Re: kern/53233: one-off kernel panic while connecting a urtwn device

[coypu%sdf.org@localhost]

The following reply was made to PR kern/53233; it has been noted by GNATS.

From: coypu%sdf.org@localhost
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/53233: one-off kernel panic while connecting a urtwn device
Date: Sun, 29 Apr 2018 20:00:15 +0000

 This is pretty easy to reproduce. I have both wpa_supplicant and dhcpcd
 running as a service, and just re-attaching the device repeatedy.
 
 I have a second backtrace too.
 
 I assume these need more sc_dying checks.
 
 urtwn0 at uhub3 port 1
 urtwn0: Realtek (0x7392) 802.11n WLAN Adapter (0x7811), rev 2.00/2.00, addr 3
 urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R, address 74:da:38:5b:6c:6c
 urtwn0: 1 rx pipe, 2 tx pipes
 urtwn0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
 urtwn0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
 uvm_fault(0xffffe401074e68a0, 0x0, 1) -> e
 fatal page fault in supervisor mode
 trap type 6 code 0 rip 0xffffffff8044a7d8 cs 0x8 rflags 0x10282 cr2 0 ilevel 0x6 rsp 0xffff800067b3db70
 curlwp 0xffffe4010e2848c0 pid 1534.1 lowest kstack 0xffff800067b3a2c0
 panic: trap
 cpu2: Begin traceback...
 vpanic() at netbsd:vpanic+0x140
 snprintf() at netbsd:snprintf
 startlwp() at netbsd:startlwp
 alltraps() at netbsd:alltraps+0xb7
 urtwn_init() at netbsd:urtwn_init+0x1dd1
 urtwn_ioctl() at netbsd:urtwn_ioctl+0xf9
 doifioctl() at netbsd:doifioctl+0x79a
 sys_ioctl() at netbsd:sys_ioctl+0x103
 syscall() at netbsd:syscall+0x1d8
 --- syscall (number 54) ---
 77f93d518bda:
 cpu2: End traceback...
 
 dumping to dev 0,1 (offset=1896, size=1013425):
 dump succeeded