https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221501
--- Comment #3 from open.sou...@ribose.com ---
(In reply to Conrad Meyer from comment #1)
# kgdb
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
#0 sched_switch (td=0xfffff80003519000, newtd=0xfffff800032ffa00, flags=<value
optimized out>) at /usr/src/sys/kern/sched_ule.c:1973
1973 cpuid = PCPU_GET(cpuid);
(kgdb) l *(msdosfs_mount+0x10f6)
0xffffffff8098e8f6 is in msdosfs_mount
(/usr/src/sys/fs/msdosfs/msdosfs_vfsops.c:730).
725
726 /*
727 * Have the inuse map filled in.
728 */
729 MSDOSFS_LOCK_MP(pmp);
730 error = fillinusemap(pmp);
731 MSDOSFS_UNLOCK_MP(pmp);
732 if (error != 0)
733 goto error_exit;
734
Current language: auto; currently minimal
(kgdb)
crash backtrace:
# kgdb /boot/kernel/kernel /var/crash/vmcore.0
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
panic: vm_fault: fault on nofault entry, addr: fffffe003d2dd000
cpuid = 0
KDB: stack backtrace:
#0 0xffffffff80b24077 at kdb_backtrace+0x67
#1 0xffffffff80ad93e2 at vpanic+0x182
#2 0xffffffff80ad9253 at panic+0x43
#3 0xffffffff80e12601 at vm_fault_hold+0x2721
#4 0xffffffff80e0fe98 at vm_fault+0x78
#5 0xffffffff80fa0e39 at trap_pfault+0xf9
#6 0xffffffff80fa04cc at trap+0x26c
#7 0xffffffff80f84141 at calltrap+0x8
#8 0xffffffff8098e8f6 at msdosfs_mount+0x10f6
#9 0xffffffff80ba1ae0 at vfs_donmount+0xf90
#10 0xffffffff80ba0b22 at sys_nmount+0x72
#11 0xffffffff80fa168e at amd64_syscall+0x4ce
#12 0xffffffff80f8442b at Xfast_syscall+0xfb
Uptime: 1m38s
Dumping 101 out of 991 MB:..16%..32%..48%..63%..79%..95%
#0 doadump (textdump=<value optimized out>) at pcpu.h:221
221 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) bt
#0 doadump (textdump=<value optimized out>) at pcpu.h:221
#1 0xffffffff80ad8e69 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:366
#2 0xffffffff80ad941b in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759
#3 0xffffffff80ad9253 in panic (fmt=0x0) at
/usr/src/sys/kern/kern_shutdown.c:690
#4 0xffffffff80e12601 in vm_fault_hold (map=<value optimized out>,
vaddr=<value optimized out>, fault_type=<value optimized out>,
fault_flags=<value optimized out>, m_hold=<value optimized out>) at
/usr/src/sys/vm/vm_fault.c:330
#5 0xffffffff80e0fe98 in vm_fault (map=0xfffff80003000000, vaddr=<value
optimized out>, fault_type=1 '\001', fault_flags=<value optimized out>)
at /usr/src/sys/vm/vm_fault.c:273
#6 0xffffffff80fa0e39 in trap_pfault (frame=0xfffffe0000230410, usermode=0) at
/usr/src/sys/amd64/amd64/trap.c:741
#7 0xffffffff80fa04cc in trap (frame=0xfffffe0000230410) at
/usr/src/sys/amd64/amd64/trap.c:442
#8 0xffffffff80f84141 in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:236
#9 0xffffffff8098abdb in fillinusemap (pmp=<value optimized out>) at
/usr/src/sys/fs/msdosfs/msdosfs_fat.c:904
#10 0xffffffff8098e8f6 in msdosfs_mount (mp=0xfffff800038bf000) at
/usr/src/sys/fs/msdosfs/msdosfs_vfsops.c:730
#11 0xffffffff80ba1ae0 in vfs_donmount (td=<value optimized out>,
fsflags=<value optimized out>, fsoptions=<value optimized out>)
at /usr/src/sys/kern/vfs_mount.c:818
#12 0xffffffff80ba0b22 in sys_nmount (td=0xfffff800038cd500,
uap=0xfffffe0000230a40) at /usr/src/sys/kern/vfs_mount.c:417
#13 0xffffffff80fa168e in amd64_syscall (td=<value optimized out>, traced=0) at
subr_syscall.c:135
#14 0xffffffff80f8442b in Xfast_syscall () at
/usr/src/sys/amd64/amd64/exception.S:396
#15 0x0000000800a70f6a in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language: auto; currently minimal
(kgdb)
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