|Summary:||[panic] Fatal trap 9 while mounting SD card with lock switch on|
|Product:||Base System||Reporter:||Felix Guest <felix.the.red>|
|Component:||kern||Assignee:||freebsd-bugs (Nobody) <bugs>|
|Severity:||Affects Only Me|
Description Felix Guest 2016-11-17 06:07:40 UTC
Created attachment 177106 [details] Screencap of fatal trap 9 While trying to mount an SD card with the lock switch on (very much like PR 94838), I get a kernel panic and fatal trap 9. The difference with this PR is that they were running on 6.1-PRERELEASE, whereas I am running on 11.0-RELEASE (p2), so the condition either wasn't fixed or was reintroduced. I insert the SD card and the console shows: ugen0.7: <Generic> at usbus0 umass1: <Bulk-In, Bulk-Out, Interface> on usbus0 umass1: SCSI over Bulk-Only; quirks = 0x4000 umass1:2:1: Attached to scbus2 da1 at umass-sim1 bus 1 scbus2 target 0 lun 0 da1: <Generic- SD/MMC/MS PRO 1.00> Removable Direct Access SPC-2 SCSI device da1: Serial Number 20121112761000000 da1: 40.000MB/s transfers When I try to mount the SD card with mount -t msdosfs /dev/da1s1 /mnt I get: Fatal trap 9: general protection fault while in kernel mode cpuid = 1; apic id = 01 I'm not going to type out the panic information - I took a photo of it and it's attached to this PR. I can reliably reproduce this by inserting the SD card with the physical write protect set, trying to mount it (which fails), and then either (1) trying to unmount the device or (2) removing the SD card. I'm running on: FreeBSD laptop 11.0-RELEASE-p2 FreeBSD 11.0-RELEASE-p2 #0: Mon Oct 24 06:55:27 UTC 2016 firstname.lastname@example.org:/usr/obj/usr/src/sys/GENERIC amd64 I have the core files, if that helps. I also have a few KLDs loaded: kern.vty=vt fuse_load="YES" vboxdrv_load="YES" atapicam_load="YES" I'm willing to help troubleshoot, just let me know what you need.