[Bug 235081] [scsi_cd]: panic with unreliable USB cable in r343190

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235081

Andriy Gapon <avg at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ken at FreeBSD.org

--- Comment #5 from Andriy Gapon <avg at FreeBSD.org> ---
TLDR version of the panic:

Feb  1 05:06:34 ThinkPad-X220 kernel: cd0 at umass-sim0 bus 0 scbus4 target 0
lun 0
Feb  1 05:06:34 ThinkPad-X220 kernel: cd0: <Linux File-CD Gadget 0310> 
detached
...
Feb  1 05:08:03 ThinkPad-X220 kernel: Fatal trap 9: general protection fault
while in kernel mode
Feb  1 05:08:03 ThinkPad-X220 kernel: cpuid = 3; apic id = 03
Feb  1 05:08:03 ThinkPad-X220 kernel: instruction pointer       =
0x20:0xffffffff8053052f
Feb  1 05:08:03 ThinkPad-X220 kernel: stack pointer             =
0x28:0xfffffe0000546470
Feb  1 05:08:03 ThinkPad-X220 kernel: frame pointer             =
0x28:0xfffffe0000546490
Feb  1 05:08:03 ThinkPad-X220 kernel: code segment              = base 0x0,
limit 0xfffff, type 0x1b
Feb  1 05:08:03 ThinkPad-X220 kernel:                   = DPL 0, pres 1, long
1, def32 0, gran 1
Feb  1 05:08:03 ThinkPad-X220 kernel: processor eflags  = interrupt enabled,
resume, IOPL = 0
Feb  1 05:08:03 ThinkPad-X220 kernel: current process           = 7 (doneq0)
...
Feb  1 05:08:03 ThinkPad-X220 kernel: --- trap 0x9, rip = 0xffffffff8053052f,
rsp = 0xfffffe0000546470, rbp = 0xfffffe0000546490 ---
Feb  1 05:08:03 ThinkPad-X220 kernel: bioq_flush() at bioq_flush+0x5f/frame
0xfffffe0000546490
Feb  1 05:08:03 ThinkPad-X220 kernel: cddone() at cddone+0x4fe/frame
0xfffffe00005469e0
Feb  1 05:08:03 ThinkPad-X220 kernel: xpt_done_process() at
xpt_done_process+0x35f/frame 0xfffffe0000546a20

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