+ Abhishek
Vjaceslavs Klimovs <vklim...@gmail.com> writes:
> With 5.1 and head kernel, machine running as AP with qca9984 locks up
> without being able to complete stack trace to console after a client
> tries to associate with it. Following are (OCR transcribed) error
> messages:
>
> [ 177.161539] BUG: unable to handle kernel paging request at fffffffffffff7bo
> [ 177.161553] #PF error: (normal kernel read fault)
> [ 177.161561] PGD 703812067 P4D 703812067 PUD 20381406 PMD 0
> [ 177.161571] Oops: 0000 (#1) SMP PTI
> [ 177.161577] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G OE 5.1.3-gentoo #1
>
> [Garbage on screen after that point]
>
> and
>
> [67.805490] RBP: ffff9c4c57983d 18 R08: 0000000000000000 R09:
> 0000000000000000 [67.805501] R10: 0000000000000002 R11:
> 0000000000000000 R12: 0000000000000001 [67.805512] R13:
> 0000000000000000 R14: 0000000000060002 R15: 0000000000000000
> [67.805523] FS: 000000000000000000000) GS:ffff9c4c57980000 (0000)
> knIGS:000000000 [67.805535] CS: 0010 DS: 0000 ES: 0000 CRO:
> 0000000080050033
> [67.805544] CR2: fffffffffffff7b0 CR3: 00000005f7e0e006 CR4: 00000000003606e0
> [67.805555] DRO: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000 [67.805566] DR3: 0000000000000000 DR6:
> 00000000fffeoffO DR7: 0000000000000400 [67.805577] Call Trace:
> [67.805582] <IRQ>
> [67.805592] ath10k_htt_t2h_msg_handler+0xbda/0xf80 [ath10k_core]
> [67.805603] ? _raw_spin_unlock_bh+0xie/0x20
> [67.805614] ? ath1ok_ce_per_engine_service+0xf1/0x100 [ath10k_corel
> [67.805626] ath10k_pci_htt_rx_cb+0x172/0x260 [ath10k_pci]
> [67.8056391] ath10k_ce_per_engine_service+0x9e/0x100 [ath10k_core)
>
> [Garbage on screen after that point]
>
> The issue does not reproduce on 5.0.17 but is reliably reproducible in
> 5.1+ by just trying to associate to that AP. So I thought I'd run git
> bisect. After bisecting,
>
> 6ddc3860a5668808bacbfcb1f1bf50d5d7ad1956, ath10k: add support for ack
> rssi value of data tx packets
>
> is the first commit that triggers the problem. Reverting that commit
> from head or from 5.1.5 reliably makes everything work as expected.
Thank you for the bisect, this is really helpful. Full commit log below.
Abhishek, please fix this or send a revert for 5.2.
commit 6ddc3860a5668808bacbfcb1f1bf50d5d7ad1956
Author: Abhishek Ambure <aamb...@codeaurora.org>
AuthorDate: Mon Feb 25 11:45:48 2019 +0200
Commit: Kalle Valo <kv...@codeaurora.org>
CommitDate: Tue Feb 26 14:58:06 2019 +0200
ath10k: add support for ack rssi value of data tx packets
In WCN3990, WMI_TLV_SERVICE_TX_DATA_MGMT_ACK_RSSI service Indicates that
the firmware has the capability to send the RSSI value of the ACK for all
data and management packets transmitted.
If WMI_RSRC_CFG_FLAG_TX_ACK_RSSI is set in host capability then firmware
sends RSSI value in "data" tx completion event. Host extracts ack rssi
values of data packets from their tx completion event.
Tested HW: WCN3990
Tested FW: WLAN.HL.2.0-01617-QCAHLSWMTPLZ-1
Signed-off-by: Abhishek Ambure <aamb...@codeaurora.org>
Signed-off-by: Kalle Valo <kv...@codeaurora.org>
--
Kalle Valo
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