From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9FDACC433B4 for ; Fri, 16 Apr 2021 04:35:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 794146108D for ; Fri, 16 Apr 2021 04:35:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237799AbhDPEfl (ORCPT ); Fri, 16 Apr 2021 00:35:41 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:40667 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237675AbhDPEfl (ORCPT ); Fri, 16 Apr 2021 00:35:41 -0400 Received: by mail-il1-f199.google.com with SMTP id d3-20020a056e021c43b029016bec7d6e48so5372355ilg.7 for ; Thu, 15 Apr 2021 21:35:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=vQTgohi03z5tK7Cg1hw3ZJisST4UH/MCqTpc+mpUM3w=; b=iCGlv/szL4ckXEqEMugHJ6YWbbntVu/5iltczb7m7/c1FWR53jtA51DvN2POECy1UU zQOYOY/LWAY6HF6baLn1NP0n/dh6CnmgQ/aGmCoUecsU0uB2IB4MGueQ9BwQtqRlTuj5 Hg8m80QPzuwr5QzwZlDe3C1gz25GDfOJuvv1DgQDLAQtWY9CrGykYny9+iVAhlNPKI05 hRKPxojeZL/6vA61lUkicIutJKScm7MD4mt6ijXVVJvDJSrmbEHyeEFSYe9AXPWKbueG wc7bZDq34cDoQ1OsawAuS2r8fluhzpmbY4TQLezM+je2S0n4XGgL2oWVPEdmfAqGqpku P4xA== X-Gm-Message-State: AOAM532/97EnS5XZm9GEENW+maVyimPgbtEAF1fGC6RuzLK6hckaiX8q cT4WT2HGW33BvnMCq7elbm7xcy53m3PTGb/oYcDnMq2qyuWU X-Google-Smtp-Source: ABdhPJw1usrwJxPJNZPdyxUalJuLF2O2KN2oetB1VB36jzdNFtg6/b+WSHV39d4QGIjC1xLB7NXq3r61gkbTcUaBrhhTb6j06Uy0 MIME-Version: 1.0 X-Received: by 2002:a5e:8419:: with SMTP id h25mr1970510ioj.43.1618547715699; Thu, 15 Apr 2021 21:35:15 -0700 (PDT) Date: Thu, 15 Apr 2021 21:35:15 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a5772005c00f8101@google.com> Subject: [syzbot] WARNING in ctx_sched_in From: syzbot To: acme@kernel.org, alexander.shishkin@linux.intel.com, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, jolsa@redhat.com, kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org, netdev@vger.kernel.org, peterz@infradead.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 79c338ab riscv: keep interrupts disabled for BREAKPOINT ex.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=10fb93f9d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=f8af20e245283c9a dashboard link: https://syzkaller.appspot.com/bug?extid=50d41b514809f6f4f326 userspace arch: riscv64 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+50d41b514809f6f4f326@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4475 at kernel/events/core.c:3752 ctx_sched_in+0x12e/0x3ee kernel/events/core.c:3752 Modules linked in: CPU: 1 PID: 4475 Comm: syz-executor.1 Not tainted 5.12.0-rc6-syzkaller-00183-g79c338ab575e #0 Hardware name: riscv-virtio,qemu (DT) epc : ctx_sched_in+0x12e/0x3ee kernel/events/core.c:3752 ra : ctx_sched_in+0x12e/0x3ee kernel/events/core.c:3752 epc : ffffffe000279fe8 ra : ffffffe000279fe8 sp : ffffffe009e17680 gp : ffffffe004588ad0 tp : ffffffe006398000 t0 : 0000000000000000 t1 : 0000000000000001 t2 : 00000000000f4240 s0 : ffffffe009e176f0 s1 : ffffffe0077edc00 a0 : ffffffe067d79118 a1 : 00000000000f0000 a2 : 0000000000000002 a3 : ffffffe000279fe8 a4 : ffffffe006399000 a5 : 0000000040000000 a6 : 0000000000f00000 a7 : ffffffe000280cc8 s2 : 0000000000000007 s3 : ffffffe0077edd40 s4 : ffffffe006398000 s5 : 0000000000000002 s6 : ffffffe00458c0d0 s7 : ffffffe067d78f70 s8 : 0000000000000007 s9 : ffffffe067d79118 s10: ffffffe0077edc00 s11: ffffffe0077edc08 t3 : e189d98bb4bfb900 t4 : ffffffc4042c47b2 t5 : ffffffc4042c47ba t6 : 0000000000040000 status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003 Call Trace: [] ctx_sched_in+0x12e/0x3ee kernel/events/core.c:3752 [] perf_event_sched_in+0x38/0x74 kernel/events/core.c:2680 [] perf_event_context_sched_in kernel/events/core.c:3817 [inline] [] __perf_event_task_sched_in+0x4ea/0x680 kernel/events/core.c:3860 [] perf_event_task_sched_in include/linux/perf_event.h:1210 [inline] [] finish_task_switch.isra.0+0x284/0x318 kernel/sched/core.c:4189 [] context_switch kernel/sched/core.c:4325 [inline] [] __schedule+0x484/0xe8c kernel/sched/core.c:5073 [] preempt_schedule_notrace+0x9c/0x19a kernel/sched/core.c:5312 [] rcu_read_unlock_sched_notrace include/linux/rcupdate.h:794 [inline] [] trace_lock_acquire+0xf0/0x20e include/trace/events/lock.h:13 [] lock_acquire+0x28/0x5a kernel/locking/lockdep.c:5481 [] rcu_lock_acquire include/linux/rcupdate.h:267 [inline] [] rcu_read_lock include/linux/rcupdate.h:656 [inline] [] percpu_ref_put_many.constprop.0+0x38/0x148 include/linux/percpu-refcount.h:317 [] percpu_ref_put include/linux/percpu-refcount.h:338 [inline] [] obj_cgroup_put include/linux/memcontrol.h:713 [inline] [] memcg_slab_free_hook mm/slab.h:372 [inline] [] memcg_slab_free_hook mm/slab.h:336 [inline] [] do_slab_free mm/slub.c:3117 [inline] [] ___cache_free+0x2bc/0x3dc mm/slub.c:3168 [] qlink_free mm/kasan/quarantine.c:146 [inline] [] qlist_free_all+0x56/0xac mm/kasan/quarantine.c:165 [] kasan_quarantine_reduce+0x14c/0x1c8 mm/kasan/quarantine.c:272 [] __kasan_slab_alloc+0x60/0x62 mm/kasan/common.c:437 [] kasan_slab_alloc include/linux/kasan.h:223 [inline] [] slab_post_alloc_hook mm/slab.h:516 [inline] [] slab_alloc_node mm/slub.c:2907 [inline] [] slab_alloc mm/slub.c:2915 [inline] [] kmem_cache_alloc+0x168/0x3ca mm/slub.c:2920 [] kmem_cache_zalloc include/linux/slab.h:674 [inline] [] taskstats_tgid_alloc kernel/taskstats.c:561 [inline] [] taskstats_exit+0x3ce/0x5fe kernel/taskstats.c:600 [] do_exit+0x3b2/0x1846 kernel/exit.c:810 [] do_group_exit+0xa0/0x198 kernel/exit.c:922 [] get_signal+0x31e/0x14ba kernel/signal.c:2781 [] do_signal arch/riscv/kernel/signal.c:271 [inline] [] do_notify_resume+0xa8/0x930 arch/riscv/kernel/signal.c:317 [] ret_from_exception+0x0/0x14 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.