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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 EF163C61DD8 for ; Sat, 14 Nov 2020 08:42:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A70012222F for ; Sat, 14 Nov 2020 08:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726579AbgKNImW (ORCPT ); Sat, 14 Nov 2020 03:42:22 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:35019 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id 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X-Received: by 2002:a02:cc84:: with SMTP id s4mr4891080jap.126.1605343339722; Sat, 14 Nov 2020 00:42:19 -0800 (PST) Date: Sat, 14 Nov 2020 00:42:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000081bcd205b40d1f44@google.com> Subject: bpf test error: BUG: sleeping function called from invalid context in sta_info_move_state From: syzbot To: ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 96021828 MAINTAINERS/bpf: Update Andrii's entry. git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=102717be500000 kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff dashboard link: https://syzkaller.appspot.com/bug?extid=5921b7c1b10a0ddd02bc compiler: gcc (GCC) 10.1.0-syz 20200507 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5921b7c1b10a0ddd02bc@syzkaller.appspotmail.com BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 124, name: kworker/u4:3 4 locks held by kworker/u4:3/124: #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243 #1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247 #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline] #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683 #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 net/mac80211/sta_info.c:732 Preemption disabled at: [] __mutex_lock_common kernel/locking/mutex.c:955 [inline] [] __mutex_lock+0x10f/0x10e0 kernel/locking/mutex.c:1103 CPU: 0 PID: 124 Comm: kworker/u4:3 Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy4 ieee80211_iface_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 ___might_sleep.cold+0x1e8/0x22e kernel/sched/core.c:7298 sta_info_move_state+0x32/0x8d0 net/mac80211/sta_info.c:1962 sta_info_free+0x65/0x3b0 net/mac80211/sta_info.c:274 sta_info_insert_rcu+0x303/0x2ba0 net/mac80211/sta_info.c:738 ieee80211_ibss_finish_sta+0x212/0x390 net/mac80211/ibss.c:592 ieee80211_ibss_work+0x2c7/0xe80 net/mac80211/ibss.c:1700 ieee80211_iface_work+0x82e/0x970 net/mac80211/iface.c:1476 process_one_work+0x933/0x15a0 kernel/workqueue.c:2272 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418 kthread+0x3af/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 ============================= [ BUG: Invalid wait context ] 5.10.0-rc2-syzkaller #0 Tainted: G W ----------------------------- kworker/u4:3/124 is trying to lock: ffff888035f2a9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 net/mac80211/util.c:2740 other info that might help us debug this: context-{4:4} 4 locks held by kworker/u4:3/124: #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243 #1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247 #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline] #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683 #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 net/mac80211/sta_info.c:732 stack backtrace: CPU: 0 PID: 124 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy4 ieee80211_iface_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 print_lock_invalid_wait_context kernel/locking/lockdep.c:4483 [inline] check_wait_context kernel/locking/lockdep.c:4544 [inline] __lock_acquire.cold+0x310/0x3a2 kernel/locking/lockdep.c:4781 lock_acquire kernel/locking/lockdep.c:5436 [inline] lock_acquire+0x2a3/0x8c0 kernel/locking/lockdep.c:5401 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103 ieee80211_recalc_min_chandef+0x49/0x140 net/mac80211/util.c:2740 sta_info_move_state+0x3cf/0x8d0 net/mac80211/sta_info.c:2019 sta_info_free+0x65/0x3b0 net/mac80211/sta_info.c:274 sta_info_insert_rcu+0x303/0x2ba0 net/mac80211/sta_info.c:738 ieee80211_ibss_finish_sta+0x212/0x390 net/mac80211/ibss.c:592 ieee80211_ibss_work+0x2c7/0xe80 net/mac80211/ibss.c:1700 ieee80211_iface_work+0x82e/0x970 net/mac80211/iface.c:1476 process_one_work+0x933/0x15a0 kernel/workqueue.c:2272 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418 kthread+0x3af/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 --- 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.