Re: Kernel Panic on high bandwidth transfer over wifi
On 08/29/2018 04:42 AM, Nathaniel Munk wrote: > Hi all, > I'm running Arch Linux on kernel 4.18.5 (same issue on both arch-provided > kernel and mainline built-from-source). There is an issue whereby the kernel > crashes when transferring at high bandwidths (approx 6mB/s) over a specific > wifi connection. I can only reproduce the issue when using the Personal > Hotspot on my iPhone 6S+, but can reproduce it very consistently on that > connection. > > More often than not, any download reaching this speed will cause a panic, but > if the download is immediately terminated at the first error the system can > recover (and doing this I have obtained the attached logs). Unfortunately, I > have not had access to a second machine to obtain the netconsole printout of > the panic. > > As above, high-bandwidth transfers on other wifi networks do not cause the > issue (nor on ethernet connections). > > As you can see from the attached log, the issue appears at tcp_recvmsg+0x579 > and net_tx_action+0x1fe. At both these positions (net/ipv4/tcp.c:2000 and > net/core/dev.c:4279 in mainline 4.18.5), a member of the skb struct is called. > > Thank you for your time (and I apologize if this is spurious or badly worded, > this is my first bug report), and please don't hesitate to let me know if > there's anything else I can do to help work this out. > > Regards, > --- > Nathaniel Munk > nathan...@munk.com.au > Unfortunately there is no attached log ;)
Re: Kernel Panic on high bandwidth transfer over wifi
Of course I did, sorry. --- Nathaniel Munk nathan...@munk.com.au 0435 726 099 ‐‐‐ Original Message ‐‐‐ On August 29, 2018 10:09 PM, Willy Tarreau wrote: > On Wed, Aug 29, 2018 at 11:42:44AM +, Nathaniel Munk wrote: > > > As you can see from the attached log > > You apparently forgot to attach the log. > > Willy [ 1242.620637] TCP recvmsg seq # bug: copied 93359823, seq 1, rcvnxt 93359D8F, fl 8000 [ 1242.620700] WARNING: CPU: 0 PID: 10255 at net/ipv4/tcp.c:2003 tcp_recvmsg+0x579/0xc70 [ 1242.620704] Modules linked in: ccm nf_tables_set nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat_ipv6 nft_chain_nat_ipv4 nf_tables ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bpfilter 8021q mrp ipheth btusb btrtl btbcm btintel uvcvideo bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev media ecdh_generic joydev mousedev nls_iso8859_1 nls_cp437 vfat fat arc4 snd_hda_codec_hdmi [ 1242.620797] snd_soc_skl snd_soc_skl_ipc iwlmvm snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi snd_soc_core mei_wdt mac80211 snd_hda_codec_realtek snd_compress iTCO_wdt ac97_bus snd_hda_codec_generic snd_pcm_dmaengine iTCO_vendor_support intel_rapl snd_hda_intel x86_pkg_temp_thermal intel_powerclamp snd_hda_codec coretemp kvm_intel snd_hda_core wmi_bmof iwlwifi kvm cfg80211 snd_hwdep input_leds snd_pcm thinkpad_acpi snd_timer psmouse irqbypass nvram mei_me intel_cstate rfkill intel_uncore e1000e intel_rapl_perf mei i2c_i801 snd intel_pch_thermal soundcore ac tpm_tis tpm_tis_core tpm rng_core led_class evdev battery wmi rtc_cmos mac_hid pcc_cpufreq ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 fscrypto algif_skcipher af_alg dm_crypt dm_mod sd_mod crct10dif_pclmul crc32_pclmul [ 1242.620885] crc32c_intel ghash_clmulni_intel pcbc serio_raw atkbd libps2 ahci libahci aesni_intel libata aes_x86_64 crypto_simd xhci_pci cryptd glue_helper scsi_mod xhci_hcd i8042 serio hid_generic usbhid usbcore usb_common hid intel_agp i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm intel_gtt agpgart [ 1242.620933] CPU: 0 PID: 10255 Comm: IOCP Thread 0 Tainted: G U W 4.18.5-arch1-1-ARCH #1 [ 1242.620937] Hardware name: LENOVO 20FN001CAU/20FN001CAU, BIOS R06ET59W (1.33 ) 02/27/2018 [ 1242.620949] RIP: 0010:tcp_recvmsg+0x579/0xc70 [ 1242.620951] Code: fb ff ff 4c 89 e0 41 8b 8d 38 05 00 00 44 8b 44 24 2c 89 de 48 c7 c7 28 f5 6f 9a 4c 89 54 24 08 48 89 44 24 10 e8 11 f8 9f ff <0f> 0b 48 8b 44 24 10 4c 8b 54 24 08 8b 4c 24 3c 39 4c 24 38 0f 8c [ 1242.621003] RSP: 0018:b0de41223bb0 EFLAGS: 00010282 [ 1242.621007] RAX: RBX: 93359823 RCX: 0001 [ 1242.621010] RDX: 8001 RSI: 9a6811ce RDI: [ 1242.621013] RBP: b0de41223c70 R08: 99cddf10 R09: 03c4 [ 1242.621016] R10: 0008 R11: 9ae04f2d R12: 8a6a70e76a00 [ 1242.621018] R13: 8a6a39ea18c0 R14: R15: 8a6a39ea1dfc [ 1242.621022] FS: () GS:8a6a8140(0063) knlGS:ed455b40 [ 1242.621026] CS: 0010 DS: 002b ES: 002b CR0: 80050033 [ 1242.621028] CR2: e9f68000 CR3: 0002347aa004 CR4: 003606f0 [ 1242.621032] DR0: DR1: DR2: [ 1242.621035] DR3: DR6: fffe0ff0 DR7: 0400 [ 1242.621038] Call Trace: [ 1242.621049] ? update_rq_clock+0x33/0x120 [ 1242.621053] ? compat_import_iovec+0x37/0xcd [ 1242.621058] ? __switch_to_asm+0x40/0x70 [ 1242.621061] inet_recvmsg+0x5b/0x100 [ 1242.621066] ___sys_recvmsg+0xdd/0x1e0 [ 1242.621070] ? __switch_to_asm+0x34/0x70 [ 1242.621074] ? _raw_spin_unlock_irq+0x1d/0x30 [ 1242.621077] ? finish_task_switch+0x83/0x2c0 [ 1242.621080] ? tcp_keepalive_timer.cold.3+0x19/0x19 [ 1242.621084] ? tcp_poll+0x12e/0x260 [ 1242.621086] ? sock_poll+0x61/0xb0 [ 1242.621091] ? ep_item_poll.isra.1+0x40/0xc0 [ 1242.621095] ? ep_send_events_proc+0x7b/0x1a0 [ 1242.621098] ? __ia32_sys_epoll_ctl+0x20/0x20 [ 1242.621101] ? preempt_count_add+0x68/0xa0 [ 1242.621106] ? _raw_spin_lock_irqsave+0x25/0x50 [ 1242.621112] ? __fget+0x6e/0xa0 [ 1242.621116] __sys_recvmsg+0x54/0xa0 [ 1242.621124] __ia32_compat_sys_socketcall+0x174/0x300 [ 1242.621129] ? do_epoll_wait+0x8b/0xd0 [ 1242.621135] do_fast_syscall_32+0xa7/0x2a0 [ 1242.621139] entry_SYSENTER_compat+0x7f/0x91 [ 1242.621144] ---[ end trace dc996496c7568a8f ]--- [ 1242.621232] BUG: unable to handle kernel paging request at 00020024cb72 [ 1242.621238]
Re: Kernel Panic on high bandwidth transfer over wifi
On Wed, Aug 29, 2018 at 11:42:44AM +, Nathaniel Munk wrote: > As you can see from the attached log You apparently forgot to attach the log. Willy
Kernel Panic on high bandwidth transfer over wifi
Hi all, I'm running Arch Linux on kernel 4.18.5 (same issue on both arch-provided kernel and mainline built-from-source). There is an issue whereby the kernel crashes when transferring at high bandwidths (approx 6mB/s) over a specific wifi connection. I can only reproduce the issue when using the Personal Hotspot on my iPhone 6S+, but can reproduce it very consistently on that connection. More often than not, any download reaching this speed will cause a panic, but if the download is immediately terminated at the first error the system can recover (and doing this I have obtained the attached logs). Unfortunately, I have not had access to a second machine to obtain the netconsole printout of the panic. As above, high-bandwidth transfers on other wifi networks do not cause the issue (nor on ethernet connections). As you can see from the attached log, the issue appears at tcp_recvmsg+0x579 and net_tx_action+0x1fe. At both these positions (net/ipv4/tcp.c:2000 and net/core/dev.c:4279 in mainline 4.18.5), a member of the skb struct is called. Thank you for your time (and I apologize if this is spurious or badly worded, this is my first bug report), and please don't hesitate to let me know if there's anything else I can do to help work this out. Regards, --- Nathaniel Munk nathan...@munk.com.au
