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| author | Timur Tabi <[email protected]> | 2021-02-14 16:13:48 +0000 |
|---|---|---|
| committer | Petr Mladek <[email protected]> | 2021-02-15 10:08:32 +0000 |
| commit | 5ead723a20e0447bc7db33dc3070b420e5f80aa6 (patch) | |
| tree | 48c75744ea69ab8a453743e41ab00d3c8a642839 /drivers/gpu/drm/lima/lima_devfreq.c | |
| parent | kselftest: add support for skipped tests (diff) | |
| download | kernel-5ead723a20e0447bc7db33dc3070b420e5f80aa6.tar.gz kernel-5ead723a20e0447bc7db33dc3070b420e5f80aa6.zip | |
lib/vsprintf: no_hash_pointers prints all addresses as unhashed
If the no_hash_pointers command line parameter is set, then
printk("%p") will print pointers as unhashed, which is useful for
debugging purposes. This change applies to any function that uses
vsprintf, such as print_hex_dump() and seq_buf_printf().
A large warning message is displayed if this option is enabled.
Unhashed pointers expose kernel addresses, which can be a security
risk.
Also update test_printf to skip the hashed pointer tests if the
command-line option is set.
Signed-off-by: Timur Tabi <[email protected]>
Acked-by: Petr Mladek <[email protected]>
Acked-by: Randy Dunlap <[email protected]>
Acked-by: Sergey Senozhatsky <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Acked-by: Marco Elver <[email protected]>
Signed-off-by: Petr Mladek <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/gpu/drm/lima/lima_devfreq.c')
0 files changed, 0 insertions, 0 deletions