svn commit: r347151 - in head: libexec/rtld-elf sys/compat/linux sys/fs/deadfs sys/fs/nfsclient sys/fs/nullfs sys/fs/unionfs sys/kern sys/sys sys/ufs/ufs sys/vm

[Konstantin Belousov]

On Mon, May 06, 2019 at 06:56:41PM +1000, Peter Jeremy wrote:
> On 2019-May-05 11:20:44 +0000, Konstantin Belousov <kib at FreeBSD.org> wrote:
> >Log:
> >  Switch to use shared vnode locks for text files during image activation.
> 
> This seems to have broken diskless booting on my Rock64 (aarch64).
> Reverting just this commit fixes the problem.  I haven't dug into it yet.
> 
> dwc0: link state changed to DOWN
> NFS ROOT: 192.168.12.200:/tank/rock64
> dwc0: link state changed to UP
> Warning: no time-of-day clock registered, system time will not be set accurately
> Warning: no time-of-day clock registered, system time will not be set accurately
> exclusive lock of (rw) vm object @ /usr/src/sys/fs/nfsclient/nfs_clvnops.c:3431
> while share locked from /usr/src/sys/vm/vm_map.c:521
> panic: share->excl
> cpuid = 3
> time = 5
> KDB: stack backtrace:
> db_trace_self() at db_trace_self_wrapper+0x28
>          pc = 0xffff000000530cd4  lr = 0xffff0000000dedb8
>          sp = 0xffff000056b1d360  fp = 0xffff000056b1d570
> 
> db_trace_self_wrapper() at vpanic+0x18c
>          pc = 0xffff0000000dedb8  lr = 0xffff000000275b58
>          sp = 0xffff000056b1d580  fp = 0xffff000056b1d620
> 
> vpanic() at panic+0x44
>          pc = 0xffff000000275b58  lr = 0xffff000000275920
>          sp = 0xffff000056b1d630  fp = 0xffff000056b1d6b0
> 
> panic() at witness_checkorder+0x1c0
>          pc = 0xffff000000275920  lr = 0xffff0000002d8b1c
>          sp = 0xffff000056b1d6c0  fp = 0xffff000056b1d730
> 
> witness_checkorder() at _rw_wlock_cookie+0x74
>          pc = 0xffff0000002d8b1c  lr = 0xffff000000270aac
>          sp = 0xffff000056b1d740  fp = 0xffff000056b1d760
> 
> _rw_wlock_cookie() at nfs_set_text+0x34
>          pc = 0xffff000000270aac  lr = 0xffff0000001dee30
>          sp = 0xffff000056b1d770  fp = 0xffff000056b1d790
> 
> nfs_set_text() at vop_sigdefer+0x68
>          pc = 0xffff0000001dee30  lr = 0xffff00000032b5c0
>          sp = 0xffff000056b1d7a0  fp = 0xffff000056b1d7c0
> 
> vop_sigdefer() at VOP_SET_TEXT_APV+0xd4
>          pc = 0xffff00000032b5c0  lr = 0xffff0000005665ac
>          sp = 0xffff000056b1d7d0  fp = 0xffff000056b1d7f0
> 
> VOP_SET_TEXT_APV() at vm_map_entry_set_vnode_text+0x104
>          pc = 0xffff0000005665ac  lr = 0xffff00000050044c
>          sp = 0xffff000056b1d800  fp = 0xffff000056b1d850
> 
> vm_map_entry_set_vnode_text() at vmspace_fork+0x998
>          pc = 0xffff00000050044c  lr = 0xffff000000506a94
>          sp = 0xffff000056b1d860  fp = 0xffff000056b1d8b0
> 
> vmspace_fork() at fork1+0x498
>          pc = 0xffff000000506a94  lr = 0xffff0000002362cc
>          sp = 0xffff000056b1d8c0  fp = 0xffff000056b1d960
> 
> fork1() at sys_fork+0x30
>          pc = 0xffff0000002362cc  lr = 0xffff000000235e10
>          sp = 0xffff000056b1d970  fp = 0xffff000056b1d9b0
> 
> sys_fork() at do_el0_sync+0x508
>          pc = 0xffff000000235e10  lr = 0xffff00000054b694
>          sp = 0xffff000056b1d9c0  fp = 0xffff000056b1da70
> 
> do_el0_sync() at handle_el0_sync+0x84
>          pc = 0xffff00000054b694  lr = 0xffff000000533200
>          sp = 0xffff000056b1da80  fp = 0xffff000056b1db90
> 
> handle_el0_sync() at 0x221420
>          pc = 0xffff000000533200  lr = 0x0000000000221420
>          sp = 0xffff000056b1dba0  fp = 0x0000ffffffffe760
> 
> KDB: enter: panic
> [ thread pid 1 tid 100002 ]
> Stopped at      0x28d598:       undefined       54000042
> db> 

This should be fixed by r347181.