On 2017-07-18 10:50, Piotr Gregor wrote: > Hi Thomas, > > Dmesg reports insecure W+X mapping found at address > ffff88000005f000/0xffff88000005f000 > > on 4.4.70 kernel patched with -rt83 patch: I got something similar on 4.4.75-rt88 (I don't think I have seen that on other of my kernels): Jul 30 19:01:27 localhost kernel: ------------[ cut here ]------------ Jul 30 19:01:27 localhost kernel: WARNING: CPU: 2 PID: 1 at arch/x86/mm/dump_pagetables.c:225 note_page+0x635/0x7e0() Jul 30 19:01:27 localhost kernel: x86/mm: Found insecure W+X mapping at address ffff880000088000/0xffff880000088000 Jul 30 19:01:27 localhost kernel: Modules linked in: Jul 30 19:01:27 localhost kernel: CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.4.75-rt88-1 #1 Jul 30 19:01:27 localhost kernel: Hardware name: Acer Aspire E5-575/Ironman_SK , BIOS V1.25 03/03/2017 Jul 30 19:01:27 localhost kernel: 0000000000000286 c0f497dec3146f27 ffff880246a47d40 ffffffff8133c614 Jul 30 19:01:27 localhost kernel: ffff880246a47d88 0000000000000009 ffff880246a47d78 ffffffff810809e2 Jul 30 19:01:27 localhost kernel: ffff880246a47e90 8000000000000163 0000000000000004 0000000000000000 Jul 30 19:01:27 localhost kernel: Call Trace: Jul 30 19:01:27 localhost kernel: [<ffffffff8133c614>] dump_stack+0x65/0x91 Jul 30 19:01:27 localhost kernel: [<ffffffff810809e2>] warn_slowpath_common+0x82/0xd0 Jul 30 19:01:27 localhost kernel: [<ffffffff81080a8c>] warn_slowpath_fmt+0x5c/0x80 Jul 30 19:01:27 localhost kernel: [<ffffffff81074f35>] note_page+0x635/0x7e0 Jul 30 19:01:27 localhost kernel: [<ffffffff810753f8>] ptdump_walk_pgd_level_core+0x318/0x450 Jul 30 19:01:27 localhost kernel: [<ffffffff81075567>] ptdump_walk_pgd_level_checkwx+0x17/0x20 Jul 30 19:01:27 localhost kernel: [<ffffffff8106ad7c>] mark_rodata_ro+0xec/0x100 Jul 30 19:01:27 localhost kernel: [<ffffffff8164f940>] ? rest_init+0x90/0x90 Jul 30 19:01:27 localhost kernel: [<ffffffff8164f95d>] kernel_init+0x1d/0xe0 Jul 30 19:01:27 localhost kernel: [<ffffffff8165bc8f>] ret_from_fork+0x3f/0x70 Jul 30 19:01:27 localhost kernel: [<ffffffff8164f940>] ? rest_init+0x90/0x90 Jul 30 19:01:27 localhost kernel: ---[ end trace 0000000000000002 ]--- Jul 30 19:01:27 localhost kernel: x86/mm: Checked W+X mappings: FAILED, 179927 W+X pages found. Jacek -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
