Messages in this thread | | | Date | Mon, 21 Oct 2013 18:12:18 -0500 | From | Eric Sandeen <> | Subject | Re: [PATCH] xfs: fix possible NULL dereference |
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On 10/21/13 5:44 PM, Dave Chinner wrote: > On Mon, Oct 21, 2013 at 03:58:23PM -0500, Eric Sandeen wrote: >> On 10/21/13 1:32 PM, Geyslan G. Bem wrote: >>> This patch puts a 'break' in the true branch, avoiding the 'icptr->ic_next' >>> dereferencing. >> >> Reviewed-by: Eric Sandeen <sandeen@redhat.com> > > Actually, NACK.
I felt that one coming ;)
>> Hm, yeah - cmn_err(CE_PANIC, " " ); used to BUG_ON, but the newer >> xfs_emerg() doesn't. >> >> Dave, was that intentional? > > Of course it was. ;) xfs_emerg() is only called from the debug code > in xlog_verify_iclog(), xlog_verify_tail_lsn and assfail(). > > In the case of assfail(), it has it's own BUG() call, so it does > everything just fine. > > In the case of xlog_verify_iclog() when icptr is NULL, it will > panic immediately after the message is printed, just like the old > code. i.e. this patch isn't fixing anything we need fixed.
A BUG() is probably warranted, then.
-Eric
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