On 05/06/2014 01:05 PM, Catalin Marinas wrote: > On Tue, May 06, 2014 at 04:20:27PM +0100, Sasha Levin wrote: >> On 05/02/2014 09:41 AM, Catalin Marinas wrote: >>> Currently, kmemleak_early_log is disabled at the beginning of the >>> kmemleak_init() function, before the full kmemleak tracing is actually >>> enabled. In this small window, kmem_cache_create() is called by kmemleak >>> which triggers additional memory allocation that are not traced. This >>> patch moves the kmemleak_early_log disabling further down and at the >>> same time with full kmemleak enabling. >>> >>> Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> >>> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> >> >> This patch makes the kernel die during the boot process: >> >> [ 24.471801] BUG: unable to handle kernel paging request at ffffffff922f2b93 >> [ 24.472496] IP: [<ffffffff922f2b93>] log_early+0x0/0xcd > > Thanks for reporting this. I assume you run with > CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF enabled and kmemleak_early_log remains > set even though kmemleak is not in use. > > Does the patch below fix it? Nope, that didn't help as I don't have DEBUG_KMEMLEAK_DEFAULT_OFF enabled. For reference: $ cat .config | grep KMEMLEAK CONFIG_HAVE_DEBUG_KMEMLEAK=y CONFIG_DEBUG_KMEMLEAK=y CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE=400 # CONFIG_DEBUG_KMEMLEAK_TEST is not set # CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is not set Thanks, Sasha -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>