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SubjectRe: linux-next: Tree for Dec 6 (objtool, lots in btrfs)
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[oops, forgot to add Josh and PeterZ]

On 12/11/19 5:49 AM, David Sterba wrote:
> On Fri, Dec 06, 2019 at 08:17:30AM -0800, Randy Dunlap wrote:
>> On 12/5/19 6:54 PM, Stephen Rothwell wrote:
>>> Hi all,
>>>
>>> Please do not add any material for v5.6 to your linux-next included
>>> trees until after v5.5-rc1 has been released.
>>>
>>> Changes since 20191204:
>>>
>>
>> on x86_64:
>>
>> fs/btrfs/ctree.o: warning: objtool: btrfs_search_slot()+0x2d4: unreachable instruction
>
> Can somebody enlighten me what is one supposed to do to address the
> warnings? Function names reported in the list contain our ASSERT macro
> that conditionally calls BUG() that I believe is what could cause the
> unreachable instructions but I don't see how.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/fs/btrfs/ctree.h#n3113
>
> __cold
> static inline void assfail(const char *expr, const char *file, int line)
> {
> if (IS_ENABLED(CONFIG_BTRFS_ASSERT)) {
> pr_err("assertion failed: %s, in %s:%d\n", expr, file, line);
> BUG();
> }
> }
>
> #define ASSERT(expr) \
> (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
>


--
~Randy
Reported-by: Randy Dunlap <rdunlap@infradead.org>

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