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kern/47226: KASSERT while running t_faccessat on tmpfs mount

>Number:         47226
>Category:       kern
>Synopsis:       KASSERT while running t_faccessat on tmpfs
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Nov 21 10:25:00 +0000 2012
>Originator:     Nicolas Joly
>Release:        NetBSD 6.99.15
Institut Pasteur, Paris.
System: NetBSD 6.99.15 NetBSD 6.99.15 (LYNCHE) #2: Tue 
Nov 20 15:27:15 CET 2012
Architecture: x86_64
Machine: amd64
Running new *at testcase using a tmpfs mount for /tmp makes the kernel
panic with a KASSERT ...

panic: kernel diagnostic assertion "VOP_ISLOCKED(vp)" failed: file 
"/local/src/NetBSD/src/sys/fs/tmpfs/tmpfs_vnops.c", line 402 
cpu0: Begin traceback...
kern_assert() at netbsd:kern_assert+0x48
tmpfs_access() at netbsd:tmpfs_access+0x15f
VOP_ACCESS() at netbsd:VOP_ACCESS+0x33
fd_nameiat() at netbsd:fd_nameiat+0x75
do_sys_accessat() at netbsd:do_sys_accessat+0xc0
syscall() at netbsd:syscall+0x94
--- syscall (number 462) ---
cpu0: End traceback...

Use tmpfs mount for /tmp
cd /usr/tests/lib/libc/c063
atf-run | atf-report

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