svn commit: r351472 - head/sys/fs/nullfs

[Mateusz Guzik]

On 8/27/19, Cy Schubert <cy.schubert at gmail.com> wrote:
> Making progress:
>
> Unread portion of the kernel message buffer:
>
> panic: null_unlock: LK_INTERLOCK passed
> cpuid = 2
> time = 1566868081
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
> 0xfffffe0054a954e0
> vpanic() at vpanic+0x19d/frame 0xfffffe0054a95530
> panic() at panic+0x43/frame 0xfffffe0054a95590
> null_unlock() at null_unlock+0x8a/frame 0xfffffe0054a955d0
> VOP_UNLOCK_APV() at VOP_UNLOCK_APV+0x56/frame 0xfffffe0054a955f0
> unionfs_unlock() at unionfs_unlock+0x124/frame 0xfffffe0054a95650
> VOP_UNLOCK_APV() at VOP_UNLOCK_APV+0x56/frame 0xfffffe0054a95670
> vfs_domount() at vfs_domount+0xc3f/frame 0xfffffe0054a958a0
> vfs_donmount() at vfs_donmount+0x934/frame 0xfffffe0054a95940
> sys_nmount() at sys_nmount+0x69/frame 0xfffffe0054a95980
> amd64_syscall() at amd64_syscall+0x3ae/frame 0xfffffe0054a95ab0
> fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0054a95ab0
> --- syscall (378, FreeBSD ELF64, sys_nmount), rip = 0x2bed6a4a, rsp =
> 0x7fffffffe2e8, rbp = 0x7fffffffec70 ---
> Uptime: 1m35s
>

Ok, this explains everything. I did not think anyone uses unionfs,
let alone stacked on top of nullfs. I'll have a patch later.

-- 
Mateusz Guzik <mjguzik gmail.com>