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* 9P change breaks bpftrace running in qemu+9p?
@ 2025-10-20 17:40 Song Liu
  2025-10-20 18:40 ` Tingmao Wang
  0 siblings, 1 reply; 9+ messages in thread
From: Song Liu @ 2025-10-20 17:40 UTC (permalink / raw)
  To: v9fs, Tingmao Wang
  Cc: Eric Van Hensbergen, Dominique Martinet, Latchesar Ionkov,
	Christian Schoenebeck, Mickaël Salaün, bpf

Hi,

I noticed a new error in the upstream kernel when I run bpftrace with
vmtest [2]:

$ vmtest -k arch/x86/boot/bzImage "bpftrace.real -e
'fexit:cmdline_proc_show {exit();}'"
=> bzImage
===> Booting
===> Setting up VM
===> Running command
[    5.610741] id (178) used greatest stack depth: 11592 bytes left
Parse error: Input/output error
Command failed with exit code: 2
[root@(none) /]#

git bisect points to patch 1/3 of this set [1].

Any idea what is happening here?

Thanks,
Song

[1] https://lore.kernel.org/v9fs/cover.1743956147.git.m@maowtm.org/
[2] https://github.com/danobi/vmtest

^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2025-10-21 22:12 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-10-20 17:40 9P change breaks bpftrace running in qemu+9p? Song Liu
2025-10-20 18:40 ` Tingmao Wang
2025-10-20 19:40   ` Song Liu
2025-10-20 21:32     ` Dominique Martinet
2025-10-20 21:52       ` Song Liu
2025-10-21  0:54         ` Tingmao Wang
2025-10-21  6:49           ` Song Liu
2025-10-21 16:56             ` Alexei Starovoitov
2025-10-21 22:12               ` Dominique Martinet

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