Re: kern/48588: one time crash in usb_allocmem_flags

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

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