On Tue, Mar 05, 2019 at 03:01:35PM +0500, Embedded Engineer wrote: > On Mon, Mar 4, 2019 at 7:25 PM Thierry Reding <thierry.reding@xxxxxxxxx> wrote: > > Perhaps also try to run a recent linux-next just to exclude any issues > > that may have been part of the 4.8.0-rc7 that you tested. > > Thierry I have disabled cache as per Andrew's suggestion by calling > dcache_disable() and icache_disable() just before kernel_entry() in > u-boot source. I have also build the linux-next kernel and tested by > booting from microSD card but it is not going upto login console and > hangs midway. Please have a look at kernel logs in below link: > > https://pastebin.com/ByuaLxTt Please apply this patch so we can see the (ptrval) values. Thanks. 8<=== From: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Subject: [PATCH] lib: make vsprintf print pointers without munging Printing pointers is useful for debugging, disable this so I can debug the kernel. Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> --- lib/vsprintf.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 37a54a6dd594..c2ae4075c786 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -687,9 +687,9 @@ early_initcall(initialize_ptr_random); static char *ptr_to_id(char *buf, char *end, const void *ptr, struct printf_spec spec) { - const char *str = sizeof(ptr) == 8 ? "(____ptrval____)" : "(ptrval)"; unsigned long hashval; +#if 0 /* When debugging early boot use non-cryptographically secure hash. */ if (unlikely(debug_boot_weak_hash)) { hashval = hash_long((unsigned long)ptr, 32); @@ -697,6 +697,7 @@ static char *ptr_to_id(char *buf, char *end, const void *ptr, } if (static_branch_unlikely(¬_filled_random_ptr_key)) { + const char *str = sizeof(ptr) == 8 ? "(____ptrval____)" : "(ptrval)"; spec.field_width = 2 * sizeof(ptr); /* string length must be less than default_width */ return string(buf, end, str, spec); @@ -712,6 +713,9 @@ static char *ptr_to_id(char *buf, char *end, const void *ptr, #else hashval = (unsigned long)siphash_1u32((u32)ptr, &ptr_key); #endif +#else + hashval = (unsigned long)ptr; +#endif return pointer_string(buf, end, (const void *)hashval, spec); } -- 2.7.4 -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up
