Askrene: fix infinite cost assertion#8832
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rustyrussell merged 2 commits intoElementsProject:masterfrom Jan 13, 2026
Merged
Askrene: fix infinite cost assertion#8832rustyrussell merged 2 commits intoElementsProject:masterfrom
rustyrussell merged 2 commits intoElementsProject:masterfrom
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cln-askrene: plugins/askrene/mcf.c:474: combine_cost_function: Assertion `fcost != INFINITE' failed. cln-askrene: FATAL SIGNAL 6 (version v25.12-131-gb15f386-modded) 0x55703f242fd1 send_backtrace common/daemon.c:38 0x55703f24305b crashdump common/daemon.c:83 0x7f548b421def ??? ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0 0x7f548b47695c __pthread_kill_implementation ./nptl/pthread_kill.c:44 0x7f548b421cc1 __GI_raise ../sysdeps/posix/raise.c:26 0x7f548b40a4ab __GI_abort ./stdlib/abort.c:73 0x7f548b40a41f __assert_fail_base ./assert/assert.c:118 0x55703f234491 combine_cost_function plugins/askrene/mcf.c:474 0x55703f2358b6 single_path_flow plugins/askrene/mcf.c:1213 0x55703f235fa2 linear_routes plugins/askrene/mcf.c:1411 0x55703f236804 single_path_routes plugins/askrene/mcf.c:1656 0x55703f22edad do_getroutes plugins/askrene/askrene.c:689 0x55703f22f269 json_getroutes plugins/askrene/askrene.c:910 0x55703f2411a7 ld_command_handle plugins/libplugin.c:2155 0x55703f2413b1 ld_read_json plugins/libplugin.c:2231 0x55703f271a4d next_plan ccan/ccan/io/io.c:60 0x55703f271ed8 do_plan ccan/ccan/io/io.c:422 0x55703f271f91 io_ready ccan/ccan/io/io.c:439 0x55703f27391b io_loop ccan/ccan/io/poll.c:470 0x55703f2417fd plugin_main plugins/libplugin.c:2429 0x55703f22f753 main plugins/askrene/askrene.c:1452 0x7f548b40bca7 __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 0x7f548b40bd64 __libc_start_main_impl ../csu/libc-start.c:360 0x55703f22baa0 ??? _start+0x20:0 0xffffffffffffffff ??? ???:0 Changelog-None Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
Changelog-Fixed: askrene: fix a plugin crash triggered during single path payments when a channel fees doesn't fit u32. Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
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Fix a plugin crash triggered during single path payments when a channel fees doesn't fit u32.
Addresses one of the assertions mentioned in #8823.