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[23.128.96.18]) by mx.google.com with ESMTP id 26si258200ejk.553.2021.07.28.09.41.03; Wed, 28 Jul 2021 09:41:27 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@natalenko.name header.s=dkim-20170712 header.b=QDVveqDz; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=natalenko.name Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230041AbhG1Qip (ORCPT + 99 others); Wed, 28 Jul 2021 12:38:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229537AbhG1Qio (ORCPT ); Wed, 28 Jul 2021 12:38:44 -0400 Received: from vulcan.natalenko.name (vulcan.natalenko.name [IPv6:2001:19f0:6c00:8846:5400:ff:fe0c:dfa0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 665E5C061757 for ; Wed, 28 Jul 2021 09:38:42 -0700 (PDT) Received: from spock.localnet (unknown [151.237.229.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by vulcan.natalenko.name (Postfix) with ESMTPSA id 8D779B5CC4B; Wed, 28 Jul 2021 18:38:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=dkim-20170712; t=1627490317; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=92HAja+6ylk1CkWQqfTzssCgzq601utGLzS4LG/waJY=; b=QDVveqDzDznKs7hnbj0dSRjwMf7sUNae8/DEuVqWKqlg8QdyP1j+WlY21ghfH5uKVIdXVh 0kPvUiaDOq+BYbYYyhYCDKvMpF2CT58LbyFwi9IcrqFe0Bca6IagWLtKISt1jWxnobAzuJ xwfrh8yFnJbyRIxAnxx9m66t4HXnecE= From: Oleksandr Natalenko To: Ming Lei Cc: linux-kernel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Sagi Grimberg , linux-nvme@lists.infradead.org, David Jeffery , Laurence Oberman , Paolo Valente , Jan Kara , Sasha Levin , Greg Kroah-Hartman , Keith Busch Subject: Re: New warning in nvme_setup_discard Date: Wed, 28 Jul 2021 18:38:36 +0200 Message-ID: <4560968.zrxKzTJTGe@natalenko.name> In-Reply-To: References: <4729812.CpyZKHjjVO@natalenko.name> <3180854.nXyytZ0Y3r@natalenko.name> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello. On st=C5=99eda 28. =C4=8Dervence 2021 17:53:05 CEST Ming Lei wrote: > Can you collect debug log by applying the following patch against the > last one? Yes, please see below. > diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c > index 8780e4aa9df2..fbd8a68c619b 100644 > --- a/drivers/nvme/host/core.c > +++ b/drivers/nvme/host/core.c > @@ -828,6 +828,24 @@ static inline void nvme_setup_flush(struct nvme_ns *= ns, > cmnd->common.nsid =3D cpu_to_le32(ns->head->ns_id); > } >=20 > +static inline void blk_dump_rq(const struct request *req) > +{ > + struct bio *bio; > + int i =3D 0; > + > + printk("dump req %p(f:%x, seg: %d)\n", req, req->cmd_flags, > + req->nr_phys_segments); > + > + __rq_for_each_bio(bio, req) { > + printk("%d-%p: %hx/%hx %llu %u\n", > + i++, bio, > + bio->bi_flags, bio->bi_opf, > + (unsigned long long)bio->bi_iter.bi_sector, > + bio->bi_iter.bi_size>>9); > + } > +} > + > + > static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request > *req, struct nvme_command *cmnd) > { > @@ -868,6 +886,8 @@ static blk_status_t nvme_setup_discard(struct nvme_ns > *ns, struct request *req, } >=20 > if (WARN_ON_ONCE(n !=3D segments)) { > + printk("%s: ranges %u segments %u\n", __func__, n, segments); > + blk_dump_rq(req); > if (virt_to_page(range) =3D=3D ns->ctrl->discard_page) > clear_bit_unlock(0, &ns->ctrl->discard_page_busy); > else ``` WARNING: CPU: 17 PID: 821 at drivers/nvme/host/core.c:868 nvme_setup_discar= d+0x1c6/0x220 =E2=80=A6 CPU: 17 PID: 821 Comm: kworker/17:1H Not tainted 5.13.0-pf4 #1 Hardware name: ASUS System Product Name/Pro WS X570-ACE, BIOS 3601 05/26/20= 21 Workqueue: kblockd blk_mq_run_work_fn RIP: 0010:nvme_setup_discard+0x1c6/0x220 Code: 8b a0 40 0b 00 00 4c 2b 25 f7 ff d7 00 49 c1 fc 06 49 c1 e4 0c 4c 03 = 25 f8 ff d7 00 4c 89 e5 48 85 d2 0f 85 9b fe ff ff 31 d2 <0f> 0b 48 c7 c6 e= 0 a8 10 8b 41 0f b7 cd 48 c7 c7 af 09 40 8b e8 14 RSP: 0018:ffffafa884517bf0 EFLAGS: 00010297 RAX: ffff91602f5b20d0 RBX: ffff915e05743c00 RCX: 0000000000080000 RDX: 000000000000000f RSI: 0000000028445c00 RDI: 000000000000000f RBP: ffff91602f5b2000 R08: 000000000b366000 R09: ffff91602f5b2000 R10: 000000000000002d R11: fefefefefefefeff R12: ffff91602f5b2000 R13: 000000000000000e R14: ffff915e18c77000 R15: ffff915e18c77148 =46S: 0000000000000000(0000) GS:ffff91650ee40000(0000) knlGS:0000000000000= 000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00001c90b36879a8 CR3: 000000010d18c000 CR4: 0000000000350ee0 Call Trace: nvme_setup_cmd+0x2e4/0x6a0 nvme_queue_rq+0x79/0xc90 blk_mq_dispatch_rq_list+0x15c/0x810 __blk_mq_do_dispatch_sched+0xca/0x320 __blk_mq_sched_dispatch_requests+0x14d/0x190 blk_mq_sched_dispatch_requests+0x2f/0x60 blk_mq_run_work_fn+0x43/0xc0 process_one_work+0x24e/0x430 worker_thread+0x54/0x4d0 kthread+0x1b3/0x1e0 ret_from_fork+0x22/0x30 =2D--[ end trace bd51917eae1d7201 ]--- nvme_setup_discard: ranges 15 segments 14 dump req 000000002c6a085b(f:3, seg: 14) 0-000000002c3297c7: f80/3 675773440 1024 1-0000000098edb2a8: b80/3 188319744 1024 2-00000000f58e3b18: b80/3 675775488 1024 3-00000000f6670c5a: b80/3 188129280 2048 4-00000000ea371a88: b80/3 675585024 2048 5-00000000e9cec043: b80/3 188140544 2048 6-000000006e1126e6: b80/3 675596288 2048 7-000000009466f937: b80/3 188327936 2048 8-000000003c9e2ccd: b80/3 675783680 2048 9-00000000ab322c68: b80/3 188329984 2048 10-00000000eb2b3fb6: b80/3 675785728 2048 11-00000000aa19f73d: b80/3 188098560 4096 12-00000000dd2f8682: b80/3 675554304 4096 13-0000000072f20a8c: b80/3 188112896 1024 14-00000000559ba401: b80/3 675568640 1024 blk_update_request: I/O error, dev nvme1n1, sector 675773440 op 0x3:(DISCAR= D) flags 0x0 phys_seg 14 prio class 0 nvme_setup_discard: ranges 45 segments 48 dump req 00000000f96fdd7c(f:3, seg: 48) 0-00000000180da7f3: f82/3 188316672 1024 1-00000000d2d0828e: b82/3 675774464 1024 2-000000000c4882eb: b82/3 645145600 1024 3-000000009d701d1e: b82/3 188318720 1024 4-000000000b9e8e53: b82/3 675776512 1024 5-00000000c73ca145: b82/3 157696000 1024 6-00000000e22bbe77: b82/3 188320768 1024 7-0000000054696401: b82/3 675777536 1024 8-0000000016bc968c: b82/3 188321792 1024 9-000000006e25f763: b82/3 675779584 1024 10-00000000340df89d: b82/3 157765632 1024 11-0000000046522f81: b82/3 188323840 1024 12-00000000fa9a368c: b82/3 675780608 1024 13-0000000093af3f87: b82/3 188128256 1024 14-000000008585ce43: b82/3 675587072 1024 15-0000000044f73721: b82/3 188132352 1024 16-000000006c9df2f2: b82/3 675589120 1024 17-00000000c6f4ba8b: b82/3 675594240 1024 18-000000001f5dbb5e: b82/3 188138496 1024 19-000000001de03037: b82/3 188139520 1024 20-00000000a307ccef: b82/3 645164032 1024 21-0000000018da5076: b82/3 675598336 1024 22-0000000033cdeaf5: b82/3 188143616 1024 23-00000000ecf3d07a: b82/3 675600384 1024 24-00000000e86b10f4: b82/3 188144640 1024 25-00000000ba439495: b82/3 157726720 1024 26-0000000027fcd176: b82/3 641614848 1024 27-0000000014182edf: b82/3 157728768 1024 28-00000000194e904f: b82/3 157731840 1024 29-000000002ea97c9e: b82/3 675787776 1024 30-000000004d5c6130: b82/3 188332032 1024 31-0000000058639801: b82/3 675788800 1024 32-000000003dd731c7: b82/3 675789824 1024 33-00000000f6f8a09e: b82/3 645190656 1024 34-000000002d4c6b21: b82/3 188334080 1024 35-000000007ea3ba79: b82/3 675790848 1024 36-00000000011db072: b82/3 188064768 1024 37-00000000e31f9da8: b82/3 188067840 1024 38-000000006baa465a: b82/3 188097536 1024 39-00000000a870893c: b82/3 675559424 1024 40-000000004105bc56: b82/3 188103680 1024 41-00000000e75709b5: b82/3 675560448 1024 42-00000000e08f7e0a: b82/3 675566592 1024 43-0000000020218f1b: b82/3 188110848 1024 44-000000004bb5880a: b82/3 188111872 1024 45-00000000e6632009: b82/3 675569664 1024 46-0000000029e61303: b82/3 188114944 1024 47-000000006f66801c: b82/3 675571712 1024 blk_update_request: I/O error, dev nvme1n1, sector 188316672 op 0x3:(DISCAR= D) flags 0x0 phys_seg 48 prio class 0 nvme_setup_discard: ranges 73 segments 75 dump req 00000000b51b828c(f:3, seg: 75) 0-000000009c966abb: b82/3 675772416 1024 1-00000000d0b7b912: f80/3 675773440 1024 2-00000000c38e02dd: b80/3 188319744 1024 3-0000000043a53b40: b80/3 675775488 1024 4-000000009b5569c4: b80/3 188129280 2048 5-0000000066d31f07: b80/3 675585024 2048 6-000000006ff6d59f: b80/3 188140544 2048 7-00000000f39f9bdb: b80/3 675596288 2048 8-00000000929b3cff: b80/3 188327936 2048 9-0000000034c64365: b80/3 675783680 2048 10-000000004c508955: b80/3 188329984 2048 11-00000000fc9b9d0a: b80/3 675785728 2048 12-000000002a402a6c: b80/3 188098560 4096 13-0000000008074d32: b80/3 675554304 4096 14-0000000018d76730: b80/3 188112896 1024 15-000000003a12b456: b80/3 675568640 1024 16-00000000285092ed: b82/3 610962432 1024 17-000000005f714a72: b82/3 188342272 1024 18-00000000794c5e57: b82/3 611005440 1024 19-00000000630a4c01: b82/3 153951232 1024 20-00000000ffa4369f: b82/3 675798016 1024 21-00000000521f4eda: b82/3 188348416 1024 22-0000000041b3ca89: b82/3 17291264 1024 23-00000000e9c2e9f0: b82/3 17362944 1024 24-000000008f2954da: b82/3 599607296 1024 25-00000000805912ef: b82/3 611051520 1024 26-000000008533232e: b82/3 188336128 1024 27-00000000f9c0f9ae: b82/3 174541824 1024 28-00000000552ad7fc: b82/3 188318720 1024 29-000000009971d59c: b82/3 157689856 1024 30-0000000001ef1cc6: b82/3 675774464 1024 31-0000000037eddacb: b82/3 188320768 1024 32-00000000a2c8dd24: b82/3 645151744 1024 33-000000003e4d7ac7: b82/3 675776512 1024 34-000000000cb417af: b82/3 188321792 1024 35-0000000056c3e342: b82/3 675777536 1024 36-00000000ab22b292: b82/3 188323840 1024 37-0000000069b44eba: b82/3 645221376 1024 38-00000000a35eafb0: b82/3 675779584 1024 39-00000000f71cf77d: b82/3 188324864 1024 40-0000000011ba1e4e: b82/3 675584000 1024 41-0000000012ec22d4: b82/3 188131328 1024 42-00000000acf89f36: b82/3 675588096 1024 43-000000007fdfa2fc: b82/3 188133376 1024 44-000000006ae8f6de: b82/3 188138496 1024 45-00000000c86eaa59: b82/3 675594240 1024 46-00000000cbeecf93: b82/3 675595264 1024 47-0000000002061627: b82/3 157708288 1024 48-00000000c6c0e9fb: b82/3 188142592 1024 49-00000000aca0a548: b82/3 675599360 1024 50-00000000cf220d06: b82/3 188144640 1024 51-000000007a9bdfd3: b82/3 675600384 1024 52-000000009c6129de: b82/3 645182464 1024 53-000000006744fe84: b82/3 154159104 1024 54-00000000217342e3: b82/3 645184512 1024 55-00000000bc5fea55: b82/3 645187584 1024 56-00000000eb6093bd: b82/3 188332032 1024 57-0000000056371b99: b82/3 675787776 1024 58-0000000080e53e1e: b82/3 188333056 1024 59-0000000020cc4aa0: b82/3 188334080 1024 60-00000000dfb62a3e: b82/3 157734912 1024 61-00000000ff41dcf5: b82/3 675789824 1024 62-0000000042c2746d: b82/3 188335104 1024 63-00000000192eebcb: b82/3 675520512 1024 64-000000008725b451: b82/3 675523584 1024 65-00000000893843dc: b82/3 675553280 1024 66-00000000eab256cb: b82/3 188103680 1024 67-0000000046ef0487: b82/3 675559424 1024 68-000000000228f430: b82/3 188104704 1024 69-00000000386e9a99: b82/3 188110848 1024 70-000000008ced777c: b82/3 675566592 1024 71-000000008a5f9e82: b82/3 675567616 1024 72-0000000065da8656: b82/3 188113920 1024 73-00000000c938ac22: b82/3 675570688 1024 74-00000000c67c0e32: b82/3 188115968 1024 75-00000000646e12f4: b82/3 675760128 1024 76-0000000054aa9d13: b82/3 188305408 1024 blk_update_request: I/O error, dev nvme0n1, sector 675772416 op 0x3:(DISCAR= D) flags 0x0 phys_seg 75 prio class 0 nvme_setup_discard: ranges 5 segments 6 dump req 00000000a157e475(f:3, seg: 6) 0-000000004fc95770: f82/3 189429760 1024 1-000000003d5f4d39: b82/3 189432832 1024 2-000000003e3a5606: b82/3 676889600 1024 3-00000000d5b2b48e: b82/3 189433856 1024 4-00000000101795a9: b82/3 189434880 1024 5-000000001c3c352f: b82/3 184399872 1024 blk_update_request: I/O error, dev nvme1n1, sector 189429760 op 0x3:(DISCAR= D) flags 0x0 phys_seg 6 prio class 0 nvme_setup_discard: ranges 2 segments 3 dump req 00000000e17a5886(f:3, seg: 3) 0-000000007af7af24: b82/3 188352512 1024 1-000000003af3dbc9: f80/3 188353536 1024 2-00000000c4e5d7e7: b80/3 675809280 1024 3-00000000cb04663c: b82/3 675810304 1024 blk_update_request: I/O error, dev nvme1n1, sector 188352512 op 0x3:(DISCAR= D) flags 0x0 phys_seg 3 prio class 0 nvme_setup_discard: ranges 2 segments 3 dump req 00000000ad5525bd(f:3, seg: 3) 0-000000005cf09cca: b82/3 188348416 1024 1-0000000018cc2558: f80/3 188349440 1024 2-00000000c4c2a716: b80/3 675805184 1024 3-00000000a8908f6c: b82/3 675806208 1024 blk_update_request: I/O error, dev nvme1n1, sector 188348416 op 0x3:(DISCAR= D) flags 0x0 phys_seg 3 prio class 0 nvme_setup_discard: ranges 2 segments 3 dump req 00000000f96fdd7c(f:3, seg: 3) 0-000000009d4e946d: b82/3 189264896 1024 1-00000000d5eee140: f80/3 189265920 2048 2-00000000d84f9e26: b80/3 676721664 2048 3-0000000099245351: b82/3 676723712 1024 blk_update_request: I/O error, dev nvme1n1, sector 189264896 op 0x3:(DISCAR= D) flags 0x0 phys_seg 3 prio class 0 nvme_setup_discard: ranges 48 segments 49 dump req 0000000034977ea1(f:3, seg: 49) 0-00000000e4cae23d: f82/3 676881408 1024 1-0000000068dc7629: b82/3 676885504 1024 2-00000000f049ea5a: b82/3 676888576 1024 3-00000000c20d2ce8: b82/3 189433856 1024 4-000000004c139e91: b82/3 676889600 1024 5-0000000091100457: b82/3 676890624 1024 6-0000000076b82d71: b82/3 671855616 1024 7-000000003003717f: b82/3 144389120 1024 8-00000000f664d7bc: b82/3 188355584 1024 9-0000000004dffa3c: b82/3 675811328 1024 10-00000000333580c6: b82/3 188356608 1024 11-00000000b69a3602: b82/3 631820288 1024 12-00000000736b0c31: b80/3 188353536 1024 13-0000000007888c71: b80/3 675809280 1024 14-0000000003614d26: b82/3 675808256 1024 15-000000001a7ae177: b82/3 188354560 1024 16-000000008ab11bbd: b82/3 631758848 1024 17-00000000998c6d3c: b82/3 675807232 1024 18-0000000056d675a4: b82/3 188352512 1024 19-00000000854a6b1e: b80/3 188349440 1024 20-000000000b49b05e: b80/3 675805184 1024 21-000000008acc3b01: b82/3 675804160 1024 22-00000000315cb886: b82/3 188350464 1024 23-0000000086fb9348: b82/3 175320064 1024 24-000000006233dfd4: b82/3 188591104 1024 25-000000008022c2e2: b82/3 676046848 1024 26-000000002388ff7a: b82/3 188592128 1024 27-0000000024e54dc9: b82/3 188590080 1024 28-00000000e1706a07: b82/3 670319616 1024 29-00000000f5308dfc: b82/3 189270016 1024 30-00000000c005ae85: b80/3 189265920 2048 31-00000000a98ed3a6: b80/3 676721664 2048 32-000000003e7e01e1: b82/3 676720640 1024 33-000000003e9b0c86: b82/3 189267968 1024 34-00000000802b8160: b82/3 676716544 1024 35-00000000adf4fab8: b82/3 189257728 1024 36-000000007136233a: b82/3 676713472 1024 37-0000000085a35fca: b82/3 189258752 1024 38-000000008c8ed35f: b82/3 676710400 1024 39-00000000567baa73: b82/3 189255680 1024 40-0000000041ff7157: b82/3 676711424 1024 41-00000000fb3f4cd8: b82/3 189249536 1024 42-000000002efa7248: b82/3 676705280 1024 43-00000000a53bc3cb: b82/3 189239296 1024 44-000000006e6456e9: b82/3 676691968 1024 45-00000000f0fa291b: b82/3 676690944 1024 46-000000008b814484: b82/3 189234176 1024 47-00000000f3fa7f80: b82/3 676686848 1024 48-00000000e34ea3ca: b82/3 676679680 1024 blk_update_request: I/O error, dev nvme0n1, sector 676881408 op 0x3:(DISCAR= D) flags 0x0 phys_seg 49 prio class 0 nvme_setup_discard: ranges 9 segments 10 dump req 0000000066d1c6c7(f:3, seg: 10) 0-000000006f9c1d2b: f82/3 95788032 1024 1-000000005592941a: b82/3 155664384 1024 2-00000000180b2bab: b80/3 186275840 2048 3-00000000485a4757: b80/3 673731584 2048 4-00000000fcc93dcb: b82/3 673733632 1024 5-0000000089e0acd8: b80/3 186273792 1024 6-0000000005896717: b80/3 673729536 1024 7-00000000f264b15c: b82/3 186272768 1024 8-000000009684f15b: b82/3 673730560 1024 9-000000003a2a57b4: b82/3 175249408 1024 blk_update_request: I/O error, dev nvme1n1, sector 95788032 op 0x3:(DISCARD= ) flags 0x0 phys_seg 10 prio class 0 ``` Thanks. =2D-=20 Oleksandr Natalenko (post-factum)