USB-related problem

[Eugene Grosbein]

On 09.11.2015 00:44, Adrian Chadd wrote:
> hiya,
> 
> try updating. I committed a workaround fix yesterday.

I've updated today, its r290541. But I have custom kernel config
and custom build script, it uses nanobsd(8).

I cannot make the kernel to panic anymore, it just freezes while writing to UFS/USB.
Userland stops responding to console and kernel stops responding to pings.
But I can break to KDB using ALT_BREAK_TO_DEBUGGER sequence:

db> show alllock
Process v87 (pkg-static) thread 0x82c5c000 (100057)
exclusive lockmgr ufs (ufs) r = 0 (0x84cc54b4) locked @ /home/src/sys/kern/vfs_vnops.c:873
Process 14 (syncer) thread 0x809f4360 (100036)
exclusive lockmgr bufwait (bufwait) r = 0 (0xc3036450) locked @ /home/src/sys/kern/vfs_bio.c:1454
exclusive lockmgr bufwait (bufwait) r = 0 (0xc30366e0) locked @ /home/src/sys/kern/vfs_default.c:671
exclusive lockmgr devfs (devfs) r = 0 (0x82c72c94) locked @ /home/src/sys/kern/vfs_subr.c:1779