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Message-ID: <42389F8D.7060002@chinook.stanford.edu>
Date: Wed, 16 Mar 2005 13:05:17 -0800
From: Max Kamenetsky <maxk@chinook.stanford.edu>
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Subject: Kernel mm/rmap.c oops in 2.6.11.3
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I've been seeing the following bug lately when running some memory- and
CPU-intensive MATLAB jobs.  MATLAB hangs, and commands like ps and top
no longer work.  The only solution I've found is to reboot.  This
happens intermittently, and here's what gets written to /var/log/syslog:


Mar 16 12:35:19 chinook kernel: kernel BUG at mm/rmap.c:482!
Mar 16 12:35:19 chinook kernel: invalid operand: 0000 [#1]
Mar 16 12:35:19 chinook kernel: PREEMPT
Mar 16 12:35:19 chinook kernel: Modules linked in: nvidia
Mar 16 12:35:19 chinook kernel: CPU:    0
Mar 16 12:35:19 chinook kernel: EIP:    0060:[<c014a477>]    Tainted: P
       VLI
Mar 16 12:35:19 chinook kernel: EFLAGS: 00010286   (2.6.11.3)
Mar 16 12:35:19 chinook kernel: EIP is at page_remove_rmap+0x37/0x50
Mar 16 12:35:19 chinook kernel: eax: ffffffff   ebx: 00005000   ecx:
00000006
edx: c16a9920
Mar 16 12:35:19 chinook kernel: esi: e3db1e34   edi: 00008000   ebp:
c16a9920
esp: c8f4be54
Mar 16 12:35:19 chinook kernel: ds: 007b   es: 007b   ss: 0068
Mar 16 12:35:19 chinook kernel: Process MATLAB (pid: 30685,
threadinfo=c8f4a000
task=ec1a9a80)
Mar 16 12:35:19 chinook kernel: Stack: c013e418 00005000 c0142ed6
c16a9920 00000
007 c0565a20 00000001 354c9067
Mar 16 12:35:19 chinook kernel:        00000000 99388000 c0565578
99788000 e0f80
994 99390000 00000000 c0143043
Mar 16 12:35:19 chinook kernel:        c0565578 e0f80990 99388000
00008000 00000
000 99388000 e0f80994 99390000
Mar 16 12:35:19 chinook kernel: Call Trace:
Mar 16 12:35:19 chinook kernel:  [<c013e418>] mark_page_accessed+0x28/0x30
Mar 16 12:35:19 chinook kernel:  [<c0142ed6>] zap_pte_range+0x166/0x280
Mar 16 12:35:19 chinook kernel:  [<c0143043>] zap_pmd_range+0x53/0x70
Mar 16 12:35:19 chinook kernel:  [<c014309a>] zap_pud_range+0x3a/0x60
Mar 16 12:35:19 chinook kernel:  [<c0143130>] unmap_page_range+0x70/0x90
Mar 16 12:35:19 chinook kernel:  [<c0143246>] unmap_vmas+0xf6/0x210
Mar 16 12:35:19 chinook kernel:  [<c0147bbb>] unmap_region+0x7b/0xf0
Mar 16 12:35:19 chinook kernel:  [<c0147ea6>] do_munmap+0x116/0x180
Mar 16 12:35:19 chinook kernel:  [<c0147f54>] sys_munmap+0x44/0x70
Mar 16 12:35:19 chinook kernel:  [<c01027db>] syscall_call+0x7/0xb
Mar 16 12:35:19 chinook kernel: Code: 75 33 83 42 08 ff 0f 98 c0 84 c0
74 1a 8b
42 08 40 78 18 c7 44 24 04 ff ff ff ff c7 04 24 10 00 00 00 e8 9d f5 fe
ff 83 c4
   08 c3 <0f> 0b e2 01 7d a1 42 c0 eb de 0f 0b df 01 7d a1 42 c0 eb c3 90
Mar 16 12:35:19 chinook kernel:  <6>note: MATLAB[30685] exited with
preempt_count 2
Mar 16 12:35:19 chinook kernel: scheduling while atomic:
MATLAB/0x00000002/30685
Mar 16 12:35:19 chinook kernel:  [<c040d3a2>] schedule+0x522/0x530
Mar 16 12:35:19 chinook kernel:  [<c040e19d>]
rwsem_down_read_failed+0x9d/0x190
Mar 16 12:35:19 chinook kernel:  [<c012d414>] .text.lock.futex+0x7/0xf3
Mar 16 12:35:19 chinook kernel:  [<c02a6e80>] vt_console_print+0x60/0x300
Mar 16 12:35:19 chinook kernel:  [<c012d2b4>] do_futex+0x64/0xa0
Mar 16 12:35:19 chinook kernel:  [<c0117527>]
__call_console_drivers+0x57/0x60
Mar 16 12:35:19 chinook kernel:  [<c012d3de>] sys_futex+0xee/0x100
Mar 16 12:35:19 chinook kernel:  [<c0117a58>] release_console_sem+0x98/0xf0
Mar 16 12:35:19 chinook kernel:  [<c0115178>] mm_release+0x98/0xa0
Mar 16 12:35:19 chinook kernel:  [<c0118ed9>] exit_mm+0x19/0x110
Mar 16 12:35:19 chinook kernel:  [<c0103d60>] do_invalid_op+0x0/0xd0
Mar 16 12:35:19 chinook kernel:  [<c0119910>] do_exit+0xa0/0x3d0
Mar 16 12:35:19 chinook kernel:  [<c0103d60>] do_invalid_op+0x0/0xd0
Mar 16 12:35:19 chinook kernel:  [<c010399d>] die+0x18d/0x190
Mar 16 12:35:19 chinook kernel:  [<c0103e0e>] do_invalid_op+0xae/0xd0
Mar 16 12:35:19 chinook kernel:  [<c014a477>] page_remove_rmap+0x37/0x50
Mar 16 12:35:19 chinook kernel:  [<c012872b>]
rcu_process_callbacks+0x3b/0x40
Mar 16 12:35:19 chinook kernel:  [<c011c416>] tasklet_action+0x46/0x70
Mar 16 12:35:19 chinook kernel:  [<c011c1b8>] __do_softirq+0x78/0x90
Mar 16 12:35:19 chinook kernel:  [<c0104ba8>] do_IRQ+0x28/0x40
Mar 16 12:35:19 chinook kernel:  [<c0177691>] __mark_inode_dirty+0xd1/0x1c0
Mar 16 12:35:19 chinook kernel:  [<c01031ef>] error_code+0x2b/0x30
Mar 16 12:35:19 chinook kernel:  [<c014a477>] page_remove_rmap+0x37/0x50
Mar 16 12:35:19 chinook kernel:  [<c013e418>] mark_page_accessed+0x28/0x30
Mar 16 12:35:19 chinook kernel:  [<c0142ed6>] zap_pte_range+0x166/0x280
Mar 16 12:35:19 chinook kernel:  [<c0143043>] zap_pmd_range+0x53/0x70
Mar 16 12:35:19 chinook kernel:  [<c014309a>] zap_pud_range+0x3a/0x60
Mar 16 12:35:19 chinook kernel:  [<c0143130>] unmap_page_range+0x70/0x90
Mar 16 12:35:19 chinook kernel:  [<c0143246>] unmap_vmas+0xf6/0x210
Mar 16 12:35:19 chinook kernel:  [<c0147bbb>] unmap_region+0x7b/0xf0
Mar 16 12:35:19 chinook kernel:  [<c0147ea6>] do_munmap+0x116/0x180
Mar 16 12:35:19 chinook kernel:  [<c0147f54>] sys_munmap+0x44/0x70
Mar 16 12:35:19 chinook kernel:  [<c01027db>] syscall_call+0x7/0xb


I haven't tried 2.6.11.4 yet, but based on what I see in the changelog,
nothing related to the above seems to have been changed.

Thanks,
      Max

P.S.  Please cc me on replies as I don't usually read the mailing list.


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