffffffdfcc R14: ffff8880592e6230 R15: ffff8880592e6284
FS:  00007f43d90466c0(0000) GS:ffff8880d643c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c27a462 CR3: 0000000057fbd000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 reg_set_min_max kernel/bpf/verifier.c:17165 [inline]
 reg_set_min_max+0x199/0x2d0 kernel/bpf/verifier.c:17132
 check_cond_jmp_op+0x2be6/0x68c0 kernel/bpf/verifier.c:17622
 do_check_insn kernel/bpf/verifier.c:21185 [inline]
 do_check kernel/bpf/verifier.c:21325 [inline]
 do_check_common+0x99b7/0xcb00 kernel/bpf/verifier.c:24667
 do_check_main kernel/bpf/verifier.c:24750 [inline]
 bpf_check+0xbd53/0xcd50 kernel/bpf/verifier.c:26073
 bpf_prog_load+0x1c86/0x2c20 kernel/bpf/syscall.c:3089
 __sys_bpf+0x223a/0x4b90 kernel/bpf/syscall.c:6228
 __do_sys_bpf kernel/bpf/syscall.c:6341 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6339 [inline]
 __x64_sys_bpf+0x7b/0xc0 kernel/bpf/syscall.c:6339
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43d819c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43d9046028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f43d8415fa0 RCX: 00007f43d819c819
RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005
RBP: 00007f43d8232c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f43d8416038 R14: 00007f43d8415fa0 R15: 00007ffd03cada38
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	50                   	push   %rax
   1:	8b 85 6c ff ff ff    	mov    -0x94(%rbp),%eax
   7:	50                   	push   %rax
   8:	8b 85 78 ff ff ff    	mov    -0x88(%rbp),%eax
   e:	50                   	push   %rax
   f:	8b 85 7c ff ff ff    	mov    -0x84(%rbp),%eax
  15:	50                   	push   %rax
  16:	ff 75 b8             	push   -0x48(%rbp)
  19:	4c 8b 4d c0          	mov    -0x40(%rbp),%r9
  1d:	48 8b 95 70 ff ff ff 	mov    -0x90(%rbp),%rdx
  24:	48 8b 75 80          	mov    -0x80(%rbp),%rsi
* 28:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2d:	48 8b 95 48 ff ff ff 	mov    -0xb8(%rbp),%rdx
  34:	48 83 c4 38          	add    $0x38,%rsp
  38:	48                   	rex.W
  39:	b8 00 00 00 00       	mov    $0x0,%eax