Date: Mon, 21 Apr 2008 11:25:39 GMT From: Dominic Fandrey <kamikaze@bsdforen.de> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/122961: write operation on msdosfs file system causes panic Message-ID: <200804211125.m3LBPdNJ093755@www.freebsd.org> Resent-Message-ID: <200804211130.m3LBU2C8000576@freefall.freebsd.org>
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>Number: 122961 >Category: kern >Synopsis: write operation on msdosfs file system causes panic >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Apr 21 11:30:02 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Dominic Fandrey >Release: RELENG_7 >Organization: private >Environment: FreeBSD mobileKamikaze.norad 7.0-STABLE FreeBSD 7.0-STABLE #0: Sat Apr 19 01:05:43 CEST 2008 root@mobileKamikaze.norad:/usr/obj/HP6510b/amd64/usr/src/sys/HP6510b amd64 >Description: Trying to copy files to an msdosfs file system on a USB stick causes the system to panic. This is reproducible, the backtrace always looks the same. Unread portion of the kernel message buffer: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xe fault code = supervisor write data, page not present instruction pointer = 0x8:0xffffff00705ba1f0 stack pointer = 0x10:0xffffffffaf0fe2e0 frame pointer = 0x10:0xffffffffaf0fe390 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 2047 (cp) trap number = 12 panic: page fault cpuid = 0 Uptime: 13m32s Physical memory: 2030 MB Dumping 209 MB: 194 178 162 146 130 114 98 82 66 50 34 18 2 #0 doadump () at pcpu.h:194 194 pcpu.h: No such file or directory. in pcpu.h (kgdb) bt #0 doadump () at pcpu.h:194 #1 0x0000000000000004 in ?? () #2 0xffffffff801ff9c1 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418 #3 0xffffffff801ffdf2 in panic (fmt=0x104 <Address 0x104 out of bounds>) at /usr/src/sys/kern/kern_shutdown.c:572 #4 0xffffffff803dbe8a in trap_fatal (frame=0xffffff0001ff46a0, eva=18446742974281863168) at /usr/src/sys/amd64/amd64/trap.c:724 #5 0xffffffff803dc231 in trap_pfault (frame=0xffffffffaf0fe230, usermode=0) at /usr/src/sys/amd64/amd64/trap.c:641 #6 0xffffffff803dcaef in trap (frame=0xffffffffaf0fe230) at /usr/src/sys/amd64/amd64/trap.c:410 #7 0xffffffff803c392e in calltrap () at /usr/src/sys/amd64/amd64/exception.S:169 #8 0xffffff00705ba1f0 in ?? () #9 0x00000009802813e4 in ?? () #10 0xffffff00705ba1f0 in ?? () #11 0xffffff0001ff46a0 in ?? () #12 0xffffff0005659700 in ?? () #13 0xffffffffaf0fe4e0 in ?? () #14 0x0000000000003041 in ?? () #15 0xffffff0001ff46a0 in ?? () #16 0xffffffff80416924 in cdrom_rootdevnames () ---Type <return> to continue, or q <return> to quit--- #17 0x000000000000080e in ?? () #18 0x0000000000000000 in ?? () #19 0xffffff00705ba1f0 in ?? () #20 0x0000000000000000 in ?? () #21 0xffffff007cf86ec8 in ?? () #22 0xffffff0001ff46a0 in ?? () #23 0xffffff0005d5a820 in ?? () #24 0x0000000000009000 in ?? () #25 0xffffff00705ba1f0 in ?? () #26 0xffffffffaf0fe4e0 in ?? () #27 0x0000000000000000 in ?? () #28 0x0000000000000004 in ?? () #29 0xffffffff803bceba in vnode_pager_getpages (object=0xffffff0001ff46a0, m=0x0, count=Variable "count" is not available. ) at vnode_if.h:1129 #30 0xffffffff803a87d0 in vm_fault (map=0xffffff0005b9f000, vaddr=34368442368, fault_type=1 '\001', fault_flags=0) at vm_pager.h:130 #31 0xffffffff803dc0ae in trap_pfault (frame=0xffffffffaf0fe740, usermode=0) at /usr/src/sys/amd64/amd64/trap.c:618 #32 0xffffffff803dcaef in trap (frame=0xffffffffaf0fe740) at /usr/src/sys/amd64/amd64/trap.c:410 #33 0xffffffff803c392e in calltrap () at /usr/src/sys/amd64/amd64/exception.S:169 #34 0xffffffff803db4ed in copyin () at /usr/src/sys/amd64/amd64/support.S:303 ---Type <return> to continue, or q <return> to quit--- #35 0xffffffff802063f7 in uiomove (cp=0xffffffff9bc99000, n=4096, uio=0xffffffffaf0feb10) at /usr/src/sys/kern/kern_subr.c:170 #36 0xffffffff801a5fb2 in msdosfs_write (ap=Variable "ap" is not available. ) at /usr/src/sys/fs/msdosfs/msdosfs_vnops.c:812 #37 0xffffffff803f89ae in VOP_WRITE_APV (vop=0xffffffff805421a0, a=0xffffffffaf0fea20) at vnode_if.c:691 #38 0xffffffff80282797 in vn_write (fp=0xffffff0070379000, uio=0xffffffffaf0feb10, active_cred=Variable "active_cred" is not available. ) at vnode_if.h:373 #39 0xffffffff80233a0f in dofilewrite (td=0xffffff0001ff46a0, fd=4, fp=0xffffff0070379000, auio=0xffffffffaf0feb10, offset=Variable "offset" is not available. ) at file.h:254 #40 0xffffffff80233cbb in kern_writev (td=0xffffff0001ff46a0, fd=4, auio=0xffffffffaf0feb10) at /usr/src/sys/kern/sys_generic.c:401 #41 0xffffffff80233d28 in write (td=Variable "td" is not available. ) at /usr/src/sys/kern/sys_generic.c:317 #42 0xffffffff803dc49c in syscall (frame=0xffffffffaf0fec70) at /usr/src/sys/amd64/amd64/trap.c:852 #43 0xffffffff803c3b3b in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:290 #44 0x000000080070c5bc in ?? () Previous frame inner to this frame (corrupt stack?) (kgdb) >How-To-Repeat: Just write a file on an msdosfs mount. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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