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Wed, 07 Jan 2026 15:45:41 -0800 (PST) Date: Wed, 07 Jan 2026 15:45:41 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <695ef025.050a0220.1c677c.0385.GAE@google.com> Subject: [moderation/CI] Re: bpf: Avoid locks in bpf_timer and bpf_wq From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v3] bpf: Avoid locks in bpf_timer and bpf_wq https://lore.kernel.org/all/20260107-timer_nolock-v3-0-740d3ec3e5f9@meta.com * [PATCH RFC v3 01/10] bpf: Refactor __bpf_async_set_callback() * [PATCH RFC v3 02/10] bpf: Factor out timer deletion helper * [PATCH RFC v3 03/10] bpf: Simplify bpf_timer_cancel() * [PATCH RFC v3 04/10] bpf: Add lock-free cell for NMI-safe async operations * [PATCH RFC v3 05/10] bpf: Enable bpf timer and workqueue use in NMI * [PATCH RFC v3 06/10] bpf: Add verifier support for bpf_timer argument in kfuncs * [PATCH RFC v3 07/10] bpf: Introduce bpf_timer_cancel_async() kfunc * [PATCH RFC v3 08/10] selftests/bpf: Refactor timer selftests * [PATCH RFC v3 09/10] selftests/bpf: Add stress test for timer async cancel * [PATCH RFC v3 10/10] selftests/bpf: Verify bpf_timer_cancel_async works and found the following issue: kernel build error Full report is available here: https://ci.syzbot.org/series/595c48b9-bc4e-4ede-847d-8f2d847f2dcb *** kernel build error tree: bpf-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next.git base: a069190b590e108223cd841a1c2d0bfb92230ecc arch: amd64 compiler: Debian clang version 21.1.8 (++20251202083448+f68f64eb8130-1~exp1~20251202083504.46), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/429abbbb-1b09-420d-ada7-16187822d5b4/config kernel/bpf/helpers.c:32:10: error: 'mpmc_cell.h' file not found with include; use "quotes" instead *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. The email will later be sent to: [andrii@kernel.org ast@kernel.org bpf@vger.kernel.org daniel@iogearbox.net eddyz87@gmail.com kafai@meta.com kernel-team@meta.com memxor@gmail.com mykyta.yatsenko5@gmail.com yatsenko@meta.com] If the report looks fine to you, reply with: #syz upstream If the report is a false positive, reply with #syz invalid