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Add a small test to pass an uninitialized mtu_len to the bpf_check_mtu() helper to probe whether the verifier rejects it under !CAP_PERFMON. # ./vmtest.sh -- ./test_progs -t verifier_mtu [...] ./test_progs -t verifier_mtu [ 1.414712] tsc: Refined TSC clocksource calibration: 3407.993 MHz [ 1.415327] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcd52370, max_idle_ns: 440795242006 ns [ 1.416463] clocksource: Switched to clocksource tsc [ 1.429842] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430283] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel #510/1 verifier_mtu/uninit/mtu: write rejected:OK #510 verifier_mtu:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20241021152809.33343-5-daniel@iogearbox.net Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
| debugging | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pci | ||
| pcmcia | ||
| perf | ||
| power | ||
| rcu | ||
| sched_ext | ||
| scripts | ||
| sound | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| tracing | ||
| usb | ||
| verification | ||
| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||