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From Abhi Auradkar <>
Subject [users@httpd] Apache 2.2.21 Seg Fault
Date Wed, 26 Jun 2013 07:01:39 GMT

   We have been seeing some segfaults in apache httpd. 
Following is the dbx output that I see. 

Use `help core mismatch' for more info.
(l@1) terminated by signal SEGV (Segmentation Fault)
0xffffffffffffffff:     <bad address 0xffffffffffffffff>
(dbx) lwps
o>l@1 signal SIGSEGV in 0xffffffff7dddcb98()
  l@54 LWP suspended in 0xffffffff7e301570()
(dbx) lwp l@1
(l@1) stopped in (unknown) at 0xffffffff7dddcb98
0xffffffff7dddcb98:     bcc,a,pt  %icc,0xffffffff7dddcba8       ! 0xffffffff7dddcba8
(dbx) where
  [1] 0xffffffff7dddcb98(0x4, 0xffffffff7ffff33c, 0x0, 0x0, 0x0, 0x0), at 0xffffffff7dddcb98
  [2] 0xffffffff7ddca1b0(0x36, 0xffffffff7ffff33c, 0x0, 0x0, 0x0, 0x0), at 0xffffffff7ddca1b0
  [3] 0xffffffff7ddd50f8(0x36, 0x0, 0xffffffff7ffff3f8, 0x1, 0x0, 0xffffffff7ffff33c), at
  [4] 0xffffffff7ea2ce78(0xffffffff7ffff4cc, 0x100265aa8, 0x40, 0xffffffff7ffff4c0, 0x100265ad0,
0x100265ad0), at 0xffffffff7ea2ce78
  [5] join_workers(0x100000, 0x10029c2a8, 0xffffffff7ffff4cc, 0x10018f000, 0xffffffff7ffff4c0,
0x33), at 0x1000659d8
  [6] child_main(0x1, 0x1d4c1, 0x100191748, 0x10018ff54, 0x100264918, 0x1), at 0x100065efc
  [7] perform_idle_server_maintenance(0xffffffffffffffe3, 0x100064, 0x0, 0x1000856c8, 0x3,
0x0), at 0x100066ab4
  [8] server_main_loop(0x0, 0x40, 0xffffffff78f00068, 0x10018f000, 0x10019170c, 0xffffffff7ffff80c),
at 0x100067240
  [9] ap_mpm_run(0x10018f000, 0x41, 0x0, 0x2000000041, 0x0, 0x40), at 0x1000675bc
  [10] main(0x2400, 0x1001a9c18, 0x1001a5240, 0x100078980, 0x0, 0xffffffff7ffffca0), at 0x100020978

Any pointers what going wrong here? 

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