> Date: Wed, 29 Jul 2020 23:01:15 +1000 > From: Jonathan Gray <j...@jsg.id.au> > > On Wed, Jul 29, 2020 at 02:05:18PM +0200, Andre Stoebe wrote: > > >Synopsis: Panic on boot with Hyper-V since Jun 17 snapshot > > >Category: kernel > > >Environment: > > System : OpenBSD 6.7 > > Details : OpenBSD 6.7-current (GENERIC.MP) #375: Sun Jul 26 > > 11:26:37 MDT 2020 > > > > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > > > Architecture: OpenBSD.amd64 > > Machine : amd64 > > >Description: > > Booting -current on Hyper-V with hvn(4) results in a panic after > > "starting network". > > > > This seems to only affect the multi-user boot; hvn(4) still > > works flawlessly on the ramdisk. > > > > Last working snapshot: > > OpenBSD 6.7-current (GENERIC.MP) #273: Mon Jun 15 19:13:12 MDT 2020 > > > > First non-working snapshot: > > OpenBSD 6.7-current (GENERIC.MP) #278: Wed Jun 17 12:18:35 MDT 2020 > > > > Below is the serial output including ddb trace and ps. > > >How-To-Repeat: > > Boot OpenBSD-current on Hyper-V with a hvn(4) network adapter. > > >Fix: > > Unknown. As a workaround, disabling hvn(4) via "boot -c" does > > not result in a panic. > > more fallout of intr_barrier() now using the argument
The change doesn't make an awful lot of sense though. Just like the current code doesn't make any sense since the driver doesn't do interrupts. It is unclear to me what the call is trying to achive. My guess would be that if anything needs to be done here it is flushing any pending work associated with the channel. Which would imply a taskq_barrier() on the task associated with the channel. > Index: sys/dev/pv/if_hvn.c > =================================================================== > RCS file: /cvs/src/sys/dev/pv/if_hvn.c,v > retrieving revision 1.41 > diff -u -p -r1.41 if_hvn.c > --- sys/dev/pv/if_hvn.c 10 Jul 2020 13:26:40 -0000 1.41 > +++ sys/dev/pv/if_hvn.c 29 Jul 2020 12:52:09 -0000 > @@ -451,7 +451,7 @@ hvn_stop(struct hvn_softc *sc) > } > > ifq_barrier(&ifp->if_snd); > - intr_barrier(sc->sc_chan); > + sched_barrier(NULL); > > ifq_clr_oactive(&ifp->if_snd); > } > > > > > NOTE: random seed is being reused. > > booting hd0a:/bsd: 14390600+3171336+344096+0+872448 > > [968918+128+1133640+857287]=0x14bde68 > > entry point at 0xffffffff81001000 > > [ using 2961000 bytes of bsd ELF symbol table ] > > Copyright (c) 1982, 1986, 1989, 1991, 1993 > > The Regents of the University of California. All rights reserved. > > Copyright (c) 1995-2020 OpenBSD. All rights reserved. > > https://www.OpenBSD.org > > > > OpenBSD 6.7-current (GENERIC.MP) #278: Wed Jun 17 12:18:35 MDT 2020 > > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > real mem = 4278124544 (4079MB) > > avail mem = 4133519360 (3942MB) > > random: good seed from bootblocks > > mpath0 at root > > scsibus0 at mpath0: 256 targets > > mainbus0 at root > > bios0 at mainbus0: SMBIOS rev. 2.3 @ 0xf93d0 (338 entries) > > bios0: vendor American Megatrends Inc. version "090008" date 12/07/2018 > > bios0: Microsoft Corporation Virtual Machine > > acpi0 at bios0: ACPI 2.0 > > acpi0: sleep states S0 S5 > > acpi0: tables DSDT FACP WAET SLIC OEM0 SRAT APIC OEMB > > acpi0: wakeup devices > > acpitimer0 at acpi0: 3579545 Hz, 32 bits > > acpihve0 at acpi0 > > acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat > > ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins, remapped > > cpu0 at mainbus0: apid 0 (boot processor) > > cpu0: Intel(R) Xeon(R) CPU E3-1245 v5 @ 3.50GHz, 2770.10 MHz, 06-5e-03 > > cpu0: > > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN > > cpu0: 256KB 64b/line 8-way L2 cache > > cpu0: smt 0, core 0, package 0 > > mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges > > cpu0: apic clock running at 166MHz > > cpu1 at mainbus0: apid 1 (application processor) > > cpu1: Intel(R) Xeon(R) CPU E3-1245 v5 @ 3.50GHz, 2910.06 MHz, 06-5e-03 > > cpu1: > > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN > > cpu1: 256KB 64b/line 8-way L2 cache > > cpu1: smt 0, core 1, package 0 > > cpu2 at mainbus0: apid 2 (application processor) > > cpu2: Intel(R) Xeon(R) CPU E3-1245 v5 @ 3.50GHz, 2910.09 MHz, 06-5e-03 > > cpu2: > > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN > > cpu2: 256KB 64b/line 8-way L2 cache > > cpu2: smt 0, core 2, package 0 > > cpu3 at mainbus0: apid 3 (application processor) > > cpu3: Intel(R) Xeon(R) CPU E3-1245 v5 @ 3.50GHz, 2910.11 MHz, 06-5e-03 > > cpu3: > > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN > > cpu3: 256KB 64b/line 8-way L2 cache > > cpu3: smt 0, core 3, package 0 > > acpiprt0 at acpi0: bus 0 (PCI0) > > acpicpu0 at acpi0: C1(@1 halt!) > > acpicpu1 at acpi0: C1(@1 halt!) > > acpicpu2 at acpi0: C1(@1 halt!) > > acpicpu3 at acpi0: C1(@1 halt!) > > acpipci0 at acpi0 PCI0 > > extent `acpipci0 pcibus' (0x0 - 0xff), flags=0 > > extent `pciio' (0x0 - 0xffffffff), flags=0 > > 0x10000 - 0xffffffff > > extent `pcimem' (0x0 - 0xffffffffffffffff), flags=0 > > 0x0 - 0xf7ffffff > > 0x40000000000 - 0xffffffffffffffff > > acpicmos0 at acpi0 > > "VMBus" at acpi0 not configured > > "Hyper_V_Gen_Counter_V1" at acpi0 not configured > > cpu0: using VERW MDS workaround (except on vmm entry) > > pvbus0 at mainbus0: Hyper-V 10.0 > > hyperv0 at pvbus0: protocol 4.0, features 0x2e7f > > hyperv0: heartbeat, kvp, shutdown, timesync > > hvs0 at hyperv0 channel 2: ide, protocol 6.2 > > scsibus1 at hvs0: 2 targets > > sd0 at scsibus1 targ 0 lun 0: <Msft, Virtual Disk, 1.0> > > naa.600224802050cb43ae008c0f97857048 > > sd0: 65536MB, 512 bytes/sector, 134217728 sectors, thin > > hvs1 at hyperv0 channel 15: scsi, protocol 6.2 > > scsibus2 at hvs1: 2 targets > > hvn0 at hyperv0 channel 16: NVS 5.0 NDIS 6.30, address 00:15:5d:9a:72:2f > > pci0 at mainbus0 bus 0 > > pchb0 at pci0 dev 0 function 0 "Intel 82443BX" rev 0x03 > > pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x01 > > pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel > > 0 wired to compatibility, channel 1 wired to compatibility > > pciide0: channel 0 disabled (no drives) > > atapiscsi0 at pciide0 channel 1 drive 0 > > scsibus3 at atapiscsi0: 2 targets > > cd0 at scsibus3 targ 0 lun 0: <Msft, Virtual CD/ROM, 1.0> removable > > cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 > > piixpm0 at pci0 dev 7 function 3 "Intel 82371AB Power" rev 0x02: SMBus > > disabled > > vga1 at pci0 dev 8 function 0 "Microsoft VGA" rev 0x00 > > wsdisplay at vga1 not configured > > isa0 at pcib0 > > isadma0 at isa0 > > fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 > > com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo > > com0: console > > com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo > > pckbc0 at isa0 port 0x60/5 irq 1 irq 12 > > pckbd0 at pckbc0 (kbd slot) > > wskbd0 at pckbd0 mux 1 > > pms0 at pckbc0 (aux slot) > > wsmouse0 at pms0 mux 0 > > pcppi0 at isa0 port 0x61 > > spkr0 at pcppi0 > > vscsi0 at root > > scsibus4 at vscsi0: 256 targets > > softraid0 at root > > scsibus5 at softraid0: 256 targets > > root on sd0a (1d6b6b3c33ab37de.a) swap on sd0b dump on sd0b > > WARNING: / was not properly unmounted > > fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec > > Automatic boot in progress: starting file system checks. > > /dev/sd0a (1d6b6b3c33ab37de.a): FREE BLK COUNT(S) WRONG IN SUPERBLK > > (SALVAGED) > > /dev/sd0a (1d6b6b3c33ab37de.a): SUMMARY INFORMATION BAD (SALVAGED) > > /dev/sd0a (1d6b6fd1 at fdc0 drive 1: density unknown > > b3c33ab37de.a): BLK(S) MISSING IN BIT MAPS (SALVAGED) > > /dev/sd0a (1d6b6b3c33ab37de.a): 16631 files, 246111 used, 268328 free (192 > > frags, 33517 blocks, 0.0% fragmentation) > > /dev/sd0a (1d6b6b3c33ab37de.a): MARKING FILE SYSTEM CLEAN > > /dev/sd0k (1d6b6b3c33ab37de.k): 2 files, 2 used, 13167524 free (20 frags, > > 1645938 blocks, 0.0% fragmentation) > > /dev/sd0k (1d6b6b3c33ab37de.k): MARKING FILE SYSTEM CLEAN > > /dev/sd0d (1d6b6b3c33ab37de.d): INCORRECT BLOCK COUNT I=3 (4 should be 0) > > (CORRECTED) > > /dev/sd0d (1d6b6b3c33ab37de.d): UNREF FILE I=3 OWNER=root MODE=100600 > > /dev/sd0d: SIZE=0 MTIME=Jul 29 10:20 2020 (CLEARED) > > /dev/sd0d (1d6b6b3c33ab37de.d): 6 files, 5 used, 2062690 free (42 frags, > > 257831 blocks, 0.0% fragmentation) > > /dev/sd0d (1d6b6b3c33ab37de.d): MARKING FILE SYSTEM CLEAN > > /dev/sd0f (1d6b6b3c33ab37de.f): 224680 files, 1157145 used, 389470 free > > (39678 frags, 43724 blocks, 2.6% fragmentation) > > /dev/sd0f (1d6b6b3c33ab37de.f): MARKING FILE SYSTEM CLEAN > > /dev/sd0g (1d6b6b3c33ab37de.g): 9160 files, 110467 used, 403972 free (7404 > > frags, 49571 blocks, 1.4% fragmentation) > > /dev/sd0g (1d6b6b3c33ab37de.g): MARKING FILE SYSTEM CLEAN > > /dev/sd0h (1d6b6b3c33ab37de.h): 13178 files, 260424 used, 4393111 free > > (6287 frags, 548353 blocks, 0.1% fragmentation) > > /dev/sd0h (1d6b6b3c33ab37de.h): MARKING FILE SYSTEM CLEAN > > /dev/sd0j (1d6b6b3c33ab37de.j): 3484 files, 186521 used, 2908358 free (582 > > frags, 363472 blocks, 0.0% fragmentation) > > /dev/sd0j (1d6b6b3c33ab37de.j): MARKING FILE SYSTEM CLEAN > > /dev/sd0i (1d6b6b3c33ab37de.i): 138604 files, 620123 used, 410404 free > > (1612 frags, 51099 blocks, 0.2% fragmentation) > > /dev/sd0i (1d6b6b3c33ab37de.i): MARKING FILE SYSTEM CLEAN > > /dev/sd0e (1d6b6b3c33ab37de.e): FREE BLK COUNT(S) WRONG IN SUPERBLK > > (SALVAGED) > > /dev/sd0e (1d6b6b3c33ab37de.e): SUMMARY INFORMATION BAD (SALVAGED) > > /dev/sd0e (1d6b6b3c33ab37de.e): BLK(S) MISSING IN BIT MAPS (SALVAGED) > > /dev/sd0e (1d6b6b3c33ab37de.e): 561 files, 6789 used, 3619194 free (274 > > frags, 452365 blocks, 0.0% fragmentation) > > /dev/sd0e (1d6b6b3c33ab37de.e): MARKING FILE SYSTEM CLEAN > > kbd: keyboard mapping set to de > > pf enabled > > starting network > > kernel: protection fault trap, code=0 > > Stopped at setrunqueue+0xa2: addl $0x1,0x288(%r13) > > ddb{0}> trace > > setrunqueue(4632e58d2632e1b7,ffff8000235e79c0,32) at setrunqueue+0xa2 > > sched_barrier_task(ffff80002367a858) at sched_barrier_task+0x6c > > taskq_thread(ffffffff820e01e0) at taskq_thread+0x8d > > end trace frame: 0x0, count: -3 > > ddb{0}> machine ddbcpu 1 > > Stopped at x86_ipi_db+0x12: leave > > ddb{1}> trace > > x86_ipi_db(ffff800022415ff0) at x86_ipi_db+0x12 > > x86_ipi_handler() at x86_ipi_handler+0x80 > > Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 > > acpicpu_idle() at acpicpu_idle+0x271 > > sched_idle(ffff800022415ff0) at sched_idle+0x225 > > end trace frame: 0x0, count: -5 > > ddb{1}> machine ddbcpu 2 > > Stopped at x86_ipi_db+0x12: leave > > ddb{2}> trace > > x86_ipi_db(ffff800022426ff0) at x86_ipi_db+0x12 > > x86_ipi_handler() at x86_ipi_handler+0x80 > > Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 > > acpicpu_idle() at acpicpu_idle+0x271 > > sched_idle(ffff800022426ff0) at sched_idle+0x225 > > end trace frame: 0x0, count: -5 > > ddb{2}> machine ddbcpu 3 > > Stopped at x86_ipi_db+0x12: leave > > ddb{3}> trace > > x86_ipi_db(ffff80002242fff0) at x86_ipi_db+0x12 > > x86_ipi_handler() at x86_ipi_handler+0x80 > > Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 > > acpicpu_idle() at acpicpu_idle+0x271 > > sched_idle(ffff80002242fff0) at sched_idle+0x225 > > end trace frame: 0x0, count: -5 > > ddb{3}> ps > > PID TID PPID UID S FLAGS WAIT COMMAND > > 16940 381953 2194 0 3 0x3 sbar ifconfig > > 2194 467874 88209 0 3 0x10008b pause sh > > 27795 175339 15600 115 3 0x100092 kqread slaacd > > 1268 460749 15600 115 3 0x100092 kqread slaacd > > 15600 87558 1 0 3 0x100080 kqread slaacd > > 75508 331379 15064 0 3 0x100083 nanosleep sleep > > 15064 228406 1 0 3 0x100089 pause ksh > > 88209 267771 1 0 3 0x10008b pause sh > > 29800 381335 0 0 3 0x14200 bored smr > > 13503 94478 0 0 3 0x14200 pgzero zerothread > > 89041 215522 0 0 3 0x14200 aiodoned aiodoned > > 46332 915 0 0 3 0x14200 syncer update > > 20152 396910 0 0 3 0x14200 cleaner cleaner > > 54251 296627 0 0 3 0x14200 reaper reaper > > 66847 188480 0 0 3 0x14200 pgdaemon pagedaemon > > 78063 276360 0 0 3 0x14200 bored crynlk > > 25507 271821 0 0 3 0x14200 bored crypto > > 80421 84867 0 0 3 0x14200 bored hvs1 > > 57199 382476 0 0 3 0x14200 bored hvs0 > > 50781 12321 0 0 3 0x40014200 acpi0 acpi0 > > *99819 420836 0 0 7 0x40014200 idle3 > > 82224 107227 0 0 7 0x40014200 idle2 > > 36175 478289 0 0 7 0x40014200 idle1 > > 8587 296045 0 0 3 0x14200 bored softnet > > kernel: protection fault trap, code=0 > > Faulted in DDB; continuing... > > > > > >
