On Wed, 2022-03-30 at 18:49 +0700, Bagas Sanjaya wrote: > > [ 1152.928312] UBSAN: invalid-load in net/mac80211/status.c:1164:21 > [ 1152.928318] load of value 255 is not a valid value for type '_Bool' That's loading status->is_valid_ack_signal, it seems. Note how that's in a union, shadowed by the 0x00ff0000'00000000 byte of the control.vif pointer (if I'm counting bytes correctly). That's kind of expected to be 0xff. > [ 1152.928323] CPU: 1 PID: 857 Comm: rs:main Q:Reg Not tainted 5.17.1-kernelorg-stable-generic #1 > [ 1152.928329] Hardware name: Acer Aspire E5-571/EA50_HB , BIOS V1.04 05/06/2014 > [ 1152.928331] Call Trace: > [ 1152.928334] <TASK> > [ 1152.928338] dump_stack_lvl+0x4c/0x63 > [ 1152.928350] dump_stack+0x10/0x12 > [ 1152.928354] ubsan_epilogue+0x9/0x45 > [ 1152.928359] __ubsan_handle_load_invalid_value.cold+0x44/0x49 > [ 1152.928365] ieee80211_tx_status_ext.cold+0xa3/0xb8 [mac80211] > [ 1152.928467] ieee80211_tx_status+0x7d/0xa0 [mac80211] > [ 1152.928535] ath_txq_unlock_complete+0x15c/0x170 [ath9k] > [ 1152.928553] ath_tx_edma_tasklet+0xe5/0x4c0 [ath9k] > [ 1152.928567] ath9k_tasklet+0x14e/0x280 [ath9k] Which sort of means that ath9k isn't setting up the status area correctly? > The bisection process, starting from v5.17 (the first tag with the warning), > found first 'oops' commit at 837d9e49402eaf (net: phy: marvell: Fix invalid > comparison in the resume and suspend functions, 2022-03-12). However, since > the commit didn't touch net/mac80211/status.c, it wasn't the root cause > commit. Well you'd look for something in ath9k, I guess. But you didn't limit the bisect, so not sure why it went off into the weeds. Maybe you got one of them wrong. > The latest commit that touch the file in question is commit > ea5907db2a9ccf (mac80211: fix struct ieee80211_tx_info size, 2022-02-02). That's after 5.17 though, and it replaced the bool by just a flag. Seems to me ath9k should use something like ieee80211_tx_info_clear_status() or do the memset by itself? This bug would now not be reported, but it might report the flag erroneously. johannes
