1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 | The following is an example of the putnexts.d script.
When investigating the operation of kernel streams, it can be extreamly
useful to trace who (which stack trace) is calling putnext to who (the
kernel modele). This script does that,
# putnexts.d
dtrace: script './putnexts.d' matched 1 probe
^C
bufmod
bufmod`sbrput+0xb9
unix`putnext+0x1b7
pts`ptswput+0x1e1
unix`putnext+0x1b7
ptem`ptemwput+0x22f
1
ip
ip`ip_fanout_proto+0x4d2
ip`ip_proto_input+0x616
ip`ip_fanout_proto_again+0x160
ip`ip_proto_input+0x530
ip`ip_rput+0x50d
1
ip
ip`ip_wput_ipsec_out+0x60a
ip`ipsec_out_process+0x322
ip`ip_wput_ire+0x18d0
ip`ip_output+0x70a
ip`ip_wput+0x14
1
ip
ip`ip_wput_ire+0x17d1
ip`ip_output+0x70a
ip`tcp_send_data+0x68c
ip`tcp_ack_timer+0xb0
ip`tcp_timer_handler+0x1d
1
ip
ip`ip_udp_input+0x4e4
ip`ip_rput+0x540
unix`putnext+0x1b7
gld`gld_recv_tagged+0xed
gld`gld_recv+0x10
1
ldterm
genunix`putnextctl1+0x52
ldterm`ldterm_dosig+0x7b
ldterm`ldtermrput+0x6fe
unix`putnext+0x1b7
ptem`ptemrput+0xff
1
ldterm
ldterm`ldterm_ioctl_reply+0x93
ldterm`ldtermrput+0x186
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
genunix`putnext_tail+0x88
1
ldterm
ldterm`ldtermrput+0x12a
unix`putnext+0x1b7
ptem`ptemrput+0xff
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
1
ldterm
ldterm`ldterm_dosig+0x16f
ldterm`ldtermrput+0x6fe
unix`putnext+0x1b7
ptem`ptemrput+0xff
unix`putnext+0x1b7
1
ldterm
genunix`putnextctl1+0x52
ldterm`ldterm_dosig+0x124
ldterm`ldtermrput+0x6fe
unix`putnext+0x1b7
ptem`ptemrput+0xff
1
ldterm
ldterm`ldterm_do_ioctl+0xd8b
ldterm`ldtermwmsg+0x41
ldterm`ldtermwput+0x8e
unix`putnext+0x1b7
ttcompat`ttcompat_do_ioctl+0x425
1
ldterm
genunix`putnextctl1+0x52
ldterm`ldterm_dosig+0xe3
ldterm`ldtermrput+0x6fe
unix`putnext+0x1b7
ptem`ptemrput+0xff
1
ptem
genunix`qreply+0x23
ptem`ptemwmsg+0x2b9
ptem`ptemwput+0xe1
unix`putnext+0x1b7
ldterm`ldterm_do_ioctl+0xd8b
1
ptem
ptem`ptemwput+0x22f
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
genunix`putnext_tail+0x88
unix`putnext+0x38e
1
ptem
ptem`ptemrput+0xff
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
genunix`putnext_tail+0x88
unix`putnext+0x38e
1
ptem
ptem`ptemwmsg+0x44d
ptem`ptemwput+0xe1
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
genunix`putnext_tail+0x88
1
ptm
pts`ptswsrv+0x7c
genunix`runservice+0x2a
genunix`queue_service+0x30
genunix`stream_service+0x69
genunix`taskq_d_thread+0x8a
1
ptm
pts`ptswput+0x1e1
unix`putnext+0x1b7
ptem`ptemwput+0x22f
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
1
pts
genunix`qreply+0x23
pts`ptswput+0x201
unix`putnext+0x1b7
ptem`ptemwput+0x22f
genunix`qdrain_syncq+0x68
1
strwhead
genunix`qreply+0x23
genunix`strrput_nondata+0x22d
genunix`strrput+0x256
unix`putnext+0x1b7
ttcompat`ttcompatrput+0x1d
1
strwhead
genunix`strdoioctl+0x30d
genunix`strioctl+0x6ae
specfs`spec_ioctl+0x48
genunix`fop_ioctl+0x1e
genunix`ioctl+0x199
1
tcp
ip`tcp_rput_data+0x2221
ip`tcp_input+0x39
ip`squeue_enter+0x1bf
ip`ip_tcp_input+0x9f8
ip`ip_rput+0x583
1
ttcompat
ttcompat`ttcompat_ioctl_ack+0x398
ttcompat`ttcompatrput+0x39
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
genunix`putnext_tail+0x88
1
ttcompat
ttcompat`ttcompatrput+0x1d
unix`putnext+0x1b7
ldterm`ldtermrput+0x12a
unix`putnext+0x1b7
ptem`ptemrput+0xff
1
ttcompat
ttcompat`ttcompatrput+0x1d
unix`putnext+0x1b7
genunix`putnextctl1+0x52
ldterm`ldterm_dosig+0x124
ldterm`ldtermrput+0x6fe
1
ttcompat
ttcompat`ttcompatwput+0x32
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
genunix`putnext_tail+0x88
unix`putnext+0x38e
1
ttcompat
ttcompat`ttcompat_do_ioctl+0x425
ttcompat`ttcompatwput+0x152
unix`putnext+0x1b7
genunix`strdoioctl+0x30d
genunix`strioctl+0x6ae
1
ttcompat
ttcompat`ttcompatrput+0x1d
unix`putnext+0x1b7
genunix`putnextctl1+0x52
ldterm`ldterm_dosig+0xe3
ldterm`ldtermrput+0x6fe
1
tun
tun`tun_rdata_v4+0x58c
tun`tun_rproc+0x256
tun`tun_rput+0x23
unix`putnext+0x1b7
ip`ip_fanout_proto+0x4d2
1
tun
tun`tun_wputnext_v4+0x1f8
tun`tun_wproc_mdata+0x71
tun`tun_wproc+0xdf
tun`tun_wput+0x23
unix`putnext+0x1b7
1
udp
udp`udp_rput+0x975
unix`putnext+0x1b7
ip`ip_udp_input+0x4e4
ip`ip_rput+0x540
unix`putnext+0x1b7
1
conskbd
genunix`qreply+0x23
conskbd`conskbd_mux_upstream_msg+0x24f
conskbd`conskbd_lqs_ack_complete+0x65
conskbd`conskbdlrput+0x9d
unix`putnext+0x1b7
2
conskbd
conskbd`conskbdlwserv+0x2d
genunix`runservice+0x2a
genunix`queue_service+0x30
genunix`stream_service+0x69
genunix`taskq_d_thread+0x8a
2
kb8042
genunix`qreply+0x23
genunix`miocack+0x2a
kb8042`kb8042_ioctlmsg+0x281
kb8042`kb8042_wsrv+0xcb
genunix`runservice+0x2a
2
strwhead
genunix`strdoioctl+0x30d
genunix`strioctl+0x587
specfs`spec_ioctl+0x48
genunix`fop_ioctl+0x1e
genunix`ioctl+0x199
2
consms
consms`consmslrput+0x15a
unix`putnext+0x1b7
vuid3ps2`vuid3ps2_putnext+0x94
vuid3ps2`sendButtonEvent+0x58
vuid3ps2`vuid3ps2+0x8ee
4
vuid3ps2
vuid3ps2`vuid3ps2_putnext+0x94
vuid3ps2`sendButtonEvent+0x58
vuid3ps2`vuid3ps2+0x8ee
vuid3ps2`vuidmice_rsrv+0x69
genunix`runservice+0x2a
4
ip
ip`tcp_send_data+0x55d
ip`tcp_ack_timer+0xb0
ip`tcp_timer_handler+0x1d
ip`squeue_drain+0xbb
ip`squeue_worker+0xeb
10
ip
ip`tcp_send_data+0x55d
ip`tcp_rput_data+0x259e
ip`squeue_enter+0x1bf
ip`ip_tcp_input+0xcfb
ip`ip_rput+0x583
11
ip
ip`ip_fanout_udp_conn+0x14b
ip`ip_fanout_udp+0x373
ip`ip_wput_local+0x16f
ip`ip_wput_ire+0x1436
ip`ip_output+0x70a
14
strwhead
genunix`strput+0x168
genunix`strputmsg+0x1d5
genunix`msgio+0x142
genunix`putmsg+0x6e
unix`sys_sysenter+0xdc
14
timod
timod`timodwput+0xea
unix`putnext+0x1b7
genunix`strput+0x168
genunix`strputmsg+0x1d5
genunix`msgio+0x142
14
timod
timod`timodrput+0xa9
unix`putnext+0x1b7
udp`udp_rput+0x975
unix`putnext+0x1b7
ip`ip_fanout_udp_conn+0x14b
14
udp
udp`udp_rput+0x975
unix`putnext+0x1b7
ip`ip_fanout_udp_conn+0x14b
ip`ip_fanout_udp+0x373
ip`ip_wput_local+0x16f
14
udp
udp`udp_wput+0x378
unix`putnext+0x1b7
timod`timodwput+0xea
unix`putnext+0x1b7
genunix`strput+0x168
14
bufmod
bufmod`sbsendit+0x5a
bufmod`sbclosechunk+0x2e
bufmod`sbrput+0xee
genunix`qdrain_syncq+0x68
genunix`drain_syncq+0x1a4
21
conskbd
kbtrans`kbtrans_queueevent+0x5c
kbtrans`kbtrans_keyreleased+0x3d
kbtrans`kbtrans_untrans_keyreleased_raw+0x10
kbtrans`kbtrans_processkey+0x20
kbtrans`kbtrans_streams_key+0x95
22
kb8042
kbtrans`kbtrans_queueevent+0x5c
kbtrans`kbtrans_keyreleased+0x3d
kbtrans`kbtrans_untrans_keyreleased_raw+0x10
kbtrans`kbtrans_processkey+0x20
kbtrans`kbtrans_streams_key+0x95
22
ldterm
ldterm`ldterm_msg_upstream+0x2c
ldterm`vmin_satisfied+0x5e
ldterm`ldterm_dononcanon+0x230
ldterm`ldtermrmsg+0x252
ldterm`ldtermrput+0x7e9
22
ttcompat
ttcompat`ttcompatrput+0x1d
unix`putnext+0x1b7
ldterm`ldterm_msg_upstream+0x2c
ldterm`vmin_satisfied+0x5e
ldterm`ldterm_dononcanon+0x230
22
bufmod
bufmod`sbwput+0x33
unix`putnext+0x1b7
genunix`strput+0x168
genunix`strwrite+0x151
specfs`spec_write+0x4e
23
ptem
ptem`ptemrput+0xff
unix`putnext+0x1b7
ptm`ptmwsrv+0x90
genunix`runservice+0x2a
genunix`queue_service+0x30
23
pts
ptm`ptmwsrv+0x90
genunix`runservice+0x2a
genunix`queue_service+0x30
genunix`stream_runservice+0x96
genunix`strput+0x171
23
conskbd
kbtrans`kbtrans_queueevent+0x5c
kbtrans`kbtrans_queuepress+0x5f
kbtrans`kbtrans_untrans_keypressed_raw+0x36
kbtrans`kbtrans_processkey+0x30
kbtrans`kbtrans_streams_key+0x95
24
kb8042
kbtrans`kbtrans_queueevent+0x5c
kbtrans`kbtrans_queuepress+0x5f
kbtrans`kbtrans_untrans_keypressed_raw+0x36
kbtrans`kbtrans_processkey+0x30
kbtrans`kbtrans_streams_key+0x95
24
ip
ip`tcp_send_data+0x55d
ip`tcp_output+0x562
ip`squeue_enter+0x1bf
ip`tcp_wput+0x234
unix`putnext+0x1b7
32
ldterm
ldterm`ldtermwmsg+0x100
ldterm`ldtermwput+0x8e
unix`putnext+0x1b7
ttcompat`ttcompatwput+0x32
unix`putnext+0x1b7
36
ptem
ptem`ptemwmsg+0x44d
ptem`ptemwput+0xe1
unix`putnext+0x1b7
ldterm`ldtermwmsg+0x100
ldterm`ldtermwput+0x8e
36
ptm
pts`ptswsrv+0x7c
genunix`runservice+0x2a
genunix`queue_service+0x30
genunix`stream_runservice+0x96
genunix`strput+0x171
36
ttcompat
ttcompat`ttcompatwput+0x32
unix`putnext+0x1b7
genunix`strput+0x168
genunix`strwrite+0x151
specfs`spec_write+0x4e
36
tcp
ip`tcp_rput_data+0x2221
ip`squeue_enter+0x1bf
ip`ip_tcp_input+0xcfb
ip`ip_rput+0x583
unix`putnext+0x1b7
40
rtls
gld`gld_recv_tagged+0xed
gld`gld_recv+0x10
rtls`rtls_receive+0x18f
rtls`rtls_gld_intr+0x133
gld`gld_intr+0x1e
46
consms
consms`consmslrput+0x15a
unix`putnext+0x1b7
vuid3ps2`vuid3ps2_putnext+0x94
vuid3ps2`vuid3ps2+0x82b
vuid3ps2`vuidmice_rsrv+0x69
59
strwhead
genunix`strput+0x168
genunix`strwrite+0x151
specfs`spec_write+0x4e
genunix`fop_write+0x1b
genunix`write+0x29a
59
vuid3ps2
vuid3ps2`vuid3ps2_putnext+0x94
vuid3ps2`vuid3ps2+0x82b
vuid3ps2`vuidmice_rsrv+0x69
genunix`runservice+0x2a
genunix`queue_service+0x30
59
consms
consms`consmslrput+0x15a
unix`putnext+0x1b7
vuid3ps2`vuid3ps2_putnext+0x94
vuid3ps2`vuid3ps2+0x809
vuid3ps2`vuidmice_rsrv+0x69
77
vuid3ps2
vuid3ps2`vuid3ps2_putnext+0x94
vuid3ps2`vuid3ps2+0x809
vuid3ps2`vuidmice_rsrv+0x69
genunix`runservice+0x2a
genunix`queue_service+0x30
77
strwhead
genunix`strput+0x168
genunix`strwrite+0x151
sockfs`socktpi_write+0xcb
genunix`fop_write+0x1b
genunix`writev+0x308
108
rtls
gld`gld_passon+0x9e
gld`gld_sendup+0xfc
gld`gld_recv_tagged+0x15f
gld`gld_recv+0x10
rtls`rtls_receive+0x18f
124
strwhead
genunix`strput+0x168
genunix`strwrite+0x151
sockfs`socktpi_write+0xcb
genunix`fop_write+0x1b
genunix`write+0x29a
138
tl
tl`tl_wput_data_ser+0x5e
genunix`serializer_exec+0x1d
genunix`serializer_enter+0x81
tl`tl_serializer_enter+0x40
tl`tl_wput+0x1c7
214
mouse8042
mouse8042`mouse8042_intr+0x68
i8042`i8042_intr+0xa6
unix`intr_thread+0x107
261
Highlights of the above output include,
- gld calling putnext to rtls (my laptop network device driver)
- ip receive path calling putnext to tcp
- tcp_send_data() calling putnext to ip
|