On Tue, Nov 29, 2016 at 10:55:27AM -0800, Laura Abbott wrote: > @@ -94,7 +94,7 @@ static void __init zero_pud_populate(pgd_t *pgd, unsigned long addr, > > pud_populate(&init_mm, pud, kasan_zero_pmd); We also need to lm_alias()-ify kasan_zero_pmd here, or we'll get a stream of warnings at boot (example below). I should have spotted that. :/ With that fixed up, I'm able to boot Juno with both KASAN_INLINE and DEBUG_VIRTUAL, without issued. With that, my previous Reviewed-by and Tested-by stand. Thanks, Mark. ---->8---- [ 0.000000] virt_to_phys used for non-linear address :ffff20000a367000 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at arch/arm64/mm/physaddr.c:13 __virt_to_phys+0x48/0x68 [ 0.000000] Modules linked in: [ 0.000000] [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.9.0-rc6-00012-gdcc0162-dirty #13 [ 0.000000] Hardware name: ARM Juno development board (r1) (DT) [ 0.000000] task: ffff200009ec2200 task.stack: ffff200009eb0000 [ 0.000000] PC is at __virt_to_phys+0x48/0x68 [ 0.000000] LR is at __virt_to_phys+0x48/0x68 [ 0.000000] pc : [<ffff2000080af310>] lr : [<ffff2000080af310>] pstate: 600000c5 [ 0.000000] sp : ffff200009eb3c80 [ 0.000000] x29: ffff200009eb3c80 x28: ffff20000abdd000 [ 0.000000] x27: ffff200009ce1000 x26: ffff047fffffffff [ 0.000000] x25: ffff200009ce1000 x24: ffff20000a366100 [ 0.000000] x23: ffff048000000000 x22: ffff20000a366000 [ 0.000000] x21: ffff040080000000 x20: ffff040040000000 [ 0.000000] x19: ffff20000a367000 x18: 000000000000005c [ 0.000000] x17: 00000009ffec20e0 x16: 00000000fefff4b0 [ 0.000000] x15: ffffffffffffffff x14: 302b646d705f6f72 [ 0.000000] x13: 657a5f6e6173616b x12: 2820303030373633 [ 0.000000] x11: ffff20000a376ca0 x10: 0000000000000010 [ 0.000000] x9 : 646461207261656e x8 : 696c2d6e6f6e2072 [ 0.000000] x7 : 6f66206465737520 x6 : ffff20000a3741e5 [ 0.000000] x5 : 1fffe4000146ee0e x4 : 1fffe400013de704 [ 0.000000] x3 : 1fffe400013d6003 x2 : 1fffe400013d6003 [ 0.000000] x1 : 0000000000000000 x0 : 0000000000000056 [ 0.000000] [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] Call trace: [ 0.000000] Exception stack(0xffff200009eb3a50 to 0xffff200009eb3b80) [ 0.000000] 3a40: ffff20000a367000 0001000000000000 [ 0.000000] 3a60: ffff200009eb3c80 ffff2000080af310 00000000600000c5 000000000000003d [ 0.000000] 3a80: ffff200009ce1000 ffff2000081c4720 0000000041b58ab3 ffff200009c6cd98 [ 0.000000] 3aa0: ffff2000080818a0 ffff20000a366000 ffff048000000000 ffff20000a366100 [ 0.000000] 3ac0: ffff200009ce1000 ffff047fffffffff ffff200009ce1000 ffff20000abdd000 [ 0.000000] 3ae0: ffff0400013e3ccf ffff20000a3766c0 0000000000000000 0000000000000000 [ 0.000000] 3b00: ffff200009eb3c80 ffff200009eb3c80 ffff200009eb3c40 00000000ffffffc8 [ 0.000000] 3b20: ffff200009eb3b50 ffff2000082cbd3c ffff200009eb3c80 ffff200009eb3c80 [ 0.000000] 3b40: ffff200009eb3c40 00000000ffffffc8 0000000000000056 0000000000000000 [ 0.000000] 3b60: 1fffe400013d6003 1fffe400013d6003 1fffe400013de704 1fffe4000146ee0e [ 0.000000] [<ffff2000080af310>] __virt_to_phys+0x48/0x68 [ 0.000000] [<ffff200009d734e8>] zero_pud_populate+0x88/0x138 [ 0.000000] [<ffff200009d736f8>] kasan_populate_zero_shadow+0x160/0x18c [ 0.000000] [<ffff200009d5a048>] kasan_init+0x1f8/0x408 [ 0.000000] [<ffff200009d54000>] setup_arch+0x314/0x948 [ 0.000000] [<ffff200009d50c64>] start_kernel+0xb4/0x54c [ 0.000000] [<ffff200009d501e0>] __primary_switched+0x64/0x74 [mark@leverpostej:~/src/linux]% uselinaro 15.08 aarch64-linux-gnu-readelf -s vmlinux | grep ffff20000a367000 108184: ffff20000a367000 4096 OBJECT GLOBAL DEFAULT 25 kasan_zero_pmd [mark@leverpostej:~/src/linux]% uselinaro 15.08 aarch64-linux-gnu-addr2line -ife vmlinux ffff200009d734e8 set_pud /home/mark/src/linux/./arch/arm64/include/asm/pgtable.h:435 __pud_populate /home/mark/src/linux/./arch/arm64/include/asm/pgalloc.h:47 pud_populate /home/mark/src/linux/./arch/arm64/include/asm/pgalloc.h:52 zero_pud_populate /home/mark/src/linux/mm/kasan/kasan_init.c:95 -- 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>