Summary: | sprint_ustack() returns empty strings while sprint_ubacktrace() does not | ||
---|---|---|---|
Product: | systemtap | Reporter: | agentzh <agentzh> |
Component: | tapsets | Assignee: | Unassigned <systemtap> |
Status: | RESOLVED FIXED | ||
Severity: | normal | ||
Priority: | P2 | ||
Version: | unspecified | ||
Target Milestone: | --- | ||
Host: | Target: | ||
Build: | Last reconfirmed: |
Description
agentzh
2018-10-19 18:59:52 UTC
Oh, BTW, I'm using the latest stap master on x86_64 (Fedora 26, kernel 4.16.16). Using `print_ustack(ubacktrace())` works: ``` $ stap -e 'probe process.function("foo") { print_ustack(ubacktrace()); }' -c ./a.out --ldd 0x40048b : foo+0x4/0xb [/mnt/home/agentzh/git/ylang/a.out] 0x40049b : bar+0x9/0xb [/mnt/home/agentzh/git/ylang/a.out] 0x4004a6 : main+0x9/0x13 [/mnt/home/agentzh/git/ylang/a.out] 0x7f3e87d0ffea : __libc_start_main+0xea/0x1c0 [/usr/lib64/libc-2.26.so] 0x4003da : _start+0x2a/0x30 [/mnt/home/agentzh/git/ylang/a.out] ``` Committed a fix to master already. |