Hi, I notice a regression report on Bugzilla [1]. Quoting from it: > Hey! > > I'm using Linux 6.3.0 on x86_64. Distro is NixOS. > > I'm using the XMM7360 WWAN device: > > 05:00.0 Wireless controller [0d40]: Intel Corporation XMM7360 LTE Advanced Modem (rev 01) > > As discussed in https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/612, the device currently needs some manual babysitting due to broken suspend/resume, and some (slightly patched) python script sending commands to `/dev/wwan0xmmrpc0`: > > ``` > echo 1 > /sys/bus/pci/devices/0000:05:00.0/reset > echo 1 > /sys/bus/pci/devices/0000:05:00.0/remove > echo 1 > /sys/bus/pci/rescan > # wait > open_xdatachannel.py --apn "internet" > ``` > > > I saw the following messages in dmesg: > ``` > [Sa Jun 17 20:09:42 2023] pci_bus 0000:01: Allocating resources > [Sa Jun 17 20:09:42 2023] pci_bus 0000:02: Allocating resources > [Sa Jun 17 20:09:42 2023] pci_bus 0000:03: Allocating resources > [Sa Jun 17 20:09:42 2023] pci_bus 0000:04: Allocating resources > [Sa Jun 17 20:09:42 2023] pci_bus 0000:05: Allocating resources > [Sa Jun 17 20:09:42 2023] pci_bus 0000:06: Allocating resources > [Sa Jun 17 20:09:42 2023] pci_bus 0000:07: Allocating resources > [Sa Jun 17 20:09:49 2023] iosm 0000:05:00.0: msg timeout > [Sa Jun 17 20:09:49 2023] iosm 0000:05:00.0: msg timeout > [Sa Jun 17 20:09:49 2023] pci 0000:05:00.0: Removing from iommu group 15 > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: [8086:7360] type 00 class 0x0d4000 > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: reg 0x10: [mem 0xfd500000-0xfd500fff 64bit] > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: reg 0x18: [mem 0xfd501000-0xfd5013ff 64bit] > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: PME# supported from D0 D3hot D3cold > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: Adding to iommu group 15 > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: BAR 0: assigned [mem 0xfd500000-0xfd500fff 64bit] > [Sa Jun 17 20:09:52 2023] pci 0000:05:00.0: BAR 2: assigned [mem 0xfd501000-0xfd5013ff 64bit] > [Sa Jun 17 20:10:09 2023] ------------[ cut here ]------------ > [Sa Jun 17 20:10:09 2023] memcpy: detected field-spanning write (size 16) of single field "&adth->dg" at drivers/net/wwan/iosm/iosm_ipc_mux_codec.c:852 (size 8) > [Sa Jun 17 20:10:09 2023] WARNING: CPU: 11 PID: 0 at drivers/net/wwan/iosm/iosm_ipc_mux_codec.c:852 ipc_mux_ul_adb_finish+0x17e/0x290 [iosm] > [Sa Jun 17 20:10:09 2023] Modules linked in: hid_multitouch qrtr ccm snd_seq_dummy snd_hrtimer snd_seq snd_seq_device hid_lenovo uhid xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp nft_compat nft_chain_nat nf_tables nfnetlink af_packet rfcomm cmac algif_hash algif_skcipher af_alg bnep nls_iso8859_1 nls_cp437 vfat fat joydev mousedev amdgpu iwlmvm r8153_ecm cdc_ether snd_soc_dmic snd_acp3x_pdm_dma snd_acp3x_rn usbnet snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp mac80211 snd_sof_pci snd_sof_xtensa_dsp snd_ctl_led snd_sof snd_hda_codec_realtek snd_sof_utils intel_rapl_msr snd_hda_codec_generic libarc4 iommu_v2 snd_hda_codec_hdmi snd_soc_core uvcvideo btusb gpu_sched snd_compress edac_mce_amd videobuf2_vmalloc drm_ttm_helper btrtl snd_hda_intel ac97_bus edac_core snd_pcm_dmaengine uvc btbcm videobuf2_memops ttm snd_intel_dspcfg intel_rapl_common videobuf2_v4l2 snd_intel_sdw_acpi crc32_pclmul btintel tps6598x snd_pci_ps polyval_clmulni regmap_i2c snd_hda_codec btmtk snd_rpl_pci_acp6x think_lmi > [Sa Jun 17 20:10:09 2023] polyval_generic iwlwifi wmi_bmof firmware_attributes_class videodev drm_display_helper snd_acp_pci gf128mul snd_hda_core bluetooth ghash_clmulni_intel thinkpad_acpi r8152 r8169 videobuf2_common snd_pci_acp6x snd_hwdep nvram drm_kms_helper cfg80211 snd_pci_acp5x ucsi_acpi mii sp5100_tco rapl ledtrig_audio mc psmouse ecdh_generic snd_pcm drm_buddy platform_profile typec_ucsi snd_rn_pci_acp3x ecc watchdog realtek snd_acp_config snd_timer crc16 agpgart iosm k10temp typec i2c_algo_bit ipmi_devintf snd_soc_acpi mdio_devres syscopyarea snd sysfillrect video snd_pci_acp3x libphy sysimgblt wwan 8250_pci ipmi_msghandler rfkill i2c_piix4 ac soundcore roles thermal battery tiny_power_button serial_multi_instantiate evdev i2c_scmi i2c_designware_platform wmi acpi_cpufreq mac_hid button i2c_designware_core serio_raw sch_cake ctr loop xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter veth tun tap macvlan bridge stp llc kvm_amd ccp kvm irqbypass tcp_bbr i2c_dev drm fuse backlight i2c_core deflate > [Sa Jun 17 20:10:09 2023] efi_pstore configfs efivarfs dmi_sysfs ip_tables x_tables dm_crypt cbc encrypted_keys trusted asn1_encoder tee hid_generic usbhid hid mmc_block dm_mod dax btrfs rtsx_pci_sdmmc nvme mmc_core nvme_core input_leds led_class xhci_pci atkbd tpm_crb xhci_pci_renesas t10_pi libps2 vivaldi_fmap xhci_hcd sha512_ssse3 ehci_pci crc64_rocksoft ehci_hcd sha512_generic crc64 blake2b_generic crc_t10dif aesni_intel rtsx_pci xor usbcore libaes libcrc32c tpm_tis crct10dif_generic crypto_simd tpm_tis_core cryptd crct10dif_pclmul crc32c_generic crc32c_intel tpm mfd_core crct10dif_common usb_common i8042 rng_core rtc_cmos serio raid6_pq autofs4 > [Sa Jun 17 20:10:09 2023] CPU: 11 PID: 0 Comm: swapper/11 Tainted: G W 6.3.0 #1-NixOS > [Sa Jun 17 20:10:09 2023] Hardware name: LENOVO 20UF000LGE/20UF000LGE, BIOS R1CET72W(1.41 ) 06/27/2022 > [Sa Jun 17 20:10:09 2023] RIP: 0010:ipc_mux_ul_adb_finish+0x17e/0x290 [iosm] > [Sa Jun 17 20:10:09 2023] Code: 00 00 0f 85 44 ff ff ff b9 08 00 00 00 48 c7 c2 a8 1d 20 c1 48 89 ee 48 c7 c7 e0 1c 20 c1 c6 05 e8 e9 00 00 01 e8 92 65 ea eb <0f> 0b e9 1b ff ff ff 48 8b 83 b4 02 00 00 c7 00 00 00 00 00 0f b7 > [Sa Jun 17 20:10:09 2023] RSP: 0018:ffff9b9b80424ef0 EFLAGS: 00010282 > [Sa Jun 17 20:10:09 2023] RAX: 0000000000000000 RBX: ffff8d1bbe562000 RCX: 0000000000000027 > [Sa Jun 17 20:10:09 2023] RDX: ffff8d1e212e14c8 RSI: 0000000000000001 RDI: ffff8d1e212e14c0 > [Sa Jun 17 20:10:09 2023] RBP: 0000000000000010 R08: 0000000000000000 R09: ffff9b9b80424d98 > [Sa Jun 17 20:10:09 2023] R10: 0000000000000003 R11: ffffffffae938888 R12: 0000000000000000 > [Sa Jun 17 20:10:09 2023] R13: 00000000000000d8 R14: ffff8d1bbe5622e4 R15: ffff8d1ba1c40108 > [Sa Jun 17 20:10:09 2023] FS: 0000000000000000(0000) GS:ffff8d1e212c0000(0000) knlGS:0000000000000000 > [Sa Jun 17 20:10:09 2023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [Sa Jun 17 20:10:09 2023] CR2: 000026180d354000 CR3: 0000000033b0c000 CR4: 0000000000350ee0 > [Sa Jun 17 20:10:09 2023] Call Trace: > [Sa Jun 17 20:10:09 2023] <IRQ> > [Sa Jun 17 20:10:09 2023] ipc_imem_tq_adb_timer_cb+0x12/0x20 [iosm] > [Sa Jun 17 20:10:09 2023] ipc_task_queue_handler+0xa1/0x100 [iosm] > [Sa Jun 17 20:10:09 2023] tasklet_action_common.constprop.0+0x132/0x140 > [Sa Jun 17 20:10:09 2023] __do_softirq+0xca/0x2ae > [Sa Jun 17 20:10:09 2023] __irq_exit_rcu+0xab/0xe0 > [Sa Jun 17 20:10:09 2023] sysvec_apic_timer_interrupt+0x72/0x90 > [Sa Jun 17 20:10:09 2023] </IRQ> > [Sa Jun 17 20:10:09 2023] <TASK> > [Sa Jun 17 20:10:09 2023] asm_sysvec_apic_timer_interrupt+0x1a/0x20 > [Sa Jun 17 20:10:09 2023] RIP: 0010:cpuidle_enter_state+0xcc/0x440 > [Sa Jun 17 20:10:09 2023] Code: 2a d8 66 ff e8 25 f2 ff ff 8b 53 04 49 89 c5 0f 1f 44 00 00 31 ff e8 a3 eb 65 ff 45 84 ff 0f 85 57 02 00 00 fb 0f 1f 44 00 00 <45> 85 f6 0f 88 85 01 00 00 49 63 d6 48 8d 04 52 48 8d 04 82 49 8d > [Sa Jun 17 20:10:09 2023] RSP: 0018:ffff9b9b801d7e90 EFLAGS: 00000246 > [Sa Jun 17 20:10:09 2023] RAX: ffff8d1e212f2780 RBX: ffff8d1b83198c00 RCX: 0000000000000000 > [Sa Jun 17 20:10:09 2023] RDX: 000000000000000b RSI: 0000000cb4e6e5b9 RDI: 0000000000000000 > [Sa Jun 17 20:10:09 2023] RBP: 0000000000000002 R08: 0000000000000004 R09: 000000003d113146 > [Sa Jun 17 20:10:09 2023] R10: 0000000000000018 R11: 000000000000055e R12: ffffffffae9b3860 > [Sa Jun 17 20:10:09 2023] R13: 0000052a93e6f49a R14: 0000000000000002 R15: 0000000000000000 > [Sa Jun 17 20:10:09 2023] cpuidle_enter+0x2d/0x40 > [Sa Jun 17 20:10:09 2023] do_idle+0x1bf/0x220 > [Sa Jun 17 20:10:09 2023] cpu_startup_entry+0x1d/0x20 > [Sa Jun 17 20:10:09 2023] start_secondary+0x115/0x140 > [Sa Jun 17 20:10:09 2023] secondary_startup_64_no_verify+0xe5/0xeb > [Sa Jun 17 20:10:09 2023] </TASK> > [Sa Jun 17 20:10:09 2023] ---[ end trace 0000000000000000 ]--- > ``` > > `drivers/net/wwan/iosm/iosm_ipc_mux_codec.c:852` was introduced in 1f52d7b622854b8bd7a1be3de095ca2e1f77098e ("net: wwan: iosm: Enable M.2 7360 WWAN card support") See Bugzilla for the full thread. M Chetan Kumar: Can you take a look on this issue please? Anyway, to be sure this issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot: #regzbot introduced: 1f52d7b622854b https://bugzilla.kernel.org/show_bug.cgi?id=217569 #regzbot title: field-spanning write (memcpy) detected on Intel XMM7360 #regzbot link: https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/612 Thanks. [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217569 -- An old man doll... just what I always wanted! - Clara
