Re: kern/48588: one time crash in usb_allocmem_flags

[Alexander Nasonov <alnsn%yandex.ru@localhost>]

The following reply was made to PR kern/48588; it has been noted by GNATS.

From: Alexander Nasonov <alnsn%yandex.ru@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/48588: one time crash in usb_allocmem_flags
Date: Thu, 12 Jun 2014 19:48:01 +0100

 New data point after one more X11 lockup:
 
 $ crash -M netbsd.5.core  -N netbsd.5
 Crash version 6.99.43, image version 6.99.43.
 System panicked: kernel debugging assertion "usb_valid_block_p(f->block, 
&usb_blk_fraglist)" failed: file 
"/home/alnsn/netbsd-current/src/sys/dev/usb/usb_mem.c", line 318 
usb_allocmem_flags: usb frag 0xffff800047770a80: unknown block pointer 
0xe5d04c000010106
 Backtrace from time of crash is available.
 crash> dmesg 440
 50cb8
 panic: kernel debugging assertion "usb_valid_block_p(f->block, 
&usb_blk_fraglist)" failed: file "/home/alnsn/netbsd-cur
 rent/src/sys/dev/usb/usb_mem.c", line 318 usb_allocmem_flags: usb frag 
0xffff800047770a80: unknown block pointer 0xe5d0
 4c000010106
 cpu3: Begin traceback...
 vpanic() at netbsd:vpanic+0x13c
 kern_assert() at netbsd:kern_assert+0x4f
 usb_allocmem_flags() at netbsd:usb_allocmem_flags+0x27c
 ehci_allocm() at netbsd:ehci_allocm+0x2a
 usbd_transfer() at netbsd:usbd_transfer+0x16b
 usbd_open_pipe_intr() at netbsd:usbd_open_pipe_intr+0xd4
 uhidev_open() at netbsd:uhidev_open+0xd9
 wsmux_do_open() at netbsd:wsmux_do_open+0x7d
 wsmuxopen() at netbsd:wsmuxopen+0xd6
 cdev_open() at netbsd:cdev_open+0xb2
 spec_open() at netbsd:spec_open+0x25d
 VOP_OPEN() at netbsd:VOP_OPEN+0x33
 vn_open() at netbsd:vn_open+0x1fe
 do_open() at netbsd:do_open+0x111
 do_sys_openat() at netbsd:do_sys_openat+0x68
 sys_open() at netbsd:sys_open+0x24
 syscall() at netbsd:syscall+0x9a
 --- syscall (number 5) ---
 7f7ff403be6a:
 cpu3: End traceback...
 
 dumping to dev 0,1 (offset=191719, size=1024733):
 dump