------------[ cut here ]------------
verifier backtracking bug
WARNING: CPU: 1 PID: 9314 at kernel/bpf/verifier.c:1755 mark_chain_precision+0x15c2/0x18e0 kernel/bpf/verifier.c:1755
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 9314 Comm: syz-executor088 Not tainted 5.2.0-rc7-next-20190703 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:mark_chain_precision+0x15c2/0x18e0 kernel/bpf/verifier.c:1755
Code: e9 55 f2 ff ff 48 89 df e8 5b c9 2c 00 e9 3a f3 ff ff e8 21 a7 f2 ff 48 c7 c7 60 9d 91 87 c6 05 1e f8 1f 08 01 e8 96 1f c4 ff <0f> 0b 41 be f2 ff ff ff e9 eb f7 ff ff e8 fc a6 f2 ff 45 31 f6 e9
RSP: 0018:ffff88809153f378 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c0c96 RDI: ffffed10122a7e61
RBP: ffff88809153f4d0 R08: ffff888097d5c100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808bd780c0 R14: 0000000000000001 R15: dffffc0000000000
 check_cond_jmp_op+0xcce/0x3c20 kernel/bpf/verifier.c:5797
 do_check+0x6187/0x8990 kernel/bpf/verifier.c:7689
 bpf_check+0x6f99/0x9948 kernel/bpf/verifier.c:9200
 bpf_prog_load+0xe68/0x1670 kernel/bpf/syscall.c:1698
 __do_sys_bpf+0xa46/0x42f0 kernel/bpf/syscall.c:2849
 __se_sys_bpf kernel/bpf/syscall.c:2808 [inline]
 __x64_sys_bpf+0x73/0xb0 kernel/bpf/syscall.c:2808
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440369
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd97e06b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440369
RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401bf0
R13: 0000000000401c80 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..