62 lines
1.9 KiB
Diff
62 lines
1.9 KiB
Diff
From 0d82d779bc37f5718c8b6af856cb46a875455041 Mon Sep 17 00:00:00 2001
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Fri, 17 Nov 2017 16:21:00 +0100
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Subject: [PATCH 328/365] md/raid5: do not disable interrupts
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|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974
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|in_atomic(): 0, irqs_disabled(): 1, pid: 2992, name: lvm
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|CPU: 2 PID: 2992 Comm: lvm Not tainted 4.13.10-rt3+ #54
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|Call Trace:
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| dump_stack+0x4f/0x65
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| ___might_sleep+0xfc/0x150
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| atomic_dec_and_spin_lock+0x3c/0x80
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| raid5_release_stripe+0x73/0x110
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| grow_one_stripe+0xce/0xf0
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| setup_conf+0x841/0xaa0
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| raid5_run+0x7e7/0xa40
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| md_run+0x515/0xaf0
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| raid_ctr+0x147d/0x25e0
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| dm_table_add_target+0x155/0x320
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| table_load+0x103/0x320
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| ctl_ioctl+0x1d9/0x510
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| dm_ctl_ioctl+0x9/0x10
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| do_vfs_ioctl+0x8e/0x670
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| SyS_ioctl+0x3c/0x70
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| entry_SYSCALL_64_fastpath+0x17/0x98
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The interrupts were disabled because ->device_lock is taken with
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interrupts disabled.
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Cc: stable-rt@vger.kernel.org
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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---
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drivers/md/raid5.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
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index 14f15ae1fbf9..f16006823f92 100644
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--- a/drivers/md/raid5.c
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+++ b/drivers/md/raid5.c
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@@ -428,7 +428,7 @@ void raid5_release_stripe(struct stripe_head *sh)
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md_wakeup_thread(conf->mddev->thread);
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return;
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slow_path:
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- local_irq_save(flags);
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+ local_irq_save_nort(flags);
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/* we are ok here if STRIPE_ON_RELEASE_LIST is set or not */
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if (atomic_dec_and_lock(&sh->count, &conf->device_lock)) {
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INIT_LIST_HEAD(&list);
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@@ -437,7 +437,7 @@ void raid5_release_stripe(struct stripe_head *sh)
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spin_unlock(&conf->device_lock);
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release_inactive_stripe_list(conf, &list, hash);
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}
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- local_irq_restore(flags);
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+ local_irq_restore_nort(flags);
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}
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static inline void remove_hash(struct stripe_head *sh)
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--
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2.28.0
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