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:2763 at reg_bounds_sanity_check+0x36a/0x1280 kernel/bpf/verifier.c:2763, CPU#0: syz.2.1379/9577
Modules linked in:
CPU: 0 UID: 0 PID: 9577 Comm: syz.2.1379 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:2763
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:ffffc900266e7280 EFLAGS: 00010283
RAX: 00000000ffffdfcd RBX: ffff888067eb127c RCX: 00000000ffffdfcd
RDX: ffffffff8bb8c3a0 RSI: ffffffff8bb91360 RDI: ffffffff90dd9cf0
RBP: ffffc900266e7370 R08: ffffffffffffdfcc R09: 80000000ffffdfcd
R10: 00000000ffffdfcc R11: 0000000000000000 R12: 00000000ffffdfcd
R13: ffffffffffffdfcc R14: ffff888067eb1230 R15: ffff888067eb1284
FS:  0000000000000000(0000) GS:ffff88809714e000(0063) knlGS:00000000f547db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f547cff4 CR3: 0000000078f7e000 CR4: 0000000000352ef0
DR0: 0000000000000006 DR1: ffffffffffffff00 DR2: 0000000000000020
DR3: 0000000000000005 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reg_set_min_max kernel/bpf/verifier.c:17104 [inline]
 reg_set_min_max+0x199/0x2d0 kernel/bpf/verifier.c:17071
 check_cond_jmp_op+0x2b94/0x6860 kernel/bpf/verifier.c:17548
 do_check_insn kernel/bpf/verifier.c:21107 [inline]
 do_check kernel/bpf/verifier.c:21247 [inline]
 do_check_common+0x99b7/0xcb00 kernel/bpf/verifier.c:24589
 do_check_main kernel/bpf/verifier.c:24672 [inline]
 bpf_check+0xc88e/0xcbd0 kernel/bpf/verifier.c:25996
 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]
 __ia32_sys_bpf+0x79/0xf0 kernel/bpf/syscall.c:6339
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe3/0x8c0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf708ef6c
Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 58 b8 77 00 00 00 cd 80 0f 0b 8d b6 00 00 00 00 b8 ad
RSP: 002b:00000000f547d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000800054c0
RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </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