From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=95.215.58.53 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792748449; b=WcGTWVcD381G0O2Rlocrwkp3mwiw+MmNXSlXAROX2suQ6hXwKt8vHpAYvbAJPZ/pBIOU TyXw8rR8VUkuNQQUdezPZBBq3kha/Yr05l3HZLEDlroasHOaEbBYcSNbZgOzu8piFVcpl 1cNCdCbfuSNxlXMIdeGKRSD8WFhT4atpqqbXsZk/CiBIBVkmz+F7qXbVj9Bbd9qxUXYNT WMDHUVImIPOOu6Fb3vWGUc9LSZi3bBYRtGgt0C/rEbxE8nQ6yX8KdPqqC1MN9dS1QgxKw TaNH79cQWDAaAUoEAEvZaX8fDmAdnz2BTtrHI+8NwgsfoGBhclvDdPOxc1xCIG2pkHw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792748449; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-Id: X-Mailer; bh=uquWcNQkXiniRBpFeipMHVKjDSQOfoDEc/iXj86smJU=; b=BQSjroBkznFXQIOOqO4zHk2M8dTutdCK2y0AZlOsnsrnhhyOfhIOmY6bVE1FWwPp9QIu RlrnWLH34srs+LkaehXAFKadqObc2YOS35EzKBXCNXnquHjB26e7p31kOnwHGrdPkY6Wf mnOpk2VDJL3CLr/Skb6Ykhp1heQIxgBuQU4oiiGvfiwV/a905RzeE9bm7Vs6V1QTYjIM8 PT8d+n3XA9b4b41BEbqCNncj0eUcD6ksaLkpAk511vfSqh90jBD7ACQeLD2eVnIPqOhD7 CVO21QQ10ze8OdkOBoEGenItpzErIu+1bvQGxI8l5J/m2I6LXzSVqmzXh/noaoPVvjw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=tVJ1MFFh; arc=none smtp.remote-ip=95.215.58.53 Received: from mta1.migadu.com (out-53.mta1.migadu.com [95.215.58.53]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D3851606A321 for ; Fri, 23 Oct 2026 09:40:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org D3851606A321 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=tVJ1MFFh X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=kDwNEdz0JjqvowwQuAeWm+wDsipeAOrPZIoLUGlOzP0=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792748447; v=1; x=1793353247; b=tVJ1MFFhWEBmjuD7Rcs8ahC+j2o7q6XvZGxo1Zuh898wIPsf+yh5E3IMSfkgbhBKg6Ta0qmT RPmMWEblXiNHErNCWUlMibaoUR+RUm0hXwJLnlqlh27Wsb472d1bdUb6u/+M5drHZSrGKysbMOF Hv9+3PPWvI0XNpoHYsBrgNbY= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 16891d252154ae9d; Fri, 23 Oct 2026 09:40:47 +0000 X-Mizu-Trace-ID: 16891d252154ae9d X-Migadu-Flow: FLOW_OUT From: Zqiang To: paulmck@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com, urezki@gmail.com, boqun@kernel.org Cc: qiang.zhang@linux.dev, rcu@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] rcutorture: Make tasks-tracing support duplicate call testing Date: Fri, 23 Oct 2026 17:40:39 +0800 Message-Id: <20261023094039.29696-1-qiang.zhang@linux.dev> X-Mailer: git-send-email 2.17.1 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list Currently, Tasks-tracing has been reimplemented by SRCU-fast, it supports the detection of duplicate calls with CONFIG_DEBUG_OBJECTS_RCU_HEAD=y. This commit therefore set tasks_tracing_ops.debug_objects to 1, enabling rcutorture's duplicate-call test for the tasks-tracing flavor. Signed-off-by: Zqiang --- Simple output from rcutorture: [ 4.120772][ T1] call_srcu(): Leaked duplicate callback [ 4.120776][ T1] WARNING: kernel/rcu/srcutree.c:1516 at __call_srcu+0x463/0x580, CPU#7: swapper/0/1 [ 4.122665][ T1] Modules linked in: [ 4.123026][ T1] CPU: 7 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W 7.3.0-rc1+ #110 PREEMPT(full) 8fac67ca5e4b530c23977b2e660a83979ea107db [ 4.124328][ T1] Tainted: [W]=WARN [ 4.124687][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 4.125583][ T1] RIP: 0010:__call_srcu+0x463/0x580 [ 4.126056][ T1] Code: 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 16 99 9f 03 80 3c 02 00 0f 85 e8 00 00 00 49 c7 46 08 70 cf 4e b4 48 8d 3d ad da d5 06 <67> 48 0f b9 3a eb a6 48 8d 3d af da d5 06 67 48 0f b9 3a eb 98 0f [ 4.127823][ T1] RSP: 0000:ffff888100e87a78 EFLAGS: 00010246 [ 4.128389][ T1] RAX: dffffc0000000000 RBX: 1ffff110201d0f54 RCX: 0000000000000001 [ 4.129111][ T1] RDX: 1ffff110201d0f8f RSI: ffffffffb8ae6d60 RDI: ffffffffbb255590 [ 4.129842][ T1] RBP: ffff888100e87b28 R08: ffff888100e87c70 R09: ffffffffb818a820 [ 4.130572][ T1] R10: fffffbfff76449ac R11: ffffffffbb224d67 R12: 0000000000000001 [ 4.131296][ T1] R13: 00000000ffffffea R14: ffff888100e87c70 R15: ffffffffba4c4220 [ 4.132061][ T1] FS: 0000000000000000(0000) GS:ffff888239af2000(0000) knlGS:0000000000000000 [ 4.132903][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.133536][ T1] CR2: 0000000000000000 CR3: 000000008a8ea000 CR4: 00000000000026f0 [ 4.134283][ T1] Call Trace: [ 4.134607][ T1] [ 4.134898][ T1] ? __pfx_rcu_torture_err_cb+0x10/0x10 [ 4.135425][ T1] ? __pfx___call_srcu+0x10/0x10 [ 4.135870][ T1] ? __pfx__printk+0x10/0x10 [ 4.136301][ T1] call_srcu+0x17/0x20 [ 4.136685][ T1] call_rcu_tasks_trace+0x1a/0x20 [ 4.137143][ T1] rcu_torture_init+0x3033/0x3800 [ 4.137617][ T1] ? __kvm_handle_async_pf+0x21/0xb0 [ 4.138094][ T1] ? __pfx_native_sched_clock+0x1/0x10 [ 4.138608][ T1] ? __pfx_rcu_torture_init+0x10/0x10 [ 4.139109][ T1] ? add_device_randomness+0xcb/0x110 [ 4.139637][ T1] ? __this_cpu_preempt_check+0x17/0x20 [ 4.140160][ T1] ? lockdep_hardirqs_on+0xde/0x160 [ 4.140653][ T1] ? _raw_spin_unlock_irqrestore+0x6e/0x80 [ 4.141211][ T1] ? _raw_spin_unlock_irqrestore+0x53/0x80 [ 4.141772][ T1] ? __pfx_rcu_torture_leak_cb+0x10/0x10 [ 4.142291][ T1] ? add_device_randomness+0xcb/0x110 [ 4.142828][ T1] ? __pfx_add_device_randomness+0x10/0x10 [ 4.143397][ T1] ? __pfx_srcu_leak_callback+0x10/0x10 [ 4.143937][ T1] ? __pfx_rcu_torture_init+0x10/0x10 [ 4.144440][ T1] do_one_initcall+0xd9/0x620 [ 4.144878][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 4.145390][ T1] ? __kasan_kmalloc+0x86/0xa0 [ 4.145963][ T1] ? __kmalloc_noprof+0x2c9/0x610 [ 4.146576][ T1] kernel_init_freeable+0xb00/0x11a0 [ 4.147214][ T1] ? __pfx_kernel_init+0x10/0x10 [ 4.147804][ T1] kernel_init+0x28/0x170 [ 4.148308][ T1] ret_from_fork+0x7be/0xaf0 [ 4.148880][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 4.149512][ T1] ? __kasan_check_read+0x15/0x20 [ 4.150111][ T1] ? __switch_to+0x1b0/0xeb0 [ 4.150778][ T1] ? __switch_to_asm+0x39/0x70 [ 4.151324][ T1] ? __pfx_kernel_init+0x10/0x10 [ 4.151910][ T1] ret_from_fork_asm+0x1a/0x30 kernel/rcu/rcutorture.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 1bbf8192786a..c0c8fbdb5508 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1313,6 +1313,7 @@ static struct rcu_torture_ops tasks_tracing_ops = { .irq_capable = 1, .slow_gps = 1, .nmi_capable = 1, + .debug_objects = 1, .name = "tasks-tracing" }; -- 2.17.1