md: raid5 crash during degradation
NULL pointer access causes crash in raid5 module. Signed-off-by: Adam Kwolek <adam.kwolek@intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
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@ -3070,7 +3070,7 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
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if (sh->sector + STRIPE_SECTORS <= rdev->recovery_offset)
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set_bit(R5_Insync, &dev->flags);
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}
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if (test_bit(R5_WriteError, &dev->flags)) {
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if (rdev && test_bit(R5_WriteError, &dev->flags)) {
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clear_bit(R5_Insync, &dev->flags);
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if (!test_bit(Faulty, &rdev->flags)) {
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s->handle_bad_blocks = 1;
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@ -3078,7 +3078,7 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
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} else
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clear_bit(R5_WriteError, &dev->flags);
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}
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if (test_bit(R5_MadeGood, &dev->flags)) {
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if (rdev && test_bit(R5_MadeGood, &dev->flags)) {
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if (!test_bit(Faulty, &rdev->flags)) {
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s->handle_bad_blocks = 1;
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atomic_inc(&rdev->nr_pending);
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