[systemd-bugs] [Bug 70370] New: [PATCH] Fix for SIGSEGV in systemd-bootchart on short-living processes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70370

          Priority: medium
            Bug ID: 70370
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: [PATCH] Fix for SIGSEGV in systemd-bootchart on
                    short-living processes
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: i.zhbanov at samsung.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

Created attachment 87447
  --> https://bugs.freedesktop.org/attachment.cgi?id=87447&action=edit
[PATCH] Fix for SIGSEGV in systemd-bootchart on short-living processes

The function svg_ps_bars() dereferencess NULL pointer in the line
        endtime = ps->last->sampledata->sampletime;
because of partially initialized ps_struct (ps->last == NULL).

If some process terminates between scaning /proc directory in the log_sample()
function and reading additional information from /proc/PID/... files,
the files couldn't be read, the loop will be continued and partially
initialized structure returned.

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