verifier bug: REG INVARIANTS VIOLATION (false_reg1): range bounds violation u64=[0xfffffffefffff630, 0xffffffff00000000] s64=[0xfffffffefffff630, 0xffffffff00000000] u32=[0x30, 0x8000050] s32=[0x30, 0x0] var_off=(0xfffffffe00000030, 0x10fffffc0)(1) WARNING: CPU: 0 PID: 3515 at kernel/bpf/verifier.c:2722 reg_bounds_sanity_check+0x164/0x210 kernel/bpf/verifier.c:2722 Modules linked in: CPU: 0 UID: 0 PID: 3515 Comm: syz.0.23 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 61402009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : reg_bounds_sanity_check+0x164/0x210 kernel/bpf/verifier.c:2722 lr : reg_bounds_sanity_check+0x164/0x210 kernel/bpf/verifier.c:2722 sp : ffff8000892db7f0 x29: ffff8000892db820 x28: 0000000000000006 x27: 0000000000000020 x26: f0f000000aaa6800 x25: 0000000000000001 x24: f0f000000abd8000 x23: ffff800082429828 x22: ffff8000824297b0 x21: ffff80008242b9d0 x20: f0f000000abd8000 x19: f0f000000aaa6968 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 00000000000002e1 x13: 0000000000000000 x12: ffff800082911258 x11: 00000000000000c0 x10: ba7405347b092f00 x9 : a6c19cb765859ff3 x8 : f3f000000a1b36f8 x7 : 0000000000000004 x6 : 0000001ab0adb275 x5 : 0000000000000002 x4 : fbffff3fffffffff x3 : 000000000000ffff x2 : 0000000000000000 x1 : 0000000000000000 x0 : f3f000000a1b2500 Call trace: reg_bounds_sanity_check+0x164/0x210 kernel/bpf/verifier.c:2722 (P) reg_set_min_max kernel/bpf/verifier.c:16336 [inline] reg_set_min_max+0x1b4/0x1f4 kernel/bpf/verifier.c:16308 check_cond_jmp_op+0x8d0/0x12cc kernel/bpf/verifier.c:16768 do_check_insn kernel/bpf/verifier.c:19956 [inline] do_check kernel/bpf/verifier.c:20093 [inline] do_check_common+0x2364/0x29e8 kernel/bpf/verifier.c:23260 do_check_main kernel/bpf/verifier.c:23343 [inline] bpf_check+0x2280/0x2aac kernel/bpf/verifier.c:24703 bpf_prog_load+0x634/0xb74 kernel/bpf/syscall.c:2979 __sys_bpf+0x2e0/0x1a3c kernel/bpf/syscall.c:6029 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline] __se_sys_bpf kernel/bpf/syscall.c:6137 [inline] __arm64_sys_bpf+0x24/0x34 kernel/bpf/syscall.c:6137 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0x10c arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596 ---[ end trace 0000000000000000 ]---