Hi,
When doing flood ping transmit from a machine and simultaneously
ifconfig down/up in a loop, dwqe(4) interface driver crashes.
dwqe_down() contains an interrupt barrier, but somehow it does not
work. Immediately after Xspllower() a transmit interrupt is
processed.
bluhm
kernel: protection fault trap, code=0
Stopped at m_tag_delete_chain+0x30: movq 0(%rsi),%rax
ddb{0}> trace
m_tag_delete_chain(fffffd806bfa5300) at m_tag_delete_chain+0x30
m_free(fffffd806bfa5300) at m_free+0x9e
m_freem(fffffd806bfa5300) at m_freem+0x38
dwqe_tx_proc(ffff800000304800) at dwqe_tx_proc+0x194
dwqe_intr(ffff800000304800) at dwqe_intr+0x9b
intr_handler(ffff80003f86e760,ffff8000005f4f80) at intr_handler+0x72
Xintr_ioapic_edge36_untramp() at Xintr_ioapic_edge36_untramp+0x18f
Xspllower() at Xspllower+0x1d
dwqe_ioctl(ffff800000304870,80206910,ffff80003f86e990) at dwqe_ioctl+0x18c
ifioctl(fffffd81ffabe1e8,80206910,ffff80003f86e990,ffff80003f94e550) at
ifioctl+0x726
sys_ioctl(ffff80003f94e550,ffff80003f86eb50,ffff80003f86eac0) at sys_ioctl+0x2af
syscall(ffff80003f86eb50) at syscall+0x55b
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x73ef48509270, count: -13
ddb{0}> show register
rdi 0xfffffd806bfa5300
rsi 0xdeafbeaddeafbead
rbp 0xffff80003f86e5f0
rbx 0xf40
rdx 0
rcx 0
rax 0xab56 __ALIGN_SIZE+0x9b56
r8 0x90
r9 0x24634ac __kernel_rodata_phys+0x3624ac
r10 0xe676ed611cc13e4f
r11 0xd2619954b795f246
r12 0xffff800001110f48
r13 0xfffffd8072820000
r14 0xfffffd806bfa5300
r15 0xfffffd805f6def00
rip 0xffffffff81daae80 m_tag_delete_chain+0x30
cs 0x8
rflags 0x10282 __ALIGN_SIZE+0xf282
rsp 0xffff80003f86e5d0
ss 0x10
m_tag_delete_chain+0x30: movq 0(%rsi),%rax
ddb{0}> x/s version
version: OpenBSD 7.5 (GENERIC.MP) #2: Thu Feb 29 23:42:26 CET 2024\012
r...@ot50.obsd-lab.genua.de:/usr/src/sys/arch/amd64/compile/GENERIC.MP\012
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*70039 16536 80360 0 7 0x8000003 ifconfig
41531 214934 36719 51 3 0x8100033 netlock ping
OpenBSD 7.5 (GENERIC.MP) #2: Thu Feb 29 23:42:26 CET 2024
r...@ot50.obsd-lab.genua.de:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 8038207488 (7665MB)
avail mem = 7773556736 (7413MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.3 @ 0x769c7000 (85 entries)
bios0: vendor American Megatrends Inc. version "1.02.10" date 06/27/2022
efi0 at bios0: UEFI 2.7
efi0: American Megatrends rev 0x50013
acpi0 at bios0: ACPI 6.2
acpi0: sleep states S0 S5
acpi0: tablesfg0: addr 0xc0000000, bus 0-255
acpihpet0 at acpi0: 19200000 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel Atom(R) x6425RE Processor @ 1.90GHz, 1895.90 MHz, 06-96-01, patch
00000017
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,RDSEED,SMAP,CLFLUSHOPT,CLWB,PT,SHA,UMIP,WAITPKG,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,IBRS_ALL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 1MB 64b/line
12-way L2 cache, 4MB 64b/line 16-way L3 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 38MHz
cpu0: mwait min=64, max=64, C-substates=0.2.0.2.2.1.1.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel Atom(R) x6425RE Processor @ 1.90GHz, 1895.90 MHz, 06-96-01, patch
00000017
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,RDSEED,SMAP,CLFLUSHOPT,CLWB,PT,SHA,UMIP,WAITPKG,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,IBRS_ALL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
cpu1: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 1MB 64b/line
12-way L2 cache, 4MB 64b/line 16-way L3 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel Atom(R) x6425RE Processor @ 1.90GHz, 1895.90 MHz, 06-96-01, patch
00000017
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,RDSEED,SMAP,CLFLUSHOPT,CLWB,PT,SHA,UMIP,WAITPKG,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,IBRS_ALL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
cpu2: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 1MB 64b/line
12-way L2 cache, 4MB 64b/line 16-way L3 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel Atom(R) x6425RE Processor @ 1.90GHz, 1895.90 MHz, 06-96-01, patch
00000017
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,RDSEED,SMAP,CLFLUSHOPT,CLWB,PT,SHA,UMIP,WAITPKG,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,IBRS_ALL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
cpu3: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 1MB 64b/line
12-way L2 cache, 4MB 64b/line 16-way L3 cache
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
acpiprt0 at acpi0: bus 0 (PC00)
acpiprt1 at acpi0: bus -1 (PEG0)
acpiprt2 at acpi0: bus -1 (PEG1)
acpiprt3 at acpi0: bus -1 (PEG2)
acpiprt4 at acpi0: bus -1 (PEG3)
acpiprt5 at acpi0: bus 1 (RP01)
acpiprt6 at acpi0: bus -1 (RP02)
acpiprt7 at acpi0: bus 2 (RP03)
acpiprt8 at acpi0: bus 6 (RP04)
acpiprt9 at acpi0: bus -1 (RP05)
acpiprt10 at acpi0: bus -1 (RP06)
acpiprt11 at acpi0: bus 7 (RP07)
acpipci0 at acpi0 PC00: 0x00000010 0x00000011 0x00000000
com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
com0: console
com1 at acpi0 UAR2 addr 0x2f8/0x8 irq 3: ns16550a, 16 byte fifo
"INTC1035" at acpi0 not configured
acpiac0 at acpi0: AC unit online
"ACPI000E" at acpi0 not configured
"INTC1020" at acpi0 not configured
"INTC1020" at acpi0 not configured
"INTC1020" at acpi0 not configured
"INTC1020" at acpi0 not configured
"INTC1020" at acpi0 not configured
"PNP0C14" at acpi0 not configured
acpibtn0 at acpi0: SLPB
acpibtn1 at acpi0: PWRB(wakeup)
"INTC1033" at acpi0 not configured
"INTC1033" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"INT33A1" at acpi0 not configured
acpihid0 at acpi0: HIDDacpihid0: failed getting button array capability
, 5 button array
"MSFT8000" at acpi0 not configured
tpm0 at acpi0 TPM_ 2.0 (TIS) addr 0xfed40000/0x5000, device 0x001b15d1 rev 0x16
"ADS0345" at acpi0 not configured
"IFX3100" at acpi0 not configured
"TXNW1010" at acpi0 not configured
acpipwrres0 at acpi0: WRST
acpicpu0 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpipwrres1 at acpi0: FN00, resource for FAN0
acpipwrres2 at acpi0: FN01, resource for FAN1
acpipwrres3 at acpi0: FN02, resource for FAN2
acpipwrres4 at acpi0: FN03, resource for FAN3
acpipwrres5 at acpi0: FN04, resource for FAN4
acpitz0 at acpi0: critical temperature is 127 degC
acpipwrres6 at acpi0: PIN_
cpu0: Enhanced SpeedStep 1895 MHz: speeds: 1901, 1900, 1800, 1700, 1600, 1500,
1400, 1300, 1200, 1100, 1000, 900, 800 MHz
pci0 at mainbus0 bus 0
0:31:5: mem address conflict 0xfe010000/0x1000
pchb0 at pci0 dev 0 function 0 "Intel Elkhart Lake Host" rev 0x01
inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics" rev 0x01
drm0 at inteldrm0
inteldrm0: msi, ELKHARTLAKE, gen 11
"Intel Elkhart Lake GNA" rev 0x01 at pci0 dev 8 function 0 not configured
xhci0 at pci0 dev 20 function 0 "Intel Elkhart Lake xHCI" rev 0x11: msi, xHCI
1.20
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00
addr 1
"Intel Elkhart Lake SRAM" rev 0x11 at pci0 dev 20 function 2 not configured
dwiic0 at pci0 dev 21 function 0 "Intel Elkhart Lake I2C" rev 0x11: apic 2 int
27
iic0 at dwiic0
dwiic1 at pci0 dev 21 function 1 "Intel Elkhart Lake I2C" rev 0x11: apic 2 int
28
iic1 at dwiic1
dwiic2 at pci0 dev 21 function 2 "Intel Elkhart Lake I2C" rev 0x11: apic 2 int
29
iic2 at dwiic2
dwiic3 at pci0 dev 21 function 3 "Intel Elkhart Lake I2C" rev 0x11: apic 2 int
30
iic3 at dwiic3
"Intel Elkhart Lake HECI" rev 0x11 at pci0 dev 22 function 0 not configured
ahci0 at pci0 dev 23 function 0 "Intel Elkhart Lake AHCI" rev 0x11: msi, AHCI
1.3.1
ahci0: port 0: 6.0Gb/s
ahci0: PHY offline on port 1
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, innodisk M.2(S42, S206> naa.524693e000367188
sd0: 57241MB, 512 bytes/sector, 117231408 sectors, thin
"Intel Elkhart Lake I2C" rev 0x11 at pci0 dev 24 function 0 not configured
"Intel Elkhart Lake CAN" rev 0x11 at pci0 dev 24 function 1 not configured
"Intel Elkhart Lake CAN" rev 0x11 at pci0 dev 24 function 2 not configured
dwiic4 at pci0 dev 25 function 0 "Intel Elkhart Lake I2C" rev 0x11: apic 2 int
31
iic4 at dwiic4
"Intel Elkhart Lake UART" rev 0x11 at pci0 dev 25 function 2 not configured
"Intel Elkhart Lake I2C" rev 0x11 at pci0 dev 27 function 0 not configured
ppb0 at pci0 dev 28 function 0 "Intel Elkhart Lake PCIE" rev 0x11
pci1 at ppb0 bus 1
ppb1 at pci0 dev 28 function 2 "Intel Elkhart Lake PCIE" rev 0x11: msi
pci2 at ppb1 bus 2
ppb2 at pci2 dev 0 function 0 vendor "Pericom", unknown product 0x2303 rev 0x05
pci3 at ppb2 bus 3
ppb3 at pci3 dev 1 function 0 vendor "Pericom", unknown product 0x2303 rev
0x05: msi
pci4 at ppb3 bus 4
em0 at pci4 dev 0 function 0 "Intel I210" rev 0x03: msi, address
f8:02:78:21:a4:35
ppb4 at pci3 dev 2 function 0 vendor "Pericom", unknown product 0x2303 rev
0x05: msi
pci5 at ppb4 bus 5
em1 at pci5 dev 0 function 0 "Intel I210" rev 0x03: msi, address
f8:02:78:21:a4:36
ppb5 at pci0 dev 28 function 3 "Intel Elkhart Lake PCIE" rev 0x11: msi
pci6 at ppb5 bus 6
iwx0 at pci6 dev 0 function 0 "Intel Wi-Fi 6 AX210" rev 0x1a, msix
ppb6 at pci0 dev 28 function 6 "Intel Elkhart Lake PCIE" rev 0x11: msi
pci7 at ppb6 bus 7
igc0 at pci7 dev 0 function 0 "Intel I225-IT" rev 0x03, msix, 4 queues, address
34:73:5a:ff:a5:b1
"Intel Elkhart Lake LH2OSE" rev 0x11 at pci0 dev 29 function 0 not configured
dwqe0 at pci0 dev 29 function 1 "Intel Elkhart Lake Ethernet" rev 0x11: rev
0x52, address 34:73:5a:ff:a5:b2
eephy0 at dwqe0 phy 1: 88E1512 10/100/1000 PHY, rev. 1
"Intel Elkhart Lake Ethernet" rev 0x11 at pci0 dev 29 function 2 not configured
"Intel Elkhart Lake UART" rev 0x11 at pci0 dev 30 function 0 not configured
pcib0 at pci0 dev 31 function 0 "Intel Elkhart Lake eSPI" rev 0x11
azalia0 at pci0 dev 31 function 3 "Intel Elkhart Lake HD Audio" rev 0x11: msi
azalia0: codecs: IDT/0x76e0, Intel/0x281b, using IDT/0x76e0
audio0 at azalia0
ichiic0 at pci0 dev 31 function 4 "Intel Elkhart Lake SMBus" rev 0x11: apic 2
int 16
iic5 at ichiic0
"Intel Elkhart Lake SPI" rev 0x11 at pci0 dev 31 function 5 not configured
isa0 at pcib0
isadma0 at isa0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vmm0 at mainbus0: VMX/EPT
efifb at mainbus0 not configured
uhub1 at uhub0 port 3 configuration 1 interface 0 "Texas Instruments product
0x8027" rev 2.10/1.10 addr 2
ugen0 at uhub0 port 5 "Intel Bluetooth" rev 2.01/0.00 addr 3
uhub2 at uhub0 port 15 configuration 1 interface 0 "Texas Instruments product
0x8025" rev 3.00/1.10 addr 4
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (d6d91d6e9bdd6dbb.a) swap on sd0b dump on sd0b
inteldrm0: 1024x768, 32bpp
wsdisplay0 at inteldrm0 mux 1
wsdisplay0: screen 0-5 added (std, vt100 emulation)
iwx0: hw rev 0x420, fw 77.f92b5fed.0, pnvm 181407b3, address 8c:b8:7e:ee:89:0f
<4>arp: attempt to add entry for 10.0.1.1 on igc0 by 00:30:48:57:ed:0a on dwqe0
