lkml.org 
[lkml]   [2022]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2] vsprintf: Fix %pK with kptr_restrict == 0
On Thu 2022-02-17 09:49:59, Christophe Leroy wrote:
> Although kptr_restrict is set to 0 and the kernel is booted with
> no_hash_pointers parameter, the content of /proc/vmallocinfo is
> lacking the real addresses.
>
> / # cat /proc/vmallocinfo
> 0x(ptrval)-0x(ptrval) 8192 load_module+0xc0c/0x2c0c pages=1 vmalloc
> 0x(ptrval)-0x(ptrval) 12288 start_kernel+0x4e0/0x690 pages=2 vmalloc
> 0x(ptrval)-0x(ptrval) 12288 start_kernel+0x4e0/0x690 pages=2 vmalloc
> 0x(ptrval)-0x(ptrval) 8192 _mpic_map_mmio.constprop.0+0x20/0x44 phys=0x80041000 ioremap
> 0x(ptrval)-0x(ptrval) 12288 _mpic_map_mmio.constprop.0+0x20/0x44 phys=0x80041000 ioremap
> ...
>
> According to the documentation for /proc/sys/kernel/, %pK is
> equivalent to %p when kptr_restrict is set to 0.
>
> Fixes: 5ead723a20e0 ("lib/vsprintf: no_hash_pointers prints all addresses as unhashed")
> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

The patch has been committed into printk/linux.git, branch for-5.18.

Best Regards,
Petr

\
 
 \ /
  Last update: 2022-02-24 10:45    [W:0.388 / U:1.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site