oops with current bk kernel on x86-64

oops with current bk kernel on x86-64

[Ulrich Drepper]

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Some harmless code (while compiling glibc) caused two oopses with the
current bk kernel (as of 2003-05-01T21:00:00-07).  syslogd log the
attached lines but the remote session I was using is pretty dead.  This
is on a Solo machine.

-- 
--------------.                        ,-.            444 Castro Street
Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------

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May  1 23:55:30 hammer kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
May  1 23:55:30 hammer kernel:  printing rip:
May  1 23:55:30 hammer kernel: ffffffff8021efe4
May  1 23:55:30 hammer kernel: PML4 eb8f067 PGD 27ad067 PMD 0 
May  1 23:55:30 hammer kernel: Oops: 0000 [1]
May  1 23:55:30 hammer kernel: CPU 0 
May  1 23:55:30 hammer kernel: Pid: 18070, comm: ld-linux-x86-64 Not tainted
May  1 23:55:30 hammer kernel: RIP: 0010:[<ffffffff8021efe4>] <ffffffff8021efe4>{copy_user_generic+1}
May  1 23:55:30 hammer kernel: RSP: 0018:000001000a475b88  EFLAGS: 00010246
May  1 23:55:30 hammer kernel: RAX: 0000000000000058 RBX: 0000000000000fa8 RCX: 0000000000000000
May  1 23:55:30 hammer kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000100027f4058
May  1 23:55:30 hammer kernel: RBP: 000001001ec83860 R08: 000000ff000000fe R09: 000000f7000000f6
May  1 23:55:30 hammer kernel: R10: 000000f9000000f8 R11: 000000f3000000f2 R12: 0000000000000000
May  1 23:55:30 hammer kernel: R13: 00000100027f4058 R14: 0000000000000000 R15: 0000000000000074
May  1 23:55:30 hammer kernel: FS:  0000002a95791300(0000) GS:ffffffff803e7440(0000) knlGS:0000000000000000
May  1 23:55:30 hammer kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
May  1 23:55:30 hammer kernel: CR2: 0000000000000000 CR3: 0000000000101000 CR4: 00000000000006a0
May  1 23:55:30 hammer kernel: 
May  1 23:55:30 hammer kernel: Call Trace:<ffffffff80194a2a>{ext3_prepare_write+106} <ffffffff8014b843>{__filemap_copy_from_user_iovec+67} 
May  1 23:55:30 hammer kernel:        <ffffffff8014bf2a>{generic_file_aio_write_nolock+1722} 
May  1 23:55:30 hammer kernel:        <ffffffff8019eea6>{journal_dirty_metadata+438} <ffffffff8014c2ae>{generic_file_write_nolock+94} 
May  1 23:55:30 hammer kernel:        <ffffffff8019eea6>{journal_dirty_metadata+438} <ffffffff801967b1>{ext3_do_update_inode+657} 
May  1 23:55:30 hammer kernel:        <ffffffff8019f32f>{journal_stop+511} <ffffffff8019a88d>{__ext3_journal_stop+45} 
May  1 23:55:30 hammer kernel:        <ffffffff8014c49a>{generic_file_writev+58} <ffffffff80164278>{do_readv_writev+392} 
May  1 23:55:30 hammer kernel:        <ffffffff80163d00>{do_sync_write+0} <ffffffff80164986>{get_empty_filp+118} 
May  1 23:55:30 hammer kernel:        <ffffffff801632e3>{dentry_open+227} <ffffffff801631f1>{filp_open+65} 
May  1 23:55:30 hammer kernel:        <ffffffff80164474>{sys_writev+68} <ffffffff801116a4>{system_call+124} 
May  1 23:55:30 hammer kernel:        
May  1 23:55:30 hammer kernel: Process ld-linux-x86-64 (pid: 18070, stackpage=10019826c50)
May  1 23:55:30 hammer kernel: Stack: 0000000000000fa8 ffffffff8014b843 00000000000005a8 000001001ec83850 
May  1 23:55:30 hammer kernel:        00000100010c7c40 00000100046a2300 0000000000000000 ffffffff8014bf2a 
May  1 23:55:30 hammer kernel:        000001000a475bd8 0000007fbffff630 
May  1 23:55:30 hammer kernel: Call Trace:<ffffffff8014b843>{__filemap_copy_from_user_iovec+67} 
May  1 23:55:30 hammer kernel:        <ffffffff8014bf2a>{generic_file_aio_write_nolock+1722} 
May  1 23:55:30 hammer kernel:        <ffffffff8019eea6>{journal_dirty_metadata+438} <ffffffff8014c2ae>{generic_file_write_nolock+94} 
May  1 23:55:30 hammer kernel:        <ffffffff8019eea6>{journal_dirty_metadata+438} <ffffffff801967b1>{ext3_do_update_inode+657} 
May  1 23:55:30 hammer kernel:        <ffffffff8019f32f>{journal_stop+511} <ffffffff8019a88d>{__ext3_journal_stop+45} 
May  1 23:55:30 hammer kernel:        <ffffffff8014c49a>{generic_file_writev+58} <ffffffff80164278>{do_readv_writev+392} 
May  1 23:55:30 hammer kernel:        <ffffffff80163d00>{do_sync_write+0} <ffffffff80164986>{get_empty_filp+118} 
May  1 23:55:30 hammer kernel:        <ffffffff801632e3>{dentry_open+227} <ffffffff801631f1>{filp_open+65} 
May  1 23:55:30 hammer kernel:        <ffffffff80164474>{sys_writev+68} <ffffffff801116a4>{system_call+124} 
May  1 23:55:30 hammer kernel:        
May  1 23:55:30 hammer kernel: 
May  1 23:55:30 hammer kernel: Code: 0f 18 1e 31 c0 89 f9 83 e1 07 0f 85 9b 00 00 00 48 89 d1 bb 

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