Hi!
Commit
a4a6198b80cf82eb8160603c98da218d1bd5e104
"[PATCH] tvec_bases too large for per-cpu data"
broke early_serial_setup() and maybe other code which uses
init_timer() before init_timers_cpu() is called.
This commit introduced run-time initialization dependence which never
existed before, namely, tvec_bases was always valid before this
change, but now it's a pointer which should be initialized prior to
use of any timer function.
If init_timer() is called before such initialization (in my case this
happens when PPC440GX board support code calls early_serial_setup to
register UARTs, serial8250_isa_init_ports() calls init_timer()),
"base" field in the timer_list struct is set to NULL.
When later mod_timer() is called for such timer it hangs in
lock_timer_base().
Rolling back this commit fixes the problem, although, this is
obviously not a proper fix.
I don't a fix I like, so I'll leave it to people more familiar with
this matter :)
--
Eugene
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
