On Wed, Aug 20, 2025 at 8:16 AM Vincent Li <vincent.mc.li@xxxxxxxxx> wrote:
>
> On Wed, Aug 20, 2025 at 8:15 AM Vincent Li <vincent.mc.li@xxxxxxxxx> wrote:
> >
> > On Wed, Aug 20, 2025 at 5:06 AM Hengqi Chen <hengqi.chen@xxxxxxxxx> wrote:
> > >
> > > The ns_bpf_qdisc selftest triggers a kernel panic:
> > >
> > > [ 2738.595309] CPU 0 Unable to handle kernel paging request at virtual address 0000000000741d58, era == 90000000851b5ac0, ra == 90000000851b5aa4
> > > [ 2738.596716] Oops[#1]:
> > > [ 2738.596980] CPU: 0 UID: 0 PID: 449 Comm: test_progs Tainted: G OE 6.16.0+ #3 PREEMPT(full)
> > > [ 2738.597184] Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
> > > [ 2738.597265] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022
> > > [ 2738.597386] pc 90000000851b5ac0 ra 90000000851b5aa4 tp 90000001076b8000 sp 90000001076bb600
> > > [ 2738.597484] a0 0000000000741ce8 a1 0000000000000001 a2 90000001076bb5c0 a3 0000000000000008
> > > [ 2738.597577] a4 90000001004c4620 a5 9000000100741ce8 a6 0000000000000000 a7 0100000000000000
> > > [ 2738.597682] t0 0000000000000010 t1 0000000000000000 t2 9000000104d24d30 t3 0000000000000001
> > > [ 2738.597835] t4 4f2317da8a7e08c4 t5 fffffefffc002f00 t6 90000001004c4620 t7 ffffffffc61c5b3d
> > > [ 2738.597997] t8 0000000000000000 u0 0000000000000001 s9 0000000000000050 s0 90000001075bc800
> > > [ 2738.598097] s1 0000000000000040 s2 900000010597c400 s3 0000000000000008 s4 90000001075bc880
> > > [ 2738.598196] s5 90000001075bc8f0 s6 0000000000000000 s7 0000000000741ce8 s8 0000000000000000
> > > [ 2738.598313] ra: 90000000851b5aa4 __qdisc_run+0xac/0x8d8
> > > [ 2738.598553] ERA: 90000000851b5ac0 __qdisc_run+0xc8/0x8d8
> > > [ 2738.598629] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
> > > [ 2738.598991] PRMD: 00000004 (PPLV0 +PIE -PWE)
> > > [ 2738.599065] EUEN: 00000007 (+FPE +SXE +ASXE -BTE)
> > > [ 2738.599160] ECFG: 00071c1d (LIE=0,2-4,10-12 VS=7)
> > > [ 2738.599278] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)
> > > [ 2738.599364] BADV: 0000000000741d58
> > > [ 2738.599429] PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
> > > [ 2738.599513] Modules linked in: bpf_testmod(OE) [last unloaded: bpf_testmod(OE)]
> > > [ 2738.599724] Process test_progs (pid: 449, threadinfo=000000009af02b3a, task=00000000e9ba4956)
> > > [ 2738.599916] Stack : 0000000000000000 90000001075bc8ac 90000000869524a8 9000000100741ce8
> > > [ 2738.600065] 90000001075bc800 9000000100415300 90000001075bc8ac 0000000000000000
> > > [ 2738.600170] 900000010597c400 900000008694a000 0000000000000000 9000000105b59000
> > > [ 2738.600278] 90000001075bc800 9000000100741ce8 0000000000000050 900000008513000c
> > > [ 2738.600381] 9000000086936000 0000000100094d4c fffffff400676208 0000000000000000
> > > [ 2738.600482] 9000000105b59000 900000008694a000 9000000086bf0dc0 9000000105b59000
> > > [ 2738.600585] 9000000086bf0d68 9000000085147010 90000001075be788 0000000000000000
> > > [ 2738.600690] 9000000086bf0f98 0000000000000001 0000000000000010 9000000006015840
> > > [ 2738.600795] 0000000000000000 9000000086be6c40 0000000000000000 0000000000000000
> > > [ 2738.600901] 0000000000000000 4f2317da8a7e08c4 0000000000000101 4f2317da8a7e08c4
> > > [ 2738.601007] ...
> > > [ 2738.601062] Call Trace:
> > > [ 2738.601135] [<90000000851b5ac0>] __qdisc_run+0xc8/0x8d8
> > > [ 2738.601396] [<9000000085130008>] __dev_queue_xmit+0x578/0x10f0
> > > [ 2738.601482] [<90000000853701c0>] ip6_finish_output2+0x2f0/0x950
> > > [ 2738.601568] [<9000000085374bc8>] ip6_finish_output+0x2b8/0x448
> > > [ 2738.601646] [<9000000085370b24>] ip6_xmit+0x304/0x858
> > > [ 2738.601711] [<90000000853c4438>] inet6_csk_xmit+0x100/0x170
> > > [ 2738.601784] [<90000000852b32f0>] __tcp_transmit_skb+0x490/0xdd0
> > > [ 2738.601863] [<90000000852b47fc>] tcp_connect+0xbcc/0x1168
> > > [ 2738.601934] [<90000000853b9088>] tcp_v6_connect+0x580/0x8a0
> > > [ 2738.602019] [<90000000852e7738>] __inet_stream_connect+0x170/0x480
> > > [ 2738.602103] [<90000000852e7a98>] inet_stream_connect+0x50/0x88
> > > [ 2738.602175] [<90000000850f2814>] __sys_connect+0xe4/0x110
> > > [ 2738.602244] [<90000000850f2858>] sys_connect+0x18/0x28
> > > [ 2738.602320] [<9000000085520c94>] do_syscall+0x94/0x1a0
> > > [ 2738.602399] [<9000000083df1fb8>] handle_syscall+0xb8/0x158
> > > [ 2738.602502]
> > > [ 2738.602546] Code: 4001ad80 2400873f 2400832d <240073cc> 001137ff 001133ff 6407b41f 001503cc 0280041d
> > > [ 2738.602724]
> > > [ 2738.602916] ---[ end trace 0000000000000000 ]---
> > > [ 2738.603210] Kernel panic - not syncing: Fatal exception in interrupt
> > > [ 2738.603548] Kernel relocated by 0x83bb0000
> > > [ 2738.603622] .text @ 0x9000000083db0000
> > > [ 2738.603699] .data @ 0x9000000085690000
> > > [ 2738.603753] .bss @ 0x9000000087491e00
> > > [ 2738.603900] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
> > >
> > > The bpf_fifo_dequeue prog returns a skb which is a pointer.
> > > The pointer is treated as a 32bit value and sign extend to
> > > 64bit in epilogue. This behavior is right for most bpf prog
> > > types but wrong for struct ops which requires LoongArch ABI.
> > >
> > > So let's sign extend struct ops return values according to
> > > the return value spec in function model.
> > >
> > > Fixes: 6abf17d690d8 ("LoongArch: BPF: Add struct ops support for trampoline")
> > > Signed-off-by: Hengqi Chen <hengqi.chen@xxxxxxxxx>
> > > ---
> > > arch/loongarch/net/bpf_jit.c | 47 ++++++++++++++++++++++++++++++------
> > > 1 file changed, 40 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
> > > index abfdb6bb5c38..4077565c9934 100644
> > > --- a/arch/loongarch/net/bpf_jit.c
> > > +++ b/arch/loongarch/net/bpf_jit.c
> > > @@ -1361,7 +1361,8 @@ static void restore_args(struct jit_ctx *ctx, int nargs, int args_off)
> > > }
> > >
> > > static int invoke_bpf_prog(struct jit_ctx *ctx, struct bpf_tramp_link *l,
> > > - int args_off, int retval_off, int run_ctx_off, bool save_ret)
> > > + const struct btf_func_model *m, int args_off,
> > > + int retval_off, int run_ctx_off, bool save_ret)
> > > {
> > > int ret;
> > > u32 *branch;
> > > @@ -1425,13 +1426,14 @@ static int invoke_bpf_prog(struct jit_ctx *ctx, struct bpf_tramp_link *l,
> > > }
> > >
> > > static void invoke_bpf_mod_ret(struct jit_ctx *ctx, struct bpf_tramp_links *tl,
> > > - int args_off, int retval_off, int run_ctx_off, u32 **branches)
> > > + const struct btf_func_model *m, int args_off,
> > > + int retval_off, int run_ctx_off, u32 **branches)
> > > {
> > > int i;
> > >
> > > emit_insn(ctx, std, LOONGARCH_GPR_ZERO, LOONGARCH_GPR_FP, -retval_off);
> > > for (i = 0; i < tl->nr_links; i++) {
> > > - invoke_bpf_prog(ctx, tl->links[i], args_off, retval_off, run_ctx_off, true);
> > > + invoke_bpf_prog(ctx, tl->links[i], m, args_off, retval_off, run_ctx_off, true);
> > > emit_insn(ctx, ldd, LOONGARCH_GPR_T1, LOONGARCH_GPR_FP, -retval_off);
> > > branches[i] = (u32 *)ctx->image + ctx->idx;
> > > emit_insn(ctx, nop);
> > > @@ -1448,6 +1450,30 @@ void arch_free_bpf_trampoline(void *image, unsigned int size)
> > > bpf_prog_pack_free(image, size);
> > > }
> > >
> > > +/*
> > > + * Sign-extend the register if necessary
> > > + */
> > > +static int sign_extend(struct jit_ctx *ctx, int r, u8 size)
> > > +{
> > > + switch (size) {
> > > + case 1:
> > > + emit_insn(ctx, sllid, r, r, 56);
> > > + emit_insn(ctx, sraid, r, r, 56);
> > > + return 0;
> > > + case 2:
> > > + emit_insn(ctx, sllid, r, r, 48);
> > > + emit_insn(ctx, sraid, r, r, 48);
> > > + return 0;
> > > + case 4:
> > > + emit_insn(ctx, addiw, r, r, 0);
> > > + return 0;
> > > + case 8:
> > > + return 0;
> > > + default:
> > > + return -1;
> > > + }
> > > +}
> > > +
> > > static int __arch_prepare_bpf_trampoline(struct jit_ctx *ctx, struct bpf_tramp_image *im,
> > > const struct btf_func_model *m, struct bpf_tramp_links *tlinks,
> > > void *func_addr, u32 flags)
> > > @@ -1602,8 +1628,8 @@ static int __arch_prepare_bpf_trampoline(struct jit_ctx *ctx, struct bpf_tramp_i
> > > }
> > >
> > > for (i = 0; i < fentry->nr_links; i++) {
> > > - ret = invoke_bpf_prog(ctx, fentry->links[i], args_off, retval_off,
> > > - run_ctx_off, flags & BPF_TRAMP_F_RET_FENTRY_RET);
> > > + ret = invoke_bpf_prog(ctx, fentry->links[i], m, args_off, retval_off,
> > > + run_ctx_off, flags & BPF_TRAMP_F_RET_FENTRY_RET);
> > > if (ret)
> > > return ret;
> > > }
> > > @@ -1612,7 +1638,7 @@ static int __arch_prepare_bpf_trampoline(struct jit_ctx *ctx, struct bpf_tramp_i
> > > if (!branches)
> > > return -ENOMEM;
> > >
> > > - invoke_bpf_mod_ret(ctx, fmod_ret, args_off, retval_off, run_ctx_off, branches);
> > > + invoke_bpf_mod_ret(ctx, fmod_ret, m, args_off, retval_off, run_ctx_off, branches);
> > > }
> > >
> > > if (flags & BPF_TRAMP_F_CALL_ORIG) {
> > > @@ -1638,7 +1664,8 @@ static int __arch_prepare_bpf_trampoline(struct jit_ctx *ctx, struct bpf_tramp_i
> > > }
> > >
> > > for (i = 0; i < fexit->nr_links; i++) {
> > > - ret = invoke_bpf_prog(ctx, fexit->links[i], args_off, retval_off, run_ctx_off, false);
> > > + ret = invoke_bpf_prog(ctx, fexit->links[i], m, args_off,
> > > + retval_off, run_ctx_off, false);
> > > if (ret)
> > > goto out;
> > > }
> > > @@ -1657,6 +1684,12 @@ static int __arch_prepare_bpf_trampoline(struct jit_ctx *ctx, struct bpf_tramp_i
> > > if (save_ret) {
> > > emit_insn(ctx, ldd, LOONGARCH_GPR_A0, LOONGARCH_GPR_FP, -retval_off);
> > > emit_insn(ctx, ldd, regmap[BPF_REG_0], LOONGARCH_GPR_FP, -(retval_off - 8));
> > > + if (is_struct_ops) {
> > > + move_reg(ctx, LOONGARCH_GPR_A0, regmap[BPF_REG_0]);
> > > + ret = sign_extend(ctx, LOONGARCH_GPR_A0, m->ret_size);
> > > + if (ret)
> > > + goto out;
> > > + }
> > > }
> > >
> > > emit_insn(ctx, ldd, LOONGARCH_GPR_S1, LOONGARCH_GPR_FP, -sreg_off);
> > > --
> > > 2.43.5
> > >
> >
> > Tested-by: Vincent Li <vincent.mc.li@xxxxxxxxx>
> >
> > [root@fedora bpf]# ./test_progs -t struct_ops -d struct_ops_multi_pages
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> > Summary: 8/25 PASSED, 3 SKIPPED, 0 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a fentry_test/fentry
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #109/1 fentry_test/fentry:OK
> > #109 fentry_test:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/26 PASSED, 3 SKIPPED, 1 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a fexit_sleep
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #111 fexit_sleep:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/25 PASSED, 3 SKIPPED, 1 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a test_overhead
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> > #452 test_overhead:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/25 PASSED, 3 SKIPPED, 1 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a trampoline_count
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> > #469 trampoline_count:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/25 PASSED, 3 SKIPPED, 1 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a fexit_test/fexit
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #113/1 fexit_test/fexit:OK
> > #113 fexit_test:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/26 PASSED, 3 SKIPPED, 1 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a fentry_fexit
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #108 fentry_fexit:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/25 PASSED, 3 SKIPPED, 1 FAILED
> > [root@fedora bpf]#
> > [root@fedora bpf]#
> > [root@fedora bpf]# ./test_progs -t struct_ops -a modify_return
> > #15/1 bad_struct_ops/invalid_prog_reuse:OK
> > #15/2 bad_struct_ops/unused_program:OK
> > #15 bad_struct_ops:OK
> > #204 modify_return:OK
> > #408/1 struct_ops_autocreate/cant_load_full_object:OK
> > #408/2 struct_ops_autocreate/can_load_partial_object:OK
> > #408/3 struct_ops_autocreate/autoload_and_shadow_vars:OK
> > #408/4 struct_ops_autocreate/optional_maps:OK
> > #408 struct_ops_autocreate:OK
> > #409/1 struct_ops_kptr_return/kptr_return:OK
> > #409/2 struct_ops_kptr_return/kptr_return_fail__wrong_type:OK
> > #409/3 struct_ops_kptr_return/kptr_return_fail__invalid_scalar:OK
> > #409/4 struct_ops_kptr_return/kptr_return_fail__nonzero_offset:OK
> > #409/5 struct_ops_kptr_return/kptr_return_fail__local_kptr:OK
> > #409 struct_ops_kptr_return:OK
> > #410/1 struct_ops_maybe_null/maybe_null:OK
> > #410/2 struct_ops_maybe_null/maybe_null_fail:OK
> > #410 struct_ops_maybe_null:OK
> > #411/1 struct_ops_module/struct_ops_load:OK
> > #411/2 struct_ops_module/struct_ops_not_zeroed:OK
> > #411/3 struct_ops_module/struct_ops_incompatible:OK
> > #411/4 struct_ops_module/struct_ops_null_out_cb:OK
> > #411/5 struct_ops_module/struct_ops_forgotten_cb:OK
> > #411/6 struct_ops_module/test_detach_link:OK
> > #411/7 struct_ops_module/unsupported_ops:OK
> > #411 struct_ops_module:OK
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > #413/1 struct_ops_no_cfi/load_bpf_test_no_cfi:OK
> > #413 struct_ops_no_cfi:OK
> > #414/1 struct_ops_private_stack/private_stack:SKIP
> > #414/2 struct_ops_private_stack/private_stack_fail:SKIP
> > #414/3 struct_ops_private_stack/private_stack_recur:SKIP
> > #414 struct_ops_private_stack:SKIP
> > #415/1 struct_ops_refcounted/refcounted:OK
> > #415/2 struct_ops_refcounted/refcounted_fail__ref_leak:OK
> > #415/3 struct_ops_refcounted/refcounted_fail__global_subprog:OK
> > #415/4 struct_ops_refcounted/refcounted_fail__tail_call:OK
> > #415 struct_ops_refcounted:OK
> >
> > All error logs:
> > do_struct_ops_multi_pages:PASS:struct_ops_multi_pages_open_and_load 0 nsec
> > do_struct_ops_multi_pages:FAIL:attach_multi_pages unexpected error: -7
> > #412/1 struct_ops_multi_pages/multi_pages:FAIL
> > #412 struct_ops_multi_pages:FAIL
> > Summary: 9/25 PASSED, 3 SKIPPED, 1 FAILED
>
> oops, missed the ns_bpf_qdisc, here it is.
>
> [root@fedora bpf]# ./test_progs -a ns_bpf_qdisc
> #213/1 ns_bpf_qdisc/fifo:OK
> #213/2 ns_bpf_qdisc/fq:OK
> #213/3 ns_bpf_qdisc/attach to mq:OK
> #213/4 ns_bpf_qdisc/attach to non root:OK
> #213/5 ns_bpf_qdisc/incompl_ops:OK
> #213 ns_bpf_qdisc:OK
> Summary: 1/5 PASSED, 0 SKIPPED, 0 FAILED
extra test just for the later reference:
[root@fedora bpf]# ./test_progs -a fentry_attach_btf_presence
#106 fentry_attach_btf_presence:OK
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
[root@fedora bpf]#
[root@fedora bpf]#
[root@fedora bpf]# ./test_progs -a fentry_attach_stress
#107 fentry_attach_stress:OK
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
[root@fedora bpf]#
[root@fedora bpf]#
[root@fedora bpf]# ./test_progs -a fentry_test
#109/1 fentry_test/fentry:OK
fentry_many_args:PASS:fentry_many_args_skel_load 0 nsec
libbpf: prog 'test2': failed to attach: -ENOTSUPP
libbpf: prog 'test2': failed to auto-attach: -ENOTSUPP
fentry_many_args:FAIL:fentry_many_args_attach unexpected error: -524 (errno 524)
#109/2 fentry_test/fentry_many_args:FAIL
#109 fentry_test:FAIL
All error logs:
fentry_many_args:PASS:fentry_many_args_skel_load 0 nsec
libbpf: prog 'test2': failed to attach: -ENOTSUPP
libbpf: prog 'test2': failed to auto-attach: -ENOTSUPP
fentry_many_args:FAIL:fentry_many_args_attach unexpected error: -524 (errno 524)
#109/2 fentry_test/fentry_many_args:FAIL
#109 fentry_test:FAIL
Summary: 0/1 PASSED, 0 SKIPPED, 1 FAILED
[root@fedora bpf]#
[root@fedora bpf]#
[root@fedora bpf]# ./test_progs -a fexit_bpf2bpf
#110/1 fexit_bpf2bpf/target_no_callees:OK
#110/2 fexit_bpf2bpf/target_yes_callees:OK
#110/3 fexit_bpf2bpf/func_replace:OK
#110/4 fexit_bpf2bpf/func_replace_verify:OK
#110/5 fexit_bpf2bpf/func_sockmap_update:OK
#110/6 fexit_bpf2bpf/func_replace_return_code:OK
#110/7 fexit_bpf2bpf/func_map_prog_compatibility:OK
#110/8 fexit_bpf2bpf/func_replace_unreliable:OK
#110/9 fexit_bpf2bpf/func_replace_multi:OK
#110/10 fexit_bpf2bpf/fmod_ret_freplace:OK
#110/11 fexit_bpf2bpf/func_replace_global_func:OK
#110/12 fexit_bpf2bpf/fentry_to_cgroup_bpf:OK
#110/13 fexit_bpf2bpf/func_replace_progmap:OK
#110 fexit_bpf2bpf:OK
Summary: 1/13 PASSED, 0 SKIPPED, 0 FAILED
[root@fedora bpf]#
[root@fedora bpf]#
[root@fedora bpf]# ./test_progs -a fexit_sleep
#111 fexit_sleep:OK
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
[root@fedora bpf]#
[root@fedora bpf]#
[root@fedora bpf]# ./test_progs -a fexit_stress
#112 fexit_stress:OK
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
[root@fedora bpf]#
[root@fedora bpf]#
[root@fedora bpf]# ./test_progs -a fexit_test
#113/1 fexit_test/fexit:OK
fexit_many_args:PASS:fexit_many_args_skel_load 0 nsec
libbpf: prog 'test2': failed to attach: -ENOTSUPP
libbpf: prog 'test2': failed to auto-attach: -ENOTSUPP
fexit_many_args:FAIL:fexit_many_args_attach unexpected error: -524 (errno 524)
#113/2 fexit_test/fexit_many_args:FAIL
#113 fexit_test:FAIL
All error logs:
fexit_many_args:PASS:fexit_many_args_skel_load 0 nsec
libbpf: prog 'test2': failed to attach: -ENOTSUPP
libbpf: prog 'test2': failed to auto-attach: -ENOTSUPP
fexit_many_args:FAIL:fexit_many_args_attach unexpected error: -524 (errno 524)
#113/2 fexit_test/fexit_many_args:FAIL
#113 fexit_test:FAIL
Summary: 0/1 PASSED, 0 SKIPPED, 1 FAILED
[root@fedora bpf]#
