Date: Sun, 3 Feb 2013 04:37:23 GMT From: Garrett Cooper <yaneurabeya@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: bin/175793: modfind(2) doesn't understand modules with underscores Message-ID: <201302030437.r134bNMR046994@red.freebsd.org> Resent-Message-ID: <201302030440.r134e0Xv004408@freefall.freebsd.org>
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>Number: 175793
>Category: bin
>Synopsis: modfind(2) doesn't understand modules with underscores
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Feb 03 04:40:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator: Garrett Cooper
>Release: 9.1-STABLE
>Organization:
EMC Isilon
>Environment:
FreeBSD bayonetta.local 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #0 r+39e5635: Tue Dec 11 08:55:27 PST 2012 gcooper@bayonetta.local:/usr/obj/scratch/git/github/yaneurabeya-freebsd-stable-9/sys/BAYONETTA amd64
>Description:
Tried to use kldstat -m to determine whether or not a networking module is loaded, and FWIW it appears to not work as expected:
$ kldstat
Id Refs Address Size Name
1 30 0xffffffff80200000 91e2d8 kernel
2 1 0xffffffff80b1f000 264378 zfs.ko
3 5 0xffffffff80d84000 25e38 krpc.ko
4 2 0xffffffff80daa000 60d8 opensolaris.ko
5 1 0xffffffff80e12000 7afb aio.ko
6 1 0xffffffff80e1a000 a5bf if_re.ko
7 1 0xffffffff80e25000 303fd nfsd.ko
8 1 0xffffffff80e56000 110b8 nfscommon.ko
9 2 0xffffffff80e68000 3ff nfssvc.ko
10 2 0xffffffff80e69000 faf nfslock.ko
11 1 0xffffffff80e6a000 e235 nfslockd.ko
12 1 0xffffffff80e79000 2860a kqemu.ko
$ kldstat -m if_re
kldstat: can't find module if_re: No such file or directory
$ kldstat -m kqemu
Id Refs Name
198 1 kqemu
$ kldstat -m re
kldstat: can't find module re: No such file or directory
Not sure why, but this code in kern_module appears to be broken, or just doesn't represent data consistent to expectations from the printouts provided by kldstat:
>From kern_module.c:
217 module_t
218 module_lookupbyname(const char *name)
219 {
220 module_t mod;
221 int err;
222
223 MOD_LOCK_ASSERT;
224
225 TAILQ_FOREACH(mod, &modules, link) {
226 err = strcmp(mod->name, name);
227 if (err == 0)
228 return (mod);
229 }
230 return (NULL);
231 }
>From if_re.c:
337 DRIVER_MODULE(re, pci, re_driver, re_devclass, 0, 0);
I've seen similar issues with bge(4) on a work machine, so I don't think it's isolated to re(4)...
>How-To-Repeat:
kldstat -m if_<foo>
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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