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| Started by | Larry Finger <Larry.Finger@lwfinger.net> |
|---|---|
| First post | 2017-01-09 03:10 +0100 |
| Last post | 2017-01-09 03:30 +0100 |
| Articles | 2 — 2 participants |
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Re: BUG: 4.10 rtlwifi regression - NULL pointer dereference Larry Finger <Larry.Finger@lwfinger.net> - 2017-01-09 03:10 +0100
Re: BUG: 4.10 rtlwifi regression - NULL pointer dereference lkml@pengaru.com - 2017-01-09 03:30 +0100
| From | Larry Finger <Larry.Finger@lwfinger.net> |
|---|---|
| Date | 2017-01-09 03:10 +0100 |
| Subject | Re: BUG: 4.10 rtlwifi regression - NULL pointer dereference |
| Message-ID | <sXxzj-6jh-3@gated-at.bofh.it> |
On 01/08/2017 07:41 PM, lkml@pengaru.com wrote: > Hello list, > > Gave 4.10-rc2 a shot today using the attached config. The kernel panics > with a NULL pointer dereference upon starting dhclient after > wpa_supplicant. > > The network device is a USB dongle: > Bus 002 Device 002: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] > > Reverting 'ba9f93f rtlwifi: Fix enter/exit power_save' prevents the > crash. > > Sorry I don't have a verbatim capture of the panic, but I was able to > catch the relevant parts and rtl_lps_leave() is dereferencing a NULL hw, > below setup_arp_tx() and rtl_is_special_data(). That's what led me to > reverting ba9f93f since it clearly plays with that stuff. > > FWIW machine is a plain X61s thinkpad, 1.8Ghz. > You need the patch from http://marc.info/?l=linux-wireless&m=148234081512703&w=2. It was pushed with the notation that it needed to be included in 4.10; however, it has not yet percolated through the system. Larry
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| From | lkml@pengaru.com |
|---|---|
| Date | 2017-01-09 03:30 +0100 |
| Message-ID | <sXxSF-6pX-7@gated-at.bofh.it> |
| In reply to | #1554010 |
On Sun, Jan 08, 2017 at 08:03:18PM -0600, Larry Finger wrote: > On 01/08/2017 07:41 PM, lkml@pengaru.com wrote: > > Hello list, > > > > Gave 4.10-rc2 a shot today using the attached config. The kernel panics > > with a NULL pointer dereference upon starting dhclient after > > wpa_supplicant. > > > > The network device is a USB dongle: > > Bus 002 Device 002: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] > > > > Reverting 'ba9f93f rtlwifi: Fix enter/exit power_save' prevents the > > crash. > > > > Sorry I don't have a verbatim capture of the panic, but I was able to > > catch the relevant parts and rtl_lps_leave() is dereferencing a NULL hw, > > below setup_arp_tx() and rtl_is_special_data(). That's what led me to > > reverting ba9f93f since it clearly plays with that stuff. > > > > FWIW machine is a plain X61s thinkpad, 1.8Ghz. > > > > You need the patch from > http://marc.info/?l=linux-wireless&m=148234081512703&w=2. It was pushed with > the notation that it needed to be included in 4.10; however, it has not yet > percolated through the system. > Thanks for the quick response Larry, on a Sunday even! Cheers, Vito Caputo
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