Re: [syzbot] [tipc?] kernel BUG in __pskb_pull_tail
From: Hillf Danton <hidden>
Date: 2024-12-13 23:08:45
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On Thu, 12 Dec 2024 14:20:26 -0800
syzbot found the following issue on: HEAD commit: 96b6fcc0ee41 Merge branch 'net-dsa-cleanup-eee-part-1' git tree: net-next C reproducer: https://syzkaller.appspot.com/x/repro.c?x=117844f8580000
Test fix (https://patchwork.kernel.org/project/netdevbpf/patch/20241212222247.724674-1-edumazet@google.com/ ) #syz test
--- x/drivers/net/tun.c
+++ y/drivers/net/tun.c@@ -1485,7 +1485,7 @@ static struct sk_buff *tun_napi_alloc_fr skb->truesize += skb->data_len; for (i = 1; i < it->nr_segs; i++) { - const struct iovec *iov = iter_iov(it); + const struct iovec *iov = iter_iov(it) + i; size_t fragsz = iov->iov_len; struct page *page; void *frag; --