[{"id":3676040,"web_url":"http://patchwork.ozlabs.org/comment/3676040/","msgid":"<6eec11ccb0a36ab828a99efd45354a92@manguebit.org>","list_archive_url":null,"date":"2026-04-10T20:30:31","subject":"Re: [PATCH 0/2] SMB Direct: double-free of send_io on ib_post_send\n failure in batch flush path","submitter":{"id":91025,"url":"http://patchwork.ozlabs.org/api/people/91025/","name":"Paulo Alcantara","email":"pc@manguebit.org"},"content":"Stefan Metzmacher writes:\n\n> here are the real patches for the changes already tested by\n> Ruikai Peng for the double-free problem reported, see:\n> https://lore.kernel.org/linux-cifs/CAFD3drNOSJ05y3A+jNXSDxW-2w09KHQ0DivhxQ_pcc7immVVOQ@mail.gmail.com/\n>\n> I prepared a branch that can replace ksmbd-for-next.\n> The 2 changes are rebased below the smbdirect.ko changes,\n> I resolved the conflicts and made sure the problem is also solved in\n> the new common code. This in for-7.1/smbdirect-ko-20260410-v12\n> at commit: 274b415378bbd0cf6fde1a719e264cee2eefc06f\n> git fetch https://git.samba.org/metze/linux/wip.git for-7.1/smbdirect-ko-20260410-v12\n> https://git.samba.org/?p=metze/linux/wip.git;a=shortlog;h=refs/heads/for-7.1/smbdirect-ko-20260410-v12\n> I made sure each commit compiles fine...\n>\n>\n> Stefan Metzmacher (2):\n> smb: client: avoid double-free in smbd_free_send_io() after\n> smbd_send_batch_flush()\n> smb: server: avoid double-free in smb_direct_free_sendmsg after\n> smb_direct_flush_send_list()\n>\n> fs/smb/client/smbdirect.c | 8 ++++++++\n> fs/smb/server/transport_rdma.c | 8 +++++++-\n> 2 files changed, 15 insertions(+), 1 deletion(-)\n\nAcked-by: Paulo Alcantara (Red Hat) ","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=manguebit.org header.i=@manguebit.org header.a=rsa-sha256\n header.s=dkim header.b=O9cxclr0;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; 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This in for-7.1/smbdirect-ko-20260410-v12\n> at commit: 274b415378bbd0cf6fde1a719e264cee2eefc06f\n> git fetch https://git.samba.org/metze/linux/wip.git for-7.1/smbdirect-ko-20260410-v12\n> https://git.samba.org/?p=metze/linux/wip.git;a=shortlog;h=refs/heads/for-7.1/smbdirect-ko-20260410-v12\n> I made sure each commit compiles fine...\n>\n>\n> Stefan Metzmacher (2):\n> smb: client: avoid double-free in smbd_free_send_io() after\n> smbd_send_batch_flush()\n> smb: server: avoid double-free in smb_direct_free_sendmsg after\n> smb_direct_flush_send_list()\n>\nAcked-by: Namjae Jeon \nThanks!","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=PiRJPs6J;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; 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This in for-7.1/smbdirect-ko-20260410-v12\n> > at commit: 274b415378bbd0cf6fde1a719e264cee2eefc06f\n> > git fetch https://git.samba.org/metze/linux/wip.git for-7.1/smbdirect-ko-20260410-v12\n> > https://git.samba.org/?p=metze/linux/wip.git;a=shortlog;h=refs/heads/for-7.1/smbdirect-ko-20260410-v12\n> > I made sure each commit compiles fine...\n> >\n> >\n> > Stefan Metzmacher (2):\n> > smb: client: avoid double-free in smbd_free_send_io() after\n> > smbd_send_batch_flush()\n> > smb: server: avoid double-free in smb_direct_free_sendmsg after\n> > smb_direct_flush_send_list()\n> >\n> Acked-by: Namjae Jeon \n> Thanks!","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=QKdHKsyg;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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