This is the mail archive of the systemtap@sourceware.org mailing list for the systemtap project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Frank Ch. Eigler wrote:Seems that checking dw can resolve the error. Did some tests, work fine.Hi -I found one regression since this commit.
I committed some code to dramatically improve the pass-2 and pass-3 processing times for scripts that target the kernel, especially for kernel build trees that have oodles of files under /lib/modules/.../build. It's basically using the offline module search function's predicate vigorously, so that stap doesn't bother open all .ko's on the system just for a kernel probe.
My early testing shows no problems, just speedups, but if you notice debuginfo being found less well than before, please let me know.
- FChE
$ stap -l nfsd.create*
Segmentation fault
[78375.044067] <6>stap[24911]: segfault at 0 ip 0000000000480efb sp 00007ffffe706400 error 4 in stap[400000+142000]
In fact, nfsd.create* includes nfsd.create and nfsd.createv3. In my machine, $ stap -l nfsd.create nfsd.create $ stap -l nfsd.createv3 semantic error: no match while resolving probe point nfsd.createv3
But nfsd.create* will get the error. Gdb said
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 140517345056560 (LWP 24971)]
base_query (this=0x7fffd6b68950, dw=@0x0, params=@0x7fffd6b68b40) at tapsets.cxx:442
442 sess(dw.sess), dw(dw)
If nfsd.createv3 existed in the kernel, there will be OK.
Regards, Wenji
diff --git a/tapsets.cxx b/tapsets.cxx index 9ca25b0..71dd0d9 100644 --- a/tapsets.cxx +++ b/tapsets.cxx @@ -3457,6 +3457,9 @@ dwarf_builder::build(systemtap_session & sess, if (sess.verbose > 3) clog << "dwarf_builder::build for " << module_name << endl;
+ if(!dw) + return; + string mark_name; if (get_param(parameters, TOK_MARK, mark_name)) {
Regards, Wenji
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |