On Fri, Feb 06, 2026 at 09:39:16AM -0800, Alexei Starovoitov wrote: > On Tue, Feb 3, 2026 at 8:18 AM Larysa Zaremba <[email protected]> > wrote: > > > > While working on XDP and AF_XDP support for ixgbevf driver, > > I came across two distinct problems that caused tests to fail > > when they shouldn't have. > > Applied. > > What is the status of kernel side fixes? > > Running test_xsk.sh I see plenty of > > [ 93.609026] BUG: Bad page state in process xskxceiver pfn:115920 > ... > [ 93.633927] bad_page.cold+0xd0/0x140 > [ 93.633929] __free_frozen_pages+0x85a/0x1150 > [ 93.633935] bpf_xdp_adjust_tail+0x808/0x1120
I believe the call trace that you see when running test_xsk.sh is due to test 24: XDP_ADJUST_TAIL_SHRINK_MULTI_BUFF. I have this call trace too, when running automated veth test and when running xskxceiver in skb mode on a page-pool-using driver (WiP ixgbevf). The problem is specifically in the skb mode. The patchset I have recently submitted fixes tail-growing in multi-buffer packets, veth is not affected. Those issues are weirdly not related in any way. Maciej has submitted a patchset that fixes the skb mode some time ago [0], I can confirm it gets rid of the call traces. [0] https://lore.kernel.org/bpf/[email protected]/#t
