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Mon, 23 Feb 2026 09:24:16 -0800 (PST) From: Jaskaran Singh To: stable@vger.kernel.org, james.smart@broadcom.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, Jaskaran Singh Subject: [PATCH 6.1.y 1/2] Revert "nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl()" Date: Mon, 23 Feb 2026 22:54:04 +0530 Message-Id: <20260223172405.292040-2-jsingh@cloudlinux.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260223172405.292040-1-jsingh@cloudlinux.com> References: <20260223172405.292040-1-jsingh@cloudlinux.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This reverts commit 3d81beae4753db3b3dc5b70dc300d4036e0d9cb8. The backport of upstream commit 0a2c5495b6d1 was incorrectly applied. The cancel_work_sync() call for ->ioerr_work was added to nvme_fc_reset_ctrl_work() instead of nvme_fc_delete_ctrl(). Signed-off-by: Jaskaran Singh --- drivers/nvme/host/fc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 63bef22095b4..9b5976c80803 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -3264,6 +3264,7 @@ nvme_fc_delete_ctrl(struct nvme_ctrl *nctrl) { struct nvme_fc_ctrl *ctrl =3D to_fc_ctrl(nctrl); =20 + cancel_work_sync(&ctrl->ioerr_work); cancel_delayed_work_sync(&ctrl->connect_work); /* * kill the association on the link side. this will block @@ -3334,7 +3335,6 @@ nvme_fc_reset_ctrl_work(struct work_struct *work) =20 /* will block will waiting for io to terminate */ nvme_fc_delete_association(ctrl); - cancel_work_sync(&ctrl->ioerr_work); =20 if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) dev_err(ctrl->ctrl.device, --=20 2.43.7 From nobody Fri Apr 17 04:46:28 2026 Received: from mail-pf1-f180.google.com (mail-pf1-f180.google.com [209.85.210.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA4671D63F3 for ; 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Mon, 23 Feb 2026 09:24:20 -0800 (PST) Received: from outpost.localdomain ([110.44.9.85]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c70b724321esm7802332a12.16.2026.02.23.09.24.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Feb 2026 09:24:20 -0800 (PST) From: Jaskaran Singh To: stable@vger.kernel.org, james.smart@broadcom.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, Jaskaran Singh , Marco Patalano , Justin Tee , "Ewan D . Milne" Subject: [PATCH 6.1.y 2/2] nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl() Date: Mon, 23 Feb 2026 22:54:05 +0530 Message-Id: <20260223172405.292040-3-jsingh@cloudlinux.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260223172405.292040-1-jsingh@cloudlinux.com> References: <20260223172405.292040-1-jsingh@cloudlinux.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" commit 0a2c5495b6d1ecb0fa18ef6631450f391a888256 upstream. nvme_fc_delete_assocation() waits for pending I/O to complete before returning, and an error can cause ->ioerr_work to be queued after cancel_work_sync() had been called. Move the call to cancel_work_sync() to be after nvme_fc_delete_association() to ensure ->ioerr_work is not running when the nvme_fc_ctrl object is freed. Otherwise the following can occur: [ 1135.911754] list_del corruption, ff2d24c8093f31f8->next is NULL [ 1135.917705] ------------[ cut here ]------------ [ 1135.922336] kernel BUG at lib/list_debug.c:52! [ 1135.926784] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 1135.931851] CPU: 48 UID: 0 PID: 726 Comm: kworker/u449:23 Kdump: loaded = Not tainted 6.12.0 #1 PREEMPT(voluntary) [ 1135.943490] Hardware name: Dell Inc. PowerEdge R660/0HGTK9, BIOS 2.5.4 0= 1/16/2025 [ 1135.950969] Workqueue: 0x0 (nvme-wq) [ 1135.954673] RIP: 0010:__list_del_entry_valid_or_report.cold+0xf/0x6f [ 1135.961041] Code: c7 c7 98 68 72 94 e8 26 45 fe ff 0f 0b 48 c7 c7 70 68 = 72 94 e8 18 45 fe ff 0f 0b 48 89 fe 48 c7 c7 80 69 72 94 e8 07 45 fe ff <0f= > 0b 48 89 d1 48 c7 c7 a0 6a 72 94 48 89 c2 e8 f3 44 fe ff 0f 0b [ 1135.979788] RSP: 0018:ff579b19482d3e50 EFLAGS: 00010046 [ 1135.985015] RAX: 0000000000000033 RBX: ff2d24c8093f31f0 RCX: 00000000000= 00000 [ 1135.992148] RDX: 0000000000000000 RSI: ff2d24d6bfa1d0c0 RDI: ff2d24d6bfa= 1d0c0 [ 1135.999278] RBP: ff2d24c8093f31f8 R08: 0000000000000000 R09: ffffffff951= e2b08 [ 1136.006413] R10: ffffffff95122ac8 R11: 0000000000000003 R12: ff2d24c7869= 7c100 [ 1136.013546] R13: fffffffffffffff8 R14: 0000000000000000 R15: ff2d24c7869= 7c0c0 [ 1136.020677] FS: 0000000000000000(0000) GS:ff2d24d6bfa00000(0000) knlGS:= 0000000000000000 [ 1136.028765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1136.034510] CR2: 00007fd207f90b80 CR3: 000000163ea22003 CR4: 0000000000f= 73ef0 [ 1136.041641] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000= 00000 [ 1136.048776] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 00000000000= 00400 [ 1136.055910] PKRU: 55555554 [ 1136.058623] Call Trace: [ 1136.061074] [ 1136.063179] ? show_trace_log_lvl+0x1b0/0x2f0 [ 1136.067540] ? show_trace_log_lvl+0x1b0/0x2f0 [ 1136.071898] ? move_linked_works+0x4a/0xa0 [ 1136.075998] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.081744] ? __die_body.cold+0x8/0x12 [ 1136.085584] ? die+0x2e/0x50 [ 1136.088469] ? do_trap+0xca/0x110 [ 1136.091789] ? do_error_trap+0x65/0x80 [ 1136.095543] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.101289] ? exc_invalid_op+0x50/0x70 [ 1136.105127] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.110874] ? asm_exc_invalid_op+0x1a/0x20 [ 1136.115059] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.120806] move_linked_works+0x4a/0xa0 [ 1136.124733] worker_thread+0x216/0x3a0 [ 1136.128485] ? __pfx_worker_thread+0x10/0x10 [ 1136.132758] kthread+0xfa/0x240 [ 1136.135904] ? __pfx_kthread+0x10/0x10 [ 1136.139657] ret_from_fork+0x31/0x50 [ 1136.143236] ? __pfx_kthread+0x10/0x10 [ 1136.146988] ret_from_fork_asm+0x1a/0x30 [ 1136.150915] Fixes: 19fce0470f05 ("nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios= from interrupt context") Cc: stable@vger.kernel.org Tested-by: Marco Patalano Reviewed-by: Justin Tee Signed-off-by: Ewan D. Milne Signed-off-by: Keith Busch Signed-off-by: Greg Kroah-Hartman Signed-off-by: Jaskaran Singh --- drivers/nvme/host/fc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 9b5976c80803..a355db38edc8 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -3264,13 +3264,13 @@ nvme_fc_delete_ctrl(struct nvme_ctrl *nctrl) { struct nvme_fc_ctrl *ctrl =3D to_fc_ctrl(nctrl); =20 - cancel_work_sync(&ctrl->ioerr_work); cancel_delayed_work_sync(&ctrl->connect_work); /* * kill the association on the link side. this will block * waiting for io to terminate */ nvme_fc_delete_association(ctrl); + cancel_work_sync(&ctrl->ioerr_work); } =20 static void --=20 2.43.7