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From jruohone@gmail.com Sun Jul 3 07:33:36 2011
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Message-Id: <20110703073331.44F4256C5@marx.bitnet>
Date: Sun, 3 Jul 2011 10:33:31 +0300 (EEST)
From: Jukka Ruohonen <jruohonen@iki.fi>
Sender: a b <jruohone@gmail.com>
Reply-To: jruohonen@iki.fi
To: gnats-bugs@gnats.NetBSD.org
Subject: tmpfs panic with mknod(2)
X-Send-Pr-Version: 3.95
>Number: 45111
>Category: kern
>Synopsis: tmpfs panic with mknod(2)
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: kern-bug-people
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Jul 03 07:35:00 +0000 2011
>Closed-Date: Thu Jul 07 07:33:41 +0000 2011
>Last-Modified: Thu Jul 07 07:33:41 +0000 2011
>Originator: Jukka Ruohonen
>Release: NetBSD 5.99.54
>Organization:
none
>Environment:
>Description:
Using the mknod(2) syscall triggers a panic with tmpfs:
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x27f
kern_assert() at netbsd:kern_assert+0x2d
tmpfs_alloc_node() at netbsd:tmpfs_alloc_node+0x2fa
tmpfs_alloc_file() at netbsd:tmpfs_alloc_file+0x13a
VOP_MKNOD( at netbsd:VOP_MKNOD+0x84
do_sys_mknod() at netbsd:do_sys_mknod+0x1f1
syscall() at netbsd:syscall+0xaa
The assertion is:
panic:kernel diagnostic assertion "rdev != VNOVAL" failed: file
"/usr/src/sys/fs/tmpfs/tmpfs_subr.c", line 151
>How-To-Repeat:
The following program reliably triggers the assertion when /tmp is on tmpfs:
#include <sys/stat.h>
#include <unistd.h>
int
main(void)
{
(void)mknod("/tmp/panic", S_IFCHR, -1);
return 0;
}
>Fix:
Yes please.
>Release-Note:
>Audit-Trail:
From: "Jukka Ruohonen" <jruoho@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc:
Subject: PR/45111 CVS commit: src
Date: Sun, 3 Jul 2011 14:34:22 +0000
Module Name: src
Committed By: jruoho
Date: Sun Jul 3 14:34:22 UTC 2011
Modified Files:
src/distrib/sets/lists/tests: mi
src/tests/syscall: Makefile
Added Files:
src/tests/syscall: t_mknod.c
Log Message:
Few simple tests for mknod(2), including a skipped one for PR kern/45111.
To generate a diff of this commit:
cvs rdiff -u -r1.355 -r1.356 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.33 -r1.34 src/tests/syscall/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/syscall/t_mknod.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
From: "Juergen Hannken-Illjes" <hannken@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc:
Subject: PR/45111 CVS commit: src/sys/kern
Date: Sun, 3 Jul 2011 15:25:10 +0000
Module Name: src
Committed By: hannken
Date: Sun Jul 3 15:25:09 UTC 2011
Modified Files:
src/sys/kern: vfs_syscalls.c
Log Message:
Return EINVAL when trying to create a device node with "rdev == VNOVAL".
Fixes PR #45111 "tmpfs panic with mknod(2)".
To generate a diff of this commit:
cvs rdiff -u -r1.430 -r1.431 src/sys/kern/vfs_syscalls.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
State-Changed-From-To: open->closed
State-Changed-By: jruoho@NetBSD.org
State-Changed-When: Thu, 07 Jul 2011 07:33:41 +0000
State-Changed-Why:
This was fixed, thanks.
>Unformatted:
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