kern/130330: [mpt] [panic] Panic and reboot machine MPT driver when raid is Degraded.

[Yasuo Yokoyama/横山泰夫]

The following reply was made to PR kern/130330; it has been noted by GNATS.

From: =?ISO-2022-JP?B?WWFzdW8gWW9rb3lhbWEvGyRCMiM7M0JZSVcbKEI=?=
 <jorsef at jorsef.jp>
To: bug-followup at FreeBSD.org, siedar at nplay.pl
Cc:  
Subject: Re: kern/130330: [mpt] [panic] Panic and reboot machine MPT driver
 when raid is Degraded. 
Date: Wed, 25 Mar 2009 13:31:27 +0900

 It is happen on last RELING_7.
 
 FreeBSD 7.2-PRERELEASE #1: Tue Mar 24 19:01:04 JST 2009
 mpt0: <LSILogic SAS/SATA Adapter> port 0xec00-0xecff mem
 0xdfcec000-0xdfceffff,0xdfcf0000-0xdfcfffff irq 16 at device 0.0 on pci5
 mpt0: MPI Version=1.5.14.0
 
 # kgdb /boot/kernel/kernel vmcore.3
 GNU gdb 6.1.1 [FreeBSD]
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 This GDB was configured as "i386-marcel-freebsd"...
 
 Unread portion of the kernel message buffer:
 mpt0: mpt_cam_event: 0x13
 mpt0: mpt_cam_event: 0x16
 (mpt0:vol0:1): Physical Disk Status Changed
 mpt0: mpt_cam_event: 0x15
 mpt0: mpt_cam_event: 0x21
 (mpt0:vol0:1): Physical Disk Status Changed
 mpt0:vol0(mpt0:0:0): Volume Status Changed
 mpt0: mpt_cam_event: 0x15
 mpt0: mpt_cam_event: 0x21
 mpt0: mpt_cam_event: 0x15
 mpt0: mpt_cam_event: 0x21
 
 mpt0:vol0(mpt0:0:0): RAID-1 - Degraded
 mpt0:vol0(mpt0:0:0): Status ( Enabled )
 (mpt0:vol0:1): No longer configured
 
 
 Fatal trap 12: page fault while in kernel mode
 cpuid = 0; apic id = 00
 fault virtual address   = 0x14
 fault code              = supervisor read, page not present
 instruction pointer     = 0x20:0xc046f6cb
 stack pointer           = 0x28:0xc2ef9b80
 frame pointer           = 0x28:0xc2ef9b9c
 code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, def32 1, gran 1
 processor eflags        = interrupt enabled, resume, IOPL = 0
 current process         = 17 (swi2: cambio)
 trap number             = 12
 panic: page fault
 cpuid = 0
 Uptime: 11m43s
 Physical memory: 494 MB
 Dumping 41 MB: 26 10
 Reading symbols from /boot/kernel/acpi.ko...Reading symbols from
 /boot/kernel/acpi.ko.symbols...done.
 done.
 Loaded symbols for /boot/kernel/acpi.ko
 
 Current language:  auto; currently c
 (kgdb) where
 #0  doadump () at pcpu.h:196
 #1  0xc07e2987 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
 #2  0xc07e2c59 in panic (fmt=Variable "fmt" is not available.
 ) at /usr/src/sys/kern/kern_shutdown.c:574
 #3  0xc0ae059c in trap_fatal (frame=0xc2ef9b40, eva=20)
     at /usr/src/sys/i386/i386/trap.c:939
 #4  0xc0ae0820 in trap_pfault (frame=0xc2ef9b40, usermode=0, eva=20)
     at /usr/src/sys/i386/i386/trap.c:852
 #5  0xc0ae11cc in trap (frame=0xc2ef9b40) at
 /usr/src/sys/i386/i386/trap.c:530
 #6  0xc0ac58ab in calltrap () at /usr/src/sys/i386/i386/exception.s:159
 #7  0xc046f6cb in xpt_done (done_ccb=0xc337c800)
     at /usr/src/sys/cam/cam_xpt.c:4794
 #8  0xc0473519 in xpt_scan_bus (periph=0xc3185d80, request_ccb=0xc337c800)
     at /usr/src/sys/cam/cam_xpt.c:5358
 #9  0xc04717f1 in camisr_runqueue (V_queue=Variable "V_queue" is not
 available.
 ) at /usr/src/sys/cam/cam_xpt.c:7319
 #10 0xc047194e in camisr (dummy=0x0) at /usr/src/sys/cam/cam_xpt.c:7222
 #11 0xc07c08eb in ithread_loop (arg=0xc3137c30)
     at /usr/src/sys/kern/kern_intr.c:1088
 #12 0xc07bd439 in fork_exit (callout=0xc07c0730 <ithread_loop>,
     arg=0xc3137c30, frame=0xc2ef9d38) at /usr/src/sys/kern/kern_fork.c:810
 #13 0xc0ac5920 in fork_trampoline () at
 /usr/src/sys/i386/i386/exception.s:264
 
 (kgdb) list
 4789            if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
 4790                    /*
 4791                     * Queue up the request for handling by our SWI
 handler
 4792                     * any of the "non-immediate" type of ccbs.
 4793                     */
 4794                    sim = done_ccb->ccb_h.path->bus->sim;
 4795                    switch (done_ccb->ccb_h.path->periph->type) {
 4796                    case CAM_PERIPH_BIO:
 4797                            TAILQ_INSERT_TAIL(&sim->sim_doneq,
 &done_ccb->ccb_h,
 4798                                              sim_links.tqe);
 
 (kgdb) print *done_ccb->ccb_h.path
 $2 = {periph = 0xc3185d80, bus = 0x0, target = 0x0, device = 0x0}