John Ogness b1c4c67a5e printk: ringbuffer: Skip non-finalized records in panic ... Normally a reader will stop once reaching a non-finalized record. However, when a panic happens, writers from other CPUs (or an interrupted context on the panic CPU) may have been writing a record and were unable to finalize it. The panic CPU will reserve/commit/finalize its panic records, but these will be located after the non-finalized records. This results in panic() not flushing the panic messages. Extend _prb_read_valid() to skip over non-finalized records if on the panic CPU. Fixes: 896fbe20b4 ("printk: use the lockless ringbuffer") Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20240207134103.1357162-11-john.ogness@linutronix.de Signed-off-by: Petr Mladek <pmladek@suse.com>		2024-02-07 17:23:18 +01:00
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braille.c
braille.h
console_cmdline.h
index.c	kernel/printk/index.c: fix memory leak with using debugfs_lookup()	2023-02-03 10:42:02 +01:00
internal.h	printk: Add this_cpu_in_panic()	2024-02-07 17:23:18 +01:00
Makefile	printk: Add non-BKL (nbcon) console basic infrastructure	2023-09-18 17:03:45 +02:00
nbcon.c	printk: nbcon: Relocate 32bit seq macros	2024-02-07 17:23:17 +01:00
printk.c	printk: Wait for all reserved records with pr_flush()	2024-02-07 17:23:18 +01:00
printk_ringbuffer.c	printk: ringbuffer: Skip non-finalized records in panic	2024-02-07 17:23:18 +01:00
printk_ringbuffer.h	printk: Wait for all reserved records with pr_flush()	2024-02-07 17:23:18 +01:00
printk_safe.c	printk: Consolidate console deferred printing	2023-07-20 13:06:22 +02:00
sysctl.c	printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin()	2022-02-03 11:27:38 -08:00