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kernel/panic: add verbose logging of kernel taints in backtraces

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With nearly 20 taint flags and respective characters, it's getting a bit
difficult to remember what each taint flag character means.  Add verbose
logging of the set taints in the format:

Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN

in dump_stack_print_info() when there are taints.

Note that the "negative flag" G is not included.

Link: https://lkml.kernel.org/r/7321e306166cb2ca2807ab8639e665baa2462e9c.1717146197.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Jani Nikula
2024-05-31 12:04:57 +03:00
committed by Andrew Morton
parent f36fc96c15
commit 2f183c6834
3 changed files with 42 additions and 14 deletions
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3
lib/dump_stack.c
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@@ -62,6 +62,9 @@ void dump_stack_print_info(const char *log_lvl)
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version, BUILD_ID_VAL);
if (get_taint())
printk("%s%s\n", log_lvl, print_tainted_verbose());
if (dump_stack_arch_desc_str[0] != '\0')
printk("%sHardware name: %s\n",
log_lvl, dump_stack_arch_desc_str);