Hello, I have same issue with my Nexus 7(flo) with kernel `android-msm-flo-3.4-kitkat-mr2`.
After I found this thread, I disabled STRICT_MEMORY_RWX as you said. But, after the change, the kernel doesn't boot and could not attach adb. Do you have any idea? Thanks SeongJae Park. On Monday, September 2, 2013 2:46:24 PM UTC+9, Dhyan wrote: > > Worked After Disabling msm security feature > > # CONFIG_STRICT_MEMORY_RWX is not set > > Thanks > Dhyan > > > > On Tuesday, August 20, 2013 4:46:49 PM UTC+5:30, Dhyan wrote: >> >> Hi Emeric, >> >> I checked the kernel files and found >> probe_kernel_write () throwing EPERM error >> >> kernel/trace/ftrace.c >> | >> |__ ftrace_init(void) >> | >> |_ftrace_process_locs >> | >> |_ ftrace_update_code >> | >> |_ftrace_code_disable >> | >> |_ ftrace_make_nop() -arch/arm/kernel/ftrace.c >> | >> |_ftrace_modify_code >> | >> |__probe_kernel_write () >> >> Which Is throwing "-EPERM" >> >> Any idea ? >> Thanks >> Dhyan >> >> On Tuesday, August 20, 2013 5:02:26 AM UTC+5:30, m-ric wrote: >>> >>> Did you have a look into *ftrace_bug()* function to find out what can >>> trigger this bug? >>> >>> Emeric >>> >>> >>> On Mon, Aug 19, 2013 at 9:14 AM, Dhyan <linux...@gmail.com> wrote: >>> >>>> Dear All, >>>> >>>> I am trying to run ftrace in nexus-4.But when i enable ftrace i am >>>> getting following in dmesg >>>> >>>> <6>[ 0.002166] ftrace: allocating 30960 entries in 91 pages >>>> <4>[ 0.036563] ------------[ cut here ]------------ >>>> <4>[ 0.036593] WARNING: at kernel/trace/ftrace.c:1590 >>>> ftrace_bug+0xf0/0x178() >>>> <4>[ 0.036654] [<c0015090>] (unwind_backtrace+0x0/0xec) from >>>> [<c08529ac>] (dump_stack+0x20/0x24) >>>> <4>[ 0.036685] [<c08529ac>] (dump_stack+0x20/0x24) from [<c0070db0>] >>>> (warn_slowpath_common+0x58/0x70) >>>> <4>[ 0.036716] [<c0070db0>] (warn_slowpath_common+0x58/0x70) from >>>> [<c0070ec0>] (warn_slowpath_null+0x2c/0x34) >>>> <4>[ 0.036746] [<c0070ec0>] (warn_slowpath_null+0x2c/0x34) from >>>> [<c00d34b4>] (ftrace_bug+0xf0/0x178) >>>> <4>[ 0.036777] [<c00d34b4>] (ftrace_bug+0xf0/0x178) from >>>> [<c0d145d8>] (ftrace_init+0x364/0x50c) >>>> <4>[ 0.036838] [<c0d145d8>] (ftrace_init+0x364/0x50c) from >>>> [<c0d00944>] (start_kernel+0x42c/0x498) >>>> <4>[ 0.036868] [<c0d00944>] (start_kernel+0x42c/0x498) from >>>> [<8020803c>] (0x8020803c) >>>> <4>[ 0.036899] ---[ end trace da227214a82491b7 ]--- >>>> >>>> Can some one please help to fix this ? >>>> >>>> Thanks >>>> Dhyan >>>> >>>> >>>> -- >>>> -- >>>> unsubscribe: android-kerne...@googlegroups.com >>>> website: http://groups.google.com/group/android-kernel >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Android Linux Kernel Development" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to android-kerne...@googlegroups.com. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >>> -- -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel --- You received this message because you are subscribed to the Google Groups "Android Linux Kernel Development" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-kernel+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
