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3f2d67b6bd
Valdis reported a BUG in ipv6_add_addr:
[ 1820.832682] BUG: unable to handle kernel NULL pointer dereference at 0000000000000209
[ 1820.832728] RIP: 0010:ipv6_add_addr+0x280/0xd10
[ 1820.832732] Code: 49 8b 1f 0f 84 6a 0a 00 00 48 85 db 0f 84 4e 0a 00 00 48 8b 03 48 8b 53 08 49 89 45 00 49 8b 47 10
49 89 55 08 48 85 c0 74 15 <48> 8b 50 08 48 8b 00 49 89 95 b8 01 00 00 49 89 85 b0 01 00 00 4c
[ 1820.832847] RSP: 0018:ffffaa07c2fd7880 EFLAGS: 00010202
[ 1820.832853] RAX: 0000000000000201 RBX: ffffaa07c2fd79b0 RCX: 0000000000000000
[ 1820.832858] RDX: a4cfbfba2cbfa64c RSI: 0000000000000000 RDI: ffffffff8a8e9fa0
[ 1820.832862] RBP: ffffaa07c2fd7920 R08: 000000000000017a R09: ffffffff8a555300
[ 1820.832866] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888d18e71c00
[ 1820.832871] R13: ffff888d0a9b1200 R14: 0000000000000000 R15: ffffaa07c2fd7980
[ 1820.832876] FS: 00007faa51bdb800(0000) GS:ffff888d1d400000(0000) knlGS:0000000000000000
[ 1820.832880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1820.832885] CR2: 0000000000000209 CR3: 000000021e8f8001 CR4: 00000000001606e0
[ 1820.832888] Call Trace:
[ 1820.832898] ? __local_bh_enable_ip+0x119/0x260
[ 1820.832904] ? ipv6_create_tempaddr+0x259/0x5a0
[ 1820.832912] ? __local_bh_enable_ip+0x139/0x260
[ 1820.832921] ipv6_create_tempaddr+0x2da/0x5a0
[ 1820.832926] ? ipv6_create_tempaddr+0x2da/0x5a0
[ 1820.832941] manage_tempaddrs+0x1a5/0x240
[ 1820.832951] inet6_addr_del+0x20b/0x3b0
[ 1820.832959] ? nla_parse+0xce/0x1e0
[ 1820.832968] inet6_rtm_deladdr+0xd9/0x210
[ 1820.832981] rtnetlink_rcv_msg+0x1d4/0x5f0
Looking at the code I found 1 element (peer_pfx) of the newly introduced
ifa6_config struct that is not initialized. Use a memset rather than hard
coding an init for each struct element.
Reported-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Fixes:
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| certs | ||
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| Documentation | ||
| drivers | ||
| firmware | ||
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| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| mm | ||
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| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
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| README | ||
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.