7412dc6d55
dump_stack() is called in panic(). If for some reason another CPU is holding the printk_cpu_sync and is unable to release it, the panic CPU will be unable to continue and print the stacktrace. Since non-panic CPUs are not allowed to store new printk messages anyway, there is no need to synchronize the stacktrace output in a panic situation. For the panic CPU, do not get the printk_cpu_sync because it is not needed and avoids a potential deadlock scenario in panic(). Link: https://lore.kernel.org/lkml/ZcIGKU8sxti38Kok@alley Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20240207134103.1357162-15-john.ogness@linutronix.de Signed-off-by: Petr Mladek <pmladek@suse.com> |
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| .. | ||
| Makefile | ||
| braille.c | ||
| braille.h | ||
| console_cmdline.h | ||
| index.c | ||
| internal.h | ||
| nbcon.c | ||
| printk.c | ||
| printk_ringbuffer.c | ||
| printk_ringbuffer.h | ||
| printk_safe.c | ||
| sysctl.c | ||