Messages in this thread | | | Date | Wed, 16 Nov 2016 11:27:49 +1100 | From | Stephen Rothwell <> | Subject | linux-next: build warning after merge of the pstore tree |
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Hi Kees,
After merging the pstore tree, today's linux-next build (x86_64 allmodconfig) produced this warning:
In file included from include/linux/rcupdate.h:38:0, from include/linux/idr.h:18, from include/linux/kernfs.h:14, from include/linux/sysfs.h:15, from include/linux/kobject.h:21, from include/linux/device.h:17, from fs/pstore/ram_core.c:17: fs/pstore/ram_core.c: In function 'buffer_size_add': include/linux/spinlock.h:246:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized] _raw_spin_unlock_irqrestore(lock, flags); \ ^ fs/pstore/ram_core.c:78:16: note: 'flags' was declared here unsigned long flags; ^ In file included from include/linux/rcupdate.h:38:0, from include/linux/idr.h:18, from include/linux/kernfs.h:14, from include/linux/sysfs.h:15, from include/linux/kobject.h:21, from include/linux/device.h:17, from fs/pstore/ram_core.c:17: fs/pstore/ram_core.c: In function 'buffer_start_add': include/linux/spinlock.h:246:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized] _raw_spin_unlock_irqrestore(lock, flags); \ ^ fs/pstore/ram_core.c:56:16: note: 'flags' was declared here unsigned long flags; ^
Introduced by commit
95937ddce59a ("pstore: Allow prz to control need for locking")
They appear to be a very noisy false positives. :-(
-- Cheers, Stephen Rothwell
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