------------[ cut here ]------------ verifier bug: REG INVARIANTS VIOLATION (false_reg1): range bounds violation u64=[0x4000000, 0x0] s64=[0x4000000, 0x0] u32=[0x4000000, 0x0] s32=[0x4000000, 0x0] var_off=(0x0, 0x0) WARNING: CPU: 0 PID: 19545 at kernel/bpf/verifier.c:2715 reg_bounds_sanity_check+0x62b/0x1200 kernel/bpf/verifier.c:2715 Modules linked in: CPU: 0 UID: 0 PID: 19545 Comm: syz.6.2486 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:reg_bounds_sanity_check+0x62b/0x1200 kernel/bpf/verifier.c:2715 Code: 45 ac 50 8b 45 b0 50 8b 45 b4 50 ff 75 b8 4c 8b 4d c0 4c 8b 45 c8 48 8b 95 58 ff ff ff 48 8b b5 60 ff ff ff e8 46 aa aa ff 90 <0f> 0b 90 90 48 8b 95 40 ff ff ff 48 83 c4 38 48 b8 00 00 00 00 00 RSP: 0018:ffffc9000aebf270 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000004000000 RCX: ffffc9001846b000 RDX: 0000000000080000 RSI: ffffffff817b7ef5 RDI: 0000000000000001 RBP: ffffc9000aebf368 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880308e0000 R13: ffff88807938d2f4 R14: ffff88807938d2ec R15: ffff88807938d2a0 FS: 00007ff23182b6c0(0000) GS:ffff8881249db000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2cadc1f000 CR3: 00000000592ad000 CR4: 0000000000350ef0 Call Trace: reg_set_min_max kernel/bpf/verifier.c:16409 [inline] reg_set_min_max+0x1dc/0x2c0 kernel/bpf/verifier.c:16381 check_cond_jmp_op+0xc9f/0x7490 kernel/bpf/verifier.c:16852 do_check_insn kernel/bpf/verifier.c:19929 [inline] do_check kernel/bpf/verifier.c:20069 [inline] do_check_common+0xa20a/0xb550 kernel/bpf/verifier.c:23259 do_check_main kernel/bpf/verifier.c:23342 [inline] bpf_check+0x8805/0xbdd0 kernel/bpf/verifier.c:24647 bpf_prog_load+0x112e/0x2850 kernel/bpf/syscall.c:3077 __sys_bpf+0x3e72/0x4980 kernel/bpf/syscall.c:6149 __do_sys_bpf kernel/bpf/syscall.c:6259 [inline] __se_sys_bpf kernel/bpf/syscall.c:6257 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:6257 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff23098efc9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff23182b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff230be6090 RCX: 00007ff23098efc9 RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005 RBP: 00007ff230a11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff230be6128 R14: 00007ff230be6090 R15: 00007ffcf716d6b8