* [Bug translator/13186] New: systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string @ 2011-09-13 19:43 anish at chelsio dot com 2011-09-13 19:50 ` [Bug translator/13186] " anish at chelsio dot com 2011-09-13 19:53 ` jistone at redhat dot com 0 siblings, 2 replies; 3+ messages in thread From: anish at chelsio dot com @ 2011-09-13 19:43 UTC (permalink / raw) To: systemtap http://sourceware.org/bugzilla/show_bug.cgi?id=13186 Bug #: 13186 Summary: systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string Product: systemtap Version: unspecified Status: NEW Severity: normal Priority: P2 Component: translator AssignedTo: systemtap@sourceware.org ReportedBy: anish@chelsio.com Classification: Unclassified probe point : printf("%s : %s\n",thread_indent(1),kernel_string($kobj->dentry->d_name)) error message : Pass 1: parsed user script and 76 library script(s) using 138788virt/22212res/2784shr kb, in 140usr/10sys/152real ms. semantic error: 'struct qstr' is being accessed instead of a member: identifier '$kobj' at /tmp/sysfs.stp:14:53 source: printf("%s : %s\n",thread_indent(1),kernel_string($kobj->dentry->d_name)) ^ Here d_name is a structure of type qstr; which is the offending dereference however the translator points to $kobj instead of d_name. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug translator/13186] systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string 2011-09-13 19:43 [Bug translator/13186] New: systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string anish at chelsio dot com @ 2011-09-13 19:50 ` anish at chelsio dot com 2011-09-13 19:53 ` jistone at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: anish at chelsio dot com @ 2011-09-13 19:50 UTC (permalink / raw) To: systemtap http://sourceware.org/bugzilla/show_bug.cgi?id=13186 --- Comment #1 from Anish Bhatt <anish at chelsio dot com> 2011-09-13 19:50:03 UTC --- Complete script as follows : probe kernel.function("sysfs_create_group@fs/sysfs/group.c") { printf("%s : %s\n",thread_indent(1),kernel_string($kobj->dentry->d_name)) } -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug translator/13186] systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string 2011-09-13 19:43 [Bug translator/13186] New: systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string anish at chelsio dot com 2011-09-13 19:50 ` [Bug translator/13186] " anish at chelsio dot com @ 2011-09-13 19:53 ` jistone at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: jistone at redhat dot com @ 2011-09-13 19:53 UTC (permalink / raw) To: systemtap http://sourceware.org/bugzilla/show_bug.cgi?id=13186 --- Comment #2 from Josh Stone <jistone at redhat dot com> 2011-09-13 19:53:16 UTC --- (In reply to comment #0) > semantic error: 'struct qstr' is being accessed instead of a member: identifier > '$kobj' at /tmp/sysfs.stp:14:53 > source: printf("%s : > %s\n",thread_indent(1),kernel_string($kobj->dentry->d_name)) > ^ > > Here d_name is a structure of type qstr; which is the offending dereference > however the translator points to $kobj instead of d_name. The message is generated by dwflpp::translate_final_fetch_or_store, using the token of the overall expression (e->tok). It should be possible to use the token of the last dereferencing e->component instead, falling back to e->tok only if there are no components. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-09-13 19:53 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-09-13 19:43 [Bug translator/13186] New: systemtap does not correctly point out offending structure when accidentally dereferencing a structure as a string anish at chelsio dot com 2011-09-13 19:50 ` [Bug translator/13186] " anish at chelsio dot com 2011-09-13 19:53 ` jistone at redhat dot com
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