From 94d3ad1486f057930379664704ffec4a838faf36 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 17 Nov 2017 16:21:00 +0100 Subject: [PATCH] md/raid5: do not disable interrupts |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974 |in_atomic(): 0, irqs_disabled(): 1, pid: 2992, name: lvm |CPU: 2 PID: 2992 Comm: lvm Not tainted 4.13.10-rt3+ #54 |Call Trace: | dump_stack+0x4f/0x65 | ___might_sleep+0xfc/0x150 | atomic_dec_and_spin_lock+0x3c/0x80 | raid5_release_stripe+0x73/0x110 | grow_one_stripe+0xce/0xf0 | setup_conf+0x841/0xaa0 | raid5_run+0x7e7/0xa40 | md_run+0x515/0xaf0 | raid_ctr+0x147d/0x25e0 | dm_table_add_target+0x155/0x320 | table_load+0x103/0x320 | ctl_ioctl+0x1d9/0x510 | dm_ctl_ioctl+0x9/0x10 | do_vfs_ioctl+0x8e/0x670 | SyS_ioctl+0x3c/0x70 | entry_SYSCALL_64_fastpath+0x17/0x98 The interrupts were disabled because ->device_lock is taken with interrupts disabled. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt (VMware) --- drivers/md/raid5.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 08b048014e8b17..cfd153e50fa664 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -428,7 +428,7 @@ void raid5_release_stripe(struct stripe_head *sh) md_wakeup_thread(conf->mddev->thread); return; slow_path: - local_irq_save(flags); + local_irq_save_nort(flags); /* we are ok here if STRIPE_ON_RELEASE_LIST is set or not */ if (atomic_dec_and_lock(&sh->count, &conf->device_lock)) { INIT_LIST_HEAD(&list); @@ -437,7 +437,7 @@ void raid5_release_stripe(struct stripe_head *sh) spin_unlock(&conf->device_lock); release_inactive_stripe_list(conf, &list, hash); } - local_irq_restore(flags); + local_irq_restore_nort(flags); } static inline void remove_hash(struct stripe_head *sh)