Hi All, While testing 6.0-rc1 on a Dell Latitude E6430 with: 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) wifi, I noticed the following WARN()/backtrace: [ 563.888583] ------------[ cut here ]------------ [ 563.889447] WARNING: CPU: 0 PID: 0 at net/mac80211/rx.c:3993 ieee80211_rx_handlers+0x230/0x2a70 [mac80211] [ 563.890463] Modules linked in: snd_seq_dummy snd_hrtimer rfcomm btusb bnep intel_rapl_msr ppdev at24 mei_wdt mei_pxp mei_hdcp iTCO_wdt intel_pmc_bxt iTCO_vendor_support dell_laptop intel_rapl_common dell_smm_hwmon x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel vfat fat kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rapl intel_cstate intel_uncore btrtl btbcm btintel btmtk uvcvideo bluetooth dell_wmi videobuf2_vmalloc videobuf2_memops dell_smbios videobuf2_v4l2 dcdbas option joydev videobuf2_common usb_wwan iwldvm dell_wmi_descriptor sparse_keymap wmi_bmof ecdh_generic videodev mac80211 mc pcspkr libarc4 iwlwifi iwlmei cfg80211 snd_hda_codec_idt snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel parport_pc parport snd_intel_dspcfg dell_smo8800 snd_intel_sdw_acpi i915 snd_hda_codec dell_rbtn snd_seq rfkill snd_hda_core snd_seq_device snd_hwdep snd_pcm i2c_i801 i2c_smbus lpc_ich e1000e snd_timer snd drm_buddy mei_me soundcore mei ip_tables [ 563.890692] nouveau crc32c_intel usb_storage sdhci_pci cqhci sdhci mmc_core serio_raw drm_ttm_helper ttm mxm_wmi drm_display_helper cec video wmi i2c_dev fuse [last unloaded: btusb] [ 563.893158] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 6.0.0-rc1+ #99 [ 563.893633] Hardware name: Dell Inc. Latitude E6430/0H3MT5, BIOS A21 05/08/2017 [ 563.894099] RIP: 0010:ieee80211_rx_handlers+0x230/0x2a70 [mac80211] [ 563.894620] Code: 00 00 84 c0 0f 84 a4 05 00 00 48 8b 43 18 41 8b 57 70 49 8b b7 d0 00 00 00 48 8b b8 08 09 00 00 e8 e5 e3 ed ff e9 12 06 00 00 <0f> 0b 44 89 f6 48 89 df e8 83 f1 ff ff 48 8b 45 00 48 39 c5 74 09 [ 563.895665] RSP: 0018:ffffb7cc40003cd0 EFLAGS: 00010246 [ 563.896203] RAX: ffff95ea229e0f00 RBX: ffffb7cc40003da0 RCX: ffff95e886f5ab00 [ 563.896759] RDX: ffffb7cc40003df0 RSI: 0000000000000028 RDI: ffff95e884f61688 [ 563.897312] RBP: ffffb7cc40003df0 R08: 0000000000000001 R09: 0000000000000000 [ 563.897871] R10: ffff95e88396a580 R11: 0000000000000001 R12: 0000000000000000 [ 563.898422] R13: ffffb7cc40003df0 R14: 0000000000000002 R15: ffff95e889a17200 [ 563.898975] FS: 0000000000000000(0000) GS:ffff95ea24200000(0000) knlGS:0000000000000000 [ 563.899559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 563.900132] CR2: 00007f27e270c000 CR3: 00000000b4c26003 CR4: 00000000001706f0 [ 563.900731] Call Trace: [ 563.901319] <IRQ> [ 563.901915] ? rcu_read_lock_sched_held+0x10/0x80 [ 563.902530] ? lock_release+0x1ef/0x2d0 [ 563.903128] ? rcu_read_lock_sched_held+0x10/0x80 [ 563.903755] ? lock_acquire+0x255/0x2b0 [ 563.904368] ? rcu_read_lock_sched_held+0x10/0x80 [ 563.904994] ? lock_release+0x1ef/0x2d0 [ 563.905637] ? ieee80211_sta_reorder_release.isra.0+0x2ea/0x380 [mac80211] [ 563.906308] ieee80211_release_reorder_timeout+0x129/0x1a0 [mac80211] [ 563.906997] ? lock_acquire+0x255/0x2b0 [ 563.907667] ? lock_acquire+0x255/0x2b0 [ 563.908318] ? perf_event_task_tick+0x7d/0x430 [ 563.908980] ? sta_rx_agg_session_timer_expired+0x70/0x70 [mac80211] [ 563.909694] ? sta_rx_agg_session_timer_expired+0x70/0x70 [mac80211] [ 563.910396] sta_rx_agg_reorder_timer_expired+0x45/0xd0 [mac80211] [ 563.911107] call_timer_fn+0x95/0x2a0 [ 563.911810] __run_timers.part.0+0x1cd/0x2b0 [ 563.912507] ? lock_release+0x1ef/0x2d0 [ 563.913192] ? sched_clock_cpu+0xb/0xc0 [ 563.913904] run_timer_softirq+0x31/0x70 [ 563.914623] __do_softirq+0xf5/0x54d [ 563.915317] __irq_exit_rcu+0xed/0x160 [ 563.916015] irq_exit_rcu+0xa/0x30 [ 563.916720] sysvec_apic_timer_interrupt+0x9e/0xc0 [ 563.917406] </IRQ> [ 563.918084] <TASK> [ 563.918766] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 563.919430] RIP: 0010:cpuidle_enter_state+0xeb/0x320 [ 563.920091] Code: 1b e2 5e ff 45 84 ff 74 16 9c 58 0f 1f 40 00 f6 c4 02 0f 85 05 02 00 00 31 ff e8 20 8a 66 ff e8 8b cc 6d ff fb 0f 1f 44 00 00 <45> 85 ed 0f 88 e2 00 00 00 49 63 cd 4c 89 f2 48 8d 04 49 48 8d 04 [ 563.921504] RSP: 0018:ffffffffa3c03e50 EFLAGS: 00000246 [ 563.922221] RAX: 0000000080000001 RBX: ffffd7cc3fc02d80 RCX: 0000000000000000 [ 563.922963] RDX: 000000834a5f9154 RSI: ffffffffa38b0b6c RDI: ffffffffa2b689d5 [ 563.923710] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 [ 563.924422] R10: 0000000000000000 R11: 00000000000008ae R12: ffffffffa3ec8040 [ 563.925125] R13: 0000000000000005 R14: 000000834a5f9154 R15: 0000000000000000 [ 563.925836] ? cpuidle_enter_state+0xe5/0x320 [ 563.926526] cpuidle_enter+0x29/0x40 [ 563.927174] do_idle+0x202/0x290 [ 563.927836] cpu_startup_entry+0x19/0x20 [ 563.928466] rest_init+0xeb/0x170 [ 563.929080] arch_call_rest_init+0xa/0x14 [ 563.929708] start_kernel+0x97f/0x993 [ 563.930310] secondary_startup_64_no_verify+0xe5/0xeb [ 563.930885] </TASK> [ 563.931396] irq event stamp: 484676 [ 563.931909] hardirqs last enabled at (484675): [<ffffffffa21d4add>] tick_nohz_idle_exit+0x6d/0x140 [ 563.932430] hardirqs last disabled at (484676): [<ffffffffa2eb2123>] __schedule+0xdd3/0x1670 [ 563.932951] softirqs last enabled at (484598): [<ffffffffa20fbcbd>] __irq_exit_rcu+0xed/0x160 [ 563.933474] softirqs last disabled at (484591): [<ffffffffa20fbcbd>] __irq_exit_rcu+0xed/0x160 [ 563.933996] ---[ end trace 0000000000000000 ]--- FWIW this happened some time after a suspend/resume, but I don't think it is actually suspend/resume related. Regards, Hans
