Hi, I looked into this, it's quite an old bug and you were unlucky to run into it, there's a very small window of opportunity for it to occur. I'll see about fixing it.
Thanks, Andrew On Thu, Mar 19, 2020 at 02:51:05PM -0700, David Hopper wrote: > I just got this using today's kernel+userland during a pkgsrc Rust > compilation while updating Firefox (pkgsrc also today's). ?System is a > ThinkPad P53, i9 9880H and 48GB RAM: > > [ 8734.5350365] panic: kernel diagnostic assertion "l->l_refcnt != 0" failed: > file "/usr/src/sys/kern/kern_lwp.c", line 1701 > [ 8734.5350365] cpu2: begin traceback... > [ 8734.5350365] vpanic() at netbsd:vpanic+0x178 > [ 8734.5350365] kern_assert() at netbsd:kern_assert+0x48 > [ 8734.5350365] lwp_addref() at netbsd:lwp_addref+0xbc > [ 8734.5350365] procfs_rw() at netbsd:procfs_rw+0xeb > [ 8734.5350365] VOP_READ() at netbsd:VOP_READ+0x53 > [ 8734.5350365] vn_read() at netbsd:vn_read+0x88 > [ 8734.5350365] dofileread() at netbsd:dofileread+0x8c > [ 8734.5350365] sys_read() at netbsd:sys_read+0x49 > [ 8734.5350365] syscall() at netbsd:syscall+0x299 > [ 8734.5350365] --- syscall (number 3) --- > [ 8734.5350365] 7519d7a42baa: > [ 8734.5350365] cpu2: End traceback... > [ 8734.5350365] Mutex error: mutex_vector_enter,542: locking against myself > [ 8734.5350365] lock address : 0xffffced93d804b00 > [ 8734.5350365] current cpu ?: ? ? ? ? ? ? ? ? ?2 > [ 8734.5350365] current lwp ?: 0xffffced7c1ce42c0 > [ 8734.5350365] owner field ?: 0xffffced7c1ce42c0 wait/spin: ? ? ? ? ? ? ? > ?0/0 > [ 8734.5350365] Skipping crash dump on recursive panic > [ 8734.5350365] panic: lock error: Mutex: mutex_vector_enter,542: locking > against myself: lock 0xffffced93d804b00 cpu 2 lwp 0xffffced7c1ce42c0 > [ 8734.5350365] cpu2: Begin traceback... > [ 8734.5350365] vpanic() at netbsd:vpanic+0x178 > [ 8734.5350365] snprintf() at netbsd:snprintf > [ 8734.5350620] lockdebug_abort() at netbsd:lockdebug_abort+0xe6 > [ 8734.5350620] mutex_vector_enter() at netbsd:mutex_vector_enter+0x3c1 > [ 8734.5350620] suspendsched() at netbsd:suspendsched+0xf5 > [ 8734.5350620] cpu_reboot() at netbsd:cpu_reboot+0x46 > [ 8734.5350620] sys_reboot() at netbsd:sys_reboot > [ 8734.5350620] vpanic() at netbsd:vpanic+0x181 > [ 8734.5350620] kern_assert() at netbsd:kern_assert+0x48 > [ 8734.5350620] lwp_addref() at netbsd:lwp_addref+0xbc > [ 8734.5350620] procfs_rw() at netbsd:procfs_rw+0xeb > [ 8734.5350620] VOP_READ() at netbsd:VOP_READ+0x53 > [ 8734.5350620] vn_read() at netbsd:vn_read+0x88 > [ 8734.5350620] dofileread() at netbsd:dofileread+0x8c > [ 8734.5350620] sys_read() at netbsd:sys_read+0x49 > [ 8734.5350620] syscall() at netbsd:syscall+0x299 > [ 8734.5350620] --- syscall (number 3) --- > [ 8734.5350620] 7519d7a42baa: > [ 8734.5350620] cpu2: End traceback... > > Let me know if there's anything else needed. > David > > > >
