Messages in this thread | | | Date | Fri, 2 Mar 2018 00:19:34 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [lkp-robot] [printk] c162d5b433: BUG:KASAN:use-after-scope_in_c |
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On (03/01/18 09:51), Dmitry Vyukov wrote: > > https://marc.info/?l=linux-kernel&m=151200883525299 > > > > [..] > >> I feel lost a bit. > > > > Yeah... can't understand what's going on there. > > > > The last time kasan didn't like this part > > > > [ 0.003333] ? console_unlock+0x605/0xcc0: > > atomic_read at arch/x86/include/asm/atomic.h:27 > > (inlined by) static_key_count at include/linux/jump_label.h:191 > > (inlined by) static_key_false at include/linux/jump_label.h:201 > > (inlined by) trace_console_rcuidle at include/trace/events/printk.h:10 > > (inlined by) call_console_drivers at kernel/printk/printk.c:1556 > > (inlined by) console_unlock at kernel/printk/printk.c:2233 > > > > complaining that there was a write of size 4... at atomic_read(). > > Hi Sergey, > > Where is that report? > I doubt that KASAN has instrumented a read as a write (at least there > are no such known cases), so perhaps it's pointing to some other > memory access.
Hello Dmitry,
I believe it's this one
https://marc.info/?l=linux-kernel&m=151200883525299
-ss
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