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.