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| author | Nicholas Krause <xerofoify@gmail.com> | 2016-05-19 18:45:58 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-07-27 08:42:08 -0700 |
| commit | 34c1416699777268bc753614bf61160a43f4e47c (patch) | |
| tree | 44a952b11a2eb8655373c482d09b221fc1158061 | |
| parent | ac2b80507d990bcc2d682cc1506741afcbcf2904 (diff) | |
| download | linux-stable-34c1416699777268bc753614bf61160a43f4e47c.tar.gz linux-stable-34c1416699777268bc753614bf61160a43f4e47c.tar.bz2 linux-stable-34c1416699777268bc753614bf61160a43f4e47c.zip | |
EDAC: Fix workqueues poll period resetting
commit fbedcaf43fba35677c01a4ae51e6f79edf4049ba upstream.
After the workqueue cleanup, we're registering workqueues based on
the presence of an ->edac_check function. When that is the case,
we're setting OP_RUNNING_POLL. But we forgot to check that in
edac_mc_reset_delay_period(), leading to:
BUG: unable to handle kernel paging request at 0000000000015d10
IP: [ .. ] queued_spin_lock_slowpath
PGD 3ffcc8067 PUD 3ffc56067 PMD 0
Oops: 0002 [#1] SMP
Modules linked in: ...
CPU: 1 PID: 2792 Comm: edactest Not tainted 4.6.0-dirty #1
Hardware name: HP ProLiant MicroServer, BIOS O41 10/01/2013
Stack:
Call Trace:
? _raw_spin_lock_irqsave
? lock_timer_base.isra.34
? del_timer
? try_to_grab_pending
? mod_delayed_work_on
? edac_mc_reset_delay_period
? edac_set_poll_msec
? param_attr_store
? module_attr_store
? kernfs_fop_write
? __vfs_write
? __vfs_read
? __alloc_fd
? vfs_write
? SyS_write
? entry_SYSCALL_64_fastpath
Code:
RIP [ .. ] queued_spin_lock_slowpath
RSP <>
CR2: 0000000000015d10
---[ end trace 3f286bc71cca15d1 ]---
Kernel panic - not syncing: Fatal exception
Fix it.
Signed-off-by: Nicholas Krause <xerofoify@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1463697958-13406-1-git-send-email-xerofoify@gmail.com
[ Rewrite commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/edac/edac_mc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 1472f48c8ac6..ff51b51d2fd4 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -565,7 +565,8 @@ void edac_mc_reset_delay_period(unsigned long value) list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); - edac_mod_work(&mci->work, value); + if (mci->op_state == OP_RUNNING_POLL) + edac_mod_work(&mci->work, value); } mutex_unlock(&mem_ctls_mutex); } |