------------[ cut here ]------------ verifier backtracking bug (stack slot out of bounds) WARNING: CPU: 0 PID: 15772 at kernel/bpf/verifier.c:4278 __mark_chain_precision+0x2a84/0x4d60 kernel/bpf/verifier.c:4278 Modules linked in: CPU: 0 PID: 15772 Comm: syz-executor.2 Not tainted 6.7.0-rc3-syzkaller-00764-g32fa05839862 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:__mark_chain_precision+0x2a84/0x4d60 kernel/bpf/verifier.c:4278 Code: ff 89 de e8 8e de ec ff 84 db 0f 85 2c e1 ff ff e8 51 e3 ec ff c6 05 8f 73 68 0d 01 90 48 c7 c7 80 47 d4 8a e8 5d 01 b3 ff 90 <0f> 0b 90 90 e9 09 e1 ff ff e8 2e e3 ec ff 48 8d 7b 04 48 b8 00 00 RSP: 0018:ffffc9000e2f72e8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000563a000 RDX: 0000000000040000 RSI: ffffffff814db5c6 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88803164d000 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007f39261ab6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe912d76198 CR3: 000000002093c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_chain_precision kernel/bpf/verifier.c:4326 [inline] check_cond_jmp_op+0xea0/0x72b0 kernel/bpf/verifier.c:14712 do_check kernel/bpf/verifier.c:17504 [inline] do_check_common+0x8cbe/0xe8e0 kernel/bpf/verifier.c:19943 do_check_main kernel/bpf/verifier.c:20034 [inline] bpf_check+0x511a/0xa600 kernel/bpf/verifier.c:20670 bpf_prog_load+0xf3d/0x2540 kernel/bpf/syscall.c:2808 __sys_bpf+0x9ad/0x4af0 kernel/bpf/syscall.c:5513 __do_sys_bpf kernel/bpf/syscall.c:5620 [inline] __se_sys_bpf kernel/bpf/syscall.c:5618 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5618 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f392547cba9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f39261ab0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f392559bf80 RCX: 00007f392547cba9 RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00007f39254c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f392559bf80 R15: 00007ffc587c0418