------------[ cut here ]------------ verifier bug: REG INVARIANTS VIOLATION (true_reg2): range bounds violation u64=[0x17, 0x10] s64=[0x17, 0x10] u32=[0x17, 0x10] s32=[0x17, 0x10] var_off=(0x10, 0x0) WARNING: kernel/bpf/verifier.c:2769 at reg_bounds_sanity_check+0x201/0xc30 kernel/bpf/verifier.c:2763, CPU#1: syz.4.4836/27373 Modules linked in: CPU: 1 UID: 0 PID: 27373 Comm: syz.4.4836 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:reg_bounds_sanity_check+0x3e6/0xc30 kernel/bpf/verifier.c:2763 Code: 98 00 00 00 4c 8b 8c 24 88 00 00 00 41 ff 34 24 41 57 55 41 55 ff b4 24 f0 00 00 00 ff b4 24 a8 00 00 00 ff b4 24 c0 00 00 00 <67> 48 0f b9 3a 48 83 c4 38 49 bf 00 00 00 00 00 fc ff df 48 8b 84 RSP: 0018:ffffc90005d1eeb0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 1ffff11009542e12 RCX: 0000000000000017 RDX: ffffffff8bd46f60 RSI: ffffffff8bd4f8a0 RDI: ffffffff90158700 RBP: 0000000000000010 R08: 0000000000000010 R09: 0000000000000017 R10: 00000000000000d0 R11: 0000000000000002 R12: ffff88804aa17090 R13: 0000000000000017 R14: 1ffff11009542e11 R15: 0000000000000010 FS: 00007f1ab687d6c0(0000) GS:ffff888125567000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff00f817dac CR3: 0000000076250000 CR4: 00000000003526f0 Call Trace: reg_set_min_max+0x28c/0x340 kernel/bpf/verifier.c:17105 check_cond_jmp_op+0x1db5/0x31a0 kernel/bpf/verifier.c:-1 do_check_insn kernel/bpf/verifier.c:21107 [inline] do_check+0x7970/0x10690 kernel/bpf/verifier.c:21247 do_check_common+0x19c8/0x25b0 kernel/bpf/verifier.c:24589 do_check_main kernel/bpf/verifier.c:24672 [inline] bpf_check+0x5f3e/0x1ce00 kernel/bpf/verifier.c:25996 bpf_prog_load+0x1484/0x1ae0 kernel/bpf/syscall.c:3089 __sys_bpf+0x618/0x950 kernel/bpf/syscall.c:6228 __do_sys_bpf kernel/bpf/syscall.c:6341 [inline] __se_sys_bpf kernel/bpf/syscall.c:6339 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6339 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1ab599c799 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:00007f1ab687d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f1ab5c15fa0 RCX: 00007f1ab599c799 RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005 RBP: 00007f1ab5a32bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1ab5c16038 R14: 00007f1ab5c15fa0 R15: 00007ffc1f2dbb18 ---------------- Code disassembly (best guess): 0: 98 cwtl 1: 00 00 add %al,(%rax) 3: 00 4c 8b 8c add %cl,-0x74(%rbx,%rcx,4) 7: 24 88 and $0x88,%al 9: 00 00 add %al,(%rax) b: 00 41 ff add %al,-0x1(%rcx) e: 34 24 xor $0x24,%al 10: 41 57 push %r15 12: 55 push %rbp 13: 41 55 push %r13 15: ff b4 24 f0 00 00 00 push 0xf0(%rsp) 1c: ff b4 24 a8 00 00 00 push 0xa8(%rsp) 23: ff b4 24 c0 00 00 00 push 0xc0(%rsp) * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 83 c4 38 add $0x38,%rsp 33: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 3a: fc ff df 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 84 .byte 0x84