Hi, You forgot to cc the mailing list. Adding it.
On Fri, May 17, 2019 at 04:50:02AM +0300, Zvi Vered wrote: > Hi Janathan, All, > > I solved the path issue with > > export LTTNG_CONSUMERD32_BIN=/lib/lttng/libexec > export LTTNG_CONSUMERD32_LIBDIR =/lib > export LTTNG_SESSION_CONFIG_XSD_PATH=/share/lttng/... This is a way to solve it, I would still recommend you fix it at the source (proper cross build). ... > .... > DEBUG3 - 00:13:48.436226116 [1980/1980]: Looking for a kernel consumer at > these locations: (in spawn_consumerd() at main.c:2429) > DEBUG3 - 00:13:48.436252139 [1980/1980]: 1) NULL (in > spawn_consumerd() at main.c:2430) > DEBUG3 - 00:13:48.436256414 [1980/1980]: 2) > /64_sw/git/zvi_vered/MY_PROJ/linux4.9.20/boot/rootfs/lib/lttng/libexec/lttng-consumerd > (in spawn_consumerd() at main.c:2431) > DEBUG3 - 00:13:48.436260543 [1980/1980]: 3) /lib/lttng/libexec (in > spawn_consumerd() at main.c:2432) > DEBUG3 - 00:13:48.436313492 [1980/1980]: Found location #3 (in > spawn_consumerd() at main.c:2441) > DEBUG1 - 00:13:48.436319027 [1980/1980]: Using kernel consumer at: > /lib/lttng/libexec (in spawn_consumerd() at main.c:2448) > PERROR - 00:13:48.436341261 [1980/1980]: Consumer execl(): Permission > denied (in spawn_consumerd() at main.c:2539) We found the consumerd in /lib/lttng/libexec/lttng-consumerd. Good. We now try to execl the following: /lib/lttng/libexec/lttng-consumerd -k --consumerd-cmd-sock <a_path> --consumerd-error-sock <b_path> --group root And execl returns "Permission Denied". Clearly, /lib/lttng/libexec/lttng-consumerd have some permissions problem. "Permission denied" is linked to EACCES on my system. asm-generic/errno-base.h 17:#define EACCES 13 /* Permission denied */ "man execve" list all the reasons why execl might return EACCES per "man execl": EACCES Search permission is denied on a component of the path prefix of filename or the name of a script interpreter. (See also path_resolution(7).) EACCES The file or a script interpreter is not a regular file. EACCES Execute permission is denied for the file or a script or ELF interpreter. EACCES The filesystem is mounted noexec. One of them probably fit your current scenario. Let us know how it goes. Cheers -- Jonathan Rajotte-Julien EfficiOS _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
