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f7ed42f103
[ Upstream commit 801b67f3eaafd3f2ec8b65d93142d4ffedba85df ] When port is part of the modify mask, then we should take it from the qp_attr and not from the old pps. Same for PKEY. Otherwise there are panics in some configurations: RIP: 0010:get_pkey_idx_qp_list+0x50/0x80 [ib_core] Code: c7 18 e8 13 04 30 ef 0f b6 43 06 48 69 c0 b8 00 00 00 48 03 85 a0 04 00 00 48 8b 50 20 48 8d 48 20 48 39 ca 74 1a 0f b7 73 04 <66> 39 72 10 75 08 eb 10 66 39 72 10 74 0a 48 8b 12 48 39 ca 75 f2 RSP: 0018:ffffafb3480932f0 EFLAGS: 00010203 RAX: ffff98059ababa10 RBX: ffff980d926e8cc0 RCX: ffff98059ababa30 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff98059ababa28 RBP: ffff98059b940000 R08: 00000000000310c0 R09: ffff97fe47c07480 R10: 0000000000000036 R11: 0000000000000200 R12: 0000000000000071 R13: ffff98059b940000 R14: ffff980d87f948a0 R15: 0000000000000000 FS: 00007f88deb31740(0000) GS:ffff98059f600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 0000000853e26001 CR4: 00000000001606e0 Call Trace: port_pkey_list_insert+0x3d/0x1b0 [ib_core] ? kmem_cache_alloc_trace+0x215/0x220 ib_security_modify_qp+0x226/0x3a0 [ib_core] _ib_modify_qp+0xcf/0x390 [ib_core] ipoib_init_qp+0x7f/0x200 [ib_ipoib] ? rvt_modify_port+0xd0/0xd0 [rdmavt] ? ib_find_pkey+0x99/0xf0 [ib_core] ipoib_ib_dev_open_default+0x1a/0x200 [ib_ipoib] ipoib_ib_dev_open+0x96/0x130 [ib_ipoib] ipoib_open+0x44/0x130 [ib_ipoib] __dev_open+0xd1/0x160 __dev_change_flags+0x1ab/0x1f0 dev_change_flags+0x23/0x60 do_setlink+0x328/0xe30 ? __nla_validate_parse+0x54/0x900 __rtnl_newlink+0x54e/0x810 ? __alloc_pages_nodemask+0x17d/0x320 ? page_fault+0x30/0x50 ? _cond_resched+0x15/0x30 ? kmem_cache_alloc_trace+0x1c8/0x220 rtnl_newlink+0x43/0x60 rtnetlink_rcv_msg+0x28f/0x350 ? kmem_cache_alloc+0x1fb/0x200 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x24d/0x2d0 ? rtnl_calcit.isra.31+0x120/0x120 netlink_rcv_skb+0xcb/0x100 netlink_unicast+0x1e0/0x340 netlink_sendmsg+0x317/0x480 ? __check_object_size+0x48/0x1d0 sock_sendmsg+0x65/0x80 ____sys_sendmsg+0x223/0x260 ? copy_msghdr_from_user+0xdc/0x140 ___sys_sendmsg+0x7c/0xc0 ? skb_dequeue+0x57/0x70 ? __inode_wait_for_writeback+0x75/0xe0 ? fsnotify_grab_connector+0x45/0x80 ? __dentry_kill+0x12c/0x180 __sys_sendmsg+0x58/0xa0 do_syscall_64+0x5b/0x200 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f88de467f10 Link: https://lore.kernel.org/r/20200227125728.100551-1-leon@kernel.org Cc: <stable@vger.kernel.org> Fixes: 1dd017882e01 ("RDMA/core: Fix protection fault in get_pkey_idx_qp_list") Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.