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Subject2.4.21-pre3-ac4 oops in free_pages_ok
Had a qmail server crash this morning with the below oops.  Also had 2 other squid servers running same kernel die with no indication of why in syslog (couldn't see console).  Think I'll stick with 2.4.20 for now...

Phil Oester


Jan 16 08:34:34 mail34 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000004
Jan 16 08:34:34 mail34 kernel: c0131566
Jan 16 08:34:34 mail34 kernel: *pde = 00000000
Jan 16 08:34:34 mail34 kernel: Oops: 0002
Jan 16 08:34:34 mail34 kernel: CPU: 0
Jan 16 08:34:34 mail34 kernel: EIP: 0010:[<c0131566>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Jan 16 08:34:34 mail34 kernel: EFLAGS: 00010246
Jan 16 08:34:34 mail34 kernel: eax: 00000000 ebx: c16eaf50 ecx: c9a00000 edx: c9a0005c
Jan 16 08:34:34 mail34 kernel: esi: 00000000 edi: 00000000 ebp: 00000000 esp: c9a01d84
Jan 16 08:34:34 mail34 kernel: ds: 0018 es: 0018 ss: 0018
Jan 16 08:34:34 mail34 kernel: Process smtp_message (pid: 12110, stackpage=c9a01000)
Jan 16 08:34:34 mail34 kernel: Stack: d63b3840 40014000 00000001 d56f2b00 c0126a82 d63b3840 d56f2b00 c1c0fdb8
Jan 16 08:34:34 mail34 kernel: e4e51000 c1000020 cd552cc0 c012e78a c1c0fdb8 00000025 00000000 c1c22660
Jan 16 08:34:34 mail34 kernel: c012fb39 c1c0fdb8 cd552cc0 00000000 c1c0fdc0 c1c0fdc8 c5523b50 c9a00000
Jan 16 08:34:34 mail34 kernel: Call Trace: [<c0126a82>] [<c012e78a>] [<c012fb39>] [<c0130cc9>] [<c0130d6c>]
Warning (Oops_read): Code line not seen, dumping what data is available

>>EIP; c0131566 <__free_pages_ok+286/2a0> <=====
Trace; c0126a82 <handle_mm_fault+62/d0>
Trace; c012e78a <kmem_slab_destroy+aa/d0>
Trace; c012fb39 <kmem_cache_reap+2b9/330>
Trace; c0130cc9 <shrink_caches+19/80>
Trace; c0130d6c <try_to_free_pages_zone+3c/60>

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