diff options
Diffstat (limited to 'kernel/gsp_sema_service.c')
| -rw-r--r-- | kernel/gsp_sema_service.c | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c index 27818b8..3e5b9dd 100644 --- a/kernel/gsp_sema_service.c +++ b/kernel/gsp_sema_service.c @@ -6803,6 +6803,7 @@ static int svc_copy_1d(struct nv_vgpu_device *vgpu, u64 dst, u64 src, size_t tot bool audit = total >= SVC_COPY_AUDIT_MIN; u8 *snap = NULL; static u64 bigcopy_log; + static u32 shadow_dst_log; /* r614 diag: shadow-lane dst witness */ bool trace64 = (total == 65536u); const char *dir = "?"; @@ -6919,6 +6920,26 @@ static int svc_copy_1d(struct nv_vgpu_device *vgpu, u64 dst, u64 src, size_t tot } else { dst_shadow = true; svc.vas_shadowed++; + /* + * r614 diag: the r613b red boot's matmul + * wedge began here - the H2D into the + * client's cudaMalloc'd buffer found no + * ledger/pin/walk answer, took the shadow + * silently, and the later GR fill could not + * consume the shadowed bytes (probe=none for + * every arg base; the launch held 15 s, then + * the degenerate refusal consumed it and the + * client spun). Name the first shadow-lane + * device-dst copies of a boot (bounded), so + * the next red boot is greppable where it + * starts instead of only at the launch. + */ + if (shadow_dst_log < 64 && + dst_orig >= SVC_VAS_FLOOR) { + shadow_dst_log++; + pr_info("sema-shadow-dst: h=0x%x dst=0x%llx total=%zu (device VA with no ledger/pin/walk answer; copy runs into the shadow, a GR fill cannot consume it)\n", + owner_ch, dst_orig, total); + } } } else { dst = pa; @@ -20818,7 +20839,14 @@ static void svc_gr_data_fill(struct nv_vgpu_device *vgpu, if (is_arg[w] && svc_fwd_req.gr_n_data == before && svc_gr_src_log < 64) { int vi; - char vb[240]; + /* r614 diag: the r613b red-boot post-mortem could not + * tell which registered pdb would have answered an + * unresolved arg base (the 240-byte buffer truncated + * the walk list at three entries, and only the red + * boot's misses were ever printed). A larger buffer + * with a clamped append keeps every registered + * VASpace's walk verdict visible. */ + char vb[512]; int o = 0; svc_gr_src_log++; @@ -20833,11 +20861,12 @@ static void svc_gr_data_fill(struct nv_vgpu_device *vgpu, svc.vas[vi].entries, base, svc.vas[vi].ap, &wa, &wap, gsp_sema_walk_trace != 0); - o += snprintf(vb + o, sizeof(vb) - o, - " vas[%d] pdb=0x%llx ent=%u ap=%d rc=%d pa=0x%llx", - vi, svc.vas[vi].pdb, - svc.vas[vi].entries, - svc.vas[vi].ap, wrc, wa); + if (o < (int)sizeof(vb) - 1) + o += snprintf(vb + o, sizeof(vb) - o, + " vas[%d] pdb=0x%llx ent=%u ap=%d rc=%d pa=0x%llx", + vi, svc.vas[vi].pdb, + svc.vas[vi].entries, + svc.vas[vi].ap, wrc, wa); } pr_info("vgsp-sema: svc-gr arg-miss base=0x%llx probe=%s n_cand=%u pd_found=%u ipin_n=%u disc=0x%llx/%d%s\n", base, pba_src, n_cand, svc_pd_found, |