------------[ cut here ]------------ backtracing misuse WARNING: CPU: 1 PID: 8596 at kernel/bpf/verifier.c:4381 __mark_chain_precision+0x59c2/0x60f0 kernel/bpf/verifier.c:4381 Modules linked in: CPU: 1 PID: 8596 Comm: syz.2.764 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:__mark_chain_precision+0x59c2/0x60f0 kernel/bpf/verifier.c:4381 Code: 8c 07 ff ff ff 4c 89 ff e8 bb fb 47 00 e9 fa fe ff ff e8 51 6f ef ff c6 05 1a 96 de 0c 01 48 c7 c7 c0 a6 d0 8a e8 3e 33 b9 ff <0f> 0b b8 f2 ff ff ff e9 25 f4 ff ff e8 2d 6f ef ff e9 19 f4 ff ff RSP: 0018:ffffc900035ced00 EFLAGS: 00010246 RAX: 1a5d2c45ab34f700 RBX: 0000000000000006 RCX: 0000000000080000 RDX: ffffc9000ce32000 RSI: 00000000000058d0 RDI: 00000000000058d1 RBP: ffffc900035ceef0 R08: ffff8880b8f28c53 R09: 1ffff110171e518a R10: dffffc0000000000 R11: ffffed10171e518b R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88802f791b50 R15: 0000000000000001 FS: 00007f767b8506c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3204c4 CR3: 000000007673f000 CR4: 00000000003506e0 Call Trace: mark_chain_precision kernel/bpf/verifier.c:4536 [inline] check_helper_call+0x42d3/0x6340 kernel/bpf/verifier.c:10235 do_check+0x87fb/0xd0a0 kernel/bpf/verifier.c:17478 do_check_common+0xacc/0x1410 kernel/bpf/verifier.c:19903 do_check_main kernel/bpf/verifier.c:19966 [inline] bpf_check+0x65df/0xec40 kernel/bpf/verifier.c:20646 bpf_prog_load+0x10fa/0x1610 kernel/bpf/syscall.c:2753 __sys_bpf+0x5ba/0x890 kernel/bpf/syscall.c:5491 __do_sys_bpf kernel/bpf/syscall.c:5595 [inline] __se_sys_bpf kernel/bpf/syscall.c:5593 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5593 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f767a99e159 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:00007f767b850028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f767ac25fa0 RCX: 00007f767a99e159 RDX: 0000000000000080 RSI: 0000200000000300 RDI: 0000000000000005 RBP: 00007f767aa3506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f767ac26038 R14: 00007f767ac25fa0 R15: 00007ffd372b9698