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bcachefs: Fix memmove when move keys down

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The fix alone doesn't fix [1], but should be applied before debugging
that.

[1] https://syzkaller.appspot.com/bug?extid=38a0cbd267eff2d286ff

Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Alan Huang 2025-02-20 18:56:08 +08:00 • committed by Kent Overstreet
parent 68aaa63716
commit c522093b02
1 changed files with 1 additions and 1 deletions
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2
fs/bcachefs/btree_io.c
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@ -996,7 +996,7 @@ drop_this_key:
}
got_good_key:
le16_add_cpu(&i->u64s, -next_good_key);
memmove_u64s_down(k, bkey_p_next(k), (u64 *) vstruct_end(i) - (u64 *) k);
memmove_u64s_down(k, (u64 *) k + next_good_key, (u64 *) vstruct_end(i) - (u64 *) k);
set_btree_node_need_rewrite(b);
}
fsck_err: