[Bug 210316] panic after trying to r/w mount msdosfs on write protected media

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210316

Andriy Gapon <avg at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |imp at FreeBSD.org,
                   |                            |kib at FreeBSD.org

--- Comment #3 from Andriy Gapon <avg at FreeBSD.org> ---
Another panic of a similar nature:
Fatal trap 9: general protection fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer     = 0x20:0xffffffff80633e06
stack pointer           = 0x28:0xfffffe07169c6240
frame pointer           = 0x28:0xfffffe07169c6290
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         = 14163 (gvfs-hal-volume-mon)
trap number             = 9
panic: general protection fault
cpuid = 1
time = 1498465614
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff80439f4b =
db_trace_self_wrapper+0x2b/frame 0xfffffe07169c5df0
kdb_backtrace() at 0xffffffff8068b369 = kdb_backtrace+0x39/frame
0xfffffe07169c5ea0
vpanic() at 0xffffffff806521f2 = vpanic+0x162/frame 0xfffffe07169c5ee0
panic() at 0xffffffff80651f23 = panic+0x43/frame 0xfffffe07169c5f40
trap_fatal() at 0xffffffff8085a170 = trap_fatal+0x310/frame 0xfffffe07169c5f90
trap() at 0xffffffff80859717 = trap+0x97/frame 0xfffffe07169c6150
trap_check() at 0xffffffff8085a49a = trap_check+0x2a/frame 0xfffffe07169c6170
calltrap() at 0xffffffff80842b1a = calltrap+0x8/frame 0xfffffe07169c6170
--- trap 0x9, rip = 0xffffffff80633e06, rsp = 0xfffffe07169c6240, rbp =
0xfffffe07169c6290 ---
__mtx_lock_flags() at 0xffffffff80633e06 = __mtx_lock_flags+0x46/frame
0xfffffe07169c6290
g_vfs_strategy() at 0xffffffff805cc586 = g_vfs_strategy+0x36/frame
0xfffffe07169c62c0
bstrategy() at 0xffffffff806e4326 = bstrategy+0x26/frame 0xfffffe07169c62d0
bufwrite() at 0xffffffff806e258f = bufwrite+0x1df/frame 0xfffffe07169c6310
bwrite() at 0xffffffff806e51d6 = bwrite+0x26/frame 0xfffffe07169c6320
bawrite() at 0xffffffff806e4cbd = bawrite+0xd/frame 0xfffffe07169c6330
vop_stdfsync() at 0xffffffff806f11b0 = vop_stdfsync+0x1b0/frame
0xfffffe07169c6380
VOP_FSYNC_APV() at 0xffffffff808a4fea = VOP_FSYNC_APV+0xfa/frame
0xfffffe07169c63b0
VOP_FSYNC() at 0xffffffff806e49f8 = VOP_FSYNC+0x28/frame 0xfffffe07169c63e0
bufsync() at 0xffffffff806e2687 = bufsync+0x27/frame 0xfffffe07169c6400
bufobj_invalbuf() at 0xffffffff806fe937 = bufobj_invalbuf+0x287/frame
0xfffffe07169c6460
vinvalbuf() at 0xffffffff806fec1a = vinvalbuf+0x8a/frame 0xfffffe07169c6490
vgonel() at 0xffffffff80701fbe = vgonel+0x16e/frame 0xfffffe07169c64d0
vgone() at 0xffffffff8070236f = vgone+0x2f/frame 0xfffffe07169c64f0
devfs_delete() at 0xffffffff805425ae = devfs_delete+0x15e/frame
0xfffffe07169c6550
devfs_populate_loop() at 0xffffffff80542d4f = devfs_populate_loop+0x3cf/frame
0xfffffe07169c65a0
devfs_populate() at 0xffffffff8054296a = devfs_populate+0x4a/frame
0xfffffe07169c65c0
devfs_populate_vp() at 0xffffffff80546a6e = devfs_populate_vp+0x5e/frame
0xfffffe07169c65f0
devfs_lookup() at 0xffffffff80545636 = devfs_lookup+0x16/frame
0xfffffe07169c6620
VOP_LOOKUP_APV() at 0xffffffff808a2d93 = VOP_LOOKUP_APV+0xf3/frame
0xfffffe07169c6650
VOP_LOOKUP() at 0xffffffff806f5e29 = VOP_LOOKUP+0x29/frame 0xfffffe07169c6680
lookup() at 0xffffffff806f52b8 = lookup+0x3e8/frame 0xfffffe07169c6700
namei() at 0xffffffff806f4b5d = namei+0x3ad/frame 0xfffffe07169c67a0
kern_statat() at 0xffffffff8070b3fb = kern_statat+0x9b/frame 0xfffffe07169c69b0
sys_fstatat() at 0xffffffff8070b7af = sys_fstatat+0x2f/frame 0xfffffe07169c6ab0
syscallenter() at 0xffffffff8085aaf6 = syscallenter+0x316/frame
0xfffffe07169c6b00
amd64_syscall() at 0xffffffff8085a69f = amd64_syscall+0x1f/frame
0xfffffe07169c6bf0
Xfast_syscall() at 0xffffffff80842dfb = Xfast_syscall+0xfb/frame
0xfffffe07169c6bf0
--- syscall (552, FreeBSD ELF64, sys_fstatat), rip = 0x80234f65a, rsp =
0x7fffffffd798, rbp = 0x7fffffffd8e0 ---
Uptime: 3d14h59m16s

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