===================================================== BUG: KMSAN: uninit-value in bpf_prog_test_run_xdp+0x175d/0x1a40 net/bpf/test_run.c:1279 bpf_prog_test_run_xdp+0x175d/0x1a40 net/bpf/test_run.c:1279 bpf_prog_test_run+0x6b7/0xad0 kernel/bpf/syscall.c:4269 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5678 __do_sys_bpf kernel/bpf/syscall.c:5767 [inline] __se_sys_bpf kernel/bpf/syscall.c:5765 [inline] __ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5765 ia32_sys_call+0xf7e/0x40a0 arch/x86/include/generated/asm/syscalls_32.h:358 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Uninit was stored to memory at: bpf_test_run+0x52e/0xc30 bpf_prog_test_run_xdp+0xeaa/0x1a40 net/bpf/test_run.c:1269 bpf_prog_test_run+0x6b7/0xad0 kernel/bpf/syscall.c:4269 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5678 __do_sys_bpf kernel/bpf/syscall.c:5767 [inline] __se_sys_bpf kernel/bpf/syscall.c:5765 [inline] __ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5765 ia32_sys_call+0xf7e/0x40a0 arch/x86/include/generated/asm/syscalls_32.h:358 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Uninit was stored to memory at: ___bpf_prog_run+0x58c4/0xe0f0 __bpf_prog_run512+0xb5/0xe0 kernel/bpf/core.c:2238 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run_xdp include/net/xdp.h:514 [inline] bpf_test_run+0x43e/0xc30 net/bpf/test_run.c:423 bpf_prog_test_run_xdp+0xeaa/0x1a40 net/bpf/test_run.c:1269 bpf_prog_test_run+0x6b7/0xad0 kernel/bpf/syscall.c:4269 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5678 __do_sys_bpf kernel/bpf/syscall.c:5767 [inline] __se_sys_bpf kernel/bpf/syscall.c:5765 [inline] __ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5765 ia32_sys_call+0xf7e/0x40a0 arch/x86/include/generated/asm/syscalls_32.h:358 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Uninit was stored to memory at: ___bpf_prog_run+0x9098/0xe0f0 __bpf_prog_run512+0xb5/0xe0 kernel/bpf/core.c:2238 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run_xdp include/net/xdp.h:514 [inline] bpf_test_run+0x43e/0xc30 net/bpf/test_run.c:423 bpf_prog_test_run_xdp+0xeaa/0x1a40 net/bpf/test_run.c:1269 bpf_prog_test_run+0x6b7/0xad0 kernel/bpf/syscall.c:4269 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5678 __do_sys_bpf kernel/bpf/syscall.c:5767 [inline] __se_sys_bpf kernel/bpf/syscall.c:5765 [inline] __ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5765 ia32_sys_call+0xf7e/0x40a0 arch/x86/include/generated/asm/syscalls_32.h:358 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Local variable stack created at: __bpf_prog_run512+0x45/0xe0 kernel/bpf/core.c:2238 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run_xdp include/net/xdp.h:514 [inline] bpf_test_run+0x43e/0xc30 net/bpf/test_run.c:423 CPU: 0 PID: 8125 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 =====================================================