Re: BUG: NULL pointer dereference in shmem_evict_inode()

From: John Stultz
Date: Mon Aug 20 2012 - 21:15:07 EST


On 08/20/2012 06:10 PM, John Stultz wrote:
On 08/20/2012 06:04 PM, Fengguang Wu wrote:
Hi John,

The below oops happens in v3.5..v3.6-rc2 and it's bisected down to commit
2a8c0883c ("time: Move xtime_nsec adjustment underflow handling timekeeping_adjust").

However linux-next is working fine. Do you have any fixes not yet sent to Linus?
Yea, there's a fix pending in tip/timers/urgent (4e8b14526ca7fb046a81c94002c1c43b6fdf0e9b) to catch crazy values from settimeofday or the cmos clock that might overflow a ktime_t.

Out of curiosity, how are you triggering/reproducing this?


Looking at the commit you pointed out, it seems more likely Ingo's fix (1d17d17484d40f2d5b35c79518597a2b25296996) might be related, but that should have landed in v3.6-rc2. So I'm not sure.

thanks
-john


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