Re: [ARM32] panic when sshd responding

["Andy Shevchenko" <andy.shevchenko%gmail.com@localhost>]

On Wed, Jul 2, 2008 at 6:09 PM, Chuck Silvers <chuq%chuq.com@localhost> wrote:

netbsd-current (20080703) + fast soft interrupts patchset / OMAP H4 ->

...
We recommend creating a non-root account and using su(1) for root access.
# /usr/libexec/ftpd
# /usr/sbin/sshd
panic: kernel diagnostic assertion "pg->mdpage.kro_mappings == 0"
failed: file "/home/andy/prj/netbsd/netbsd-current/sys/arch/arm/arm32/pmap.c",
line 3115
Stopped in pid 47.1 (sshd) at   netbsd:cpu_Debugger+0x4:        bx      r14


db> bt
netbsd:panic+0x14
        scp=0x80412ca8 rlv=0x8049bf88 (netbsd:__kernassert+0x44)
        rsp=0x82973748 rfp=0x8297375c
netbsd:__kernassert+0xc
        scp=0x8049bf50 rlv=0x8047ef58 (netbsd:pmap_kenter_pa+0x354)
        rsp=0x82973760 rfp=0x82973798
        r4=0x00000000
netbsd:pmap_kenter_pa+0x10
        scp=0x8047ec14 rlv=0x803bc8fc (netbsd:uvm_pagermapin+0x1b4)
        rsp=0x8297379c rfp=0x829737ec
        r10=0x8054edb0 r9=0x8054edb8
        r8=0x00000003 r7=0x00001000 r6=0x829738bc r5=0x81882000
        r4=0x81142e90
netbsd:uvm_pagermapin+0x10
        scp=0x803bc758 rlv=0x8045bca8 (netbsd:genfs_getpages+0xc50)
        rsp=0x829737f0 rfp=0x8297394c
        r10=0x00000008 r9=0x00001802
        r8=0x00000000 r7=0x829738b4 r6=0x00002000 r5=0x00000000
        r4=0x00002000
netbsd:genfs_getpages+0x10
        scp=0x8045b068 rlv=0x80364bac (netbsd:nfs_getpages+0x8c)
        rsp=0x82973950 rfp=0x829739a8
        r10=0x00000000 r9=0x8298f0cc
        r8=0x82991174 r7=0x82973a3c r6=0x00000002 r5=0x00000008
        r4=0x829739ac
netbsd:nfs_getpages+0xc
        scp=0x80364b2c rlv=0x80457cd0 (netbsd:VOP_GETPAGES+0x60)
        rsp=0x829739ac rfp=0x829739e0
        r10=0x00000000 r9=0x00000000
        r8=0x00000001 r7=0x82973a94 r6=0x82991174 r5=0x00000000
        r4=0x00004000
netbsd:VOP_GETPAGES+0xc
        scp=0x80457c7c rlv=0x803c1434 (netbsd:uvn_get+0xd4)
        rsp=0x829739e4 rfp=0x82973a24
netbsd:uvn_get+0xc
        scp=0x803c136c rlv=0x803a7a04 (netbsd:ubc_fault+0x184)
        rsp=0x82973a28 rfp=0x82973ac0
        r10=0x00000000 r9=0x00000000
        r8=0x82140478 r7=0x00000000 r6=0x00001802 r5=0x82991174
        r4=0x00000000
netbsd:ubc_fault+0xc
        scp=0x803a788c rlv=0x803aa3a4 (netbsd:uvm_fault_internal+0x430)
        rsp=0x82973ac4 rfp=0x82973be4
        r10=0x00000000 r9=0x00000001
        r8=0x00000000 r7=0x00000000 r6=0x00000001 r5=0x8217a000
        r4=0x00000004
netbsd:uvm_fault_internal+0xc
        scp=0x803a9f80 rlv=0x80478b14 (netbsd:data_abort_handler+0x2b0)
        rsp=0x82973be8 rfp=0x82973c58
        r10=0x00000001 r9=0x80542b88
        r8=0x82972000 r7=0x00000000 r6=0x8298d9e0 r5=0x82973c5c
        r4=0x8217a000
netbsd:data_abort_handler+0xc
        scp=0x80478870 rlv=0x80478418 (netbsd:address_exception_entry+0x50)
        rsp=0x82973c5c rfp=0x82973d18
        r10=0x82973ccc r9=0x00000000
        r8=0x20629000 r7=0x81cbdd48 r6=0x00000000 r5=0x00000000
        r4=0x8051f2c0
netbsd:copyout_vmspace+0xc
        scp=0x803f584c rlv=0x803f5c08 (netbsd:uiomove+0x58)
        rsp=0x82973d1c rfp=0x82973d44
        r10=0x81cbdd48 r9=0x00000000
        r8=0x8217a000 r7=0x00001000 r6=0x82973e88 r5=0x00001000
        r4=0x82973ea4
netbsd:uiomove+0xc
        scp=0x803f5bbc rlv=0x803a8a88 (netbsd:ubc_uiomove+0x104)
        rsp=0x82973d48 rfp=0x82973d8c
        r10=0x82973e88 r9=0x00000000
        r8=0x00000101 r7=0x00001000 r6=0x00000000 r5=0x00004000
        r4=0x8217a000
netbsd:ubc_uiomove+0xc
        scp=0x803a8990 rlv=0x80366ca4 (netbsd:nfs_bioread+0x7b0)
        rsp=0x82973d90 rfp=0x82973e1c
        r10=0x82991174 r9=0x00000004
        r8=0x8298f0cc r7=0x00000000 r6=0x00000000 r5=0x00000000
        r4=0x00000000
netbsd:nfs_bioread+0xc
        scp=0x80366500 rlv=0x80378ab0 (netbsd:nfs_read+0x48)
        rsp=0x82973e20 rfp=0x82973e30
        r10=0x82973f60 r9=0x00000004
        r8=0x81cacebc r7=0x82973edc r6=0x82991174 r5=0x82973e88
        r4=0x00001000
netbsd:nfs_read+0x10
        scp=0x80378a78 rlv=0x80457538 (netbsd:VOP_READ+0x38)
        rsp=0x82973e34 rfp=0x82973e58
netbsd:VOP_READ+0xc
        scp=0x8045750c rlv=0x80455884 (netbsd:vn_read+0x84)
        rsp=0x82973e5c rfp=0x82973e7c
netbsd:vn_read+0xc
        scp=0x8045580c rlv=0x80419afc (netbsd:dofileread+0x88)
        rsp=0x82973e80 rfp=0x82973ecc
        r8=0x00000000 r7=0x20629000
        r6=0x00000003 r5=0x00000000 r4=0x00001000
netbsd:dofileread+0xc
        scp=0x80419a80 rlv=0x804516c8 (netbsd:sys_pread+0xc8)
        rsp=0x82973ed0 rfp=0x82973f08
        r8=0x82973f40 r7=0x8298be70
        r6=0x00000003 r5=0x00000000 r4=0x00000000
netbsd:sys_pread+0xc
        scp=0x8045160c rlv=0x80474e0c (netbsd:syscall_plain+0x130)
        rsp=0x82973f0c rfp=0x82973f90
        r10=0x82973f40 r8=0x8298d9e0
        r7=0x82973fb8 r6=0x82973fb4 r5=0x00000006 r4=0x00000010
netbsd:syscall_plain+0x10
        scp=0x80474cec rlv=0x80475338 (netbsd:swi_handler+0x88)
        rsp=0x82973f94 rfp=0x82973fb0
        r10=0x204e80f4 r9=0x00000003
        r8=0x2063f160 r7=0x81cb8a50 r6=0xefa000ad r5=0x8298d9e0
        r4=0x82973fb4
netbsd:swi_handler+0x14
        scp=0x804752c4 rlv=0x80478254 (netbsd:swi_entry+0x2c)
        rsp=0x82973fb4 rfp=0x7fffda54
        r7=0x00001000 r6=0x20629000
        r5=0x00000000 r4=0x8051f2c0

What is last pmap.c patch does?

-- 
With Best Regards,
Andy Shevchenko