Messages in this thread |  | | Date | Tue, 4 Feb 2020 20:26:57 +0100 | From | Jiri Olsa <> | Subject | Re: perf not picking up symbols for namespaced processes |
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On Tue, Feb 04, 2020 at 03:09:48PM +0000, Marek Majkowski wrote: > On Fri, Dec 6, 2019 at 2:17 AM Ivan Babrou <ivan@cloudflare.com> wrote: > > > > I'm not very good at this, but the following works for me. If you this > > is in general vicinity of what you expected, I can email patch > > properly. > > > > Thanks for the patch, I can confirm it works. I had this problem today > when playing > with gvisor. Gvisor is starting up in a fresh mount namespace and perf fails > to read the symbols. Stracing perf shows: > > 11913 openat(AT_FDCWD, "/proc/9512/ns/mnt", O_RDONLY) = 197 > 11913 setns(197, CLONE_NEWNS) = 0 > 11913 stat("/home/marek/bin/runsc-debug", 0x7fffffff8480) = -1 ENOENT > (No such file or directory) > 11913 setns(196, CLONE_NEWNS) = 0 > > Which of course makes no sense - the runsc-debug binary does not exist in the > empty mount namespace of the restricted runsc process.
hi, could you guys please share more details on what you run exactly, and perhaps that change you mentioned?
thanks, jirka
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