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Thu, 16 Jun 2022 23:08:21 -0700 (PDT) Date: Thu, 16 Jun 2022 23:08:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000da07e205e19e94cf@google.com> Subject: [syzbot] BUG: sleeping function called from invalid context in __purge_vmap_area_lazy From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1655446102; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references; bh=Vq64f5Yo+ZtrtgGuEyyE62AarYLrNtpZHBOYMYaaxMA=; b=IZd4CM0RTSpIAGC4D2bvFZVcztpFzQn9N2cVzfVzccDewrwwpAoObuuVI5mz/pZ5PZ8P/9 uV5dQA2CjjI8Pp0It3egIRrssftb8FKUz0HczgdLa2/bEHw7oTK1cg8AarKS2AFUzwgNBq DY9CEQpJKKUIR85PMSajIS2YDOc7Rak= ARC-Authentication-Results: i=1; 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dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) X-HE-Tag: 1655446102-728055 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot found the following issue on: HEAD commit: 6012273897fe Add linux-next specific files for 20220615 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=16d2f608080000 kernel config: https://syzkaller.appspot.com/x/.config?x=b4154677977b1776 dashboard link: https://syzkaller.appspot.com/bug?extid=0bce0ec817c084f98c56 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 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+0bce0ec817c084f98c56@syzkaller.appspotmail.com BUG: sleeping function called from invalid context at mm/vmalloc.c:1759 BUG: sleeping function called from invalid context at mm/vmalloc.c:1759 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1795, name: kworker/1:2 preempt_count: 2, expected: 1 RCU nest depth: 0, expected: 0 4 locks held by kworker/1:2/1795: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90006c07da8 (drain_vmap_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8bebb028 (vmap_purge_lock){+.+.}-{3:3}, at: drain_vmap_area_work+0x44/0xe0 mm/vmalloc.c:1781 #3: ffffffff8bebb2f8 (free_vmap_area_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:360 [inline] #3: ffffffff8bebb2f8 (free_vmap_area_lock){+.+.}-{2:2}, at: __cond_resched_lock+0xa6/0xe0 kernel/sched/core.c:8306 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 1795 Comm: kworker/1:2 Not tainted 5.19.0-rc2-next-20220615-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events drain_vmap_area_work Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9823 __purge_vmap_area_lazy+0x95c/0x1c50 mm/vmalloc.c:1759 drain_vmap_area_work+0x52/0xe0 mm/vmalloc.c:1782 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 BUG: workqueue leaked lock or atomic: kworker/1:2/0x00000001/1795 last function: drain_vmap_area_work no locks held by kworker/1:2/1795. CPU: 1 PID: 1795 Comm: kworker/1:2 Tainted: G W 5.19.0-rc2-next-20220615-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events drain_vmap_area_work Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 process_one_work.cold+0x96/0xb8 kernel/workqueue.c:2304 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 BUG: scheduling while atomic: kworker/1:2/1795/0x00000002 no locks held by kworker/1:2/1795. Modules linked in: Preemption disabled at: [<0000000000000000>] 0x0 --- 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.