------------[ cut here ]------------ verifier backtracking bug WARNING: CPU: 0 PID: 4706 at kernel/bpf/verifier.c:1783 __mark_chain_precision+0x21e7/0x2320 kernel/bpf/verifier.c:1783 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 4706 Comm: syz-executor.2 Not tainted 5.3.0-rc7+ #0 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+0x1d8/0x2f8 lib/dump_stack.c:113 panic+0x25c/0x799 kernel/panic.c:219 __warn+0x22f/0x230 kernel/panic.c:576 report_bug+0x190/0x290 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0xd7/0x440 arch/x86/kernel/traps.c:272 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:__mark_chain_precision+0x21e7/0x2320 kernel/bpf/verifier.c:1783 Code: 0f 8c 83 df ff ff e8 68 89 28 00 e9 79 df ff ff e8 4e 8e ef ff c6 05 be bc 36 07 01 48 c7 c7 48 cd 3d 88 31 c0 e8 39 70 c2 ff <0f> 0b e9 82 e1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 9f df ff RSP: 0018:ffff88804165f590 EFLAGS: 00010246 RAX: 4a3ad0fe26a52400 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc900131f6000 RSI: 0000000000006f13 RDI: 0000000000006f14 RBP: ffff88804165f6b0 R08: ffffffff81790e54 R09: fffffbfff111a93f R10: fffffbfff111a93f R11: 0000000000000000 R12: 0000000000000001 R13: ffff88805ac42890 R14: 0000000000000000 R15: 0000000000000000 mark_chain_precision kernel/bpf/verifier.c:1820 [inline] check_cond_jmp_op kernel/bpf/verifier.c:5840 [inline] do_check+0x8781/0x23c90 kernel/bpf/verifier.c:7782 bpf_check+0x3f5a/0xe730 kernel/bpf/verifier.c:9293 bpf_prog_load kernel/bpf/syscall.c:1698 [inline] __do_sys_bpf+0x7a38/0xbed0 kernel/bpf/syscall.c:2855 __se_sys_bpf kernel/bpf/syscall.c:2814 [inline] __x64_sys_bpf+0x7a/0x90 kernel/bpf/syscall.c:2814 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1973416c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19734176d4 R13: 00000000004bfd15 R14: 00000000004d1a58 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..