Date: Sun, 19 Mar 2006 02:08:02 GMT From: Jason Harmening <jason.harmening@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/94669: Panic from Failed Removable Media Mount Message-ID: <200603190208.k2J282P8062604@www.freebsd.org> Resent-Message-ID: <200603190210.k2J2AAdT034945@freefall.freebsd.org>
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>Number: 94669 >Category: kern >Synopsis: Panic from Failed Removable Media Mount >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Mar 19 02:10:10 GMT 2006 >Closed-Date: >Last-Modified: >Originator: Jason Harmening >Release: 6.1-BETA4 >Organization: >Environment: reeBSD CORONA.austin.rr.com 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #4: Sat Mar 18 18:40:52 CST 2006 root@:/usr/obj/usr/src/sys/CUSTOM_DBG amd64 >Description: Received the following kernel panic when trying to mount DVD-RAM: CORONA% mount /dev/acd0 /home/jason/dvdram g_vfs_done():acd0[READ(offset=114688, length=16384)]error = 5 panic: mount: lost mount cpuid = 0 KDB: stack backtrace: kdb_backtrace() at kdb_backtrace+0x37 panic() at panic+0x1d1 vfs_domount() at vfs_domount+0x9ae vfs_donmount() at vfs_donmount+0x400 kernel_mount() at kernel_mount+0x40 ffs_cmount() at ffs_cmount+0x7c mount() at mount+0x1e3 syscall() at syscall+0x3a4 Xfast_syscall() at Xfast_syscall+0xa8 --- syscall (21, FreeBSD ELF64, mount), rip = 0x80067e0dc, rsp = 0x7fffffffdc88, rbp = 0x7fffffffe748 --- Uptime: 1m34s Dumping 1023 MB (2 chunks) This may very well be a bad hardware/bad media issue. If so, the OS should at least handle failed removable media mounts in a more elegant way than just panicking. If not, it is a serious bug that should be fixed as soon as possible. System is 6.1-BETA4/amd64 SMP. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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