c4397d94c3 introduces
link_detach_from_manager() and netdev_detach_from_manager(), and they
set Link::manager or NetDev::manager NULL.
But, at the time e.g. link is removed, hence link_drop() is called,
there may be still some asynchronous netlink call is waiting, and
their callbacks hit assertion.
This make {link,netdev}_detach_from_manager() just drop all references
from manager, but keep the pointer to manager.
Fixes#11411.
Before:
IMPORT builtin 'hwdb' fails: No such file or directory
After:
IMPORT builtin 'hwdb' fails: No data available
Previous log is confusing and may be understood as hwdb file not exist.
Found by inspecting results of running this small program:
int main(int argc, const char **argv) {
for (int i = 1; i < argc; i++) {
FILE *f;
char line[1024], prev[1024], *r;
int lineno;
prev[0] = '\0';
lineno = 1;
f = fopen(argv[i], "r");
if (!f)
exit(1);
do {
r = fgets(line, sizeof(line), f);
if (!r)
break;
if (strcmp(line, prev) == 0)
printf("%s:%d: error: dup %s", argv[i], lineno, line);
lineno++;
strcpy(prev, line);
} while (!feof(f));
fclose(f);
}
}
By b1c097af8d (#10239), the receive buffer
size for uevents was set by SO_RCVBUF at first, and fallback to
use SO_RCVBUFFORCE. So, as SO_RCVBUF limits to the buffer size
net.core.rmem_max, which is usually much smaller than 128MB udevd requests,
uevents buffer size was not sufficient.
This fixes the ordering of the request: SO_RCVBUFFORCE first, and
fallback to SO_RCVBUF. Then, udevd's uevent buffer size can be set to
128MB.
This also revert 903893237a.
Fixes#11314 and #10754.
This reverts commit b26c904113.
I don't see anythign wrong, but Ubuntu autopkgtest CI started failing fairly
consistently since this was merged. Let's see if reverting fixes things.
The message is changed from
Cannot create session: Already running in a session...
to
Not creating session: Already running in a session...
This is more neutral and avoids suggesting a problem.
"Will not create session: ..." was suggested, but it sounds like the action
would have yet to be performed. I think Using present continuous is better.
Fixes#10822 (for good now, I hope).
