From: le unium Subject: Re: diff: fix mwx(4) firmware download mbuf corruption & tx cleanup race To: le unium , tech@openbsd.org Cc: claudio@openbsd.org Date: Tue, 13 Oct 2026 16:16:28 +0530 hi claudio, > Could you share a dmesg and the stack traces of these panics? ive attached the dmesg as a text file, the stack traces are: ddb{0}> trace db_enter() at db_enter+0x14 panic(ffffffff8270bb1a) at panic+0xd5 pool_cache_get(ffffffff82bf8e58) at pool_cache_get+0x27a pool_get(ffffffff82bf8e58,2) at pool_get+0x6d m_gethdr(2,1) at m_gethdr+0x3f mwx_mcu_alloc_msg(1000) at mwx_mcu_alloc_msg+0x2e mwx_mcu_send_firmware(ffff8000000cb000,ee,ffff800000e2ac10,42810,1000) at mwx_m cu_send_firmware+0x68 mwx_load_firmware(ffff8000000cb000) at mwx_load_firmware+0x662 mwx_init_hardware(ffff8000000cb000) at mwx_init_hardware+0xc9 mwx_preinit(ffff8000000cb000) at mwx_preinit+0x49 config_process_deferred_mountroot() at config_process_deferred_mountroot+0x49 main(0) at main+0x871 end trace frame: 0x0, count: 3 ddb{0}> show panic *cpu0: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0x fffff300bfab3b00+16 0xfffff3000d7b1000!=0xd59678b5cdd38d9d and, later on: ddb{0}> show panic the kernel did not panic ddb{0}> trace m_tag_delete_chain(fffff680bfab0c00) at m_tag_delete_chain+0x30 m_free(fffff680bfab0c00) at m_free+0x111 m_freem(fffff680bfab0c00) at m_freem+0x38 mwx_dma_tx_cleanup(ffff8000000cb000,ffff8000000ccab8) at mwx_dma_tx_cleanup+0x1 3a mwx_intr(ffff8000000cb000) at mwx_intr+0x17f intr_handler(ffffffff83156ba0,ffff800000090080) at intr_handler+0xa4 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x18f spllower(0) at spllower+0x58 m_free(fffff680bfab0c00) at m_free+0x18d m_freem(fffff680bfab0c00) at m_freem+0x38 mwx_dma_tx_cleanup(ffff8000000cb000,ffff8000000ccab8) at mwx_dma_tx_cleanup+0x1 3a mwx_mcu_send_firmware(ffff8000000cb000,ee,ffff800000e29c10,42810,1000) at mwx_m cu_send_firmware+0x14b mwx_load_firmware(ffff8000000cb000) at mwx_load_firmware+0x662 mwx_init_hardware(ffff8000000cb000) at mwx_init_hardware+0xc9 mwx_preinit(ffff8000000cb000) at mwx_preinit+0x49 config_process_deferred_mountroot() at config_process_deferred_mountroot+0x49 main(0) at main+0x871 end trace frame: 0x0, count: -17 ddb{0}> > On first look it looks like your diff changes too many things at once my apologies! just to clarify my changes in case it helps: - i expanded the fwdl ring size to 64 because the firmware image is large and a 16 slot ring fills up pretty quickly and starts stalling (both in mwx_dma_tx_cleanup) - the boot thread and interrupt handler were calling cleanup at the same time, so splnet stops the race between them - if an interrupt fired while m_freem was running the interrupt handler would see the non null pointer and call free a second time - in mcu_alloc_msg, m_adj was shifting m_data forward by 32b, so when send_msg copied firmware stuff into it, it wrote past the buff boundary into kernel mem - in mcu_send_buf when m_data was updated it was updating m_len along with it but, it was not updating m_pkthdr.len - in load_firmware the chunk size + desc header was more than 4096b as far as i could tell, so subtracting just makes it fit cleaner - in mcu_send_firmware it was queueing the data faster than the pcie dma engine could transmit it > I wonder why I'm not seeing those panics. my best guess is that because i tested it on an openbsd guest with my physical mt7921 card passed through via pcie/vfio, it might(?) have added some latency, because these issues only occured sometimes regards, unium OpenBSD 8.0-current (GENERIC.MP) #2: Tue Oct 13 04:20:04 IST 2026 dev1@dev.my.domain:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 4278046720 (4079MB) avail mem = 4126306304 (3935MB) random: good seed from bootblocks mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xf52b0 (10 entries) bios0: vendor SeaBIOS version "1.16.3-debian-1.16.3-2" date 04/01/2014 bios0: QEMU Standard PC (i440FX + PIIX, 1996) acpi0 at bios0: ACPI 1.0 acpi0: sleep states S3 S4 S5 acpi0: tables DSDT FACP APIC HPET WAET acpi0: wakeup devices acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.46 MHz, 19-50-00 cpu0: cpuid 1 edx=178bfbff ecx=f7f83203 cpu0: cpuid 6 eax=4 cpu0: cpuid 7.0 ebx=219c07ab ecx=40060c edx=ac000010 cpu0: cpuid d.1 eax=f cpu0: cpuid 80000001 edx=2fd3fbff ecx=8003f7 cpu0: cpuid 80000008 ebx=1302d205 cpu0: 64KB 64b/line 2-way D-cache, 64KB 64b/line 2-way I-cache cpu0: 512KB 64b/line 16-way L2 cache cpu0: smt 0, core 0, package 0, type P mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges cpu0: apic clock running at 1000MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.60 MHz, 19-50-00 cpu1: smt 0, core 1, package 0, type P cpu2 at mainbus0: apid 2 (application processor) cpu2: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.70 MHz, 19-50-00 cpu2: smt 0, core 2, package 0, type P cpu3 at mainbus0: apid 3 (application processor) cpu3: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.47 MHz, 19-50-00 cpu3: smt 0, core 3, package 0, type P ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins acpihpet0 at acpi0: 100000000 Hz acpiprt0 at acpi0: bus 0 (PCI0) "ACPI0006" at acpi0 not configured acpipci0 at acpi0 PCI0 "PNP0A06" at acpi0 not configured "PNP0A06" at acpi0 not configured "PNP0A06" at acpi0 not configured "QEMU0002" at acpi0 not configured "PNP0303" at acpi0 not configured "PNP0F13" at acpi0 not configured com0 at acpi0 COM1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo acpicmos0 at acpi0 "ACPI0010" at acpi0 not configured acpicpu0 at acpi0: C1(@1 halt!) acpicpu1 at acpi0: C1(@1 halt!) acpicpu2 at acpi0: C1(@1 halt!) acpicpu3 at acpi0: C1(@1 halt!) pvbus0 at mainbus0: KVM pvclock0 at pvbus0 pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02 pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00 pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility pciide0: channel 0 disabled (no drives) atapiscsi0 at pciide0 channel 1 drive 0 scsibus1 at atapiscsi0: 2 targets cd0 at scsibus1 targ 0 lun 0: removable cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int 9 iic0 at piixpm0 vga1 at pci0 dev 2 function 0 "Qumranet Virtio 1.x GPU" rev 0x01 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) mwx0 at pci0 dev 3 function 0 "MediaTek MT7921" rev 0x00mwx0: mwx_reg_addr reg 70010200 via L1 mwx0: mwx_reg_addr reg 70010204 via L1 mwx0: mwx_reg_addr reg 70010020 via L1 : msi, rev: MT7961.10 mwx0: WFSYS reset mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 virtio0 at pci0 dev 4 function 0 "Qumranet Virtio Network" rev 0x00 vio0 at virtio0: 1 queue, address 52:54:00:12:34:56 virtio0: msix per-VQ virtio1 at pci0 dev 5 function 0 "Qumranet Virtio Storage" rev 0x00 vioblk0 at virtio1 virtio1: msix per-VQ scsibus2 at vioblk0: 1 targets sd0 at scsibus2 targ 0 lun 0: sd0: 40960MB, 512 bytes/sector, 83886080 sectors isa0 at pcib0 isadma0 at isa0 fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 vmm0 at mainbus0: SVM/RVI mwx0: restrict all mbufs to low memory vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets root on sd0a (4c18dc655bc8bc55.a) swap on sd0b dump on sd0b WARNING: / was not properly unmounted mwx0: preinit mwx0: DMA full-reset mwx0: WFSYS reset mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18060010 via L1 mwx0: mwx_reg_addr reg 18060010 via L1 mwx0: mwx_reg_addr reg 18060010 via L1 mwx0: mwx_mcu_send_mbuf: cmd 00000010 mwx0: mcu rx event, seq 1 eid 4 ext_eid 2 opt 0 len 12 mwx0: mcu rx event, seq 1 eid 4 ext_eid 2, opt 0 len 12, cmd 10, mcu_int 2 mwx0: HW/SW version: 0x8a108a10, build time: 20251223091050a mwx0: mwx_mcu_send_mbuf: cmd 00000005 mwx0: mcu rx event, seq 2 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 2 eid 1 ext_eid 0, opt 0 len 12, cmd 5, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000007 mwx0: mcu rx event, seq 3 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 3 eid 1 ext_eid 0, opt 0 len 12, cmd 7, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000010 mwx0: mcu rx event, seq 4 eid 4 ext_eid 3 opt 0 len 12 mwx0: mcu rx event, seq 4 eid 4 ext_eid 3, opt 0 len 12, cmd 10, mcu_int 3 mwx0: WM firmware version: ____010000, build time: 20251223091148 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 5 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 5 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 6 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 6 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 7 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 7 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 8 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 8 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000002 mwx0: mcu rx event, seq 9 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 9 eid 1 ext_eid 0, opt 0 len 12, cmd 2, mcu_int 0 mwx0: firmware loaded mwx0: mwx_mcu_send_mbuf: cmd 0004008a mwx0: mcu rx event, seq a eid ec ext_eid 0 opt 0 len 528 mwx0: mcu rx event, seq a eid ec ext_eid 0, opt 0 len 528, cmd 4008a, mcu_int 0 mwx0: address 50:5a:65:c8:e3:91 mwx0: mwx_mcu_send_mbuf: cmd 000400c5 mwx0: mwx_mcu_send_mbuf: cmd 000021ed mwx0: mcu rx event, seq c eid ed ext_eid 0 opt 0 len 20 mwx0: mcu rx event, seq c eid ed ext_eid 0, opt 0 len 20, cmd 21ed, mcu_int 0 mwx0: enable deep sleep mwx0: mwx_mcu_send_mbuf: cmd 000400ca mwx0: preinit done mwx0: low power event state 1 fd0 at fdc0 drive 1: density unknown syncing disks... done rebooting... OpenBSD 8.0-current (GENERIC.MP) #3: Tue Oct 13 05:51:23 IST 2026 dev1@dev.my.domain:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 4278046720 (4079MB) avail mem = 4126310400 (3935MB) random: good seed from bootblocks mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xf52b0 (10 entries) bios0: vendor SeaBIOS version "1.16.3-debian-1.16.3-2" date 04/01/2014 bios0: QEMU Standard PC (i440FX + PIIX, 1996) acpi0 at bios0: ACPI 1.0 acpi0: sleep states S3 S4 S5 acpi0: tables DSDT FACP APIC HPET WAET acpi0: wakeup devices acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.56 MHz, 19-50-00 cpu0: cpuid 1 edx=178bfbff ecx=f7f83203 cpu0: cpuid 6 eax=4 cpu0: cpuid 7.0 ebx=219c07ab ecx=40060c edx=ac000010 cpu0: cpuid d.1 eax=f cpu0: cpuid 80000001 edx=2fd3fbff ecx=8003f7 cpu0: cpuid 80000008 ebx=1302d205 cpu0: 64KB 64b/line 2-way D-cache, 64KB 64b/line 2-way I-cache cpu0: 512KB 64b/line 16-way L2 cache cpu0: smt 0, core 0, package 0, type P mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges cpu0: apic clock running at 1000MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.39 MHz, 19-50-00 cpu1: smt 0, core 1, package 0, type P cpu2 at mainbus0: apid 2 (application processor) cpu2: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.67 MHz, 19-50-00 cpu2: smt 0, core 2, package 0, type P cpu3 at mainbus0: apid 3 (application processor) cpu3: AMD Ryzen 7 5800HS with Radeon Graphics, 3194.39 MHz, 19-50-00 cpu3: smt 0, core 3, package 0, type P ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins acpihpet0 at acpi0: 100000000 Hz acpiprt0 at acpi0: bus 0 (PCI0) "ACPI0006" at acpi0 not configured acpipci0 at acpi0 PCI0 "PNP0A06" at acpi0 not configured "PNP0A06" at acpi0 not configured "PNP0A06" at acpi0 not configured "QEMU0002" at acpi0 not configured "PNP0303" at acpi0 not configured "PNP0F13" at acpi0 not configured com0 at acpi0 COM1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo acpicmos0 at acpi0 "ACPI0010" at acpi0 not configured acpicpu0 at acpi0: C1(@1 halt!) acpicpu1 at acpi0: C1(@1 halt!) acpicpu2 at acpi0: C1(@1 halt!) acpicpu3 at acpi0: C1(@1 halt!) pvbus0 at mainbus0: KVM pvclock0 at pvbus0 pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02 pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00 pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility pciide0: channel 0 disabled (no drives) atapiscsi0 at pciide0 channel 1 drive 0 scsibus1 at atapiscsi0: 2 targets cd0 at scsibus1 targ 0 lun 0: removable cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int 9 iic0 at piixpm0 vga1 at pci0 dev 2 function 0 "Qumranet Virtio 1.x GPU" rev 0x01 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) mwx0 at pci0 dev 3 function 0 "MediaTek MT7921" rev 0x00mwx0: mwx_reg_addr reg 70010200 via L1 mwx0: mwx_reg_addr reg 70010204 via L1 mwx0: mwx_reg_addr reg 70010020 via L1 : msi, rev: MT7961.10 mwx0: WFSYS reset mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 virtio0 at pci0 dev 4 function 0 "Qumranet Virtio Network" rev 0x00 vio0 at virtio0: 1 queue, address 52:54:00:12:34:56 virtio0: msix per-VQ virtio1 at pci0 dev 5 function 0 "Qumranet Virtio Storage" rev 0x00 vioblk0 at virtio1 virtio1: msix per-VQ scsibus2 at vioblk0: 1 targets sd0 at scsibus2 targ 0 lun 0: sd0: 40960MB, 512 bytes/sector, 83886080 sectors isa0 at pcib0 isadma0 at isa0 fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 vmm0 at mainbus0: SVM/RVI mwx0: restrict all mbufs to low memory vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets root on sd0a (4c18dc655bc8bc55.a) swap on sd0b dump on sd0b mwx0: preinit mwx0: DMA full-reset mwx0: WFSYS reset mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18000140 via L1 mwx0: mwx_reg_addr reg 18060010 via L1 mwx0: mwx_reg_addr reg 18060010 via L1 mwx0: mwx_reg_addr reg 18060010 via L1 mwx0: mwx_mcu_send_mbuf: cmd 00000010 mwx0: mcu rx event, seq 1 eid 4 ext_eid 2 opt 0 len 12 mwx0: mcu rx event, seq 1 eid 4 ext_eid 2, opt 0 len 12, cmd 10, mcu_int 2 mwx0: HW/SW version: 0x8a108a10, build time: 20251223091050a mwx0: mwx_mcu_send_mbuf: cmd 00000005 mwx0: mcu rx event, seq 2 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 2 eid 1 ext_eid 0, opt 0 len 12, cmd 5, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000007 mwx0: mcu rx event, seq 3 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 3 eid 1 ext_eid 0, opt 0 len 12, cmd 7, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000010 mwx0: mcu rx event, seq 4 eid 4 ext_eid 3 opt 0 len 12 mwx0: mcu rx event, seq 4 eid 4 ext_eid 3, opt 0 len 12, cmd 10, mcu_int 3 mwx0: WM firmware version: ____010000, build time: 20251223091148 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 5 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 5 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 6 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 6 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 7 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 7 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000001 mwx0: mcu rx event, seq 8 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 8 eid 1 ext_eid 0, opt 0 len 12, cmd 1, mcu_int 0 mwx0: mwx_mcu_send_mbuf: cmd 00000002 mwx0: mcu rx event, seq 9 eid 1 ext_eid 0 opt 0 len 12 mwx0: mcu rx event, seq 9 eid 1 ext_eid 0, opt 0 len 12, cmd 2, mcu_int 0 mwx0: firmware loaded mwx0: mwx_mcu_send_mbuf: cmd 0004008a mwx0: mcu rx event, seq a eid ec ext_eid 0 opt 0 len 528 mwx0: mcu rx event, seq a eid ec ext_eid 0, opt 0 len 528, cmd 4008a, mcu_int 0 mwx0: address 50:5a:65:c8:e3:91 mwx0: mwx_mcu_send_mbuf: cmd 000400c5 mwx0: mwx_mcu_send_mbuf: cmd 000021ed mwx0: mcu rx event, seq c eid ed ext_eid 0 opt 0 len 20 mwx0: mcu rx event, seq c eid ed ext_eid 0, opt 0 len 20, cmd 21ed, mcu_int 0 mwx0: enable deep sleep mwx0: mwx_mcu_send_mbuf: cmd 000400ca mwx0: preinit done mwx0: low power event state 1 fd0 at fdc0 drive 1: density unknown