From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5069E1E202F for ; Wed, 2 Oct 2024 09:56:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727863016; cv=none; b=tc1DR/HS/AXvODBJmWEoXY6cb0wDpaKAVzAlLYRPOgn9M2nVJcLCr+6N6mteUmE5ts9BGKlQcRsvUEtbcy1n/tY97qTZpVFO6viPrd6IYoi0/EogYFDmTdPB2DoFW6IzlP4vJjm0TklnNVOAGM2wwrccWgNO+QsxnJW7Xni0NQ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727863016; c=relaxed/simple; bh=366nUTgg57ZmeDyW70L1xnj/uwLOhNG5TB7ra3g50J0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PjUTkQk5FcFlPJchP0RiZuc4dpsWzN+YFM+9lnaEkx4Qpi3a6yMmFAXBIRep3+f/umhtmFvG65CMIbxe98BgaUl0Y5SAyrqyK7Rj+ZpA22Dd/xEFfkn5iVhrBn9yUBDG+oz8HIPX7+++1lWn3BbFqJFr/4CxWQ5Cy2yZL+Bt10A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=hAwdDn04; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="hAwdDn04" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727863014; x=1759399014; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=366nUTgg57ZmeDyW70L1xnj/uwLOhNG5TB7ra3g50J0=; b=hAwdDn04nn4Idx9QwG4d7yQlQFPp0FZ50n2zIHY5cYkUL6QW9WOmsOy7 2QjYTXqPZSHmuAAr57LrT1bYQ4E48WJbkSPTP/txJ9RhOdTBR/lpHBflc MH99d1VTKd9vghJUunFE8Ho1ApHI1GgJ78OQCzGDpOQb2t2ZBwflLoxpD 8lH8hQY9x0TPHYq8+v18oBj/Tmkx8SWmJIYhgIphzsh01mrRFB/387c97 Sii5YE9gC/I5xi2l2GrYK4D2gfJMLndUP6uQtv4bNojNXX1X9oVzlR0cY yynp6zWEMHLX/oPtekDR0wiUEAPSXWUE9U9PNl3+2BOMlGc3SPQIE8y1s Q==; X-CSE-ConnectionGUID: SjHx5SmtSQ+yL31CJWuqJw== X-CSE-MsgGUID: ns3d5pqwRQGL8TqWf1uuSA== X-IronPort-AV: E=McAfee;i="6700,10204,11212"; a="30906189" X-IronPort-AV: E=Sophos;i="6.11,171,1725346800"; d="scan'208";a="30906189" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Oct 2024 02:56:54 -0700 X-CSE-ConnectionGUID: RZ86KJM2QK2cvgqXnHBb7A== X-CSE-MsgGUID: e4PO5Kg2TguvzB2BUhdofA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,171,1725346800"; d="scan'208";a="74067426" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.74]) by fmviesa008.fm.intel.com with SMTP; 02 Oct 2024 02:56:51 -0700 Received: by stinkbox (sSMTP sendmail emulation); Wed, 02 Oct 2024 12:56:50 +0300 Date: Wed, 2 Oct 2024 12:56:50 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Kalle Valo Cc: Stanislaw Gruszka , linux-wireless@vger.kernel.org Subject: Re: [PATCH v2] iwlegacy: Clear stale interrupts before resuming device Message-ID: References: <20240930122924.21865-1-ville.syrjala@linux.intel.com> <20241001200745.8276-1-ville.syrjala@linux.intel.com> <20241002064952.GA15679@wp.pl> <87frpf6iin.fsf@kernel.org> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <87frpf6iin.fsf@kernel.org> X-Patchwork-Hint: comment On Wed, Oct 02, 2024 at 11:01:04AM +0300, Kalle Valo wrote: > Stanislaw Gruszka writes: > > > On Tue, Oct 01, 2024 at 11:07:45PM +0300, Ville Syrjala wrote: > > > >> From: Ville Syrjälä > >> > >> iwl4965 fails upon resume from hibernation on my laptop. The reason > >> seems to be a stale interrupt which isn't being cleared out before > >> interrupts are enabled. We end up with a race beween the resume > >> trying to bring things back up, and the restart work (queued form > >> the interrupt handler) trying to bring things down. Eventually > >> the whole thing blows up. > >> > >> Fix the problem by clearing out any stale interrupts before > >> interrupts get enabled during resume. > >> > >> Here's a debug log of the indicent: > >> [ 12.042589] ieee80211 phy0: il_isr ISR inta 0x00000080, enabled 0xaa00008b, fh 0x00000000 > >> [ 12.042625] ieee80211 phy0: il4965_irq_tasklet inta 0x00000080, enabled 0x00000000, fh 0x00000000 > >> [ 12.042651] iwl4965 0000:10:00.0: RF_KILL bit toggled to enable radio. > >> [ 12.042653] iwl4965 0000:10:00.0: On demand firmware reload > >> [ 12.042690] ieee80211 phy0: il4965_irq_tasklet End inta 0x00000000, > >> enabled 0xaa00008b, fh 0x00000000, flags 0x00000282 > >> [ 12.052207] ieee80211 phy0: il4965_mac_start enter > >> [ 12.052212] ieee80211 phy0: il_prep_station Add STA to driver ID 31: ff:ff:ff:ff:ff:ff > >> [ 12.052244] ieee80211 phy0: il4965_set_hw_ready hardware ready > >> [ 12.052324] ieee80211 phy0: il_apm_init Init card's basic functions > >> [ 12.052348] ieee80211 phy0: il_apm_init L1 Enabled; Disabling L0S > >> [ 12.055727] ieee80211 phy0: il4965_load_bsm Begin load bsm > >> [ 12.056140] ieee80211 phy0: il4965_verify_bsm Begin verify bsm > >> [ 12.058642] ieee80211 phy0: il4965_verify_bsm BSM bootstrap uCode image OK > >> [ 12.058721] ieee80211 phy0: il4965_load_bsm BSM write complete, poll 1 iterations > >> [ 12.058734] ieee80211 phy0: __il4965_up iwl4965 is coming up > >> [ 12.058737] ieee80211 phy0: il4965_mac_start Start UP work done. > >> [ 12.058757] ieee80211 phy0: __il4965_down iwl4965 is going down > >> [ 12.058761] ieee80211 phy0: il_scan_cancel_timeout Scan cancel timeout > >> [ 12.058762] ieee80211 phy0: il_do_scan_abort Not performing scan to abort > >> [ 12.058765] ieee80211 phy0: il_clear_ucode_stations Clearing ucode stations in driver > >> [ 12.058767] ieee80211 phy0: il_clear_ucode_stations No active stations found to be cleared > >> [ 12.058819] ieee80211 phy0: _il_apm_stop Stop card, put in low power state > >> [ 12.058827] ieee80211 phy0: _il_apm_stop_master stop master > >> [ 12.058864] ieee80211 phy0: il4965_clear_free_frames 0 frames on pre-allocated heap on clear. > >> [ 12.058869] ieee80211 phy0: Hardware restart was requested > >> [ 16.132299] iwl4965 0000:10:00.0: START_ALIVE timeout after 4000ms. > >> [ 16.132303] ------------[ cut here ]------------ > >> [ 16.132304] Hardware became unavailable upon resume. This could be > >> a software issue prior to suspend or a hardware issue. > >> [ 16.132338] WARNING: CPU: 0 PID: 181 at net/mac80211/util.c:1826 ieee80211_reconfig+0x8f/0x14b0 [mac80211] > >> [ 16.132390] Modules linked in: ctr ccm sch_fq_codel xt_tcpudp > >> xt_multiport xt_state iptable_filter iptable_nat nf_nat nf_conntrack > >> nf_defrag_ipv4 ip_tables x_tables binfmt_misc joydev mousedev btusb > >> btrtl btintel btbcm bluetooth ecdh_generic ecc iTCO_wdt i2c_dev > >> iwl4965 iwlegacy coretemp snd_hda_codec_analog pcspkr psmouse > >> mac80211 snd_hda_codec_generic libarc4 sdhci_pci cqhci > >> sha256_generic sdhci libsha256 firewire_ohci snd_hda_intel > >> snd_intel_dspcfg mmc_core snd_hda_codec snd_hwdep firewire_core > >> led_class iosf_mbi snd_hda_core uhci_hcd lpc_ich crc_itu_t cfg80211 > >> ehci_pci ehci_hcd snd_pcm usbcore mfd_core rfkill snd_timer snd > >> usb_common soundcore video parport_pc parport intel_agp wmi > >> intel_gtt backlight e1000e agpgart evdev > >> [ 16.132456] CPU: 0 UID: 0 PID: 181 Comm: kworker/u8:6 Not tainted 6.11.0-cl+ #143 > >> [ 16.132460] Hardware name: Hewlett-Packard HP Compaq 6910p/30BE, BIOS 68MCU Ver. F.19 07/06/2010 > >> [ 16.132463] Workqueue: async async_run_entry_fn > >> [ 16.132469] RIP: 0010:ieee80211_reconfig+0x8f/0x14b0 [mac80211] > >> [ 16.132501] Code: da 02 00 00 c6 83 ad 05 00 00 00 48 89 df e8 98 > >> 1b fc ff 85 c0 41 89 c7 0f 84 e9 02 00 00 48 c7 c7 a0 e6 48 a0 e8 d1 > >> 77 c4 e0 <0f> 0b eb 2d 84 c0 0f 85 8b 01 00 00 c6 87 ad 05 00 00 00 > >> e8 69 1b > >> [ 16.132504] RSP: 0018:ffffc9000029fcf0 EFLAGS: 00010282 > >> [ 16.132507] RAX: 0000000000000000 RBX: ffff8880072008e0 RCX: 0000000000000001 > >> [ 16.132509] RDX: ffffffff81f21a18 RSI: 0000000000000086 RDI: 0000000000000001 > >> [ 16.132510] RBP: ffff8880072003c0 R08: 0000000000000000 R09: 0000000000000003 > >> [ 16.132512] R10: 0000000000000000 R11: ffff88807e5b0000 R12: 0000000000000001 > >> [ 16.132514] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ffffff92 > >> [ 16.132515] FS: 0000000000000000(0000) GS:ffff88807c200000(0000) knlGS:0000000000000000 > >> [ 16.132517] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > >> [ 16.132519] CR2: 000055dd43786c08 CR3: 000000000978f000 CR4: 00000000000006f0 > >> [ 16.132521] Call Trace: > >> [ 16.132525] > >> [ 16.132526] ? __warn+0x77/0x120 > >> [ 16.132532] ? ieee80211_reconfig+0x8f/0x14b0 [mac80211] > >> [ 16.132564] ? report_bug+0x15c/0x190 > >> [ 16.132568] ? handle_bug+0x36/0x70 > >> [ 16.132571] ? exc_invalid_op+0x13/0x60 > >> [ 16.132573] ? asm_exc_invalid_op+0x16/0x20 > >> [ 16.132579] ? ieee80211_reconfig+0x8f/0x14b0 [mac80211] > >> [ 16.132611] ? snd_hdac_bus_init_cmd_io+0x24/0x200 [snd_hda_core] > >> [ 16.132617] ? pick_eevdf+0x133/0x1c0 > >> [ 16.132622] ? check_preempt_wakeup_fair+0x70/0x90 > >> [ 16.132626] ? wakeup_preempt+0x4a/0x60 > >> [ 16.132628] ? ttwu_do_activate.isra.0+0x5a/0x190 > >> [ 16.132632] wiphy_resume+0x79/0x1a0 [cfg80211] > >> [ 16.132675] ? wiphy_suspend+0x2a0/0x2a0 [cfg80211] > >> [ 16.132697] dpm_run_callback+0x75/0x1b0 > >> [ 16.132703] device_resume+0x97/0x200 > >> [ 16.132707] async_resume+0x14/0x20 > >> [ 16.132711] async_run_entry_fn+0x1b/0xa0 > >> [ 16.132714] process_one_work+0x13d/0x350 > >> [ 16.132718] worker_thread+0x2be/0x3d0 > >> [ 16.132722] ? cancel_delayed_work_sync+0x70/0x70 > >> [ 16.132725] kthread+0xc0/0xf0 > >> [ 16.132729] ? kthread_park+0x80/0x80 > >> [ 16.132732] ret_from_fork+0x28/0x40 > >> [ 16.132735] ? kthread_park+0x80/0x80 > >> [ 16.132738] ret_from_fork_asm+0x11/0x20 > >> [ 16.132741] > >> [ 16.132742] ---[ end trace 0000000000000000 ]--- > >> [ 16.132930] ------------[ cut here ]------------ > >> [ 16.132932] WARNING: CPU: 0 PID: 181 at net/mac80211/driver-ops.c:41 drv_stop+0xe7/0xf0 [mac80211] > >> [ 16.132957] Modules linked in: ctr ccm sch_fq_codel xt_tcpudp > >> xt_multiport xt_state iptable_filter iptable_nat nf_nat nf_conntrack > >> nf_defrag_ipv4 ip_tables x_tables binfmt_misc joydev mousedev btusb > >> btrtl btintel btbcm bluetooth ecdh_generic ecc iTCO_wdt i2c_dev > >> iwl4965 iwlegacy coretemp snd_hda_codec_analog pcspkr psmouse > >> mac80211 snd_hda_codec_generic libarc4 sdhci_pci cqhci > >> sha256_generic sdhci libsha256 firewire_ohci snd_hda_intel > >> snd_intel_dspcfg mmc_core snd_hda_codec snd_hwdep firewire_core > >> led_class iosf_mbi snd_hda_core uhci_hcd lpc_ich crc_itu_t cfg80211 > >> ehci_pci ehci_hcd snd_pcm usbcore mfd_core rfkill snd_timer snd > >> usb_common soundcore video parport_pc parport intel_agp wmi > >> intel_gtt backlight e1000e agpgart evdev > >> [ 16.133014] CPU: 0 UID: 0 PID: 181 Comm: kworker/u8:6 Tainted: G W 6.11.0-cl+ #143 > >> [ 16.133018] Tainted: [W]=WARN > >> [ 16.133019] Hardware name: Hewlett-Packard HP Compaq 6910p/30BE, BIOS 68MCU Ver. F.19 07/06/2010 > >> [ 16.133021] Workqueue: async async_run_entry_fn > >> [ 16.133025] RIP: 0010:drv_stop+0xe7/0xf0 [mac80211] > >> [ 16.133048] Code: 48 85 c0 74 0e 48 8b 78 08 89 ea 48 89 de e8 e0 > >> 87 04 00 65 ff 0d d1 de c4 5f 0f 85 42 ff ff ff e8 be 52 c2 e0 e9 38 > >> ff ff ff <0f> 0b 5b 5d c3 0f 1f 40 00 41 54 49 89 fc 55 53 48 89 f3 > >> 2e 2e 2e > >> [ 16.133050] RSP: 0018:ffffc9000029fc50 EFLAGS: 00010246 > >> [ 16.133053] RAX: 0000000000000000 RBX: ffff8880072008e0 RCX: ffff88800377f6c0 > >> [ 16.133054] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8880072008e0 > >> [ 16.133056] RBP: 0000000000000000 R08: ffffffff81f238d8 R09: 0000000000000000 > >> [ 16.133058] R10: ffff8880080520f0 R11: 0000000000000000 R12: ffff888008051c60 > >> [ 16.133060] R13: ffff8880072008e0 R14: 0000000000000000 R15: ffff8880072011d8 > >> [ 16.133061] FS: 0000000000000000(0000) GS:ffff88807c200000(0000) knlGS:0000000000000000 > >> [ 16.133063] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > >> [ 16.133065] CR2: 000055dd43786c08 CR3: 000000000978f000 CR4: 00000000000006f0 > >> [ 16.133067] Call Trace: > >> [ 16.133069] > >> [ 16.133070] ? __warn+0x77/0x120 > >> [ 16.133075] ? drv_stop+0xe7/0xf0 [mac80211] > >> [ 16.133098] ? report_bug+0x15c/0x190 > >> [ 16.133100] ? handle_bug+0x36/0x70 > >> [ 16.133103] ? exc_invalid_op+0x13/0x60 > >> [ 16.133105] ? asm_exc_invalid_op+0x16/0x20 > >> [ 16.133109] ? drv_stop+0xe7/0xf0 [mac80211] > >> [ 16.133132] ieee80211_do_stop+0x55a/0x810 [mac80211] > >> [ 16.133161] ? fq_codel_reset+0xa5/0xc0 [sch_fq_codel] > >> [ 16.133164] ieee80211_stop+0x4f/0x180 [mac80211] > >> [ 16.133192] __dev_close_many+0xa2/0x120 > >> [ 16.133195] dev_close_many+0x90/0x150 > >> [ 16.133198] dev_close+0x5d/0x80 > >> [ 16.133200] cfg80211_shutdown_all_interfaces+0x40/0xe0 [cfg80211] > >> [ 16.133223] wiphy_resume+0xb2/0x1a0 [cfg80211] > >> [ 16.133247] ? wiphy_suspend+0x2a0/0x2a0 [cfg80211] > >> [ 16.133269] dpm_run_callback+0x75/0x1b0 > >> [ 16.133273] device_resume+0x97/0x200 > >> [ 16.133277] async_resume+0x14/0x20 > >> [ 16.133280] async_run_entry_fn+0x1b/0xa0 > >> [ 16.133283] process_one_work+0x13d/0x350 > >> [ 16.133287] worker_thread+0x2be/0x3d0 > >> [ 16.133290] ? cancel_delayed_work_sync+0x70/0x70 > >> [ 16.133294] kthread+0xc0/0xf0 > >> [ 16.133296] ? kthread_park+0x80/0x80 > >> [ 16.133299] ret_from_fork+0x28/0x40 > >> [ 16.133302] ? kthread_park+0x80/0x80 > >> [ 16.133304] ret_from_fork_asm+0x11/0x20 > >> [ 16.133307] > >> [ 16.133308] ---[ end trace 0000000000000000 ]--- > >> [ 16.133335] ieee80211 phy0: PM: dpm_run_callback(): wiphy_resume [cfg80211] returns -110 > >> [ 16.133360] ieee80211 phy0: PM: failed to restore async: error -110 > >> > >> v2: Clear only in il_pci_resume() instead of il_enable_interrupts() > >> to miminize changes to runtime behaviour > > In wireless we don't include the list of changes so I'll remove this. Ack. I was wondering about that since most commits in the wireless code didn't seem to have one, but there were some counterexamples as well. Maybe I'll remember for the next time, maybe not :) -- Ville Syrjälä Intel