kernel/linux.git/lib/vsprintf.c, branch v6.19.11

Merge branch 'for-6.19-vsprintf-timespec64' into for-linus

2025-12-01T13:14:34+00:00

lib/vsprintf: Unify FORMAT_STATE_NUM handlers

2025-11-24T15:10:11+00:00

We have two almost identical pieces that handle FORMAT_STATE_NUM case. The differences are: - redundant {} for one-line if-else conditional - missing blank line after variable definitions - inverted conditional Unify the style of two. Signed-off-by: Andy Shevchenko Reviewed-by: Petr Mladek Link: https://patch.msgid.link/20251120083140.3478507-1-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek

lib/vsprintf: Add specifier for printing struct timespec64

2025-11-19T09:24:13+00:00

A handful drivers want to print a content of the struct timespec64 in a format of %lld:%09ld. In order to make their lives easier, add the respecting specifier directly to the printf() implementation. Signed-off-by: Andy Shevchenko Reviewed-by: Petr Mladek Tested-by: Petr Mladek Link: https://patch.msgid.link/20251113150217.3030010-2-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek

lib/vsprintf: Deduplicate special hex number specifier data

2025-11-19T09:07:52+00:00

Two functions use the same specifier data for the special hex number. Almost the same as the field width is calculated on the size of the given type. Due to that, make a compound literal macro in order to deduplicate the rest. Signed-off-by: Andy Shevchenko Reviewed-by: Petr Mladek Tested-by: Petr Mladek Link: https://patch.msgid.link/20251113150313.3030700-1-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek

lib/vsprintf: Check pointer before dereferencing in time_and_date()

2025-11-12T10:36:20+00:00

The pointer may be invalid when gets to the printf(). In particular the time_and_date() dereferencing it in some cases without checking. Move the check from rtc_str() to time_and_date() to cover all cases. Fixes: 7daac5b2fdf8 ("lib/vsprintf: Print time64_t in human readable format") Signed-off-by: Andy Shevchenko Reviewed-by: Petr Mladek Link: https://patch.msgid.link/20251110132118.4113976-1-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek

lib/vsprintf: Improve vsprintf + sprintf function comments

2025-11-03T17:39:29+00:00

Clarify that the return values of vsprintf() and sprintf() exclude the trailing NUL character. Signed-off-by: Thorsten Blum Reviewed-by: Petr Mladek Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20251103090913.2066-2-thorsten.blum@linux.dev Signed-off-by: Petr Mladek

Merge tag 'printk-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

2025-08-04T17:54:36+00:00

Pull printk updates from Petr Mladek: - Add new "hash_pointers=[auto|always|never]" boot parameter to force the hashing even with "slab_debug" enabled - Allow to stop CPU, after losing nbcon console ownership during panic(), even without proper NMI - Allow to use the printk kthread immediately even for the 1st registered nbcon - Compiler warning removal * tag 'printk-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk: nbcon: Allow reacquire during panic printk: Allow to use the printk kthread immediately even for 1st nbcon slab: Decouple slab_debug and no_hash_pointers vsprintf: Use __diag macros to disable '-Wsuggest-attribute=format' compiler-gcc.h: Introduce __diag_GCC_all

Merge branch 'for-6.17-hash_pointers' into for-linus

2025-08-04T12:16:21+00:00

Merge branch 'for-6.15-printf-attribute' into for-linus

2025-08-04T12:15:14+00:00

slab: Decouple slab_debug and no_hash_pointers

2025-06-09T14:26:10+00:00

Some system owners use slab_debug=FPZ (or similar) as a hardening option, but do not want to be forced into having kernel addresses exposed due to the implicit "no_hash_pointers" boot param setting.[1] Introduce the "hash_pointers" boot param, which defaults to "auto" (the current behavior), but also includes "always" (forcing on hashing even when "slab_debug=..." is defined), and "never". The existing "no_hash_pointers" boot param becomes an alias for "hash_pointers=never". This makes it possible to boot with "slab_debug=FPZ hash_pointers=always". Link: https://github.com/KSPP/linux/issues/368 [1] Fixes: 792702911f58 ("slub: force on no_hash_pointers when slub_debug is enabled") Co-developed-by: Sergio Perez Gonzalez Signed-off-by: Sergio Perez Gonzalez Acked-by: Vlastimil Babka Acked-by: David Rientjes Reviewed-by: Bagas Sanjaya Signed-off-by: Kees Cook Reviewed-by: Harry Yoo Acked-by: Rafael Aquini Tested-by: Petr Mladek Reviewed-by: Petr Mladek Link: https://patch.msgid.link/20250415170232.it.467-kees@kernel.org [kees@kernel.org: Add note about hash_pointers into slab_debug kernel parameter documentation.] Signed-off-by: Petr Mladek