Date: Sun, 29 Jan 2012 19:30:15 GMT From: Stefan Krueger <stadtkind2@gmx.de> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/164565: kernel crash when kldunload'ing padlock Message-ID: <201201291930.q0TJUFhN001256@freefall.freebsd.org>
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The following reply was made to PR kern/164565; it has been noted by GNATS. From: Stefan Krueger <stadtkind2@gmx.de> To: bug-followup@FreeBSD.org Cc: Patrick Lamaiziere <patfbsd@davenulle.org> Subject: Re: misc/164565: kernel crash when kldunload'ing padlock Date: Sun, 29 Jan 2012 20:23:20 +0100 > > Unloading the padlock kernel module makes the kernel crash. > Do you have a panic or there is just a crash without information? > If it panics, a back trace would be helpful, see > http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html > Are you using padlock (ipsec?) when unloading? > Regards. Hi Patrick, thanks for fast reply. I get a backtrace indeed: # kldunload padlock panic: rw lock 0xfffffe00019a2698 not unlocked cpuid = 0 KDB: stack backtrace: #0 0xffffffff8049822e at kdb_backtrace+0x5e #1 0xffffffff80460d57 at panic+0x187 #2 0xffffffff8045fa84 at rw_destroy+0x34 #3 0xffffffff80baa848 at padlock_detach+0x108 #4 0xffffffff804919e4 at device_detach+0x94 #5 0xffffffff80491c80 at devclass_driver_deleted+0x70 #6 0xffffffff80491da1 at devclass_delete_driver+0x51 #7 0xffffffff80491fad at driver_module_handler+0x14d #8 0xffffffff8044fc05 at module_unload+0x35 #9 0xffffffff8044592b at linker_file_unload+0x16b #10 0xffffffff80446513 at kern_kldunload+0xf3 #11 0xffffffff8063eea3 at amd64_syscall+0x313 #12 0xffffffff80629f07 at Xfast_syscall+0xf7 Uptime: 31s Automatic reboot in 15 seconds - press a key on the console to abort Padlock is not in use (i.e. I netbooted a freebsd 9.0 kernel into single-user, so no IPSEC, no GELI, no nothing at that point) I'm pretty sure I could get a crashdump if you need one. Regards
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