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authorLinus Torvalds <torvalds@linux-foundation.org>2021-07-02 12:08:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-02 12:08:10 -0700
commit71bd9341011f626d692aabe024f099820f02c497 (patch)
treea1c27fd8f17daff36e380800c5b69769d0d9cc99 /init/main.c
parent3dbdb38e286903ec220aaf1fb29a8d94297da246 (diff)
parentb869d5be0acf0e125e69adcffdca04000dc5b17c (diff)
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "190 patches. Subsystems affected by this patch series: mm (hugetlb, userfaultfd, vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock, migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap, zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc, core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs, signals, exec, kcov, selftests, compress/decompress, and ipc" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits) ipc/util.c: use binary search for max_idx ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock ipc: use kmalloc for msg_queue and shmid_kernel ipc sem: use kvmalloc for sem_undo allocation lib/decompressors: remove set but not used variabled 'level' selftests/vm/pkeys: exercise x86 XSAVE init state selftests/vm/pkeys: refill shadow register after implicit kernel write selftests/vm/pkeys: handle negative sys_pkey_alloc() return code selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random kcov: add __no_sanitize_coverage to fix noinstr for all architectures exec: remove checks in __register_bimfmt() x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned hfsplus: report create_date to kstat.btime hfsplus: remove unnecessary oom message nilfs2: remove redundant continue statement in a while-loop kprobes: remove duplicated strong free_insn_page in x86 and s390 init: print out unknown kernel parameters checkpatch: do not complain about positive return values starting with EPOLL checkpatch: improve the indented label test checkpatch: scripts/spdxcheck.py now requires python3 ...
Diffstat (limited to 'init/main.c')
-rw-r--r--init/main.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c
index 359358500e54..f88d896c0123 100644
--- a/init/main.c
+++ b/init/main.c
@@ -873,6 +873,47 @@ void __init __weak arch_call_rest_init(void)
rest_init();
}
+static void __init print_unknown_bootoptions(void)
+{
+ char *unknown_options;
+ char *end;
+ const char *const *p;
+ size_t len;
+
+ if (panic_later || (!argv_init[1] && !envp_init[2]))
+ return;
+
+ /*
+ * Determine how many options we have to print out, plus a space
+ * before each
+ */
+ len = 1; /* null terminator */
+ for (p = &argv_init[1]; *p; p++) {
+ len++;
+ len += strlen(*p);
+ }
+ for (p = &envp_init[2]; *p; p++) {
+ len++;
+ len += strlen(*p);
+ }
+
+ unknown_options = memblock_alloc(len, SMP_CACHE_BYTES);
+ if (!unknown_options) {
+ pr_err("%s: Failed to allocate %zu bytes\n",
+ __func__, len);
+ return;
+ }
+ end = unknown_options;
+
+ for (p = &argv_init[1]; *p; p++)
+ end += sprintf(end, " %s", *p);
+ for (p = &envp_init[2]; *p; p++)
+ end += sprintf(end, " %s", *p);
+
+ pr_notice("Unknown command line parameters:%s\n", unknown_options);
+ memblock_free(__pa(unknown_options), len);
+}
+
asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
{
char *command_line;
@@ -914,6 +955,7 @@ asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
static_command_line, __start___param,
__stop___param - __start___param,
-1, -1, NULL, &unknown_bootoption);
+ print_unknown_bootoptions();
if (!IS_ERR_OR_NULL(after_dashes))
parse_args("Setting init args", after_dashes, NULL, 0, -1, -1,
NULL, set_init_arg);