On 10 June 2016 at 10:55, Felix Fietkau <nbd@xxxxxxxx> wrote: > On 2016-06-10 10:50, Michal Kazior wrote: >> On 9 June 2016 at 09:46, A. Benz <ash.benz@xxxxx> wrote: >>> Dear All, >>> >>> I am using LEDE on my IPQ806x (QCA9980) system (Archer C2600). >>> With compat-wireless-2016-05-12, I observed traces attached below. >>> The router is unstable and eventually reboots by itself (randomly). >>> >>> Upon reverting to compat-wireless-2016-01, the issue disappears. Nothing >>> else is changed (software-wise or hardware). >>> This was confirmed with other users. >>> >>> A new compile with the fixes below: >>> https://git.lede-project.org/?p=lede/nbd/staging.git;a=commit;h=858e26f3c0fc11231f25497cbb2ddca1e5f101e0 >>> >>> Did not solve the problem. >>> >>> Please let me know if I need to provide any further information. >>> >>> ------------[ cut here ]------------ >>> WARNING: CPU: 0 PID: 558 at >>> compat-wireless-2016-05-12/net/mac80211/rx.c:4068 >>> ieee80211_rx_napi+0x8c/0x8a4 [mac80211]() >> >> Can you post what is at rx.c line 4068 (and +/- 3 lines), please? > It's early in ieee80211_rx_napi: > > sband = local->hw.wiphy->bands[status->band]; > if (WARN_ON(!sband)) > goto drop; Thanks. > I could not easily find a scenario under which status->band would not be > set properly by the driver, so my guess is there is some nasty memory > corruption going on. Hmm.. could it be related to ath10k not fulfilling (some) NAPI's locking requirements and thus ending up with, e.g. linked-list mayhem? Michał -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
