mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Mykyta YatsenkoandKumar Kartikeya Dwivedi
8a20655749
Cover all three sleepable tracepoint types (tp_btf.s, raw_tp.s, tp.s) and sys_exit (via bpf_task_pt_regs) with functional tests using bpf_copy_from_user() on getcwd. Verify alias and bare SEC variants, bpf_prog_test_run_raw_tp() with BPF_F_TEST_RUN_ON_CPU rejection, attach-time rejection on non-faultable tracepoints, and load-time rejection for sleepable tp_btf on non-faultable tracepoints. Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/bpf/20260422-sleepable_tracepoints-v13-6-99005dff21ef@meta.com Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
105 lines
2.1 KiB
C
105 lines
2.1 KiB
C
{
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"sleepable fentry accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACING,
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.expected_attach_type = BPF_TRACE_FENTRY,
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.kfunc = "bpf_fentry_test1",
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable fexit accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACING,
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.expected_attach_type = BPF_TRACE_FENTRY,
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.kfunc = "bpf_fentry_test1",
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable fmod_ret accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACING,
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.expected_attach_type = BPF_MODIFY_RETURN,
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.kfunc = "bpf_fentry_test1",
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable iter accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACING,
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.expected_attach_type = BPF_TRACE_ITER,
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.kfunc = "task",
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable lsm accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_LSM,
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.kfunc = "bpf",
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.expected_attach_type = BPF_LSM_MAC,
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable uprobe accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_KPROBE,
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.kfunc = "bpf_fentry_test1",
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable raw tracepoint accept",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACING,
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.expected_attach_type = BPF_TRACE_RAW_TP,
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.kfunc = "sys_enter",
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.result = ACCEPT,
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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{
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"sleepable raw tracepoint reject non-faultable",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACING,
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.expected_attach_type = BPF_TRACE_RAW_TP,
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.kfunc = "sched_switch",
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.result = REJECT,
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.errstr = "Sleepable program cannot attach to non-faultable tracepoint",
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.flags = BPF_F_SLEEPABLE,
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.runs = -1,
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},
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