Re: Swap Corruption in 2.4.3 ?

[Ishikawa]

On 10 Apr 2001, Richard Russon wrote: > VM: Undead swap entry 000bb300 > VM: Undead swap entry 00abb300 > VM: Undead swap entry 016fb300 I have seen similar mysterious crashes of X server when I began accessing large web page using Netscape navigator. It was reproducible the first few times I noticed. Today, a similar problem occurred and luckily I noticed console messages printed on a virtual console. There ware many lines like the following. swap_free: Trying to freee non-existent swap page Bad Swap Entry: 00000008 Bad Swap Entry: 0000008 ... VM: Kiling process jserver Swap_free: Trying to free non-existent swap page ... It seems that there was some sort of kernel data corruption. (In my case, the kernel could not find the swap page and failed to swap out memory and thus the VM's selective process killer was invoked to free up memory?) Then eventually I got Unable to handle kernel NULL pointer defreence at ... message and the system crashed. (I was also typing Alt+SysReq+keystroke to see if I could sync disk.) . Anyway, this probem seems to be in 2.4.2, too from what I recall about the first mysterious X server crash. On Apri 20 Rik van Riel wrote: >Known bug ... unknown cause ;( > >http://www.linux-mm.org/bugzilla.shtml has it already listed The symptom there didn't match mine, but I do suspect a (new) problem in VM of 2.4.3 (2.4.2, too. 2.4.1, I am not sure.). Happy Hacking - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/