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ib_srpt: Fix a use-after-free in __srpt_close_all_ch()
[ Upstream commit14d15c2b27
] BUG: KASAN: use-after-free in srpt_set_enabled+0x1a9/0x1e0 [ib_srpt] Read of size 4 at addr ffff8801269d23f8 by task check/29726 CPU: 4 PID: 29726 Comm: check Not tainted 4.18.0-rc2-dbg+ #4 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014 Call Trace: dump_stack+0xa4/0xf5 print_address_description+0x6f/0x270 kasan_report+0x241/0x360 __asan_load4+0x78/0x80 srpt_set_enabled+0x1a9/0x1e0 [ib_srpt] srpt_tpg_enable_store+0xb8/0x120 [ib_srpt] configfs_write_file+0x14e/0x1d0 [configfs] __vfs_write+0xd2/0x3b0 vfs_write+0x101/0x270 ksys_write+0xab/0x120 __x64_sys_write+0x43/0x50 do_syscall_64+0x77/0x230 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f235cfe6154 Fixes:aaf45bd83e
("IB/srpt: Detect session shutdown reliably") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: <stable@vger.kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 2 additions and 2 deletions
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@ -1763,8 +1763,8 @@ static void __srpt_close_all_ch(struct srpt_device *sdev)
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list_for_each_entry(ch, &sdev->rch_list, list) {
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if (srpt_disconnect_ch(ch) >= 0)
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pr_info("Closing channel %s-%d because target %s has been disabled\n",
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ch->sess_name, ch->qp->qp_num,
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pr_info("Closing channel %s because target %s has been disabled\n",
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ch->sess_name,
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sdev->device->name);
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srpt_close_ch(ch);
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}
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