xijinyu has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/488515 ) Change subject: Fix Segmentation fault. ...................................................................... Fix Segmentation fault. When exporting a directory that does not exist in GlusterFS volume, occur seg-fault and the Ganesha process crashes. We are hitting this seg-fault on V4-dev.2 and V4-dev.9: Breakpoint 1, mdcache_exp_release (exp_hdl=0x7fd75c009770) at /usr/src/debug/nfs-ganesha-4-dev.2/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_export.c:184 184 struct mdcache_fsal_export *exp = mdc_export(exp_hdl); Missing separate debuginfos, use: debuginfo-install openssl-libs-1.0.2k-8.el7.x86_64 (gdb) n 185 struct fsal_export *sub_export = exp->mfe_exp.sub_export; (gdb) 188 fsal_hdl = sub_export->fsal; (gdb) 190 LogInfo(COMPONENT_FSAL, "Releasing %s export %" PRIu16 " for %s", (gdb) Program received signal SIGSEGV, Segmentation fault. 0x00007fd8124777ad in mdcache_exp_release (exp_hdl=0x7fd75c009770) at /usr/src/debug/nfs-ganesha-4-dev.2/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_export.c:190 190 LogInfo(COMPONENT_FSAL, "Releasing %s export %" PRIu16 " for %s", (gdb) l 185 struct fsal_export *sub_export = exp->mfe_exp.sub_export; 186 struct fsal_module *fsal_hdl; 187 188 fsal_hdl = sub_export->fsal; 189 190 LogInfo(COMPONENT_FSAL, "Releasing %s export %" PRIu16 " for %s", 191 fsal_hdl->name, op_ctx->ctx_export->export_id, 192 export_path(op_ctx->ctx_export)); 193 194 /* Stop the dirmap thread */ (gdb) p fsal_hdl->name $1 = 0x7fd75c009750 "GLUSTER" (gdb) p op_ctx->ctx_export->export_id Cannot access memory at address 0x68 (gdb) p op_ctx->ctx_export Cannot access memory at address 0x68 Signed-off-by: Xi Jinyu <xijinyu@cmss.chinamobile.com> Change-Id: I10c6ef3d6d904434e9da595de56aa7d3698d47b2 --- M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_export.c 1 file changed, 3 insertions(+), 3 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/15/488515/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/488515 To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I10c6ef3d6d904434e9da595de56aa7d3698d47b2 Gerrit-Change-Number: 488515 Gerrit-PatchSet: 1 Gerrit-Owner: xijinyu <xijinyu@cmss.chinamobile.com> Gerrit-MessageType: newchange