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

[Peter Jeremy]

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> 

-- 
Peter Jeremy
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