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lightningd: fix crash when failing htlc once channeld dies.

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We were reaching through it to get `ld`, but channeld is already dead.
Caught this on test_onchaind_replay (without valgrind) on my test machine:

    INFO 0266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c03518-chan#1: Peer transient failure in CHANNELD_NORMAL: channeld: Owning subdaemon channeld died (62208)
    **BROKEN** lightningd: FATAL SIGNAL 11 (version f6e1735)
    **BROKEN** lightningd: backtrace: common/daemon.c:44 (send_backtrace) 0x5634dc83dc55
    **BROKEN** lightningd: backtrace: common/daemon.c:52 (crashdump) 0x5634dc83dca9
    **BROKEN** lightningd: backtrace: (null):0 ((null)) 0x7fd4b7c0b46f
    **BROKEN** lightningd: backtrace: lightningd/peer_htlcs.c:285 (failmsg_incorrect_or_unknown) 0x5634dc82625a
    **BROKEN** lightningd: backtrace: lightningd/htlc_set.c:109 (htlc_set_add) 0x5634dc801e5c
    **BROKEN** lightningd: backtrace: lightningd/peer_htlcs.c:496 (handle_localpay) 0x5634dc826997
    **BROKEN** lightningd: backtrace: lightningd/peer_htlcs.c:1008 (htlc_accepted_hook_callback) 0x5634dc827e60
    **BROKEN** lightningd: backtrace: lightningd/plugin_hook.c:197 (plugin_hook_callback) 0x5634dc831ea1
    **BROKEN** lightningd: backtrace: lightningd/plugin.c:261 (plugin_response_handle) 0x5634dc82d2c3
    **BROKEN** lightningd: backtrace: lightningd/plugin.c:359 (plugin_read_json_one) 0x5634dc82d46f
    **BROKEN** lightningd: backtrace: lightningd/plugin.c:391 (plugin_read_json) 0x5634dc82d5c6
    **BROKEN** lightningd: backtrace: ccan/ccan/io/io.c:59 (next_plan) 0x5634dc896319
    **BROKEN** lightningd: backtrace: ccan/ccan/io/io.c:407 (do_plan) 0x5634dc896efe
    **BROKEN** lightningd: backtrace: ccan/ccan/io/io.c:417 (io_ready) 0x5634dc896f40
   
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2020-04-15 19:49:46 +09:30
parent 1dc281c111
commit 2c3543e42d
5 changed files with 15 additions and 12 deletions
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6
lightningd/htlc_set.c
View file

@ -106,7 +106,7 @@ void htlc_set_add(struct lightningd *ld,
total_msat, payment_secret);
if (!details) {
local_fail_in_htlc(hin,
take(failmsg_incorrect_or_unknown(NULL, hin)));
take(failmsg_incorrect_or_unknown(NULL, ld, hin)));
return;
}
@ -130,7 +130,7 @@ void htlc_set_add(struct lightningd *ld,
/* We check this now, since we want to fail with this as soon
* as possible, to avoid other probing attacks. */
if (!payment_secret) {
local_fail_in_htlc(hin, take(failmsg_incorrect_or_unknown(NULL, hin)));
local_fail_in_htlc(hin, take(failmsg_incorrect_or_unknown(NULL, ld, hin)));
return;
}
tal_arr_expand(&set->htlcs, hin);
@ -193,7 +193,7 @@ void htlc_set_add(struct lightningd *ld,
/* This catches the case of the first payment in a set. */
if (!payment_secret) {
htlc_set_fail(set,
take(failmsg_incorrect_or_unknown(NULL, hin)));
take(failmsg_incorrect_or_unknown(NULL, ld, hin)));
return;
}
}

14
lightningd/invoice.c
View file

@ -163,7 +163,7 @@ static void invoice_payload_remove_set(struct htlc_set *set,
}
static const u8 *hook_gives_failmsg(const tal_t *ctx,
struct log *log,
struct lightningd *ld,
const struct htlc_in *hin,
const char *buffer,
const jsmntok_t *toks)
@ -181,7 +181,7 @@ static const u8 *hook_gives_failmsg(const tal_t *ctx,
if (json_tok_streq(buffer, resulttok, "continue")) {
return NULL;
} else if (json_tok_streq(buffer, resulttok, "reject")) {
return failmsg_incorrect_or_unknown(ctx, hin);
return failmsg_incorrect_or_unknown(ctx, ld, hin);
} else
fatal("Invalid invoice_payment hook result: %.*s",
toks[0].end - toks[0].start, buffer);
@ -204,7 +204,7 @@ static const u8 *hook_gives_failmsg(const tal_t *ctx,
static bool warned = false;
if (!warned) {
warned = true;
log_unusual(log,
log_unusual(ld->log,
"Plugin did not return object with "
"'result' or 'failure_message' fields. "
"This is now deprecated and you should "
@ -212,7 +212,7 @@ static const u8 *hook_gives_failmsg(const tal_t *ctx,
"{'result': 'reject'} or "
"{'failure_message'... instead.");
}
return failmsg_incorrect_or_unknown(ctx, hin);
return failmsg_incorrect_or_unknown(ctx, ld, hin);
}
if (!json_to_number(buffer, t, &val))
@ -227,7 +227,7 @@ static const u8 *hook_gives_failmsg(const tal_t *ctx,
" changing to incorrect_or_unknown_payment_details",
val);
return failmsg_incorrect_or_unknown(ctx, hin);
return failmsg_incorrect_or_unknown(ctx, ld, hin);
}
static void
@ -258,12 +258,12 @@ invoice_payment_hook_cb(struct invoice_payment_hook_payload *payload,
* we can also fail */
if (!wallet_invoice_find_by_label(ld->wallet, &invoice, payload->label)) {
htlc_set_fail(payload->set, take(failmsg_incorrect_or_unknown(
NULL, payload->set->htlcs[0])));
NULL, ld, payload->set->htlcs[0])));
return;
}
/* Did we have a hook result? */
failmsg = hook_gives_failmsg(NULL, ld->log,
failmsg = hook_gives_failmsg(NULL, ld,
payload->set->htlcs[0], buffer, toks);
if (failmsg) {
htlc_set_fail(payload->set, take(failmsg));

5
lightningd/peer_htlcs.c
View file

@ -278,11 +278,12 @@ void local_fail_in_htlc_needs_update(struct htlc_in *hin,
/* Helper to create (common) WIRE_INCORRECT_OR_UNKNOWN_PAYMENT_DETAILS */
const u8 *failmsg_incorrect_or_unknown(const tal_t *ctx,
struct lightningd *ld,
const struct htlc_in *hin)
{
return towire_incorrect_or_unknown_payment_details(
ctx, hin->msat,
get_block_height(hin->key.channel->owner->ld->topology));
get_block_height(ld->topology));
}
/* localfail are for handing to the local payer if it's local. */
@ -489,7 +490,7 @@ static void handle_localpay(struct htlc_in *hin,
hin->cltv_expiry,
get_block_height(ld->topology),
ld->config.cltv_final);
failmsg = failmsg_incorrect_or_unknown(NULL, hin);
failmsg = failmsg_incorrect_or_unknown(NULL, ld, hin);
goto fail;
}

1
lightningd/peer_htlcs.h
View file

@ -82,5 +82,6 @@ void json_format_forwarding_object(struct json_stream *response, const char *fie
/* Helper to create (common) WIRE_INCORRECT_OR_UNKNOWN_PAYMENT_DETAILS */
const u8 *failmsg_incorrect_or_unknown(const tal_t *ctx,
struct lightningd *ld,
const struct htlc_in *hin);
#endif /* LIGHTNING_LIGHTNINGD_PEER_HTLCS_H */

1
lightningd/test/run-invoice-select-inchan.c
View file

@ -92,6 +92,7 @@ char *encode_scriptpubkey_to_addr(const tal_t *ctx UNNEEDED,
{ fprintf(stderr, "encode_scriptpubkey_to_addr called!\n"); abort(); }
/* Generated stub for failmsg_incorrect_or_unknown */
const u8 *failmsg_incorrect_or_unknown(const tal_t *ctx UNNEEDED,
struct lightningd *ld UNNEEDED,
const struct htlc_in *hin UNNEEDED)
{ fprintf(stderr, "failmsg_incorrect_or_unknown called!\n"); abort(); }
/* Generated stub for fatal */