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authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-23 12:01:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-23 12:01:01 -0700
commit52826d3b2d1d8e1180a84bef7d72596d6a024a38 (patch)
tree4eaff71d807daa09812652d29e6e9f90e46300b4 /kernel/utsname_sysctl.c
parenta70385240892bcbc6442b054e847c74100e72f1a (diff)
kernel/utsname_sysctl.c: Fix hostname polling
Commit bfca3dd3d068 ("kernel/utsname_sysctl.c: print kernel arch") added a new entry to the uts_kern_table[] array, but didn't update the UTS_PROC_xyz enumerators of older entries, breaking anything that used them. Which is admittedly not many cases: it's really just the two uses of uts_proc_notify() in kernel/sys.c. But apparently journald-systemd actually uses this to detect hostname changes. Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com> Fixes: bfca3dd3d068 ("kernel/utsname_sysctl.c: print kernel arch") Link: https://lore.kernel.org/lkml/0c2b92a6-0f25-9538-178f-eee3b06da23f@secunet.com/ Link: https://linux-regtracking.leemhuis.info/regzbot/regression/0c2b92a6-0f25-9538-178f-eee3b06da23f@secunet.com/ Cc: Petr Vorel <pvorel@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/utsname_sysctl.c')
-rw-r--r--kernel/utsname_sysctl.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index 064072c16e3d..f50398cb790d 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -74,6 +74,7 @@ static int proc_do_uts_string(struct ctl_table *table, int write,
static DEFINE_CTL_TABLE_POLL(hostname_poll);
static DEFINE_CTL_TABLE_POLL(domainname_poll);
+// Note: update 'enum uts_proc' to match any changes to this table
static struct ctl_table uts_kern_table[] = {
{
.procname = "arch",