On 3/8/22 21:01, David Ahern wrote:
On 3/8/22 12:46 PM, Tadeusz Struk wrote:
That fails in the same way:
skbuff: skb_over_panic: text:ffffffff83e7b48b len:65575 put:65575 head:ffff888101f8a000 data:ffff888101f8a088 tail:0x100af end:0x6c0 dev:<NULL> ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:113! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1852 Comm: repro Not tainted 5.17.0-rc7-00020-gea4424be1688-dirty #19 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1.fc35 RIP: 0010:skb_panic+0x173/0x175
I'm not sure how it supposed to help since it doesn't change the alloclen at all.
alloclen is a function of fraglen and fraglen is a function of datalen.
Ok, but in this case it doesn't affect the alloclen and it still fails.