AuxXxilium/linux_dsm_epyc7002
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5d26a6a615
linux_dsm_epyc7002/drivers/net/wireless
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Rafał Miłecki 5d26a6a615 brcmfmac: disable PCIe interrupts before bus reset 
Keeping interrupts on could result in brcmfmac freeing some resources
and then IRQ handlers trying to use them. That was obviously a straight
path for crashing a kernel.

Example:
CPU0                           CPU1
----                           ----
brcmf_pcie_reset
  brcmf_pcie_bus_console_read
  brcmf_detach
    ...
    brcmf_fweh_detach
    brcmf_proto_detach
                               brcmf_pcie_isr_thread
                                 ...
                                 brcmf_proto_msgbuf_rx_trigger
                                   ...
                                   drvr->proto->pd
    brcmf_pcie_release_irq

[  363.789218] Unable to handle kernel NULL pointer dereference at virtual address 00000038
[  363.797339] pgd = c0004000
[  363.800050] [00000038] *pgd=00000000
[  363.803635] Internal error: Oops: 17 [#1] SMP ARM
(...)
[  364.029209] Backtrace:
[  364.031725] [<bf243838>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from [<bf2471dc>] (brcmf_pcie_isr_thread+0x228/0x274 [brcmfmac])
[  364.043662]  r7:00000001 r6:c8ca0000 r5:00010000 r4:c7b4f800

Fixes: 4684997d9e ("brcmfmac: reset PCIe bus on a firmware crash")
Cc: stable@vger.kernel.org # v5.2+
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-11-20 09:45:35 +02:00
..
admtek adm80211: remove set but not used variables 'mem_addr' and 'io_addr' 2019-10-24 08:48:00 +03:00
ath wcn36xx: fix typo 2019-11-15 08:59:34 +02:00
atmel atmel: remove set but not used variable 'dev' 2019-10-24 08:48:31 +03:00
broadcom brcmfmac: disable PCIe interrupts before bus reset 2019-11-20 09:45:35 +02:00
cisco airo: fix memory leaks 2019-09-03 16:39:33 +03:00
intel ipw2x00: remove set but not used variable 'force_update' 2019-11-20 09:34:08 +02:00
intersil net: core: add generic lockdep keys 2019-10-24 14:53:48 -07:00
marvell wireless-drivers-next patches for 5.5 2019-11-05 18:36:35 -08:00
mediatek wireless-drivers-next patches for 5.5 2019-11-05 18:36:35 -08:00
quantenna qtnfmac: process HE capabilities requests 2019-11-20 09:43:01 +02:00
ralink rt2800: remove errornous duplicate condition 2019-11-06 19:57:00 +02:00
realtek rtw88: allows to enable/disable HCI link PS mechanism 2019-11-20 09:44:51 +02:00
rsi wireless-drivers-next patches for 5.5 2019-11-05 18:36:35 -08:00
st net/wireless: Delete unnecessary checks before the macro call “dev_kfree_skb” 2019-10-15 08:27:02 +03:00
ti wireless-drivers-next patches for 5.5 2019-11-05 18:36:35 -08:00
zydas zd1211rw: zd_usb: Use "%zu" to format size_t 2019-09-21 08:57:35 +03:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mac80211_hwsim.c mac80211_hwsim: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops 2019-11-08 10:17:33 +01:00
mac80211_hwsim.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Makefile mac80211-next: rtnetlink wifi simulation device 2018-12-05 15:31:31 +01:00
ray_cs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 416 2019-06-05 17:37:15 +02:00
ray_cs.h
rayctl.h
rndis_wlan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
virt_wifi.c virt_wifi: fix refcnt leak in module exit routine 2019-10-24 14:53:49 -07:00
wl3501_cs.c wl3501_cs: remove redundant variable rc 2019-07-24 14:45:24 +03:00
wl3501.h